A new cardiopulmonary resuscitation method using only rhythmic abdominal compression: a preliminary report.
This article introduces 2 new cardiopulmonary resuscitation (CPR) concepts: (1) the use of only rhythmic abdominal compression (OAC) to produce blood flow during CPR with ventricular fibrillation and (2) a new way of describing coronary perfusion effectiveness, namely, the area between the aortic and right atrial pressure curves, summed over 1 minute, the units being millimeters of mercury per second. We call this unit the coronary perfusion index (CPI). True mean coronary perfusion pressure is CPI/60. We also relate CPI during CPR with ventricular fibrillation to the CPI for the normally beating heart in the same animal, obtained before each experiment. This 11-pig (25-35 kg) study compares the CPI for standard chest-compression CPR and that obtained with OAC-CPR. The coronary perfusion ratio for OAC-CPR compared with standard chest-compression CPR was 1.6 +/- 0.73 (P = .024). In other words, OAC-CPR produced 60% more coronary perfusion than standard chest-compression CPR, with no damage to visceral organs.
Geddes
Leslie A
LA
Weldon School of Biomedical Engineering, Purdue University, W Lafayette, IN 47907, USA. geddes@ecn.purdue.edu
Rundell
Ann
A
Lottes
Aaron
A
Kemeny
Andre
A
Otlewski
Michael
M
D000005:Abdomen; D000818:Animals; D001011:Aorta / Q000503:physiopathology; D001794:Blood Pressure / Q000502:physiology; D016887:Cardiopulmonary Resuscitation / Q000379:methods*; D003326:Coronary Circulation / Q000502:physiology*; D006325:Heart Atria / Q000503:physiopathology; D013552:Swine; D014693:Ventricular Fibrillation / Q000503:physiopathology / Q000628:therapy*