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SPECT imaging of apical hypertrophic cardiomyopathy
William W Chu1, Thomas R Wallhaus, Jesus A Bianco
1Department of Cardiology, University of Wisconsin Hospital & Clinics, Madison, Wisconsin 53792-3248, USA. wwc@medicine.wisc.edu
Insights
Apical hypertrophic cardiomyopathy, prevalent in Japan, presents a unique spade-like left ventricle. This condition is identified by specific ECG and echocardiographic findings, often with mild symptoms.
Area of Science:
- Cardiology
- Cardiovascular Imaging
Background:
- Apical hypertrophic cardiomyopathy (AHC) is a distinct form of hypertrophic cardiomyopathy.
- It is particularly prevalent in Japanese populations.
Observation:
- Characterized by a spade-like left ventricle configuration on contrast angiography.
- ECG findings include giant negative T waves in precordial leads.
- Echocardiography reveals specific structural changes.
Findings:
- The presented case exhibits typical scintigraphic and cardiac echocardiographic findings.
- Absence of an intraventricular pressure gradient is noted.
- Patients often experience mild clinical symptoms.
Implications:
- Understanding these diagnostic features is crucial for accurate AHC diagnosis.
- Highlights the utility of combined scintigraphic and echocardiographic assessment.
- Contributes to the clinical characterization of this cardiomyopathy subtype.
Abstract:
Apical hypertrophic cardiomyopathy, common in Japan, is characterized by a spade-like configuration of the left ventricle on contrast angiography. The condition is identified by giant negative T waves in the precordial echocardiographic leads, no intraventricular pressure gradient, and mild symptoms. A case showing the typical scintigraphic and cardiac echocardiographic findings of apical hypertrophic cardiomyopathy is presented.