1. Shoulder arthroscopy with the patient in the beach-chair position.;Skyhor;Arthroscopy,1988
2. A retrospective comparison of interscalene block and general anesthesia for ambulatory surgery shoulder arthroscopy.;D'Alessio;Reg Anesth,1995
3. Interscalene brachial plexus block for shoulder surgery.;Tetzlaff;Reg Anesth,1994
4. Activation of the Bezold-Jarisch reflex in the sitting position for shoulder arthroscopy using interscalene block.;D'Alessio;Anesth Analg,1995
5. Provocation of bradycardia and hypotension by isoproterenol and upright posture in patients with unexplained syncope.;Almquist;N Engl J Med,1989