Author + information
- Jawad Chaudhry,
- David Sedaghat,
- Erik Altman and
- Azhar A. Supariwala
Background: The innovation of new structural interventions has lead to longer and complex procedures which require greater fluoroscopy time. The purpose of this study was to compare the radiation dose to physicians during these cardiac interventions.
Methods: In a single center prospective study, radiation exposure as Lens Dose Equivalence was measured by an optically stimulated luminescence dosimeter. Fluoro time and dose for each procedure was recorded. Prior to each procedure the interventionalist (INTERVN) and echo cardiographer (ECHO) were each given a dosimeter, which were used strictly for these procedures and replaced monthly.
Results: There were a total of 42 procedures over 4 months. 18 Trans catheter Aortic Valve implantations (TAVI), 18 Watchman and 7 MitraClip. The average procedure time for the ECHO was 59 ± 17, 64 ± 14, and 131 ± 47 mins respectively. Median (interquartile) fluoroscopy dose in mGys per procedure was similar in TAVI and MitraClip 701 (478,893) and 786 (645,1346) which is significantly higher than watchman 211 (129, 281) mGys p<0.01. Radiation exposure to ECHO was 40% higher than INTERVN for TAVI/MitralClip i.e 39 ± 14 mrem vs 28 ± 8 mrem; p< 0.001. Radiation exposure per Watchman was low and insignificant (Figure).
Conclusions: TAVI/MitraClip except Watchman expose physicians to significant radiation exposure. ECHO should be aware of such high radiation exposure compared to INTERVN. Further studies should be done to identify procedure related factors to reduce exposure to ECHO.
Poster Hall, Hall C
Saturday, March 18, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Interventional Cardiology: PCI and TAVR in Complex Patients
Abstract Category: 24. Interventional Cardiology: Mitral and Structural Heart Disease
Presentation Number: 1239-123
- 2017 American College of Cardiology Foundation