A 75-year-old man underwent a right total shoulder arthroplasty for degenerative arthritis. He had a medical history of chronic shoulder pain, hypertension, dyslipidemia, and gastroesophageal reflux. The procedure For arthroplasty, the preoperative interscalene block was performed using a 22-gauge needle and 30 ml of 0.5% ropivacaine with real-time ultrasound guidance. Anesthesia was induced using propofol, fentanyl, lidocaine, and rocuronium. Mask ventilation was easy and uncomplicated.

The patient was then intubated in one attempt with a Miller blade and a 7.5 cm endotracheal tube (ETT). Sevoflurane in oxygen/air was used to maintain the anesthesia. Afterward, he was seated in the beach chair position at an angle of 45 o . The standard surgical technique was followed, and the operative time was 80 min. The postoperative period The following morning the patient had dysarthria, a…