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Abnormal diastolic flow patterns in hypertrophic cardiomyopathy: evaluation by simultaneous Doppler echocardiography,
P R Silverman1, F J Ten Cate, P W Serruys
1Department of Cardiology, Erasmus University Rotterdam, University Hospital Dijkzigt, The Netherlands.
Insights
This study reveals abnormal diastolic function in hypertrophic cardiomyopathy patients without obstruction. Two distinct diastolic blood flow patterns were identified, highlighting disturbed diastolic function
Area of Science:
- Cardiology
- Cardiovascular Physiology
Background:
- Hypertrophic cardiomyopathy (HCM) is a complex heart condition.
- Understanding diastolic dysfunction is crucial for managing HCM.
Observation:
- A 62-year-old woman with a history of HCM underwent advanced cardiac evaluation.
- Abnormal diastolic relaxation was noted, independent of systolic obstruction.
Findings:
- Two unique patterns of abnormal diastolic blood flow were identified using echocardiography.
- These included left ventricular outflow tract to body flow and mid-diastolic body to mitral flow.
Implications:
- These findings underscore the role of impaired diastolic function in HCM pathogenesis.
- Echocardiographic detection of these patterns can aid in HCM diagnosis and management.
Abstract:
A 62-year-old woman with an 8-year history of hypertrophic cardiomyopathy and recent septal myotomy and/or myectomy underwent simultaneous hemodynamic and two-dimensional and Doppler echocardiographic evaluation. Evidence of abnormal diastolic relaxation in the absence of obstruction or systolic cavity obliteration was observed. Two abnormal patterns of diastolic blood flow were detected: flow from the left ventricular outflow tract toward the left ventricular body during isovolumetric relaxation, and middiastolic blood flow from the left ventricular body toward the mitral apparatus. This case provides evidence of abnormal diastolic function and two patterns of abnormal diastolic blood flow in a patient with hypertrophic cardiomyopathy but without a systolic gradient or cavity obliteration. These findings support the importance of disturbed diastolic function in the pathogenesis of hypertrophic cardiomyopathy.