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- Mirror-image dextrocardia is the most common form of cardiac malposition and is commonly associated with situs inversus of the abdominal organs
- The anatomic right ventricle is anterior to the left ventricle and the aortic arch curves to the right and posteriorly
- 25% percent of these patients will have associated sinusitis and bronchiactasis (Kartagener’s syndrome)
- ECG changes associated with dextrocardia include:
- Right-axis deviation
- Global negativity in leads I and aVL (negative QRS w/inverted P and T waves)
- Lead aVR similar to the normal aVL (positive QRS)
- Absent R wave progression in precordial leads/dominant S waves
References
Al-Khadra A. Mirror-Image Dextrocardia With Situs Inversus. Circulation. 1995; 91: 1602-1603