Chest Tube Versus Pigtail Catheter Drainage of On-Going Hemothorax in Swine (Sus scrofa)
DAVID GRANT USAF MEDICAL CENTER TRAVIS AFB CA TRAVIS AFB
Pagination or Media Count:
Background We compared pigtail catheters with chest tubes for the drainage of acute HTx in a swine model. Methods Six Yorkshire-cross swine were anesthetized, instrumented, and mechanically ventilated. A 32F chest tube was placed in one randomly assigned hemothorax a 14F pigtail catheter was placed in the other. Each was connected to a chest drainage system at -20 cm H2O suction and clamped. Seven hundred-fifty milliliters of the withdrawn blood was instilled into each pleural space, and fluid resuscitation with colloid was initiated. Output from each drain was measured every minute for 5 minutes, then every 5 minutes for 40 minutes. Results Blood drainage was more rapid from the chest tube during the first three minutes compared to the pigtail catheter 348 - 109 mLmin vs. 176 - 53 mLmin but this difference was not statistically significant p0.19. Thereafter, the rates of drainage between the two tubes were not substantially different. The chest tube drained a higher total percentage of the blood from the chest 87.3 vs 70.3, but this difference was not statistically significant p0.21. Conclusion We found no statistically significant difference in the volume of blood drained by a 14F pigtail catheter compared to a 32F chest tube.
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