Objective To compare the hemodynamic response and ventilation after standard cardiopulmonary resuscitation (S-CPR) and cardiac massage under the diaphragmatic muscle （D-CPR）during laparotomy in cardiac arrest of swine. Methods Fourteen healthy domestic pigs were anesthetized and intubated. After preoperotive preparation and the hemodynamics was stable for 5 minutes, the readings of aortic systolic pressure(AOS), aortic diastolic pressure(AOD), and right atrial pressure（RAP） were recorded consecutively. Pigs were randomized to receive either S-CPR (n=7) or D-CPR (n=7). Cardiac arrest was induced with overdosed bupivacaine. After 2 min of untreated time, they were resuscitated, and hemodynamic variables, PETCO2, VT and ECG were continuously recorded. Coronary perfusion pressure (CPP) was calculated as arterial diastolic pressure minus right atrial diastolic pressure. Results D-CPR during cardiac massage, compared with S-CPR, resulted in a significant increase in VT, DAP and CPP. Conclusions D-CPR can provide higher arterial pressure and ventilation; D-CPR is superior to S-CPR.
Key words
cardiopulmonary resuscitation /
diaphragmatic muscle /
tidal volume /
coronary perfusion pressure
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(2012-06-17
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