| Effects of Volumetric Diffusive Respiration ( VDR ) on Cardiopulmonary Hemodynamics and Oxygenation in Dogs. |
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Seong Deok Kim, Jae Hyon Bahk, Ik Soo Chung, Nam Hoon Park |
1Department of Anesthesiology, College of Mediciene, Seoul National University, Seoul, Korea.
2Department of Anesthesiology, National Police Hospital, Seoul, Korea. |
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| Abstract |
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VDR (volumetric diffusive respiration) is the newest high-frequency ventilation technique that combines conventional mechanical ventilation (CMV) and IPV (intrapulmonary percussive ventilation), and is also called HFPV (high-frequency percussive ventilation). To evaluate the effects of VDR on cardiopulmonary hemodynamics and oxygenation, we compared VDR with CMV in 8 mongrel dogs. In both groups, ventilation and oxygenation were well maintained and we couldnt find any differences between groups. Hemodynamically there were no significant differences, but diastolic arterial pressure, pulmonary capillary wedge pressure, coronary perfusion pressure, and both right and left ventricular stroke work index were slightly increased. These results suggest that VDR maintains cardiovascular stability, good ventilation and oxygenation, and there are no differences, compared with CMV, in dogs with normal lung. |
| Key Words:
VDR; Hemodynamics; Oxygenation; Dogs |
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