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Recognition and diagnosis of apical hypertrophic cardiomyopathy
Insights
Recognizing apical hypertrophic cardiomyopathy is crucial for understanding patient outcomes. Striking ECG changes mimicking ischemia can be an early clue to this condition.
Area of Science:
- Cardiology
- Cardiovascular Imaging
- Electrophysiology
Background:
- Nonobstructive apical hypertrophic cardiomyopathy requires accurate diagnosis for prognostic assessment.
- Early identification aids in understanding the natural history of the disease.
Observation:
- Patients may present with electrocardiographic repolarization abnormalities suggestive of subendocardial ischemia.
- These changes can mimic acute coronary syndromes, leading to coronary care unit admission.
Findings:
- Two-dimensional echocardiography confirmed apical hypertrophic cardiomyopathy in two patients.
- Left ventriculography was necessary for diagnosis in one patient due to echocardiogram limitations.
- Hemodynamic data from cardiac catheterization indicated restrictive cardiomyopathy in two patients.
Implications:
- Improved diagnostic strategies for apical hypertrophic cardiomyopathy are needed.
- Understanding the link between ECG findings and cardiac structure is vital.
- Further research into the prognosis and management of this condition is warranted.
Abstract:
Recognition and diagnosis of nonobstructive apical hypertrophic cardiomyopathy is important to begin to understand the natural history and prognosis of such patients. Our experience with three patients indicates that a clue to the recognition of apical hypertrophic cardiomyopathy lies in the striking electrocardiographic repolarization changes consistent with subendocardial ischemia often prompting admission to the coronary care unit. The diagnosis of apical hypertrophic cardiomyopathy in two patients was confirmed by two-dimensional echocardiographic apical views, but due to a technically inadequate echocardiogram, the diagnosis in the third patient was made by left ventriculography. Two of the three patients underwent right and left cardiac catheterization and their rest and exercise hemodynamic data were consistent with restrictive cardiomyopathy.