The extent of papillary muscle approximation affects mortality and durability of mitral valve repair for ischemic mitral regurgitation

Table 3 Perioperative cardiac sizes and functions

	Incomplete PMA (A)	Complete PMA/LVP- (B)	Complete PMA/LVP+ (C)		P values†
	Incomplete PMA (A)	Complete PMA/LVP- (B)	Complete PMA/LVP+ (C)	A vs. B	A vs. C	B vs. C
Preoperative values
LVDd, mm	66±5	65±5	68±7	1.0	1.0	0.64
LVDs, mm	55±7	57±6	58±8	1.0	0.42	1.0
LVESVI, ml/m²	95±24	112±26	117±46	0.74	0.50	1.0
LVEF, %	35±9	28±4	27±10	0.05	0.039	0.84
MR grade	2.8±1.0	2.9±1.1	2.8±1.1	1.0	1.0	1.0
DCT, ms	208±71	159±47	151±44	0.39	0.09	1.0
IPMD, mm	31±7	28±4	29±5	0.71	1.0	1.0
CH (2CV), mm	11±2	9±2	10±2	0.26	0.24	1.0
CH (4CV), mm	9±2	10±3	10±2	1.0	1.0	1.0
Postoperative values
LVDd, mm	57±6**	58±4**	63±8**	1.0	0.06	0.23
LVDs, mm	48±7**	48±6**	51±11**	1.0	0.35	0.61
LVESVI, ml/m²	64±14**	78±25*	70±26**	0.90	1.0	1.0
LVEF, %	34±10	33±7*	39±14**	1.0	0.78	0.85
MR grade	0.4±0.5**	0.3±0.4**	0.4±0.7**	1.0	1.0	1.0
DCT, ms	274±61*	205±70	207±60*	0.25	0.06	1.0
IPMD, mm	10±7**	7±7*	5±6**	1.0	0.32	1.0
CH (2CV), mm	5±3*	4±3*	3±3**	1.0	1.0	1.0
CH (4CV), mm	4±3**	4±2*	4±3**	1.0	1.0	1.0

PMA = papillary muscle approximation, LVP = left ventriculoplasty, LV = left ventricle, LVDd = LV end-diastolic diameter, LVEF = LV ejection fraction, LVESVI = LV end-systolic volume index, MR = mitral regurgitation, DCT = deceleration time, IPMD = interpapillary muscle distance, CH = coaptation height of the mitral valve, 2CV = 2-chamber apical view, 4CV = 4-chamber apical view.
†Bonferroni corrected P.
*P <0.05 or **P<0.01 compared with preoperative values.

ISSN: 1749-8090