Resuscitation
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Since adrenaline (epinephrine) also has negative effects during and after cardiopulmonary resuscitation (CPR) a non-adrenergic vasoconstrictor like endothelin might be an alternative to increase vital organ blood flow. We studied the effect of different doses of endothelin-1 compared with adrenaline on the ability to resuscitate, cerebral and myocardial blood flow (MBF) in a closed chest cardiac arrest pig model. After 5 min of ventricular fibrillation, CPR with a ventilator and a mechanical compression device was started. ⋯ There was no difference in MBF between the treatment groups despite a higher coronary perfusion pressure (CoPP) in the endothelin-1 groups. Restoration of spontaneous circulation could be only achieved in the endothelin-1 50 microg (3 of 7; 43%) and 100 microg (5 of 7; 71%) group. This study suggests that endothelin-1 enhances CBF during CPR better than adrenaline and increases resuscitation success.
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This study analyses, retrospectively, an established data set to measure the effect of the circulation change in European Resuscitation Council Guidelines. This prospective matched control study examined the extent to which Year 6 (10-11 years) children retained and were able to demonstrate the sequencing and assessment skills of Basic Life Support (BLS) techniques 5 months after BLS training through the Injury Minimization Programme for Schools (I. M. ⋯ With strict adherence to Resuscitation Council guidelines, 'optimal' life saving procedures (all primary BLS steps performed optimally), were initiated by very few, marginally better in the intervention than the control group, intervention 6 (1.1%) controls 0 (0%). Some children in both groups performed the cardio-pulmonary resuscitation (CPR) element of BLS in an ineffective manner. Changing the circulation assessment would seem appropriate and allow recognition of life support attempts that are beneficial if not optimal.
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Case Reports
Intra-aortic balloon counterpulsation for cardiogenic shock due to cardiac contusion in an elderly trauma patient.
Blunt thoracic trauma may cause cardiac contusion and cardiogenic shock resistant to inotropic support. The use of intra-aortic balloon counterpulsation (IABCP) as a mechanical means of augmenting cardiac function following cardiac contusion is rare with case reports largely limited to its use in young trauma patients. ⋯ She was successfully managed with invasive monitoring, inotropic support and IABCP. This case provides support for aggressive resuscitation even in the very elderly as recovery from severe cardiac contusion may be possible.
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Previous studies suggest glucose, insulin and potassium (GIK) infusion during ischemia reduces infarct size and improves post-ischemic myocardial function in acute myocardial infarction and following surgical revascularization of the heart. The potential use of GIK when given only during reperfusion after a period of global ischemia, as might occur during cardiac arrest, is unclear. To test the hypothesis that GIK reperfusion improves post-ischemic myocardial bioenergetics and function, we utilized a perfused heart model. ⋯ Hearts reperfused with GIK had significantly higher developed pressure and higher dP/dt than control reperfused hearts. Reperfusion with GIK improved post-ischemic recovery of both contractile function and the myocardial bioenergetic state. GIK may be a viable adjunctive reperfusion therapy following the global ischemia of cardiac arrest to improve post-resuscitation cardiac dysfunction.