Highlights the rare risk of inducing complete atrioventricular block during left heart catheterization, particularly in patients with preexisting right bundle branch block.
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Alerts to rare AV block risk during left heart catheterization in RBBB; single case leaves open generalizability.
Complete atrioventricular block (CAVB) during cardiac catheterization is a rare complication. We describe a patient with preexisting complete right bundle branch block who developed CAVB during left-sided cardiac catheterization. CAVB was induced when a left-sided catheter was passed through the aortic valve. We speculate that the patient's His bundle was injured by mechanical compression. Physicians should always pay attention to the possibility of the development of CAVB during cardiac catheterization, particularly in patients with preexisting heart block.
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Kuroki et al. (1991) studied this question.
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