International Journal of Cardiovascular Sciences. 14/abr/2022;35(5):690-5.

Effects of Cardiac Resynchronization Therapy on a Six-minute Walk Test, Maximal Inspiratory Pressure and Peak Expiratory Flow in Patients with Heart Failure: A Longitudinal Study

Christiane Rodrigues Alves ORCID logo , Sergio S. M. C. Chermont ORCID logo , Christiane Wiefels Reis, Erivelton A. Nascimento, Mario Luiz Ribeiro, Fernanda Ribeiro, Evandro Tinoco Mesquita ORCID logo , Claudio Tinoco Mesquita ORCID logo

DOI: 10.36660/ijcs.20190158

Abstract

Background:

Cardiac resynchronization therapy (CRT) is an effective treatment for patients with heart failure.

Objective:

To evaluate the response of CRT in maximal inspiratory pressure (MIP), peak expiratory flow (PEF), and exercise tolerance as determined by the six-minute walk test (6MWT) in patients with HF.

Methods:

This study used the 6MWT and Manovacuometer to assess functional capacity in relation to activities of daily living, in which fatigue and dyspnea are common.

Results:

After six months of CRT, this study identified improvements in the 6MWT, p<0.05; MIP, p=0.01; and PEF, p=0.03.

Conclusion:

After CRT, this study showed a significant improvement in MIP, PEF, and exercise tolerance. However, further studies are warranted to demonstrate the relevance of these findings.

Effects of Cardiac Resynchronization Therapy on a Six-minute Walk Test, Maximal Inspiratory Pressure and Peak Expiratory Flow in Patients with Heart Failure: A Longitudinal Study

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