Objective To investigate the effect of preoperative continuous analgesia of iliac fascia space block in elderly patients with hip fracture. Methods A total of 82 elderly patients with hip fracture admitted in Hubei Aerospace Hospital from August 2019 to September 2020 were selected as the research objects, and they were divided into group A and group B by random ball touch method, with 41 cases in each group. Group A was used preoperative iliac fascial space block for continuous analgesia, and group B was used preoperative disocine for intermittent analgesia. The cognitive function, pain degree and sleep quality of the two groups were compared. Results The mini-mental state examination (MMSE) score of both groups was lower than that of this group at admission 24 h after surgery, the MMSE score of group A was higher than that of group B at 24 h postoperatively, the differences were statistically significant (P<0.05).The visual analog scale (VAS) score of the two groups 12 h after surgery was lower than that of the group at admission,and the VAS score of group A 12 h after surgery was lower than that of group B, the differences were statistically significant (P<0.05). The Leeds sleep evaluation questionaire (LSEQ) score of group A was higher than that of group B on preoperative day 1, postoperative day 1 and postoperative day 2, the differences were statistically significant (P<0.05).Conclusions Preoperative iliac fascial space block has better continuous analgesia effect in elderly patients with hip fracture, and has little effect on postoperative cognitive function, which can reduce their pain sensation,improve the sleep quality of patients during the perioperative period.

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