Traditional Chinese Medicine Hospital of Changzhou Affiliated to Nanjing University of Traditional Chinese Medicine

The use of esketamine sub-anesthetic dose combined with hip capsule peripheral nerve block. The patients were subjected to local anesthesia and punctured through the left radial artery for invasive arterial blood pressure monitoring. Anesthesia induction: the observation group followed by intravenous injection of ketamine 0.2mg/kg, sufentanil 0.3μg/kg, Cyclophenol 0.3mg/kg, midazolam 2mg, rocuronium 0.6mg/kg. After the onset of the drug endotracheal intubation, connect anesthesia machine control breathing. Anesthesia was maintained with 1%~2% sevoflurane inhalation, remifentanil infusion rate was 0.2~0.3 μg/kg·min, sevoflurane was stopped 30 min before the end of the operation. Patient-controlled intravenous analgesia pump (PCIA) was given for postoperative analgesia. PCIA formula: sufentanil 100ug+ondansetron 8mg+ketorolac tromethamine 60mg+saline to 100ml, pump speed 2ml/h, automatic single dose 3ml, lock time 20min.

Esketamine subanesthetic dose combined with lumbar plexus block was used. The patient was placed in the healthy lateral decubitus position and ultrasound-guided puncture was performed 4 cm beside the 3rd and 4th lumbar vertebrae (Figure 1B、C). The frequency of the ultrasound probe was 2-5 MHz, and the probe was adjusted until the images below the transverse processes of the 3rd to 5th lumbar vertebrae and the psoas muscle were clearly displayed, and the needle was inserted close to the probe and retracted in the lumbar plexus, and sufentanil 0.5 μg/kg, propofol 1.5 mg/kg, and rocuronium 0.6 mg/kg were injected after no blood extraction. General anesthesia was then performed using a subanesthetic dose of esketamine and the same maintenance and postoperative analgesic measures were used as in group A.

general anesthesia was performed with esketamine subanesthetic dose. The same maintenance and postoperative analgesia measures were used as in group A.