Resuscitation
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Comparative Study
Tracheal temperature for monitoring body temperature during mild hypothermia in pigs.
Out-of-hospital induction of mild therapeutic hypothermia after cardiac arrest needs easy to use and accurate body temperature monitoring. The aim of the study was to evaluate the best temperature probe position on a specially designed tracheal tube, as compared to pulmonary artery temperature (Tpa) during cooling to mild hypothermia in pigs. ⋯ Tracheal temperature is an accurate surrogate for body temperature during fast and slow cooling to mild hypothermia in pigs and regardless of the location of the temperature probe on the tube.
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Comparative Study
Utility of the Pentax-AWS without interruption of chest compression: comparison of the Macintosh laryngoscope with the Pentax-AWS in manikin model.
Emergency airway management in suboptimal conditions can result in difficulties in tracheal intubation. The video laryngoscope (Pentax-AWS) has potential advantages during difficult tracheal intubations. According to the 2005 guidelines for cardiopulmonary resuscitation (CPR), all rescuers should minimize interruption of chest compressions. Our hypothesis is that tracheal intubation using the Pentax-AWS is possible without interruption of chest compressions. We tested this using tracheal intubation performed by less experienced medical personnel in a manikin model. ⋯ The Pentax-AWS was an effective tool for endotracheal intubation during chest compression performed by less experienced medical personnel in a manikin model simulating cardiac arrest, both under conditions of normal and difficult airways.
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This study was done, using a swine model of prolonged ventricular fibrillation out-of-hospital cardiac arrest, to determine the feasibility of inducing therapeutic hypothermia after successful resuscitation by giving an intraosseous infusion of iced saline. ⋯ Mild therapeutic hypothermia can be effectively induced in swine after successful resuscitation of prolonged ventricular fibrillation by infusion of iced saline through an IO needle.
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Hypocalcemia associated with cardiac arrest has been reported. However, mechanistic hypotheses for the decrease in ionized calcium (iCa) vary and its importance unknown. The objective of this study was to assess the relationships of iCa, pH, base excess (BE), and lactate in two porcine cardiac arrest models, and to determine the effect of exogenous calcium administration on post-resuscitation hemodynamics. ⋯ Ionized hypocalcemia occurs following ROSC. CaCl(2) improves post-ROSC hemodynamics suggesting that hypocalcemia may play a role in early post-resuscitation myocardial dysfunction.