J.Jpn. Surg. Soc.. 83(6): 515-523, 1982

---

Original article

NEW PULSATILE PUMP USING PULSATILE ASSIST DEVICE-HEMODYNAMIC COMPARISON OF PULSATILE V-A BYPASS (VABP), PULSATILE LEFT HEART BYPASS (LHBP) AND CONSTANT FLOW LEFT HEART BYPASS (LHB)

Recently, we introduced a new method as an assisted circulatory supportive measure for cardiogenie shock. This circuit system consists of a Pulsatile Assist Device (PAD) with two ball valves at its inlet and outlet. So, PAD was used as a pulsatile pump. In VABP group, blood was drained from right atrium and infused into femoral artery during only diastolic period using this device driven by Datascope System 80. On the other hand, blood was drained from left atrium in LHBP and LHB groups. In this series, experimental studies were performed on hemodynamic effects of VABP, LHBP and LHB groups using ten mongrel dogs in each group. Data were obtained during hemodynamically stabilized period at the bypass ratio of about 45ml/kg/min.
Results were as follows, Tention Time Index decreased 9.1±5.9% in LHB group, 10.6±3.7% in VABP group and 13.5±3.1% in LHBP group. Left Atrial Pressure decrease was prominent in left heart bypass groups, especially in LHBP group (decreased 23.5±5.0%). On the other hand, total perfusion flow increased 7.8±5.7% in LHB group, 19.9±4.1% in VABP group and 12.8±6.8% in LHBP group, respectively.
We conclude that our method can be a powerful assisted circulatory supportive measure for cardiogenic shock.

---

---

To read the PDF file you will need Adobe Reader installed on your computer.