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  • 1.
    Adamo, Karin
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Sandblom, Gabriel
    Brännström, Fredrik
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Prevalence and recurrence rate of perianal abscess -a population-based study, Sweden 1997-20092016In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 31, no 3, p. 669-673Article in journal (Refereed)
    Abstract [en]

    INTRODUCTION: The aim of this study was to assess the impact of diabetes mellitus, Crohn's disease, HIV/aids, and obesity on the prevalence and readmission rate of perianal abscess.

    METHODS: The study cohort was based on the Swedish National Patient Register and included all patients treated for perianal abscess in Sweden 1997-2009. The prevalence and risk for readmission were assessed in association with four comorbidity diagnoses: diabetes mellitus, Crohn's disease, HIV, and/or AIDS and obesity.

    RESULTS: A total of 18,877 patients were admitted during the study period including 11,138 men and 4557 women (2.4:1). Crohn's disease, diabetes, and obesity were associated with a significantly higher prevalence of perianal abscess than an age- and gender-matched background population (p < 0.05). In univariate analysis, neither age nor gender had any significant impact on the risk for readmission. In a multivariate Cox proportional hazard analysis, Crohns disease was the only significant risk factor for readmission of perianal abscess.

    CONCLUSION: Crohn's disease, diabetes, and obesity increase the risk for perianal abscess. Of these, Crohn's and HIV has an impact on readmission. The pathogenesis and the influence of diabetes and obesity need further research if we are to understand why these diseases increase the risk for perianal abscess but not its recurrence.

  • 2.
    Blind, Niillas
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Brännström, Fredrik
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Distance to hospital is not a risk factor for emergency colon cancer surgery.2018In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 33, no 9, p. 1195-1200Article in journal (Refereed)
    Abstract [en]

    PURPOSE: The purpose of this study is to see if the distance to a hospital performing colon cancer surgery is a risk factor for emergency surgical intervention and to determine the variability between defined but demographically divergent catchment areas.

    METHODS: Data on patients living in Västerbotten County who underwent colon cancer surgery between 2007 and 2010 were extracted from the Swedish Colorectal Cancer Register (SCRCR). Of the 436 registrations matching these criteria, 380 patients were used in the analysis, and their distance to the nearest hospital providing care for colorectal cancer (CRC) was estimated using Google Maps™. The correlations between the risk for emergency surgery and the distance to a hospital, gender, age, income level and hospital catchment area were analysed in uni- and multivariate models.

    RESULTS: Distance to the nearest hospital had no significant effect on the proportion of emergency operations for colon cancer. There was significant variability in risk for emergency surgery between hospital catchment areas, where the catchment areas of the university hospital and the most rural hospital had a higher proportion than the other local hospital catchment area (OR, 2.00 (p = 0.038) and OR, 2.97 (p = 0.005)). These results were still significant when analysed with multivariate logistic regression (OR, 2.13 (p = 0.026) and OR, 3.05 (p = 0.013)).

    CONCLUSION: Distance to a hospital performing colon cancer surgery had no effect on the proportion of emergency surgeries. However, a variability between defined catchment areas was seen. Future studies will focus on possible factors behind this variability.

  • 3.
    Clay, L
    et al.
    Division of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital, Huddinge, Stockholm, Sweden .
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. Division of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital, Huddinge, Stockholm, Sweden.
    Franklin, Karl A
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. Division of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital, Huddinge, Stockholm, Sweden.
    Effect of an elastic girdle on lung function, intra-abdominal pressure, and pain after midline laparotomy: a randomized controlled trial2014In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 29, no 6, p. 715-721Article in journal (Refereed)
    Abstract [en]

    PURPOSE: Girdles and abdominal binders may reduce pain and stabilize the abdominal wall after laparotomy, but a risk for increased intra-abdominal pressure and decreased lung function is also hypothesized. The aim of this study was to investigate the effect of an abdominal girdle after midline laparotomy in a randomized controlled trial. METHODS: Twenty-three patients undergoing laparotomy were randomized to wear an elastic girdle postoperatively and 25 were randomized to no girdle. Pulmonary function was evaluated with; forced vital capacity (FVC), forced expiratory volume during one second (FEV1), peak expiratory flow (PEF), and cough PEF. Pain was recorded using a visual analog scale (VAS). All patients completed the ventral hernia pain questionnaire (VHPQ) before surgery and at the end of the study. Intra-abdominal pressure was measured via an indwelling urinary catheter. Wound healing was assessed from photographs. RESULTS: FVC, FEV1, PEF, and cough PEF were reduced by about 30 % after surgery, but there were no differences between patients with or without a girdle (ANOVA). Intra-abdominal pressure and wound healing were the same in both groups. Pain was significantly lower on day 5 in the girdle group (p = 0.004). CONCLUSIONS: An individually fitted elastic girdle used after midline laparotomy was found to be safe, as this did not affect lung function, coughing, intra-abdominal pressure, or wound healing. The immediate decline in lung function after surgery is restrictive and due to anesthesia and the surgical procedure. Pain was significantly decreased in the girdle group. The study is registered at ClinicalTrials.gov, number NCT01517217.

  • 4.
    Folkesson, Joakim
    et al.
    Department of Surgery, Uppsala University Hospital, 751 85, Uppsala, Sweden .
    Brown, Steven S R
    Sheffield Teaching Hospitals, Sheffield, UK .
    Gunnarsson, Ulf
    Centre of Surgical Gastroenterology, Karolinska University Hospital, Huddinge and Karolinska Institute, Stockholm, Sweden.
    Påhlman, Lars
    Department of Surgery, Uppsala University Hospital, 751 85, Uppsala, Sweden .
    Randomised multicentre trial of circular stapling devices2012In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 27, no 2, p. 227-232Article in journal (Refereed)
    Abstract [en]

    PURPOSE: In a register study, the risk of anastomotic leakage correlated to the choice of circular stapling device with a 4% difference between the two brands used. Based on those data, a randomised multicentre study was started to explore the risk of an anastomotic leakage based upon the surgical device.

    METHODS: Patients above 18 years with a rectal cancer, able to give informed consent, and scheduled for an anterior resection were eligible for the study. Perioperative randomisation was to Ethicon™ PROXIMATE™ ILS™ or Autosuture™ Premium Plus CEEA™. Anastomotic leakage was defined as a clinically manifest leak.

    RESULTS: Five hundred twenty-nine patients were randomised (58% male). A leak occurred in 8.3%. The anastomoses created by PROXIMATE™ ILS™ leaked in 25/265 (9.4%) anastomoses, and the Premium Plus CEEA™ leaked in 19/260 (7.3%), p = .419.

    CONCLUSION: No difference in the leak rate could be revealed. Several centres replaced one of the staplers by a new product, and the study was ended before the stipulated number of patients was reached. In the future, surgical devices may have to prove superiority in randomised trials or be monitored in quality registers before they can be introduced into day to day surgical practice. The study was registered at ClinicalTrials.gov: NCT00399009.

  • 5.
    Gurmu, Ambatchew
    et al.
    Department of Surgical Gastroenterology, CLINTEC, Karolinska Institutet, Stockholm, Sweden; Department of Surgery, Nyköping Hospital, Nyköping, Sweden and Department of Surgical Gastroenterology, K53, Karolinska University Hospital, Huddinge, 141 86, Stockholm, Sweden .
    Matthiessen, Peter
    Department of Surgery, Örebro University Hospital, Örebro, Sweden.
    Nilsson, Sven
    Department of Radiology, Akademiska University Hospital, Uppsala, Sweden.
    Påhlman, Lars
    Department of Surgery, Akademiska University Hospital, Uppsala, Sweden.
    Rutegård, Jörgen
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Gunnarsson, Ulf
    Department of Surgical Gastroenterology, CLINTEC, Karolinska Institutet, Stockholm, Sweden.
    The inter-observer reliability is very low at clinical examination of parastomal hernia2011In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 26, no 1, p. 89-95Article in journal (Refereed)
    Abstract [en]

    INTRODUCTION: Parastomal hernia in patients with a permanent colostomy is common. The aim of this study was to evaluate the reliability of the diagnosis based on clinical examination and to compare this examination with the result of a specially designed questionnaire and computerised tomography (CT) scan.

    METHODS: Forty-one patients operated upon with an abdominoperineal resection due to rectal cancer at three hospitals between 1996 and 2002 were included. At minimum of 4 years after the operation, they underwent clinical examination by two or three independent surgeons, answered a colostomy questionnaire and were offered a CT scan of the abdominal wall.

    RESULT: At Hospital I, 17 patients were examined by three surgeons, with inter-observer kappa values between 0.35 and 0.64. At Hospital II, 13 patients were examined by three surgeons, the kappa values ranged between 0.29 and 0.43. At Hospital III, 11 patients were examined by two surgeons, with kappa value of 0.73. The kappa value between CT scan and the colostomy questionnaire was 0.45.

    CONCLUSION: The inter-observer reliability was low, indicating that parastomal hernia is difficult to diagnose by patient history and clinical examination. Some herniae may not be detected by CT scan, and the correlation to patient-reported complaints is low. A more sensitive radiological method to detect parastomal hernia is needed.

  • 6.
    Gustafsson, Carl Pontus
    et al.
    Department of Surgery, Visby Hospital, Gotland, Sweden..
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Dahlstrand, Ursula
    Department of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, and Centre for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden..
    Lindforss, Ulrik
    Department of Molecular Medicine and Surgery, Karolinska Institutet, and Centre for Digestive Diseases, Karolinska University Hospital, Solna, Sweden..
    Loop-ileostomy reversal: patient-related characteristics influencing time to closure2018In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 33, no 5, p. 593-600Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To identify factors associated with timing of stoma reversal after rectal cancer surgery in a large Swedish register-based cohort.

    METHODS: Three thousand five hundred sixty-four patients with rectal cancer who received a protective stoma during surgery in 2007-2013 were identified in the Swedish colorectal cancer register. Time to stoma reversal was evaluated over a follow-up period of one and a half years. Factors associated with timing of stoma reversal were analysed using Cox regression analysis. Reversal within 9 months (12 months if adjuvant chemotherapy) was considered latest expected time to closure.

    RESULTS: Stoma reversal was performed in 2954 (82.9%) patients during follow-up. Patients with post-secondary education had an increased chance for early stoma reversal (HR 1.13; 95% CI 1.02-1.25). Postoperative complications (0.67; 0.62-0.73), adjuvant chemotherapy (0.63; 0.57-0.69), more advanced cancer stage (stage III 0.74; 0.66-0.83 and stage IV 0.38; 0.32-0.46) and higher ASA score (0.80; 0.71-0.90 for ASA 3-4) were associated with longer time to reversal. Two thousand four hundred thirty-seven (68.4%) patients had stoma reversal within latest expected time to closure. Factors associated to decreased chance of timely reversal were more advanced cancer stage (stage III 0.64; 0.50-0.81 and stage IV 0.19; 0.13-0.27), postoperative complications (0.50; 0.42-0.59) and higher ASA score (0.77; 0.61-0.96 for ASA 3-4).

    CONCLUSIONS: Patients with a high level of education had a higher chance of timely reversal but medical factors had a stronger association to time to reversal. Patients with advanced rectal cancer are at high risk for non-reversal and should be considered for permanent stoma.

  • 7. Gustavsson, Kajsa
    et al.
    Gunnarsson, Ulf
    Department of Surgical Gastroenterology, Karolinska University Hospital, Huddinge, Karolinska Institutet, 141 85, Stockholm, Sweden .
    Jestin, Pia
    Postoperative complications after closure of a diverting ileostoma-differences according to closure technique2012In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 27, no 1, p. 55-58Article in journal (Refereed)
    Abstract [en]

    PURPOSE: The aim of this study was to compare three methods for closure of a diverting ileostoma according to development of postoperative small-bowel obstruction (SBO) and anastomotic leakage (AL).

    METHODS: Complications arising within 30 days after closure of a defunctioning loop ileostomy in 351 patients during the period 1999-2006 were studied retrospectively by evaluation of case records. The techniques employed were: hand-sewn anastomosis without bowel resection, hand-sewn anastomosis with bowel resection and stapled anastomosis.

    RESULTS: Of the 351 patients, 149 had a hand-sewn anastomosis without bowel resection (HS), 70 had a hand-sewn anastomosis with bowel resection (HSR) and 132 patients had a stapled anastomosis (S). The total number of SBOs was 44 patients (12.5%). In the two hand-sewn groups, 15.5% (34 patients) suffered postoperative SBO compared to 7.6% (10 patients) in the stapled group (p = 0.029). No difference in AL could be found between the groups, where the overall frequency was 2.8% (10 patients). Median hospital stay was 6 days in the HS group, 5 days in the HSR group and 4 days in the S group (p = 0.001).

    CONCLUSION: In the present study, stapled anastomosis was associated with a lower frequency of postoperative SBO and a shorter hospital stay compared to sutured anastomosis (either with or without a short small-bowel resection) after closure of a diverting ileostoma.

  • 8.
    Jung, Bärbel
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Matthiessen, Peter
    Smedh, Kenneth
    Nilsson, Erik
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Ransjö, Ulrika
    Påhlman, Lars
    Mechanical bowel preparation does not affect the intramucosal bacterial colony count2010In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 25, no 4, p. 439-442Article in journal (Refereed)
    Abstract [en]

    Purpose The aim of this study was to determine if mechanical bowel preparation (MBP) influences the intramucosal bacterial colony count in the colon.

    Materials and methods Macroscopically normal colon mucosa was collected from 37 patients (20 with and 17 without MBP) who were undergoing elective colorectal surgery at three hospitals. The biopsies were processed and cultured in the same laboratory. Colony counts of the common pathogens Escherichia coli and Bacteroides as well as of total bacteria were conducted. The study groups were comparable with regard to age, gender, antibiotics use, diagnosis and type of resection.

    Results MBP did not influence the median colony count of E. coli, Bacteroides or total bacteria in our study.

    Conclusions MBP did not affect the intramucosal bacterial count in this study. Further studies are suggested to confirm these findings.

  • 9. Jörgren, Fredrik
    et al.
    Johansson, Robert
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Damber, Lena
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Lindmark, Gudrun
    Oncological outcome after incidental perforation in radical rectal cancer surgery2010In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 25, no 6, p. 731-740Article in journal (Refereed)
    Abstract [en]

    Identification of risk factors of poor oncological outcome in rectal cancer surgery is of utmost importance. This study examines the impact of incidental perforation on the oncological outcome. Using the Swedish Rectal Cancer Registry, patients were selected who received major abdominal surgery for rectal cancer between 1995 and 1997 with registered incidental perforation. A control group was also selected for analysis of the oncological outcome after 5-year follow-up. Multivariate analysis was performed. Registry data were validated, and additional data were supplemented from medical records. After validation and exclusion of non-radically operated patients, 118 patients with incidental perforation and 155 controls in TNM stages I-III were included in the analysis. The rate of local recurrence (LR) [20% (23/118) vs. 8% (12/155) (p = 0.007)] was significantly higher among patients with perforation, whereas the rates of distant metastasis [27% (32/118) vs. 21% (33/155) (p = 0.33)] and overall recurrence (OAR) [35% (41/118) vs. 25% (38/155) (p = 0.087)] were not significantly different between the groups. Overall as well as cancer-specific 5-year survival rates were significantly reduced for the patients with perforation [44 vs. 64% (p = 0.002) and 66 vs. 80% (p = 0.026), respectively]. In the multivariate analysis, perforation was a significant risk factor of increased rates of LR and OAR as well as reduced 5-year overall and cancer-specific survival. Incidental perforation in rectal cancer surgery is an important risk factor of poor oncological outcome and should be considered in the discussion concerning postoperative adjuvant treatment as well as the follow-up regime.

  • 10. Mörner, Malin E M
    et al.
    Edgren, Gustaf
    Martling, Anna
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Egenvall, Monika
    Preoperative anaemia and perioperative red blood cell transfusion as prognostic factors for recurrence and mortality in colorectal cancer-a Swedish cohort study2017In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 32, no 2, p. 223-232Article in journal (Refereed)
    Abstract [en]

    PURPOSE: The hypothesis in this study was that anaemia prior to surgery and perioperative red blood cell transfusion increases the risk for recurrence and overall mortality in patients with stages I-III colorectal cancer after abdominal resection with curative intent.

    METHODS: This is a Swedish single centre retrospective cohort study. Data on 496 consecutive radical abdominal resections stages I-III colorectal cancer performed at the Karolinska University Hospital 2007-2010 were extracted from the Swedish Colorectal Cancer Registry. Data were linked to local laboratory and transfusion databases to identify preoperative anaemia and perioperative transfusion. Disease recurrence was validated by scrutiny of patient records. A total of 496 stages I-III colorectal cancer patients were included in the analysis. Multivariate Cox regression analysis adjusted for tumour and patient characteristics were performed to assess risk for recurrence and overall mortality.

    RESULTS: Anaemia prior to surgery was associated with increased risk for overall mortality (HR 2.1, 95% CI 1.4-3.2). There was no association between anaemia and risk for recurrence (HR 1.6, 95% CI 0.97-2.6). Transfusion was not associated with increased risk of recurrence (HR 0.7, 95% CI 0.4-1.3) or overall mortality (HR 1.04, 95% CI 0.7-1.6).

    CONCLUSIONS: Anaemia prior to colorectal cancer surgery was associated with increased risk for overall mortality while a no increased risk was seen for recurrence. Previous findings indicating an association between blood transfusion and increased risk for recurrence could not be confirmed.

  • 11.
    Näsvall, Pia
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. Department of Surgery, Sunderby Hospital/Umeå University, 97180, Luleå, Sweden .
    Wikner, F
    Umeå University, Faculty of Medicine, Department of Radiation Sciences.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Rutegård, Jörgen
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    A comparison between intrastomal 3D ultrasonography, CT scanning and findings at surgery in patients with stomal complaints2014In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 29, no 10, p. 1263-1266Article in journal (Refereed)
    Abstract [en]

    PURPOSE: Since there are no reliable investigative tools for imaging parastomal hernia, new techniques are needed. The aim of this study was to assess the validity of intrastomal three-dimensional ultrasonography (3D) as an alternative to CT scanning for the assessment of stomal complaints.

    METHOD: Twenty patients with stomal complaints, indicating surgery, were examined preoperatively with a CT scan in the supine position and 3D intrastomal ultrasonography in the supine and erect positions. Comparison with findings at surgery, considered to be the true state, was made.

    RESULTS: Both imaging methods, 3D ultrasonography and CT scanning, showed high sensitivity (ultrasound 15/18, CT scan 15/18) and specificity (ultrasound 2/2, CT scan 1/2) when judged by a dedicated radiologist. Corresponding values for interpretation of CT scans in routine clinical practice was for sensitivity 17/18 and for specificity 1/2.

    CONCLUSION: 3D ultrasonography has a high validity and is a promising alternative to CT scanning in the supine position to distinguish a bulge from a parastomal hernia.

  • 12.
    Näverlo, Simon
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Näsvall, Pia
    Sunderby Research Unit, Umeå University, Luleå, Sweden.
    Quality of life after end colostomy without mesh and with prophylactic synthetic mesh in sublay position: one-year results of the STOMAMESH trial2019In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 34, no 9, p. 1591-1599Article in journal (Refereed)
    Abstract [en]

    Purpose: To determine whether prophylactic mesh in a sublay position has an impact on the quality-of-life (QoL) of patients receiving an end colostomy.

    Methods: One-year follow-up of patients from the STOMAMESH trial, a randomized controlled double-blinded multicenter study. Patients were randomized to either prophylactic synthetic mesh with a cruciform incision in the center, placed in sublay position, or no prophylactic mesh. Patients attended a 1-year visit and responded to the questionnaires EORTC QLQ C-30 and CR-38. The impact of having a mesh on QoL was determined by comparing a group of patients receiving a mesh with a group without. A subgroup analysis was made depending on whether a PSH was clinically present or not.

    Results: Of the 232 randomized patients, 211 patients reached the 1-year clinical follow-up. The response rate of these 211 patients was 70%. No differences were seen in global QoL between the groups. Mesh patients reported significantly less stoma-related problems (p = 0.014) but more sexual problems in males (p = 0.022). When excluding patients with a clinical diagnosis of PSH, the difference in stoma-related problems remained while no significant difference was seen regarding sexual problems in males.

    Conclusions: When forming an end colostomy, prophylactic synthetic mesh in a sublay position did not affect global QoL at 1-year follow-up, but stoma-related problems were fewer even in the presence of a clinically diagnosed PSH.

  • 13.
    Näverlo, Simon
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Strigård, Karin
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Long distance to hospital is not a risk factor for non-reversal of a defunctioning stoma2019In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 34, no 6, p. 993-1000Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To see if road distance to hospital influences stoma reversal rate, time from index operation to stoma reversal, and occurrence of permanent stoma.

    METHODS: Data from all diagnosed cases of rectal cancer from three counties in northern Sweden were extracted from the Swedish Rectal Cancer Registry. The three counties are sparsely populated, with a population density roughly one fifth the average density in Sweden. Distances to nearest, operating, and largest hospital were obtained using Google Maps™. Matched data on socioeconomic variables were retrieved from Statistics Sweden.

    RESULTS: In univariate logistic regression analysis, patients living closer to the operating hospital had a higher likelihood of non-reversal than those living farther away (OR 0.3; 95% CI 0.12-0.76). However, no difference was seen in the multivariate analysis. Of the 717 cases included, 54% received a permanent stoma and 38% a defunctioning stoma at index surgery. The reversal rate of a defunctioning stoma was 83%. At follow-up, 61% still had a stoma, 89% of these were permanent, and 11% non-reversed defunctioning stomas. Median time to stoma reversal was 287 days (82-1557 days). Of all 227 stoma reversals, 77% were done more than 6 months after index surgery.

    CONCLUSIONS: Longer distance to hospital is not a risk factor for non-reversal of a defunctioning stoma. Only 23% had their defunctioning stoma reversed within 6 months after index surgery. Future studies aiming to determine reversal rate need to extend their follow-up time in order to receive accurate results.

  • 14. Piekarek, Kristoffer
    et al.
    Israelsson, Leif A
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Perforated colonic diverticular disease: the importance of NSAIDs, opioids, corticosteroids, and calcium channel blockers2008In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 23, no 12, p. 1193-1197Article in journal (Refereed)
    Abstract [en]

    PURPOSE: Perforated colonic diverticular disease is associated with a high rate of late sequel and mortality. The risk of colonic perforation may relate to intracolonic pressure and mucosal barrier function in the wall of diverticula. The use of substances affecting these parameters may therefore be associated with the risk of developing a perforation. The aim was to study the effect of nonsteroidal anti-inflammatory drugs (NSAIDs), opioids, corticosteroids, calcium channel blockers, and antimuscarinics on perforation in diverticular disease.

    MATERIALS AND METHODS: A review of 54 patients with colonic diverticular perforation-forming the case group-and 183 patients with verified colonic diverticular disease-forming the control group-was done. Patient characteristics and drug use was registered.

    RESULTS: Case group and control group were comparable with respect to sex, age, and comorbidity. In multivariate analysis, the use of NSAIDs (OR 3.56; 95% CI 1.50-8.43), opioids (OR 4.51; 95% CI 1.67-12.18), and corticosteroids (OR 28.28; 95% CI 4.83-165.7) were significantly associated with perforated diverticular disease. Acetylsalicylic acid in cardiologic dose did not affect the rate of perforation (OR 0.66; 95% CI 0.27-1.61). The use of calcium channel blockers was associated with a reduced rate of diverticular complications (OR 0.14; 95% CI 0.02-0.95).

    CONCLUSIONS: The administration of NSAIDs, opioids, and corticosteroids are associated with an increased risk of colonic diverticular perforation. Acetylsalicylic acid in cardiologic dose does not affect the risk of perforation. Calcium channel blockers are associated with a reduced risk of perforation.

  • 15.
    Rutegård, Martin
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Boström, Petrus
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Haapamäki, Markku
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Matthiessen, Peter
    Rutegård, Jörgen
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Current use of diverting stoma in anterior resection for cancer: population-based cohort study of total and partial mesorectal excision2016In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 31, no 3, p. 579-585Article in journal (Refereed)
    Abstract [en]

    Purpose A diverting stoma is commonly used to reduce the risk of anastomotic leakage when performing total mesorectal excision (TME) in anterior resection for rectal cancer. The purpose of this study was to evaluate the impact of fecal diversion in relation to partial mesorectal excision (PME).

    Methods A retrospective analysis was undertaken on a national cohort, originally created to study the impact of central arterial ligation on patients with increased cardiovascular risk. Some 741 patients operated with anterior resection for rectal cancer during the years 2007 through 2010 were followed up for 53 months. Multivariate logistic regression was used to evaluate the impact of diverting stoma on the risk of anastomotic leakage and permanent stoma, expressed as odds ratios (ORs) and 95 % confidence intervals (CIs).

    Results The risk of anastomotic leakage was increased in TME surgery when not using a diverting stoma (OR 5.1; 95 % CI 2.2-11.6), while the corresponding risk increase in PME patients was modest (OR 1.8; 95 % CI 0.8-4.0). At study completion or death, 26 and 13 % of TME and PME patients, respectively, had a permanent stoma. A diverting stoma was a statistically significant risk factor for a permanent stoma in PME patients (OR 4.7; 95 % CI 2.5-9.0), while less important in TME patients (OR 1.8; 95 % CI 0.6-5.5).

    Conclusion The benefit of a diverting stoma concerning anastomotic leakage in this patient group seems doubtful. Moreover, the diverting stoma itself may contribute to the high rate of permanent stomas.

  • 16.
    Strigård, Karin
    Division of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital, Stockholm.
    Tumor recurrence associated with use of a percutaneous bladder catheter after surgery for large bowel carcinoma.1996In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 11, no 3, p. 122-Article in journal (Refereed)
  • 17.
    Strigård, Karin
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Folkesson, J
    Dept of Surgical Science, Division of Surgery, Uppsala University, Uppsala, Sweden .
    Påhlman, Lars
    Dept of Surgical Science, Division of Surgery, Uppsala University, Uppsala, Sweden .
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. CLINTEC, Division of Surgery, Karolinska Institutet, Stockholm, Sweden .
    The Easy-X magnetic stoma connector system. A future concept for stomal dressing?2013In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 28, no 3, p. 371-374Article in journal (Refereed)
    Abstract [en]

    A considerable proportion of stoma patients are disabled for various reasons and are elderly. To be able to dress their stoma themselves is of crucial importance for their integrity and social life. This study evaluates a novel stomal dressing system based on a magnetic connector-the Easy-X system. Twenty patients (8 women, mean age of 40-89 years) with a well-functioning colostomy tested the Easy-X system for 6 weeks. The system was judged by the patients using a multiple choice scale, and by the stoma nurses using a 10-grade VAS. Eighteen of 20 patients completed the trial. Ten patients rated the Easy-X as better than their ordinary system, 3 as equal to and 4 deemed it inferior. Despite this, only three were prepared to change to the Easy-X system. Eleven of 18 patients experienced discomfort with the new adhesive plate. Three patients suffered leakage less often and five patients more often than with their ordinary system. Stoma nurse ratings were available for 14 patients. Their evaluation of the magnetic connector in the Easy-X system was positive in eight cases, neutral in one case and negative in three cases. Global impression ratings were 3 positive, 3 negative and 5 neutral. The Easy-X system showed potential advantages over conventional stomal dressing systems, but the system must be improved in terms of a varied assortment of dressing products enabling individual fitting before a larger trial can be carried out on disabled patients. Furthermore, the increased use of metal has to be handled with an ecologic recycling system. A new stomal dressing system with a magnetic connector has potential advantages over conventional stomal dressings for disabled persons.

  • 18.
    Strigård, Karin
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Gurmu, A.
    Department of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital/Huddinge, Stockholm, Sweden.
    Näsvall, Pia
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. Department of Surgery, Sunderby Hospital/Umeå University, Luleå, Sweden.
    Pahlman, P.
    Department of Surgical Sciences, Uppsala University, 751 85 Uppsala, Sweden.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery. Department of Surgery, Department of Clinical Science, Intervention and Technology, CLINTEC, Karolinska Institutet, Karolinska University Hospital/Huddinge, Stockholm, Sweden.
    Intrastomal 3D ultrasound: an inter- and intra-observer evaluation2013In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 28, no 1, p. 43-47Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to determine intra- and interobserver reliability in 3D intrastomal ultrasound imaging of parastomal hernia and protrusion. A total of 40 patients were investigated. Two or three physicians evaluated the images twice, 1 month apart. Inter-observer agreement was 72 % with a kappa value 0.59. For the last 10 patients there was an agreement of 80 % with a kappa value of 0.70. Intraobserver agreement was 80 % for one observer and 95 % for the other. The learning curve levelled out at around 30 patients. Considering the learning curve of 30 patients, 3D intrastomal ultrasound is a reliable investigation method. 3D intrastomal ultrasonography has the potential to be the investigation of choice to differentiate between a bulge, a hernia, or a protrusion.

  • 19. Söderbäck, Harald
    et al.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Hellman, Per
    Sandblom, Gabriel
    Incisional hernia after surgery for colorectal cancer: a population-based register study.2018In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 33, no 10, p. 1411-1417Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Our knowledge on the incidence of incisional hernia and risk factors for developing incisional hernia following surgery for colorectal cancer is far from complete.

    METHODS: All procedures registered in the Swedish Colorectal Cancer Register (SCRCR) 2007-2013 were identified. Patients with comorbid disease diagnoses, registered at admissions and visits prior to the procedure and relevant to this study, were obtained from the National Patient Register (NPR). These diagnoses included cardiovascular disease, connective tissue disorders, liver cirrhosis, renal failure, diabetes, chronic obstructive lung disease and chronic inflammatory conditions. Data on occurrence of incisional hernias were obtained by combining data from the SCRCR and the NPR (International Classification of Diseases code).

    RESULTS: During 2007-2013, 39,984 procedures were registered in the SCRCR. After excluding laparoscopic procedures, procedures repeated on the same patient, procedures with concomitant liver resection and procedures without laparotomy, 28,913 cases remained for analysis. Five years after surgery, the cumulative incidence of incisional hernia was 5.3%. In multivariate proportional hazard analysis, significantly increased risk for incisional hernia was found for the male gender (hazard ratio [HR] 1.40, 95% confidence interval [CI] 1.21-1.62), operation time exceeding 180 min (HR 1.25, CI 1.08-1.45), body mass index (BMI) > 30 (HR 1.78, CI 1.51-2.09), age < 70 years (HR 1.34, CI 1.16-1.56) and postoperative wound complication (HR 2.09, CI 1.70-2.58).

    DISCUSSION: Men, patients younger than 70 years and patients with BMI > 30 face a higher risk for incisional hernia. The risk is also increased in cases where the procedure takes longer than 3 h or where postoperative wound complications occur. These patients will benefit from measures aimed at preventing the development of incisional hernia.

  • 20. Söderbäck, Harald
    et al.
    Gunnarsson, Ulf
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences.
    Martling, Anna
    Hellman, Per
    Sandblom, Gabriel
    Incidence of wound dehiscence after colorectal cancer surgery: results from a national population-based register for colorectal cancer2019In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 34, no 10, p. 1757-1762Article in journal (Refereed)
    Abstract [en]

    Background: Patient-related risk factors for wound dehiscence after colorectal surgery remain obscure.

    Methods: All open abdominal procedures for colorectal cancer registered in the Swedish Colorectal Cancer Registry (SCRCR, 5) 2007-2013 were identified. Potential risk factors for wound dehiscence were identified by cross-matching between the SCRCR and the National Patient Register (NPR). The endpoint in this study was reoperation for wound dehiscence registered in either the SCRCR or NPR and patients not reoperated were considered controls.

    Results: A total of 30,050 patients were included in the study. In a multivariable regression analysis, age > 70 years, male gender, BMI > 30, history of chronic obstructive pulmonary disease, history of generalised inflammatory disease, and duration of surgery less than 180 min were independently and significantly associated with increased risk for wound dehiscence. A history of diabetes, chronic renal disease, liver cirrhosis, and distant metastases was not associated with wound dehiscence. The hazard ratio for postoperative death was 1.24 for patients who underwent reoperation for wound dehiscence compared with that for controls.

    Discussion: Patients reoperated for wound dehiscence face a significantly higher postoperative mortality than those without. Risk factors include male gender, age > 70 years, obesity, history of chronic obstructive pulmonary disease, and history of generalised inflammatory disease. Patients at high risk for developing wound dehiscence may, if identified preoperatively, benefit from active prevention measures implemented in routine surgical practice.

  • 21. Tivenius, Mathilda
    et al.
    Näsvall, Pia
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences. Sunderby Reasearch Unit, Umeå University, Luleå, Sweden.
    Sandblom, Gabriel
    Parastomal hernias causing symptoms or requiring surgical repair after colorectal cancer surgery - a national population-based cohort study2019In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 34, no 7, p. 1267-1272Article in journal (Refereed)
    Abstract [en]

    PurposeParastomal hernia is a complication with high morbidity that affects the patient's quality of life. The aim of this study was to assess the cumulative incidence of parastomal hernia in patients who have undergone colorectal cancer surgery and to identify potential risk factors that could predispose to the development of this type of hernia in a large population-based cohort over a long follow-up period.MethodsThe Swedish Colorectal Cancer Registry and the National Patient Register were used to collect study cohort data between January 2007 and September 2013. All patients undergoing colorectal cancer surgery including a permanent stoma were included in the study group.ResultsA total of 39,984 patients were registered during the study period. Of these, 7649 received a permanent stoma. Multivariate proportional hazard analysis, based on 6329 patients for whom all covariates could be retrieved, showed that the only independent risk factor for developing a parastomal hernia was BMI30 (HR 1.49; 95% CI 1.02-2.17; p<0.037). A slightly elevated hazard ratio was found for preoperative radiotherapy (HR 1.36; 95% CI 0.96-1.91; p<0.070). The cumulative incidence of patients diagnosed or surgically treated for parastomal hernia over a follow-up period of 5years was 7.7% (95% CI 6.1-9.2%).ConclusionsThe cumulative incidence of parastomal hernia causing symptoms or requiring surgery after 5years was at least 7.7%. Obesity increases the risk of developing parastomal hernia.

  • 22.
    Wallin, Ulrik
    et al.
    Department of Surgery, Akademiska Sjukhuset, 75185, Uppsala, Sweden.
    Gunnarsson, Ulf
    Department of Surgery, Karolinska Institutet, Huddinge, Sweden.
    Glimelius, Bengt
    Department of Oncology, Radiology and Clinical Immunology, Uppsala University, 75185, Uppsala, Sweden and Department of Oncology and Pathology, Radiumhemmet, Karolinska Institutet, Stockholm, Sweden.
    Loktionov, Alexandre
    Colonix Medical Limited, Cambridge, UK, CB22 3AT.
    Påhlman, Lars
    Department of Surgery, Akademiska Sjukhuset, 75185, Uppsala, Sweden.
    Can DNA sampling from the rectal mucosa be a novel tool for the detection of colorectal cancer?2010In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 25, no 9, p. 1071-1078Article in journal (Refereed)
    Abstract [en]

    INTRODUCTION: The objective was to evaluate a new method for DNA sampling from the rectal mucosa for the detection of colorectal cancer or any clinically significant pathology in the colon and rectum.

    METHODS: This prospective cohort study included patients scheduled for colonoscopy (group 1, n = 185) or colonic resection because of suspected colorectal cancer (group 2, n = 62). A test instrument with a balloon-holding end was introduced through a proctoscope into the rectum to collect exfoliated cells, from which DNA was isolated and quantified.

    RESULTS: The detection of colorectal cancer in group 1 showed a sensitivity for the DNA cut-off levels 1.5, 2, and 2.5 microg/ml of 100%, 80%, and 60%, and a specificity of 37%, 46%, and 56%, respectively. In group 2, for the same cut-off levels, the sensitivity was 73%, 61%, and 55%, and the specificity was 67%, 67%, and 67%, respectively.

    CONCLUSIONS: This novel technique is a safe and easy way of collecting DNA from the rectal mucosa. The sensitivity and specificity of the test were too low to be acceptable for a screening test. The low sensitivity and specificity in this study could be explained by the diversity within the study groups as many patients presented with long-term history of colorectal disease and surgical interventions in the past.

  • 23.
    Öberg, Åke
    et al.
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Samii, S
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Stenling, Roger
    Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology.
    Lindmark, Gudrun
    Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Surgery.
    Different occurrence of CD8+, CD45R0+, and CD68+ immune cells in regional lymph node metastases from colorectal cancer as potential prognostic predictors2002In: International Journal of Colorectal Disease, ISSN 0179-1958, E-ISSN 1432-1262, Vol. 17, no 1, p. 25-29Article in journal (Refereed)
    Abstract [en]

    BACKGROUND AND AIMS: To study whether there are differences in the immunohistochemical staining of CD8, CD45R0, and CD68 of immune cells in regional lymph node metastases from colorectal cancer that are of potential interest in prognostic prediction.

    MATERIALS AND METHODS: Analysis of archival specimens from 93 patients operated on for colorectal cancer (based on monoclonal antibodies, the ABC technique, and semiquantitative classification).

    RESULTS: There was a significant difference in survival time between patients with respect to the number of positive immune cells. The cancer-specific 5-year survival rate was 77% for patients with high numbers of CD8+ cells, compared to 33% for those with lower numbers. The corresponding figures for patients with CD45R0+ cells were 66% vs. 33%, and for patients with CD68+ cells 60% vs. 38%. Significant differences remained among the 74 patients without adjuvant radio/chemotherapy regarding CD8 and CD45R0 but not CD68.

    CONCLUSION: The presence of CD8+, CD45R0+, and CD68+ immune cells in regional lymph node metastases may serve as predictors of patients survival in colorectal cancer Dukes' stage C.

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