Application of Modified Laryngeal Mask Airway in Endobronchial Ultra- Sound-guided Transbronchial Needle Aspiration

Objective: To investigate the application of modified laryngeal mask airway in endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA). Methods 70 patients underwent bronchoscopy from March 2012 to June 2012. 46 patients under intravenous anesthesia with sufentanyl and propofol and then received modified laryngeal mask airway for EBUSTBNA, while 24 patients with local anesthesia received only 2% lidocaine for EBUS-TBNA. Systolic blood (SBP), diastolic blood pressure (DBP), heart rate (HR) and pulse oxygen saturation (SpO2) were recorded before examination (T1), at the endobronchial ultrasound probe insertion point (T2), and at 5 min (T3) and 10 min (T4) during examination, and at the end of examination (T5). Results: SpO2 was significantly higher in the general anesthesia group than in the local anesthesia group. In the general anesthesia group, SpO2 was also significantly higher in T2 than T1. There were significant differences in SBP, DBP and HR between two groups. Vital signs were more stable in the general anesthesia group than in the local anesthesia group. No patient in the general anesthesia group had memory of suffering after EBUS-TBNA. Conclusions: Modified laryngeal mask airway in EBUS-TBNA successfully solves the problem of breath management difficulties accompanying inspection and anesthesia sharing a common channel. It appears more comfortable for the patients.