[Hemodynamic changes in the decompensated heart during left ventricular assist using a diaphragmatic pneumatic pump].

Hemodynamic changes, including right cardiac output (RCO), mean aortic pressure (mAOP), mean left atrial pressure (mLAP), left ventricular end systolic pressure (LVESP), left ventricular end diastolic pressure (LVEDP), LV dp/dt, systolic pressure time index (SPTI), diastolic pressure time index (DPTI) and endocardial viability ratio (EVR) were monitored in the model of acute left ventricular failure of eight dogs, when assist flow ratio was 40%, 60%, 80% respectively. The results showed that left ventricular assist with the pump improved the circulatory status and underperfused subendocardial muscle of the decompensated left ventricle.