Table 1

Left ventricular anterior wall dynamics in patients without collaterals

VariableBaselineMyocardial wall stabilisationCoronary occlusion2 mins after snare release10 mins after snare release
Thickening velocity (cm/s)2.6 (0.6)2.4 (0.7)1.4 (0.6)1-150 1.7 (0.5)1-150 2.6 (0.5)
Thinning velocity (cm/s)3.0 (0.6)2.9 (0.8)1.4 (0.5)** 2.0 (0.8)2.8 (0.5)
Thickening fraction (%)48 (16)50 (10)10 (6)** 29 (10)1-150 47 (13)
Peak power (mW/cm2)33 (5)33 (4)21 (4)** 25 (4)1-150 41 (3)1-150
Regional work (mJ/cm2)4.6 (0.6)4.8 (1.0)2.2 (0.8)** 2.8 (1.0)1-150 5.9 (0.5)1-150
Cycle efficiency (%)60 (10)67 (5)37 (10)** 48 (10)1-150 76 (8)1-150
  • 1-150 p < 0.05 v baseline; **p < 0.01v baseline.