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Detection of dysrhythmia in pediatric patients with mitral valve prolapse
Insights
Potentially serious ventricular dysrhythmias are common in children with mitral valve prolapse. Treadmill exercise testing and ambulatory ECG monitoring effectively detect these arrhythmias in pediatric patients.
Area of Science:
- Pediatric Cardiology
- Electrophysiology
- Cardiac Diagnostics
Background:
- Mitral valve prolapse (MVP) is a common condition in children.
- The association between MVP and cardiac dysrhythmias requires further investigation.
- Identifying arrhythmias in pediatric MVP patients is crucial for risk stratification.
Purpose of the Study:
- To investigate the prevalence of dysrhythmias in pediatric patients diagnosed with mitral valve prolapse.
- To evaluate the utility of graded treadmill exercise testing and 24-hour ambulatory ECG monitoring in detecting these dysrhythmias.
Main Methods:
- Studied 26 pediatric patients with confirmed mitral valve prolapse.
- Utilized 24-hour ambulatory ECG monitoring to detect arrhythmias.
- Employed graded treadmill exercise testing to assess cardiac response during exertion.
Main Results:
- Potentially serious ventricular dysrhythmias were detected in 23% of patients via ambulatory ECG monitoring.
- Five of these patients also showed ventricular dysrhythmias during treadmill testing.
- No correlation was found between standard ECG abnormalities or clinical symptoms and the presence of dysrhythmias.
Conclusions:
- Potentially serious ventricular arrhythmias are prevalent in pediatric patients with mitral valve prolapse.
- Ambulatory ECG monitoring and treadmill exercise testing are valuable tools for identifying dysrhythmias in this population.
- Further research may be warranted to understand the clinical implications of these findings.
Abstract:
The association of dysrhythmias with mitral valve prolapse in pediatric patients was investigated by graded treadmill exercise testing and 24-hour ambulatory ECG monitoring. Twenty-six unselected patients with a clinical diagnosis of mitral valve prolapse confirmed by echocardiography or angiocardiography or both were studied. On 24-hour ambulatory ECG monitoring, six patients (23%) had potentially serious ventricular dysrhythmias. Five of these patients also manifested ventricular dysrhythmias on treadmill exercise testing. Neither standard ECG abnormalities nor clinical symptoms correlated with detected dysrhythmias. This study shows that potentially serious ventricular arrhythmias are common in pediatric patients with mitral valve prolapse and that ambulatory ECG monitoring and treadmill exercise testing are useful for detecting dysrhythmias.