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Overexpansion of the 29 mm SAPIEN 3 transcatheter heart valve in patients with large aortic annuli (area > 683 mm 2 ): A case series.
OBJECTIVES: To evaluate overexpanded 29 mm SAPIEN (S3) transcatheter heart valves in patients with aortic annuli area >683 mm2 .
BACKGROUND: The largest valve area the 29 mm S3 is specified for is 683 mm2 . Valve overexpansion has been performed in patients with larger aortic annuli, but data are limited. Moreover, feasibility in areas >740 mm2 is unknown.
METHODS: All 29 mm S3 transcatheter aortic valve replacements (TAVR) at a single center over 23-months were retrospectively reviewed. Patients with annulus areas >683 mm2 were included. Immediate post-TAVR hemodynamics and transthoracic echocardiography (TTE) findings on post-TAVR day-1 and day-30 were recorded.
RESULTS: Of 81 29 mm S3 TAVR cases, 3 (3.7%) met inclusion criteria (patients 1, 2, and 3 had CT-scan derived areas of 748.1 mm2 , 793 mm2 , and 787 mm2 , respectively). Annular eccentricity index ranged from 0.12 to 0.25. All underwent transfemoral TAVR with 29 mm S3 valves overexpanded using +4 mL of contrast. Post-dilatation with +5 mL was performed in patient 2. The average valve shortening was 10.68 mm. On day 1, patients 1 and 2 had trace and mild paravalvular leak (PVL) (respectively), whereas, patient 3 had mild-moderate PVL. Patient 1 was also noted to have trace central AR on day 1. No other central AR was noted. Immediate post-procedure aortic regurgitation (AR) index in patients 1, 2, and 3 was 43, 34, and 33 respectively. At 30 days, AR was completely resolved in patient 1, whereas AR severity in patients 2 and 3 remained similar. No patients had > moderate AR at any point during follow-up. No valve migration or embolization occurred. Patient 1 required a permanent pacemaker. No other major complications were noted. All patients were clinically stable at 30 days.
CONCLUSIONS: TAVR using overexpanded 29 mm S3 in valve areas >740 mm2 (up to 793 mm2 ) seemed to be safe and feasible in our small series. Further study in a larger series is needed to determine clinical outcomes in this patient population.
BACKGROUND: The largest valve area the 29 mm S3 is specified for is 683 mm2 . Valve overexpansion has been performed in patients with larger aortic annuli, but data are limited. Moreover, feasibility in areas >740 mm2 is unknown.
METHODS: All 29 mm S3 transcatheter aortic valve replacements (TAVR) at a single center over 23-months were retrospectively reviewed. Patients with annulus areas >683 mm2 were included. Immediate post-TAVR hemodynamics and transthoracic echocardiography (TTE) findings on post-TAVR day-1 and day-30 were recorded.
RESULTS: Of 81 29 mm S3 TAVR cases, 3 (3.7%) met inclusion criteria (patients 1, 2, and 3 had CT-scan derived areas of 748.1 mm2 , 793 mm2 , and 787 mm2 , respectively). Annular eccentricity index ranged from 0.12 to 0.25. All underwent transfemoral TAVR with 29 mm S3 valves overexpanded using +4 mL of contrast. Post-dilatation with +5 mL was performed in patient 2. The average valve shortening was 10.68 mm. On day 1, patients 1 and 2 had trace and mild paravalvular leak (PVL) (respectively), whereas, patient 3 had mild-moderate PVL. Patient 1 was also noted to have trace central AR on day 1. No other central AR was noted. Immediate post-procedure aortic regurgitation (AR) index in patients 1, 2, and 3 was 43, 34, and 33 respectively. At 30 days, AR was completely resolved in patient 1, whereas AR severity in patients 2 and 3 remained similar. No patients had > moderate AR at any point during follow-up. No valve migration or embolization occurred. Patient 1 required a permanent pacemaker. No other major complications were noted. All patients were clinically stable at 30 days.
CONCLUSIONS: TAVR using overexpanded 29 mm S3 in valve areas >740 mm2 (up to 793 mm2 ) seemed to be safe and feasible in our small series. Further study in a larger series is needed to determine clinical outcomes in this patient population.
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