Abstract：Objective To investigate the perioperative effects of ultrasound iliac inferior abdominal nerve (IHN) and iliac ventral sulcus nerve (IIN) block on pelvic fracture surgery. Methods A total of 90 patients with pelvic fractures who underwent internal fixation surgery in the First People′s Hospital of Shaoguan City from January 2018 to December 2020 were selected as the research subjects. According to random number table method, they were divided into the ultrasound group and the control group, with 45 cases in each group. Patients in the ultrasound group received ultrasound-guided IHN and IIN block combined general anesthesia, while patients in the control group received routine general anesthesia. Hemodynamics, intraoperative anesthesia dosage, postoperative pain in the operative area and the incidence of adverse reactions were compared between the two groups at different time points. Results There were no statistically significant differences in mean arterial pressure (MAP) and heart rate (HR) in the ultrasound group at 5 min before surgery (T0), the beginning of surgery (T1), 30 min (T2), 60 min (T3), at the end of surgery (T4), and 15 min after extubation under general anesthesia (T5) (P>0.05). MAP and HR of the control group at T1 and T2 were lower than T0,the differences were statistically significant (P<0.05). There were no statistically significant differences in MAP and HR at T3, T4 and T5 between the two groups (P>0.05). The dosage of Propofol and Remifentanil in the ultrasound group were less than those in the control group, and the differences were statistically significant (P<0.05). There were no statistically significant differences in the dosage of Sufentanil and Rocuronium between the two groups (P>0.05). The postoperative pain scores in the ultrasound group at 2, 12, 24 and 48 h were lower than those in the control group, and the total incidence of postoperative adverse reactions was lower than that in the control group, and the differences were statistically significant (P<0.05). Conclusion Ultrasoundguided IHN and IIN block combined with general anesthesia can effectively maintain hemodynamic stability during pelvic fracture surgery, reducing the use of narcotic drugs, to relieve postoperative pain, and reduce the occurrence of adverse reactions.
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