Abstract: Objective To investigate the effect of visualized laryngeal mask airway intubation on hemodynamics in the elderly patients with general anesthesia. Methods Seventy-eight elderly patients with general anesthesia were randomly divided into observation group (receiving visualized laryngeal mask airway intubation, 39 cases) and control group (receiving tracheal intubation, 39 cases) by random number table method. The patients’ heart rate (HR) and mean arterial pressure (MAP) at base value (T0), before intubation immediately (T1), after intubation immediately (T2), 3 min after intubation (T3), when the tube drawing (T4), extubation immediately (T5) and 3 min after extubation (T6) were recorded and compared between the two groups. The operation time, anesthesia time, recovery time and anesthetic dosage were compared between the two groups, and the incidence rates of complications in recovery period and early postoperative period were recorded and compared. Results There was no significant difference in HR at all time points of the observation group (P>0.05), HR at T2, T3, T5 and T6 of the observation group were significantly lower than those of the control group (P<0.05). In the control group, the differences of HR at all time points were statistically significant (P<0.05), in which T1 was lower than T0; T2 and T3 were higher than T0, T1 and T4; T5 was higher than T0-T4; T6 was higher than T0, T1, T3 and T4, but lower than T2 and T5. There were significant differences in MAP at all time points of the two groups. In the observation group, the level of MAP at T0 was lower than that at T1-T6. In the control group, the level of MAP at T0 was higher than that at T1, T3 and T4, but lower than that at T2 and T5, and approximately equal to T6. The levels of MAP at T2, T3, T5 and T6 in the observation group were significantly lower than those in the control group (P<0.05). There were no significant differences in operation time, anesthesia time and the dosage of remifentanil between the two groups (P>0.05). The wake time of the observation group was significantly shorter than that of the control group (P<0.01). The dosage of propofol in the observation group was significantly lower than that in the control group (P<0.01). The incidence rates of cough, body movement, sore throat and swallowing pain in the observation group were significantly lower than those in the control group (P<0.05). There were no significant differences in the incidence rates of nausea, vomiting and hoarseness between the two groups (P>0.05). Conclusions Visualized laryngeal mask airway intubation is safe and reliable in the airway management of the elderly patients with general anesthesia. Compared with tracheal cannula, it has stable hemodynamics and fewer complications, which is worthy of clinical promotion.

Key words: visualization technology, laryngeal mask airway intubation, tracheal cannula, aged, hemodynamics