Shoulder Surgery in Beach Chair Position

You are the anaesthetist for an upper limb orthopaedic list. The next patient on your list is a 55-year-old man for a left arthroscopic acromioplasty and rotator cuff repair in the beach chair position. The expected duration of surgery is 2.5 hours. Medical history: Currently well, generally active Hypertension Obesity (body mass index 35 kg/m2) Smoker 10/day No known allergies Observations: Height 178 cm Weight 110 kg Heart rate 65 beats per minute Blood pressure 125/75 mmHg Medications: Irbesartan 150 mg mane