Abstract：Objective To explore the clinical effect of ultrasound-guided sacral block in anorectal surgery. Methods Between January 2017 and March 2018, 208 patients were selected for anorectal surgery in our hospital. These patients were divided into the ultrasound group (104 cases) and traditional group (104 cases) by random allocation. The ultrasound group received ultrasound guided localization of sacral block anesthesia and in the traditional group, sacral block anesthesia was located by traditional anatomy. The puncture conditions (the duration of puncture, numbers of times of needles were adjusted, onset time and duration of analgesia), success rate of anesthesia, satisfaction rate of patients and postoperative complications were recorded respectively in the two groups. Results The number of times needle penetration was adjusted was (2.50±0.50 vs 5.00±1.00), the onset time of anesthesia (2.85±1.30 vs 4.88±0.92) and the duration of analgesia was (4.85±1.24 vs 7.86±2.12)min in the ultrasound group, lower than those in the traditional group ( P<0.05).The duration of puncture of the ultrasound group was significantly longer than that of the traditional group (12.82±3.50 vs 5.73±2.12). The percentage of anesthesia level Ⅰ in the ultrasound group (63.5% vs 43.3%) and success rate of anesthesia (94.2% vs 83.7%) were significantly higher than those of the traditional group (P<0.05). The percentage of ultrasonic anesthesia level Ⅲ in the ultrasound group was significantly lower than in the traditional group (1.0% vs 7.7%), P<0.05. The incidence of hematoma (9.6% vs19.2%), bleeding (7.7% vs 18.3%)and neuroinjection-related complications (2.9% vs 9.6%) in the ultrasound group was significantly lower than that in the traditional group. Conclusions Sacral block anesthesia guided by ultrasonography can be accurately positioned in anorectal surgery to improve the success rate of block, reduce complications and increase patient satisfaction, which is worthy of clinical application.
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2019, Vol. 30 
