Left ventricular blood flow kinetic energy after myocardial infarction - insights from 4D flow cardiovascular magnetic resonance

Table 7 Comparison of study results in acute versus chronic myocardial infarction

	Acute MI (n = 22)		Chronic MI (n = 26)		P-value
	Mean/Median	SD/IQR	Mean/Median	SD/IQR
Age (years)	55.00	11.36	59.27	10.98	0.19
Gender (Male)					0.53
Body surface area	2.00	0.28	1.95	0.49	0.69
Heart rate (bpm)	68	16	61	10	0.10
Baseline CMR results
IS (% of LV)	24	14	20	11	0.22
LVEDVi (ml/m²)	94	29	99	26	0.54
LVESVi (ml/m²)	57	28	55	30	0.86
SVi (ml/m²)	37	10	44	8	0.02
LVMi (g/m²)	63	22	59	14	0.53
EF (%)	42	12	46	14	0.24
Kinetic Energy Mapping results
LV KEi_EDV	6.7	2.5	6.4	2.0	0.71
Minimal KEi_EDV	0.8	0.7	0.6	0.5	0.53
Systolic KEi_EDV	6.7	2.3	6.7	2.9	0.68
Diastolic KEi_EDV	6.9	3.5	6.1	2.7	0.79
Peak E-wave KEi_EDV	15.6	11.7	16.6	8.7	0.76
Peak A-wave KEi_EDV	11.9	3.9	10.7	8.0	0.51
In-plane LV (%)	37.2	7.2	33.1	8.3	0.75
TD (msecs)	34.0	27.9	33.3	25.6	0.82

Data is presented as mean ± standard deviation (SD) or count (n) for demographics and standard CMR parameters and median ± inter-quartile range (IQR) for KE parameters. LV measurements are indexed to body surface area
All KE values are indexed for LV end-diastolic volume. Units for all KE parameters are μJ/ml
LVEDVi Left ventricular end diastolic volume (indexed), LVESVi Left ventricular end systolic volume (indexed), LVMi left ventricular mass (indexed), MV mitral valve, SVi stroke volume (indexed)

ISSN: 1532-429X