Time analysis of pulmonary reexpansion after the acute foreign body airway obstruction removal in miniature pigs / 中国医师杂志

ABSTRACT

Objective To investigate the time of spontaneous recovery of atelectasis after removing the acute airway foreign bodies in miniature pigs.Methods Twenty-two miniature pigs were inserted into the occlusion stent in the right lower lobe bronchus by using bronchoscopy.After confirming the formation of atelectasis,the occlusion stent was removed and the imaging changes were observed for 3 weeks continuously.Results Atelectasis was formed within 1 week after the airway occlusion stent implantation in miniature pigs.Pulmonary reexpansion was observed obviously on week 3 after removal of airway occlusion stent (P ＜0.05).Conclusions The spontaneous recovery time of atelectasis,which caused by an acute foreign body airway obstruction within 1 week,may take 3 weeks at least.