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Related Experiment Videos

[Cardiovascular system function in mitral valve prolapse in fighter pilots].

V P Zakharov, A V Kondakov

    Voenno-Meditsinskii Zhurnal
    |November 1, 1991
    PubMed
    Summary

    Mitral valve prolapse (MVP) in fighter pilots may cause heart rhythm issues under high G-force. Pilots with MVP require careful evaluation for flight safety, especially with severe prolapse and poor G-force tolerance.

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    Area of Science:

    • Cardiovascular Physiology
    • Aerospace Medicine
    • Cardiology

    Background:

    • Mitral valve prolapse (MVP) is a condition affecting heart valve function.
    • Assessing cardiovascular health in aviators is crucial for flight safety.
    • The impact of hypergravity on pilots with MVP requires further investigation.

    Purpose of the Study:

    • To evaluate the cardiovascular response of fighter pilots with MVP during hypergravity exposure.
    • To determine the relationship between MVP severity, G-force tolerance, and cardiac arrhythmias.
    • To inform medical flight expertise guidelines for pilots with MVP.

    Main Methods:

    • Echocardiogram examinations were performed on 250 young fighter pilots.
    • Cardiovascular functional indexes were assessed at rest and during physical load (veloergometry).
    • Tolerance to +Gz hypergravity (≥6 G for 15s) was evaluated, with ECG monitoring for arrhythmias.

    Main Results:

    • 15 out of 250 pilots had MVP without significant regurgitation; most had normal functional indexes.
    • Only 3 pilots showed rare extrasystoles at rest or during moderate exercise.
    • 13 pilots with MVP experienced frequent ventricular extrasystoles during +Gz hypergravity exposure (≥6 G), particularly with more severe MVP.

    Conclusions:

    • MVP in fighter pilots can lead to significant ventricular arrhythmias under high +Gz hypergravity.
    • Medical flight expertise must carefully assess MVP severity and G-force tolerance for pilot selection.
    • Pilots with MVP require individualized risk assessment for flying high-maneuvering, new-generation aircraft.

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