Pituitary disease. A pituitary disease is a disorder primarily affecting the pituitary gland. The main disorders involving the pituitary gland are: Overproduction or underproduction of a pituitary hormone will affect the respective end-organ.
Spinal Infusion Pump. Applies to: Neck, Shoulder, Elbow/Hand/Wrist, Back, Hip, Knee. A spinal infusion pump is a device that delivers concentrated amounts of medication into the spinal fluid space through the use of a small catheter.
Experimental: Rectus sheath block only. 1  Patient will be given surgical rectus sheath block postoperatively with 40ml of bupivacaine (2.5mg/mL) and 0.1ml of normal saline will be injected intrathecally at time of spinal anaesthesia.