Analgesia Produced by Erector Spinae Block and Incidence of Postoperative Delirium After Hip Fracture Surgeries

This randomized controlled trial will include 120 elderly patients American Society of Anesthesiologists physical status I-II, aged more than 60 years old and undergoing fracture hip surgeries.

all patients will be examined for preoperative cognitive impairment using the short form of the Confusion Assessment Method Survey (CAM) and the long form will be used postoperatively.

The CAM scores is an algorithm that consists of four features:

(i) Acute and fluctuating variation in mental status, (ii) Inattention, (iii) Incoherent or disorganized thinking, and (iv) Altered level of consciousness.CAM scores indicate delirium if the first two features are present and either the third or fourth feature is present.

Patients with a delirium of CAM score>1 will be excluded from the study. also, patients will be asked to rate their baseline pain levels using the numeric rating scales (NRS) from "no pain" to "worst possible pain". patients will be randomly divided into two equal groups Group 1: spinal anaesthesia only. Group 2: spinal anaesthesia with erector spinae block. In both groups, basic monitoring in the form of non-invasive blood pressure (NIBP), pulse oxygen saturation (SPO2)and 5-lead electrocardiogram (ECG) will be attached in the operating room(OR)