Table II.

Preoperative and Postoperative Mean Transaortic Pressure Gradients in ViV-TAVI Bioprosthetic Valve Fracture

Patient	Baseline mean gradient, mm Hg	After TAVI, mm Hg	After bioprosthetic valve fracture, mm Hg	1-mo follow-up, mm Hg	12-mo follow-up, mm Hg
1	43	12	9	25	23
2	42	7	5	10	6
3	40	8	8	19	20
4	12	21	15	9	11
5	45	10	7	22	25
6	46	7	7	10	11
7	30	15	14	13	14
8	49	15	9	14	15
9	44	12	13	17	19
10	67	15	10	14	13
11	33	12	7	11	13
12	47	28	10	9	N/A
13	54	17	3	16	17
14	51	15	7	8	7
15	19	12	9	11	12
16	37	18	11	9	9
17	27	10	7	10	8
18a	40	18	8	14	8
19	37	10	6	9	10
20	41	28	12	14	10
21a	50	23	11	17	14
22	60	20	11	13	7
23	48	29	8	9	11
24	41	13	8	14	12
25a	32	N/A	4	13	4

N/A, not applicable; TAVR, transcatheter aortic valve implantation.

SI conversion factor: To convert mm Hg to kPa, multiply by 0.133.

^aPost-TAVI gradients were not obtained for patients 18, 21, and 25 because the TAVI valve could not fully expand secondary to restriction by the bioprosthetic valve. Bioprosthetic valve fracturing was therefore promptly pursued.