Author + information
- Michael W. McNamara,
- Jeffrey Decker,
- Stacie Vanoosterhout,
- Abbey Mulder,
- Taylor Ten Brock,
- Duane Berkompas,
- Musa Dahu,
- Jessica Parker and
- Ryan Madder
Use of transesophageal echocardiography (TEE) during percutaneous left atrial appendage (LAA) closure requires a TEE physician to stand in close proximity to the patient, often with less shielding than is typically used by interventional physicians. We hypothesized that TEE physicians may receive greater radiation doses than interventional physicians during LAA closure.
Real-time radiation exposure data were prospectively collected by dosimeters worn by physicians performing percutaneous LAA closures. Physicians were blinded to radiation data for the duration of the study. Dosimeter data were used to calculate and compare the effective dose per case for interventional and TEE physicians.
During 30 consecutive LAA closures, the median effective radiation dose per case among TEE physicians was 10.8 [5.9, 24.6] µSv, which was a 3.0-fold greater than interventional physicians (3.6 [1.4, 6.5] μSv) during the same cases (p<0.0001, Figure). Effective doses >20 μSv were observed in 9 (30.0%) cases for TEE physicians and 1 (3.3%) case for interventional physicians (p = 0.0056). The cumulative effective radiation dose over all procedures was 148.6 μSv and 853.3 μSv among interventional and TEE physicians, respectively.
TEE physicians were exposed to significantly more radiation than interventional physicians during percutaneous LAA closures. This observation suggests a need for greater radiation protection for TEE physicians during these procedures.
Poster Hall, Hall A/B
Saturday, March 10, 2018, 10:00 a.m.-10:45 a.m.
Session Title: Interventional Cardiology: Left Atrial Appendage, Mitral and Structural Heart Disease
Abstract Category: 24. Interventional Cardiology: Mitral and Structural Heart Disease
Presentation Number: 1116-283
- 2018 American College of Cardiology Foundation