Table 3.

Procedural Characteristics

Procedural characteristics	Overall N=280	None/Mild MAC N=249	Moderate/Severe MAC N=31	P value
Number of clips	1.5 [0.6]	1.5 [0.6]	1.4 [0.5]	0.66
1 Clip	147 (52.5)	131 (52.6)	16 (51.6)	0.91
2 Clips	119 (42.5)	104 (41.8)	15 (48.4)	0.48
>2 Clips	14 (5.0)	14 (5.6)	0 (0)	0.37
Type of MitraClip
Old generation	120 (42.9)	103 (41.4)	17 (54.8)	0.15
NT Classic	15 (5.4)	11 (4.4)	4 (12.9)	0.07
NTR	12 (4.3)	12 (4.8)	0 (0)	0.37
XTR	31 (11.1)	29 (11.6)	2 (6.5)	0.54
NTW	55 (19.6)	53 (21.3)	2 (6.5)	0.05
XTW	36 (12.9)	29 (11.6)	7 (22.6)	0.09
Fluoroscopy time, min	22.8 [17.3]	23.2 [17.9]	19.9 [10.0]	0.33
Left atrial pressure, mm Hg	19.8 [7.7]	19.7 [7.9]	20.9 [6.2]	0.43
V wave, mm Hg	34.5 [17.1]	33.7 [17.3]	40.5 [14.8]	0.04*
Post‐clip
MR severity
None/trace	52 (18.6)	48 (19.3)	4 (12.9)	0.30
Mild	181 (64.7)	157 (63.0)	24 (77.4)
Moderate	38 (13.6)	35 (14.1)	3 (9.7)
Moderate–severe	6 (2.1)	6 (2.4)	0 (0)
Severe	3 (1.1)	3 (1.2)	0 (0)
LAP, mm Hg	15.1 [5.9]	15.09 [6.0]	15.48 [5.0]	0.73
V wave, mm Hg	21.8 [9.5]	21.72 [9.7]	22.6 [8.2]	0.63
Difference pre‐ and postclip
MR reduction, grade	2.7 [0.8]	2.7 [0.8]	2.8 [0.6]	0.38
LAP reduction, mm Hg	4.9 [6.4]	4.8 [6.5]	5.4 [5.4]	0.64
V wave reduction, mm Hg	13.2 [15.0]	12.7 [15.1]	17.5 [13.3]	0.10

Values are expressed as mean [SD] or N (%). LAP indicates left atrial pressure; MAC, mitral annular calcification; and MR, mitral regurgitation.

^* P<0.05.