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[Doppler evaluation of diastolic function in hypertrophic cardiomyopathy]
1Dipartimento di Medicina Interna, Università degli Studi di Roma Tor Vergata, Roma.
Minerva Cardioangiologica
|November 1, 1995
Summary
Diastolic dysfunction is common in hypertrophic cardiomyopathy but not linked to clinical status. However, specific diastolic changes in patients with ventricular tachycardia suggest its importance in prognosis.
Area of Science:
- Cardiology
- Medical Diagnostics
Background:
- Diastolic dysfunction significantly impacts hypertrophic cardiomyopathy (HCM) clinical presentation, even with normal systolic function.
- Morpho-functional parameters and arrhythmias are key prognostic factors in HCM.
Purpose of the Study:
- To assess Doppler echocardiographic diastolic function parameters in 38 HCM patients.
- To correlate these parameters with morpho-functional patterns and clinical features, including NYHA class and ventricular tachycardia.
Main Methods:
- Utilized Doppler echocardiography, a non-invasive method, to analyze diastolic function indexes.
- Correlated findings with myocardial hypertrophy extent/location, left ventricular outflow tract obstruction, NYHA class, and 48-hour ambulatory ECG monitoring for ventricular tachycardia.
Main Results:
- Diastolic abnormalities were prevalent in most HCM patients but showed no clear relation to clinical conditions or typical morpho-functional patterns.
- Increased left atrial size and early diastolic flow deceleration rate were observed in patients with ventricular tachycardia.
Conclusions:
- Diastolic dysfunction in HCM may not directly correlate with clinical status or standard morpho-functional patterns.
- Specific diastolic changes associated with ventricular tachycardia suggest a link between diastolic dysfunction and arrhythmogenic substrate, highlighting its prognostic value in HCM.