Hypertrophic obstructive cardiomyopathy and coronary artery spasm

Area of Science:

• Cardiology
• Cardiovascular Medicine
• Clinical Diagnostics

Background:

• Hypertrophic obstructive cardiomyopathy (HOCM) is a primary cardiac condition.
• Coronary artery spasm is a dynamic narrowing of coronary arteries.
• The co-occurrence of HOCM and coronary artery spasm requires further investigation.

Observation:

• Three patients presented with both hypertrophic obstructive cardiomyopathy and coronary artery spasm.
• Echocardiography and angiography confirmed the clinical diagnosis of HOCM.
• Selective coronary arteriography revealed significant right coronary artery spasm in all three patients.

Findings:

• Two patients exhibited ST segment elevation in inferior ECG leads, correlating with coronary spasm.
• One patient had concomitant atherosclerotic obstructive three-vessel disease.
• The other two patients showed no evidence of fixed organic coronary artery narrowing, suggesting spasm as the primary cause of symptoms.

Implications:

• This case series suggests a potential link between HOCM and coronary artery spasm.
• Understanding this association is crucial for accurate diagnosis and management of patients with complex cardiac conditions.
• Further research is warranted to elucidate the pathophysiology and clinical significance of this comorbidity.