Abstract

The ability of a new modification of cardiopulmonary resuscitation (CPR) to deliver oxygen to tissues was evaluated. The method utilizes standard CPR techniques with the addition of manual abdominal compressions (100 mm Hg) interposed between chest compressions, and is termed interposed abdominal compression-CPR (IAC-CPR). Oxygen delivery was measured by a spirometer in a closed circuit designed to permit positive-pressure ventilation synchronized with mechanical chest compression. Ventricular fibrillation was induced electrically in 10 anesthetized dogs. In each dog, trials of IAC-CPR and standard CPR were alternated every five minutes during a 30-minute period. Arterial and central venous blood pressures, oxygen consumption, and Fick cardiac output were monitored. The addition of interposed abdominal compression significantly (P < 0.01) increased each of these hemodynamic indicators. Oxygen delivery increased from 4.12  0.39 ml O2/kg/min during standard CPR to 6.37  0.35 ml O2/kg/min during IAC-CPR. Arterial systolic blood pressure increased from 67  5 mm Hg to 90  5 mm Hg, while diastolic arterial blood pressure rose from 15  2 mm Hg to 33  3 mm Hg. Cardiac output increased from 19.9  2.6 ml/min/kg to 37.5  2.7 ml/min/kg.

Comments

This is the author accepted manuscript version of Voorhees W.D., Niebauer M.J., Babbs C.F., Improved oxygen delivery during cardiopulmonary resuscitation with interposed abdominal compressions, Ann Emerg Med 12, 128-135, 1983. Copyright Elsevier, it is made available here CC-BY-NC-ND, and the version of record is available at https://doi.org/10.1016/S0196-0644(83)80550-2.

Keywords

adjuncts, blood flow, cardiac arrest, IAC-CPR, ventricular fibrillation

Date of this Version

1983

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