Effect of Ultrasound-guided H-FICB in Patients Undergoing Arthroscopic Knee Surgery

Arthroscopic knee surgery is a minimally invasive operation. Postoperative pain usually occurs, especially within 24 hours after surgery, the incidence of pain can be more than 76%. Pain will affect the patient's emotions and life, cause adverse effects, and even lead to postoperative delirium. This study aimed to investigate the clinical effect of ultrasound-guided high fascia iliaca compartment block(H-FICB) in patients undergoing knee arthroscopy and to compare it with the normal method which is femoral nerve block combined with a sciatic nerve block to choose the better way. A double-blind, randomized controlled trial was conducted with 44 patients, aged 18-65 years, ASA I-III, who were scheduled to undergo arthroscopic knee surgery in our hospital were selected, the patients were divided into Group A and Group B by random number table method, with 22 patients in each group. Group A was subjected to the H-FICB under ultrasound guidance before general anesthesia, given 0.375% ropivacaine 30 ml. Group B received ultrasound-guided femoral nerve block combined with sciatic nerve block before general anesthesia, given 0.375% ropivacaine 30 ml. The mini-mental State Examination was used to assess all the patients' primary cognitive status one day before surgery. The initial acting time and the degrees of sensory block and motor block were recorded after the nerve block was completed. Perioperative variables were recorded to be compared. The investigators used the visual analog scale to assess patients' pain degree with postoperative, recorded the occurrence of adverse events such as postoperative nausea and vomiting(PONV), delayed emergence from anesthesia, and respiratory depression. The confusion assessment method was used to assess whether patients experienced delirium.