From: Left ventricular strain and peak systolic velocity: responses to controlled changes in load and contractility, explored in a porcine model
Radial projectjon
Longitudinal projection
Control
cm/sec
4.33 ± 1.29
5.72 ± 1.36
Adrenaline
6.77 ± 2.34
8.86 ± 2.18
Beta blockade
3.82 ± 1/02
3.08 ± 0 92