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Mitral valve prolapse and pre-excitation
Pacing and Clinical Electrophysiology : PACE
|September 1, 1982
Summary
Mitral valve prolapse (MVP) can coexist with pre-excitation syndromes like Wolff-Parkinson-White. This suggests MVP in these conditions may not solely result from abnormal ventricular activation patterns.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Imaging
Background:
- Mitral valve prolapse (MVP) is a common valvular condition.
- Pre-excitation syndromes, such as Wolff-Parkinson-White (WPW) syndrome, involve accessory electrical pathways in the heart.
- The relationship between MVP and pre-excitation syndromes requires further elucidation.
Observation:
- Two patients (1.7%) with mitral valve prolapse (MVP) were diagnosed with pre-excitation.
- One patient presented with Lown-Ganong-Levine syndrome and MVP.
- Another patient with intermittent type B Wolff-Parkinson-White syndrome showed persistent MVP.
Findings:
- The co-occurrence of MVP and pre-excitation was observed in a small subset of patients.
- The findings challenge the hypothesis that MVP in pre-excitation syndromes is always secondary to abnormal left ventricular activation.
- Persistence of MVP irrespective of pre-excitation status in one case supports this challenge.
Implications:
- These observations suggest that MVP in pre-excitation syndromes may have independent etiologies.
- Further research is needed to understand the complex interplay between valvular and electrical abnormalities.
- Clinical management may need to consider potential distinct pathophysiological mechanisms.