Two cases of pneumothorax during mechanical ventilation in Vietnamese potbellied pigs.

This case report describes pneumothorax associated with positive pressure ventilation in two Vietnamese potbellied pigs while under general anesthesia. A discussion of possible causes and barotrauma/volutrauma follows. The cause of pneumothorax in both cases was probably an interaction of intermittent positive pressure ventilation with some factor unique to these two pigs.