PMID: 8446790Feb 1, 1993Paper

Cardiovascular function and neurologic outcome after cardiac arrest in dogs. The cardiovascular post-resuscitation syndrome

Resuscitation
E L CerchiariM Pinsky

Abstract

We studied cardiovascular changes and neurologic outcome at 72 h in 42 healthy dogs after normothermic ventricular fibrillation cardiac arrest (no blood flow) of 7.5, 10, or 12.5 min duration, reversed by standard external cardiopulmonary resuscitation (CPR) (< or = 10 min) and followed by controlled ventilation to 20 h and intensive care to 72 h. We found no difference in resuscitability, mortality, neurologic deficit scores, or overall performance categories between the three insult groups. There was no major pulmonary dysfunction. During controlled normotension post-CPR, all dogs presented a transient reduction in cardiac output. In the 12.5-min cardiac arrest group the decrease in cardiac output persisted beyond 12 h post-CPR (P < 0.01) and was associated with more severe arrhythmias (P < 0.05) and worse morphologic myocardial damage (P < 0.01). Both cardiac and neurologic malfunction at 72 h correlated with arrest time. Only cardiac malfunction correlated with CPR time. Neurologic recovery correlated with mild (inadvertent) pre-arrest hypothermia, diastolic arterial pressure during CPR and absence of cardiovascular impairment at 12 h post-CPR. We conclude that prolonged cardiac arrest in previously healthy dogs is followed...Continue Reading

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