Papillary muscle infarction in relation to left ventricular infarct distribution and transmurality - assessment by delayed enhancement cardiac magnetic resonance imaging

Table 1 Infarct size and distribution

	PMI			Posteromedial PMI			Anterolateral PMI
	Present (n=46)	Absent (n=107)	P	Present (n=34)	Absent (n=107)	P	Present (n=17) †	Absent (n=107)	P
INFARCT SIZE
DE-CMR
% LV hyperenhancement	19.5±11.4	15.0±9.5	0.01	19.2±11.4	15.0±9.5	0.03	23.5±14.3	15.0±9.5	0.002
Cardiovascular enzymes
Creatine phosphokinase	2590±2344	2164±1836	0.25	2345±1751	2164±1836	0.63	3014±3282	2164±1836	0.34
Creatine phosphokinase-MB	243±207	199±189	0.30	254±202	199±188	0.22	189±212	199±188	0.89
Duration of symptoms
Chest pain interval (hours)	12.4±9.4	10.5±8.4	0.24	12.7±9.7	10.5±8.4	0.24	13.0±9.5	10.5±8.4	0.26
INFARCT DISTRIBUTION
DE-CMR
Anterior wall	35% (16)	70% (75)	<0.001	15% (5)	70% (75)	<0.001	77% (13)	70% (75)	0.78
Lateral wall	65% (30)	22% (23)	<0.001	74% (25)	22% (23)	<0.001	59% (10)	22% (23)	0.003
Inferior wall	72% (33)	45% (48)	0.003	91% (31)	45% (48)	<0.001	41% (7)	45% (48)	0.78
Invasive angiography (infarct related artery)
Left anterior descending	28% (13)	72% (77)	<0.001	3% (1)	72% (77)	<0.001	71% (12)	72% (77)	1.00
Left circumflex artery	24% (11)	6% (6)	0.001	32% (11)	6% (6)	<0.001	24% (4)	6% (6)	0.03
Right coronary artery	48% (22)	22% (24)	0.002	65% (22)	22% (24)	<0.001	6% (1)	22% (24)	0.19
Anatomically dominant artery*	57% (26)	26% (28)	<0.001	77% (26)	26% (28)	<0.001	6% (1)	26% (28)	0.12

ISSN: 1532-429X