Near-optimal Waveforms for Improving Hemodynamic Effects during EDCPR

Object: To find out near-optimal compression waveforms for electro ventilation double pump cardiopulmonary resuscitation (EDCPR), a Cardiopulmonary resuscitation (CPR) technique, performed on a mathematical circulatory system model. Method: At first, a mathematical circulatory system model was established. Second, the hemodynamic effects of EDCPR to the circulatory system model were performed. Third, a sequential lower limb compression pressure (LLCP) coupled with chest compression-decompression was performed. Results: The proper value and the time sequence of the LLCP were found. And they were in accordance with the results of parallel animal experiments and the data published before. Conclusion: Chest compression-decompression coupled with a sequential LLCP could improve the aortic pressure and myocardial perfusion pressure better than current CPR technique, during cardiac arrest.