Effects of right stellate ganglion block combined with topical anesthesia on heart rate variability in awake patients receiving tracheal intubation

Abstract

Objective: General anesthesia is commonly performed with tracheal intubation. We aimed to evaluate the effects of right stellateganglion block combined with topical anesthesia on the heart rate variability in awake patients receiving tracheal intubation. Methods: A total of 120 eligible patients were equally divided into observation and control groups using a random number table. The observation group underwent right stellate ganglion block combined with topical anesthesia. The excellent and good rate of anesthesia, indicators of vital signs and heart rate variability, incidence rate of adverse reactions, success rate and time consumption of tracheal intubation, postoperative resuscitation and cognitive function score of the two groups were compared. Results: The systolic pressure, diastolic pressure and heart rate significantly increased in both groups during tracheal intubationcompared with those before tracheal intubation, which they were lower in the observation group than those in the control group during tracheal intubation (P<0.05). Low-frequency power, ratio of low-frequency power to high-frequency power and heart rate variability index significantly decreased in both groups during tracheal intubation compared with those before tracheal intubation (P<0.05). Conclusion: Right stellate ganglion block combined with topical anesthesia can work well for awake patients during trachealintubation. Keywords: Anesthetics, topical; block; heart rate; intubation, intratracheal; stellate ganglion.