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Heart rate recovery in the first minute at the six-minute walk test in patients with heart failure.

Lindemberg S, Chermont S, Quintão M, Derossi M, Guilhon S, Bernardez S, Marchese L, Martins W, Nóbrega AC, Mesquita ET - Arq. Bras. Cardiol. (2014)

Bottom Line: HRR1 and 6MWD were significantly different in the 3 groups.HRR1 response was attenuated in patients using βB and showed correlation with 6MWD, reflecting better exercise tolerance.HRR1 after 6MWT seems to represent an alternative when treadmill tests could not be tolerated.

View Article: PubMed Central - PubMed

Affiliation: Programa de Pós-graduação em Ciências Cardiovasculares, Universidade Federal Fluminense, Niterói, RJ, Brasil.

ABSTRACT

Background: Heart rate recovery at one minute of rest (HRR1) is a predictor of mortality in heart failure (HF), but its prognosis has not been assessed at six-minute walk test (6MWT) in these patients.

Objective: This study aimed to determine the HRR1 at 6MWT in patients with HF and its correlation with six-minute walk distance (6MWD).

Methods: Cross-sectional, controlled protocol with 161 individuals, 126 patients with stable systolic HF, allocated into 2 groups (G1 and G2) receiving or not β-blocker and 35 volunteers in control group (G3) had HRR1 recorded at the 6MWT.

Results: HRR1 and 6MWD were significantly different in the 3 groups. Mean values of HRR1 and 6MWD were: HRR1 = 12 ± 14 beat/min G1; 18 ± 16 beat/min G2 and 21 ± 13 beat/min G3; 6MWD = 423 ± 102 m G1; 396 ± 101 m G2 and 484 ± 96 m G3 (p < 0.05). Results showed a correlation between HRR1 and 6MWD in G1(r = 0.3; p = 0.04) and in G3(r = 0.4; p= 0.03), but not in G2 (r= 0.12; p= 0.48).

Conclusion: HRR1 response was attenuated in patients using βB and showed correlation with 6MWD, reflecting better exercise tolerance. HRR1 after 6MWT seems to represent an alternative when treadmill tests could not be tolerated.

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Related in: MedlinePlus

Comparison of 6MWD in 3 groups. 6MWD: six-minute walk distance
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f04: Comparison of 6MWD in 3 groups. 6MWD: six-minute walk distance

Mentions: The 3 groups were different when 6MWD was compared, as observed in figure 4. (p = 0.0038) Mean values of 6MWD were: 423 ± 102 m for G1;396 ± 101 m for G2 and 484 ± 96 m for G3.


Heart rate recovery in the first minute at the six-minute walk test in patients with heart failure.

Lindemberg S, Chermont S, Quintão M, Derossi M, Guilhon S, Bernardez S, Marchese L, Martins W, Nóbrega AC, Mesquita ET - Arq. Bras. Cardiol. (2014)

Comparison of 6MWD in 3 groups. 6MWD: six-minute walk distance
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3987314&req=5

f04: Comparison of 6MWD in 3 groups. 6MWD: six-minute walk distance
Mentions: The 3 groups were different when 6MWD was compared, as observed in figure 4. (p = 0.0038) Mean values of 6MWD were: 423 ± 102 m for G1;396 ± 101 m for G2 and 484 ± 96 m for G3.

Bottom Line: HRR1 and 6MWD were significantly different in the 3 groups.HRR1 response was attenuated in patients using βB and showed correlation with 6MWD, reflecting better exercise tolerance.HRR1 after 6MWT seems to represent an alternative when treadmill tests could not be tolerated.

View Article: PubMed Central - PubMed

Affiliation: Programa de Pós-graduação em Ciências Cardiovasculares, Universidade Federal Fluminense, Niterói, RJ, Brasil.

ABSTRACT

Background: Heart rate recovery at one minute of rest (HRR1) is a predictor of mortality in heart failure (HF), but its prognosis has not been assessed at six-minute walk test (6MWT) in these patients.

Objective: This study aimed to determine the HRR1 at 6MWT in patients with HF and its correlation with six-minute walk distance (6MWD).

Methods: Cross-sectional, controlled protocol with 161 individuals, 126 patients with stable systolic HF, allocated into 2 groups (G1 and G2) receiving or not β-blocker and 35 volunteers in control group (G3) had HRR1 recorded at the 6MWT.

Results: HRR1 and 6MWD were significantly different in the 3 groups. Mean values of HRR1 and 6MWD were: HRR1 = 12 ± 14 beat/min G1; 18 ± 16 beat/min G2 and 21 ± 13 beat/min G3; 6MWD = 423 ± 102 m G1; 396 ± 101 m G2 and 484 ± 96 m G3 (p < 0.05). Results showed a correlation between HRR1 and 6MWD in G1(r = 0.3; p = 0.04) and in G3(r = 0.4; p= 0.03), but not in G2 (r= 0.12; p= 0.48).

Conclusion: HRR1 response was attenuated in patients using βB and showed correlation with 6MWD, reflecting better exercise tolerance. HRR1 after 6MWT seems to represent an alternative when treadmill tests could not be tolerated.

Show MeSH
Related in: MedlinePlus