Related Experiment Videos
Single coronary artery and sick sinus syndrome
Ching-Chang Fang1, Yeun Tarl Fresner N Jao, Yi Chen
1Cardiovascular Center, Tainan Municipal Hospital, Tainan, Taiwan (ROC).
The Journal of Invasive Cardiology
|June 4, 2002
Summary
Recurrent syncope and dizziness in patients with single coronary arteries can stem from right heart strain. Pacemaker implantation effectively treated these patients refractory to medical therapy.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Electrophysiology
Background:
- Single coronary artery anomalies are rare congenital heart defects.
- These anomalies can lead to myocardial ischemia and arrhythmias.
- Right heart strain is an underrecognized complication.
Observation:
- Two patients presented with recurrent syncope and dizziness.
- Both patients were diagnosed with a single coronary artery anomaly.
- Cardiac evaluation revealed right heart strain in both cases.
Findings:
- One patient had pulmonary hypertension, the other right ventricular outflow obstruction.
- Sinus node dysfunction was identified as the cause of symptoms.
- Medical therapy was ineffective for symptom management.
Implications:
- Single coronary artery anomalies can present with diverse cardiac manifestations.
- Right heart strain and sinus node dysfunction are potential complications.
- Pacemaker implantation offers a viable treatment option for refractory cases.