RESUMEN
Objective To compare the clinical effects of visual technological intubation with positioning laryngeal mask and tracheal intubation for the patients under general anesthesia. Method This test contains 80 aged patients under general anesthesia, with ASA I~III, randomly divided into two groups, 40 patients in A group named tracheal intubation group, and the other 40 patients in B group named laryngeal mask group. Relatively record the MAP and HR changes when 5 minutes after enter in operating room and keep quiet (T0), before immediate insert into (laryngeal mask) with tracheal catheter (T1), immediate insert (T2), 3 minutes after insert (T3), removing time (T4), immediate time after remove (T5), 3 minutes after remove (T6), and the occurrence rate of postoperative complications like pharyngalgia etc. Then observe and record the complications like bucking during emergence period, nausea, vomiting, pharyngalgia and hoarseness etc in the early postoperative period and make comparison. Result The patients in A Group and B Group all accept safe operations, there is no obvious changes about MAP and HR before and after the insert and remove laryngeal mask in B Group (P > 0.05); and there is obvious changes about MAP and HR before and after remove tracheal catheter in A Group (P < 0.05), and obviously increased than B Group (P < 0.05). In B Group, the occurrence rate of bucking, nausea, vomiting, and pharyngalgia after operation is obvious less than that in A Group (P < 0.05). Conclusion The application of ultrasonic combined with bronchofiberscope positioning laryngeal mask in airway management of aged patients under general anesthesia is safety and workable. And comparing with tracheal intubation, it has simple operation, smooth and steady hemodynamics and less complications, which is fit for the application of aged patients' airway management under general anesthesia.