Abstract:
BACKGROUND AND OBJECTIVE:Chest compressions before initial defibrillation attempts have been shown to increase successful defibrillation. This animal study was designed to assess whether ventricular fibrillation mean frequency after 90 s of basic life support cardiopulmonary resuscitation (CPR) may be used as an indicator of coronary perfusion and mean arterial pressure during CPR. METHODS AND RESULTS:After 4 min of ventricular fibrillation cardiac arrest in a porcine model, CPR was performed manually for 3 min. Mean ventricular fibrillation frequency and amplitude, together with coronary perfusion and mean arterial pressure were measured before initiation of chest compressions, and after 90 s and 3 min of basic life support CPR. Increases in fibrillation mean frequency correlated with increases in coronary perfusion and mean arterial pressure after both 90 s (R=0.77, P<0.0001, n=30; R=0.75, P<0.0001, n=30, respectively) and 3 min (R=0.61, P<0.001, n=30; R=0.78, P<0.0001, n=30, respectively) of basic life support CPR. Increases in fibrillation mean amplitude correlated with increases in mean arterial pressure after both 90 s (R=0.46, P<0.01; n=30) and 3 min (R=0.42, P<0.05, n=30) of CPR. Correlation between fibrillation mean amplitude and coronary perfusion pressure was not significant both at 90 s and 3 min of CPR. CONCLUSIONS:In this porcine laboratory model, 90 s and 3 min of CPR improved ventricular fibrillation mean frequency, which correlated positively with coronary perfusion pressure, and mean arterial pressure.
journal_name
Resuscitationjournal_title
Resuscitationauthors
Achleitner U,Wenzel V,Strohmenger HU,Lindner KH,Baubin MA,Krismer AC,Mayr VD,Amann Adoi
10.1016/s0300-9572(01)00388-4keywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
151-8issue
2eissn
0300-9572issn
1873-1570pii
S0300-9572(01)00388-4journal_volume
51pub_type
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