[The effect isometric exertion on left ventricular function in patients after myocardial infarct].
24 patients, after transmural cardiac infarction, were exposed to isometric exercise ("handgrip"). The haemodynamic response was checked by means of impedance plethysmography. The stroke volume decreased on average from 64 +/- 14 to 60 +/- 15 ml (p less than 0.05), cardiac output increased from 4.8 +/- 1.0 to 5.4 +/- 1.2 l/min. (p less than 0.01). Peripheral resistance significantly increased and left ventricular performance was non-significantly reduced. Compared with a group of healthy control, their stroke and cardiac output and cardiac work kept increasing during isometric exercise. Isometric exercise is an adequate means of checking left ventricular performance.
Kozák
P
P
Hes
I
I
Spacek
R
R
Stárek
A
A
Salava
T
T
D001794:Blood Pressure; D006321:Heart / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D007537:Isometric Contraction; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D009203:Myocardial Infarction / Q000503:physiopathology*
Vliv izometrické námahy na výkonnost levé komory u nemocných po prestálém srdecním infarktu.