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Quality of life questionnaire predicts poor exercise capacity only in HFpEF and not in HFrEF
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Medicin. Molecular & Clinical Sciences Research Institute, St George University London. (Heart Centre)
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Kardiologi. Clinic of Cardiology, University Clinical Centre of Kosova. (Heart Centre)
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2017 (Engelska)Ingår i: BMC Cardiovascular Disorders, ISSN 1471-2261, E-ISSN 1471-2261, Vol. 17, artikel-id 268Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background: The Minnesota Living with Heart Failure Questionnaire (MLHFQ) is the most widely used measure of quality of life (QoL) in HF patients. This prospective study aimed to assess the relationship between QoL and exercise capacity in HF patients.

Methods: The study subjects were 118 consecutive patients with chronic HF (62 +/- 10 years, 57 females, in NYHA I-III). Patients answered a MLHFQ questionnaire in the same day of complete clinical, biochemical and echocardiographic assessment. They also underwent a 5 min walk test (6-MWT), in the same day, which grouped them into; Group I: <= 300 m and Group II: > 300 m. In addition, left ventricular (LV) ejection fraction (EF), divided them into: Group A, with preserved EF (HFpEF) and Group B with reduced EF (HFrEF).

Results: The mean MLHFQ total scale score was 48 (+/- 17). The total scale, and the physical and emotional functional MLHFQ scores did not differ between HFpEF and HFpEF. Group I patients were older (p = 0.003), had higher NYHA functional class (p = 0.002), faster baseline heart rate (p = 0.006), higher prevalence of smoking (p = 0.015), higher global, physical and emotional MLHFQ scores (p < 0.001, for all), larger left atrial (LA) diameter (p = 0.001), shorter LV filling time (p = 0.027), higher E/e' ratio (0.02), shorter isovolumic relaxation time (p = 0.028), lower septal a' (p = 0.019) and s' (p = 0.023), compared to Group II. Independent predictors of 6-MWT distance for the group as a whole were increased MLHFQ total score (p = 0.005), older age (p = 0.035), and diabetes (p = 0.045), in HFpEF were total MLHFQ (p = 0.007) and diabetes (p = 0.045) but in HFrEF were only LA enlargement (p = 0.005) and age (p = 0.013. A total MLHFQ score of 48.5 had a sensitivity of 67% and specificity of 63% (AUC on ROC analysis of 72%) for limited exercise performance in HF patients.

Conclusions: Quality of life, assessment by MLHFQ, is the best correlate of exercise capacity measured by 6-MWT, particularly in HFpEF patients. Despite worse ejection fraction in HFrEF, signs of raised LA pressure independently determine exercise capacity in these patients.

Ort, förlag, år, upplaga, sidor
BioMed Central, 2017. Vol. 17, artikel-id 268
Nyckelord [en]
heart failure, The Minnesota Living with Heart Failure Questionnaire, exercise capacity, 6 min walk test, echocardiography, quality of life
Nationell ämneskategori
Kardiologi
Identifikatorer
URN: urn:nbn:se:umu:diva-141480DOI: 10.1186/s12872-017-0705-0ISI: 000413276700003PubMedID: 29041912OAI: oai:DiVA.org:umu-141480DiVA, id: diva2:1158498
Tillgänglig från: 2017-11-20 Skapad: 2017-11-20 Senast uppdaterad: 2019-05-20Bibliografiskt granskad

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Henein, Michael Y.Ibrahimi, PranveraBajraktari, Gani

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