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Table 2 Study results

From: A CMR study of the effects of tissue edema and necrosis on left ventricular dyssynchrony in acute myocardial infarction: implications for cardiac resynchronization therapy

  Baseline (n=22) Follow-up (n=22) P-value
Days after AMI 7.5±4.1 120.8±20.6 -
Heart rate (bpm) 76±18 68±6 0.006
LVEDD [mm] 51.0±7.7 54.9±7.6 0.0005
LVEDV [ml] 156.8±50.5 177.9±66.4 0.01
LVESV [ml] 96.7±39.2 113.0±50.8 0.005
LVEF [%] 40.5±8.2 38.5±8.6 Ns
LV mass 133±36 121±30 0.02
LVEDV/LVmass 1.19±0.32 1.45±0.36 0.0004
LV-scar (% LV mass) 29.6±9.9 23.7±10.0 0.002
% circumference Edema 57.5±14.0 - -
% circumference Scar 30.6±12.6 - -
csh (AVC) mean [%] 10.7±2.6 12.4±2.3 0.002
T max mean [ms] 345.7±34.5 390.8±35.4 <0.0001
T max SD [ms] 82.2±14.5 79.8±9.5 ns
CURE 0.91±0.05 0.94±0.03 0.004
QRS width (ms) 91.1±8.7 89.2±8.6 ns
  1. Patients measured immediately after acute anterior myocardial infarction (baseline, n=22) and patients measured again four months later (follow-up, n=22) different studied parameters are listed: Left ventricular end-diastolic diameter (LVEDD), left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV), left ventricular ejection fraction (LVEF), scar mass, mean circumferential shortening (csh) over all segments of the left ventricle at aortic valve closure (AVC), mean and SD of time to maximum csh (Tmax) over all segments, the circumferential uniformity ratio estimate (CURE). All values are indicated as mean ± SD.