Resuscitation
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Comparative Study
Evaluation of LUCAS, a new device for automatic mechanical compression and active decompression resuscitation.
LUCAS is a new gas-driven CPR device providing automatic chest compression and active decompression. In an artificial thorax model, superior pressure and flow were obtained with LUCAS compared with manual CPR. In a randomized study on pigs with induced ventricular fibrillation significantly higher cardiac output, carotid artery blood flow, end-tidal CO(2), intrathoracic decompression-phase aortic- and coronary perfusion pressures were obtained with LUCAS-CPR (83% ROSC) compared to manual CPR (0% ROSC). ⋯ In one hospital patient with a witnessed asystole where manual CPR failed, LUCAS-CPR achieved ROSC within 3 min. One year later the patient's mental capacity was fully intact. To conclude, LUCAS-CPR gives significantly better circulation during ventricular fibrillation than manual CPR.
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Publication of the Utstein style template has made it possible to evaluate and compare national, regional, and hospital based Emergency Medical Services. This research was a national investigation to present outcome data for out-of-hospital cardiac arrest (OHCA) patients in Japan. 3029 OHCA patients who were transported to 10 Emergency and Critical Care Medical Center from November 1997 to April 1999 were recorded according to the Utstein style and the outcome evaluated by logistic regression analysis. Among 3029 OHCA patients, 109 were found dead. ⋯ Follow up evaluation after discharge revealed that the survival rate rapidly decreased from 24 h to 3 months, then became a plateau in primary cardiac patients was rapidly decreased from 24 h to 1 month, then became a near plateau in non-cardiac origin group. To improve the resuscitation rate in the prehospital phase, a prehospital medical control system should be developed with expansion of on scene techniques by Japanese paramedics such as tracheal intubation, administration of emergency drugs and early defibrillation with standing orders. Education and motivation of first responders will be needed and every effort should be concentrated on improving bystander CPR rate.
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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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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.
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Biography Historical Article
William O'Shaughnessy, Thomas Latta and the origins of intravenous saline.