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Related Experiment Videos

Hyperventilation: An important cause of pseudoangina.

D W Evans, L C Lum

    Lancet (London, England)
    |January 22, 1977
    PubMed
    Summary

    Habitual hyperventilation in angina patients can be effectively treated with physiotherapy. Restoring normal breathing patterns resolved symptoms in 76% of patients, offering a new therapeutic approach for cardiac clinic referrals.

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    Area of Science:

    • Cardiology
    • Pulmonology
    • Physiotherapy

    Background:

    • Angina diagnosis can be challenging.
    • Hyperventilation syndrome is often overlooked in cardiac patients.
    • Breathing pattern abnormalities may mimic cardiac symptoms.

    Purpose of the Study:

    • To investigate the prevalence of habitual hyperventilation in patients referred for angina.
    • To evaluate the efficacy of physiotherapy in treating hyperventilation-induced symptoms in this cohort.

    Main Methods:

    • Fifty patients referred for angina evaluation were assessed for hyperventilation.
    • A subset of patients with co-existing organic heart disease was identified.
    • Physiotherapy focused on normalizing breathing patterns was administered.

    Main Results:

    • 50 patients were identified as habitual hyperventilators.
    • 13 patients had concurrent organic heart disease.
    • 76% of patients treated with physiotherapy became symptom-free during follow-up (11-68 months).

    Conclusions:

    • Habitual hyperventilation is a significant factor in patients presenting with angina-like symptoms.
    • Physiotherapy targeting breathing retraining is an effective treatment for hyperventilation syndrome.
    • This approach can successfully manage symptoms, reducing the need for further cardiac investigation or treatment.

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