- Left atrial appendage (LAA) closure (LAAC) has emerged as an alternative prevention strategy for patients with nonvalvular atrial fibrillation and contraindications to long-term anticoagulation.1 In randomized trials studying the Watchman device (Boston Scientific, St. Paul, MN), implantation was performed under transesophageal echocardiography (TEE) guidance.1 The use of TEE often mandates the presence of general anesthesia and an additional cardiologist or anesthesiologist to perform TEE. This uses greater health care resources and adds additional complexity to the procedure.
- The anatomy of the ventricular outflow tracts and semilunar valves as it pertains to catheter ablation of outflow tract ventricular arrhythmias (OTVAs) has been described.1 Assessment of semilunar valve and regional anatomy by fluoroscopy and angiography has limitations. Coronary arteries may be subject to damage from catheter ablation near the semilunar valves due to their proximity to sites of origin of OTVAs. Detailed intracardiac echocardiographic (ICE) views of the semilunar valves may be useful to understand the anatomy, catheter location, and coronary artery proximity and variations.