Key result
Composite graft replacement of the aortic valve, aortic root, and ascending aorta in a 36-year-old man with a unicuspid aortic valve resulted in postoperative complete heart block requiring a pacemaker.
Why the study?
Unicuspid aortic valve is a rare congenital malformation often associated with valvular dysfunction, aortic aneurysm, and severe calcification that can risk conduction system damage during debridement.
Case Report (n=1)
No
This case highlights the risk of conduction system damage and subsequent complete heart block requiring a pacemaker following aortic valve replacement in patients with unicuspid aortic valves and severe calcification.
Caution for conduction block after composite aortic root replacement in unicuspid valve; leaves open incidence and predictors.
A unicuspid aortic valve is a rare congenital malformation that frequently presents with valvular dysfunction and dilatation or aortic aneurysm, requiring combined aortic valve surgery and aortic repair. Some patients show severe valve calcification extending into the interventricular septum, possibly resulting in damage to the conduction system during debridement for valve replacement. We present a rare case of severe aortic stenosis with a unicommissural unicuspid aortic valve diagnosed by preoperative transesophageal echocardiography in a 36-year-old man. After composite graft replacement of the aortic valve, aortic root, and ascending aorta, a permanent pacemaker was placed because of postoperative complete heart block.
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Park et al. (2019) conducted a case report in Severe aortic stenosis with a unicommissural unicuspid aortic valve (n=1). Composite graft replacement of the aortic valve, aortic root, and ascending aorta (Bentall operation) was evaluated on Postoperative clinical outcome. Composite graft replacement of the aortic valve, aortic root, and ascending aorta in a 36-year-old man with a unicuspid aortic valve resulted in postoperative complete heart block requiring a pacemaker.
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