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Related Experiment Videos

Dyspnoea in chronic primary fibromyalgia.

K Caidahl1, M Lurie, B Bake

  • 1Department of Clinical Physiology, Sahlgren's Hospital, Gothenburg University, Sweden.

Journal of Internal Medicine
|October 1, 1989
PubMed
Summary

Dyspnoea, or shortness of breath, is highly prevalent in women with chronic primary fibromyalgia (CPF). This symptom significantly impairs exercise capacity and may stem from diaphragmatic weakness and inactivity, not heart or lung issues.

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Area of Science:

  • Cardiology
  • Pulmonology
  • Rheumatology

Background:

  • Chronic primary fibromyalgia (CPF) is a debilitating condition affecting many women.
  • Dyspnoea is a common but often unexplained symptom in patients with CPF.

Purpose of the Study:

  • To investigate the prevalence and severity of dyspnoea in women with CPF.
  • To determine the relationship between dyspnoea and exercise capacity in this population.
  • To explore potential causes of dyspnoea in CPF patients.

Main Methods:

  • Assessed dyspnoea using the World Health Organization (WHO) 5-grade scale in 87 women with CPF.
  • Evaluated exercise capacity and cardiorespiratory parameters via graded bicycle exercise tests.
  • Correlated WHO dyspnoea grade with breathing frequency, maximal inspiratory/expiratory pressures, and spirometry.

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Main Results:

  • 84% of women with CPF reported dyspnoea (WHO grades 1-4).
  • Higher WHO dyspnoea grade strongly correlated with reduced exercise capacity (r = -0.48) and lower heart rate response (r = -0.40).
  • Dyspnoea grade correlated with increased resting breathing frequency (r = 0.45) and decreased maximal inspiratory pressure (r = -0.29).

Conclusions:

  • Dyspnoea is a frequent and significant symptom in women with CPF.
  • The findings suggest dyspnoea in CPF is not primarily cardiac or pulmonary.
  • Diaphragmatic muscular insufficiency and physical inactivity are potential contributors to dyspnoea in CPF.