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Comparative Study
Journal Article
A comparison of PTV and endotracheal ventilation in an acute trauma model.
Journal of Trauma 1985 October
Percutaneous transtracheal ventilation (PTV) is an active airway management technique that may be an alternative to cricothyroidotomy in critically injured patients. A canine trauma model was devised to compare the ventilatory capacity and hemodynamic effects of PTV to endotracheal intubation. Mongrel dogs (25-37 kg), splenectomized 14 days previously, were anesthetized with pentobarbital and bled to a mean arterial pressure (MAP) of 20 mm Hg. Animals were maintained at this MAP for 1 hour, then resuscitated with simultaneous: a) aortic crossclamping via left thoracotomy, b) Ringer's lactate infusion, and c) active airway support. Control animals (N = 5), intubated with a cuffed endotracheal tube, were ventilated at a rate of 12 per minute, a tidal volume of 500 cc and an FIO2 of 60%. In study animals (N = 5), PTV, for a duration of 1 second, was instituted at the same rate and FIO2. There was no statistically significant difference between the two groups with regard to pO2, pCO2, pH, and hemodynamic parameters. PTV was also performed in the emergency department on four patients unresponsive to resuscitative thoracotomy for postinjury cardiac arrest. PTV rate was 12/minute; duration, 1 second; and FIO2, 100%. Mean values (+/- SEM) for pH, pO2, and pCO2 obtained after 15 minutes of PTV were 7.14 +/- 0.03, 322 +/- 49.5 torr, and 21.5 +/- 4.7 torr, respectively. PTV is comparable to endotracheal intubation with respect to oxygenation, ventilation and hemodynamic response (p greater than 0.05). Our preliminary clinical study corroborates its efficacy in the acute trauma setting and supports further clinical investigation.
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