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Related Experiment Videos

[Mitral prolapse and the ergometric findings].

L Irace1, I Guadagno, G Cice

  • 1Cattedra di Cardiologia, I Facoltà di Medicina e Chirurgia, Università degli Studi di Napoli Federico II.

Minerva Cardioangiologica
|July 1, 1992
PubMed
Summary

Patients with mitral valve prolapse (MVP) experiencing chest discomfort showed a higher incidence of arrhythmias during exercise stress tests (EST), particularly those with prolapse in both mitral leaflets.

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Area of Science:

  • Cardiology
  • Exercise Physiology

Background:

  • Mitral valve prolapse (MVP) is a common valvular heart condition.
  • The clinical significance of arrhythmias and ECG changes during exercise in MVP patients requires further elucidation.

Purpose of the Study:

  • To evaluate the incidence and significance of arrhythmias and ECG changes during exercise stress tests (EST) in patients with mitral valve prolapse (MVP).

Main Methods:

  • 42 consecutive patients with MVP underwent symptom-limited cycloergometer EST.
  • Patients were divided into two groups based on echocardiographic evidence: prolapse of one mitral leaflet (Group A) and prolapse of both mitral leaflets (Group B).
  • Arrhythmias, ST impairment, and anamnestic cardiopalm were assessed during EST.

Main Results:

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  • Arrhythmias during EST were significantly more frequent in Group B (20%) compared to Group A (0%).
  • A strong correlation (75%) was observed between anamnestic cardiopalm and arrhythmias during EST.
  • Three out of four patients with ST impairment during EST showed non-reversible perfusion defects on thallium myocardial scintigraphy.

Conclusions:

  • Patients with MVP affecting both mitral leaflets exhibit a higher incidence of arrhythmias during EST.
  • Anamnestic cardiopalm is strongly associated with the presence of arrhythmias during EST in MVP patients.
  • Exercise stress testing is valuable in assessing the risk of arrhythmias and potential myocardial ischemia in MVP patients.