The drain tube of ProSeal laryngeal mask airway can be used as a basic monitor.
Yamashita
Masao
M
D004322:Drainage; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods*; D017214:Laryngeal Masks; D016343:Monitoring, Intraoperative / Q000379:methods*; D019023:Stethoscopes