Sealing-type Three-cavities Ventilation Joint: A New Device in Painless Bronchoscopy

Abstract

Xiaoshi Liu, Zheng Zhu, Zhenna Wang, Jingtian Han, Jiazhen He, Xiaoshi Liu

Background: To observe the clinical effect and safety of the sealing-type three-cavities ventilation joint in painless bronchoscopy. To compare the respiratory mechanics between I-gel laryngeal mask and tracheal tube-controlled breath during bronchoscopy.
Methods: 200 patients underwent bronchoscopy were recruited and randomly assigned to general anesthesia group (group �?�, n = 100) and local anesthesia group (group �?�, n = 100). General anesthesia group were divided into two groups, the I-gel laryngeal mask combined with sealing-type three-cavities ventilation joint group group(n=50) and the endotracheal tube combined with sealing-type three-cavities ventilation joint group(n=50). Patients in Group I were adopted by I-gel laryngeal mask or endotracheal tube with the sealing-type three-cavities ventilation joint after the induction anesthesia with remifentanil, propofol and succinylcholine. In group II, patients were anaesthetized with lidocaine and followed by 2mg/ kg propofol iv, and spontaneous respirations were retained with nasal cannula. All patients’ vital signs, endoscopic related adverse reactions and arterial blood gas analysis were recorded during the procedure.
Results: Group I showed little changes of vital signs (P <0.05), and less adverse reaction such as the intraoperative hypoxia and intraoperative body movement (P <0.05), and no significant decrease of oxygen partial pressure (P <0.05). There is no significant difference in respiratory mechanics including tidal volume and airway pressure between two subgroups in group I(P>0.05).
Conclusion: Sealing-type three-cavities ventilation joint prevents the oxygen deficit and makes it possible for us to examine patients through bronchoscope under general anesthesia without gas leakage. Moreover, sealing-type three-cavities ventilation joint provides safe and effective airway control while it does not change respiratory mechanics in endotracheal tube group compared with I-gel laryngeal mask makes endotracheal tube an alternative solution in bronchoscope. Take all these in consideration, sealing-type three-cavities ventilation joint proves to be a feasible method in bronchoscope.

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