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August 27, 2013Physiotherapy Research International

CHF patients demonstrated impaired cardiac autonomic modulation at rest and during DB-M compared with healthy subjects (p < 0.05), with significant positive correlations between maximal inspiratory pressure and HRV parameters (e.g., inspiratory-expiratory differences r = 0.79).

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Why the study?

Is inspiratory muscle weakness associated with impaired cardiac autonomic modulation in patients with chronic heart failure?

Population

10 patients with chronic heart failure and 9 matched-age healthy volunteers.

Comparison

Deep breathing manoeuvre and resting state… vs Healthy age-matched volunteers

Design

Cross-sectional

Authors

MRMichel Silva ReisRARoss ArenaBABruno Archiza

Discussion

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Overview

Inspiratory muscle weakness was associated with autonomic impairment in CHF; hypothesis-generating for rehabilitation trials, does not yet change practice.

Structured PICO

Is inspiratory muscle weakness associated with impaired cardiac autonomic modulation in patients with chronic heart failure?

P
Population
10 patients with chronic heart failure (mean age 62 ± 7 years, LVEF 40 ± 5%, NYHA class I-III) and 9 matched-age healthy volunteers (mean age 64 ± 5 years).
I
Intervention
Deep breathing manoeuvre (DB-M) and resting state assessment
C
Comparator
Healthy age-matched volunteers
O
Outcome
Heart rate variability (HRV) at rest and during deep breathing manoeuvresurrogate

Inspiratory muscle weakness in chronic heart failure is significantly associated with impaired cardiac autonomic modulation, highlighting a potential physiological target for respiratory muscle rehabilitation.

Cite This Study

Reis et al. (2013) studied this question.

synapsesocial.com/papers/6a7f65f511d2ce75ff8b1ddbhttps://doi.org/10.1002/pri.1552
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Deep breathing heart rate variability is associated with respiratory muscle weakness in patients with chronic obstructive pulmonary disease2010 · 51 citations
  2. 2Alteration of Inspiratory Muscle Strength is Related to Change in Deep Breathing Heart Rate Variability in Patients Submitted to Open-Heart Surgery2019
  3. 3Breathing pattern, ventilatory drive and respiratory muscle strength in patients with chronic heart failure1994 · 104 citations
  4. 4Acute effects of different inspiratory resistive loading on heart rate variability in healthy elderly patients.2014 · 23 citations
  5. 5Abnormal Awake Respiratory Patterns Are Common in Chronic Heart Failure and May Prevent Evaluation of Autonomic Tone by Measures of Heart Rate Variability1997 · 211 citations