• Resuscitation · Apr 1989

    Comparative Study

    The effect of cardiopulmonary bypass resuscitation on cardiac arrest induced lactic acidosis in dogs.

    • D L Carden, G B Martin, R M Nowak, C C Foreback, and M C Tomlanovich.
    • Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI 48202.
    • Resuscitation. 1989 Apr 1;17(2):153-61.

    AbstractThe adequacy of end organ blood flow following a cardiac arrest varies depending on the artificial reperfusion technique utilized and may critically affect patient outcome. Both oxygen consumption (VO2) and arterial lactate values have previously been used to assess tissue perfusion. Cardiopulmonary bypass resuscitation (CPB) is a reperfusion technique capable of providing near normal end organ blood flow. The purpose of this investigation was to study the effect of femoro-femoral veno-arterial CPB resuscitation compared to standard CPR on VO2 and arterial lactic acid values after a prolonged cardiac arrest. Ten mongrel dogs were electrically fibrillated and left in cardiopulmonary arrest without therapy for 12 min. Resuscitation was attempted according to a standardized protocol utilizing either CPB (n = 5) or standard external CPR (n = 5). Oxygen consumption values and arterial lactic acid samples were obtained at baseline, at timed intervals throughout resuscitation and after return of spontaneous circulation in successfully resuscitated dogs. Baseline hemodynamic and biochemical measurements were similar in both treatment groups (P greater than 0.05). Oxygen consumption (440 +/- 50 ml/min/M2) and mean arterial lactic acid values (7.44 +/- 2.25 mmol/l) were significantly higher at 1 min of resuscitation in CPB-treated dogs compared to dogs treated with CPR (60 +/- 10 ml/min/M2) (3.16 +/- 0.69 mmol/l) respectively (P less than 0.05). Mean arterial lactic acid values rose significantly at each sampling interval during CPR (P less than 0.05) but began to decrease after 5 min of resuscitation in the CPB animals and were not significantly different than baseline after 60 min of bypass (P greater than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

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