Relationship between native papillary muscle T1 time and severity of functional mitral regurgitation in patients with non-ischemic dilated cardiomyopathy

Table 2 Comparison of CMR parameters

	DCM MR (+), N = 22	DCM MR (-), N = 18	Controls, N = 20	* P-value DCM MR (+) vs DCM MR (-)	* P-value DCM MR (+) vs Controls	* P-value DCM MR (-) vs Controls
Cine MRI parameters
EDVI, mL/m²	129 ± 43	122 ± 36	80 ± 16	0.79	<0.05	<0.05
ESVI. mL/m²	89 ± 43	84 ± 36	32 ± 10	0.86	<0.05	<0.05
SVI, mL/m²	40 ± 11	38 ± 10	48 ± 10	0.86	0.04	0.02
LVEF, %	34 ± 13	33 ± 11	61 ± 4	0.98	<0.05	<0.05
LVMI, g/m²	67 ± 23	68 ± 17	46 ± 9	0.99	<0.05	<0.05
RVEF, %	52 ± 10	52 ± 14	58 ± 5	1.00	0.15	0.18
LA dimension, mm	58 ± 9	55 ± 7	52 ± 9	0.59	0.06	0.41
LA area (2 chamber view), cm²	29 ± 9	25 ± 6	-	0.21	-	-
LA area (4 chamber view), cm²	28 ± 9	23 ± 6	-	0.07	-	-
LA volume (ml)	125 ± 54	92 ± 31	-	0.04
RA dimension, mm	51 ± 10	52 ± 9	55 ± 9	0.98	0.42	0.58
LGE findings
LV LGE	3 (15 %)	5 (27 %)	0 (0 %)	0.27	0.09	0.01
Papillary muscle LGE	0 (0 %)	0 (0 %)	0 (0 %)	-	-	-

*P value was calculated by one-way ANOVA with Tukey’s correction or Chi-square test
ANOVA analysis of variance, CMR cardiovascular magnetic resonance, DBP diastolic blood pressure, DCM dilated cardiomyopathy, EDV end-diastolic volume, EDVI end-diastolic volume index, EF ejection fraction, ESV end-systolic volume, ESVI end-systolic volume index, HR heart rate, LGE late gadolinium enhancement, LV left ventricle, LVMI left ventricular mass index, MR mitral regurgitation

ISSN: 1532-429X