Prolonged heart rate recovery time after 6-minute walk test is an independent risk factor for cardiac events in heart failure: a prospective cohort study
Physiotherapy
; (114): 77-84, Mar. 2022. graf, tab
Article
de En
| CONASS, SES-SP, SESSP-IDPCPROD, SES-SP
| ID: biblio-1343908
Bibliothèque responsable:
BR79.1
ABSTRACT
OBJECTIVES:
To determine whether the time for peak exercise heart rate to return to resting heart rate after the 6-minute walk test (6MWT) can predict cardiac events in patients with heart failure (HF) within 2 years.DESIGN:
Prospective cohort study.SETTING:
HF outpatient facility at a tertiary teaching hospital.PARTICIPANTS:
Seventy-six patients with HF, New York Heart Association functional classification II and III, and left ventricular ejection fraction <50% MAIN OUTCOMEMEASURES:
Patients used a heart rate monitor to measure the time for peak exercise heart rate to return to resting heart rate after the 6MWT. Data were analysed using Polar Pro-Trainer 5 software (Kempele, Finland). Patients were followed for >2 years for cardiac events (hospitalisations and death).RESULTS:
Thirty-four patients had cardiac events during the 2-year follow-up period. There was a significant difference in time to return to resting heart rate between the groups with and without cardiac events {with 3.6 [standard deviation (SD) A] vs without 2.8 (SD B) minutes; mean difference C; 95% confidence interval (CI) of the difference D to E; P=0.003}. No significant differences between patients with and without cardiac events were found for mean walking distance, mean heart rate recovery at 1 minute and mean heart rate recovery at 2 minutes. The receiver operating curve discriminated between patients with and without cardiac events (área under the curve 0.71, 95% CI 0.61 to 0.81; P< 0.001). Using logistic regression analysis, prolonged time to return to resting heart rate (≥3 minutes) independently increased the risk for cardiac events 6.9-fold (95% CI 2.34 to 20.12; P< 0.001). The KaplanMeier curve showed more cardiac events in patients with prolonged time to return to resting heart rate (P=0.028).CONCLUSIONS:
Prolonged time to return to resting heart rate (≥3 minutes) after the 6MWT was an independent predictor of cardiac events in patients with HF.
Texte intégral:
1
Collection:
06-national
/
BR
Base de données:
CONASS
/
SES-SP
/
SESSP-IDPCPROD
Sujet principal:
Capacité résiduelle fonctionnelle
/
Test de marche
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Défaillance cardiaque
Type d'étude:
Etiology_studies
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Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Langue:
En
Journal:
Physiotherapy
Année:
2022
Type de document:
Article