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The incidence of hemodynamic and respiratory adverse events in morbidly obese presenting for Bariatric surgery
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Anaesthesiology.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Anaesthesiology.ORCID iD: 0000-0003-2935-7161
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Anaesthesiology.
2018 (English)In: International Journal of Clinical Anesthesia and Research, Vol. 2, no 1, p. 009-017Article in journal (Refereed) Published
Abstract [en]

Context: Perioperative management of morbidly obese patients undergoing bariatric surgery is challenging. Lacking standardized perioperative protocols, complication rates may be high. This retrospective study aims to quantify the incidence of significant blood pressure decreases on induction of anesthesia and intraoperative hypoxemia, before implementation of a standardized protocol designed for bariatric surgery.

Design: Retrospective, observational study.

Setting: A 250-bed county hospital in northern Sweden.

Subjects: 219 morbidly obese patients (body mass index > 35 kg/m2) who underwent bariatric surgery between 2003 and 2008.

Main outcome measures: Incidence of systolic blood pressure (SAP) falls to less than 70% of the preoperative baseline during induction of anesthesia and incidence of perioperative hypoxemia.

Results: The incidence of confirmed SAP falls to below 70% of baseline at induction of anesthesia was 56.2% (n = 123/219). This incidence rose with increasing age (p < 0.001) but not with body mass index (BMI). 3.7% (n = 8/219) of cases were marked as difficult intubations. A transient period of hypoxemia was observed in 6.8% (n = 15/219) and was more common with increasing BMI (p = 0.005). Fourteen different drug combinations were used in the study population. Of those administered an induction anesthetic drug, 72.6% (n = 159/193) were given an overdose when calculated by lean body weight, but this did not correlate significantly to SAP falls (p = 0.468).

Conclusions: The incidence of a significant blood pressure fall upon induction of anesthesia was common. The incidence of airway and ventilation problems were low. Overdosing of anesthetics and excessive variation in applied anesthesia methods were found.

Place, publisher, year, edition, pages
Heighten Science , 2018. Vol. 2, no 1, p. 009-017
Keywords [en]
Morbid obesity, Bariatric surgery, Desaturation, Hypoxemia, Anaesthesia, venous return, Anesthesia methods
National Category
Anesthesiology and Intensive Care
Identifiers
URN: urn:nbn:se:umu:diva-151863DOI: 10.29328/journal.ijcar.1001006OAI: oai:DiVA.org:umu-151863DiVA, id: diva2:1248197
Available from: 2018-09-14 Created: 2018-09-14 Last updated: 2018-09-17Bibliographically approved

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Hultin, MagnusMyrberg, Tomi

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