ABSTRACT
In order to confirm effective retrobulbar anesthesia, we attempted to stimulate the oculocephalic reflex (the doll's head phenomenon) in 40 consecutive patients undergoing elective cataract extraction with intravenous sedation. Thirty-nine of these 40 patients had a positive response, exhibiting the reflex in the nonanesthetized eye but not in the anesthetized eye. Using this test in sedated patients obviates interrupting surgery to administer additional block under less than optimal, uncontrolled conditions.
Subject(s)
Anesthesia, Local , Eye Movements , Reflex/physiology , Anesthesia, Local/methods , Cataract Extraction , Humans , Hypnotics and Sedatives/administration & dosage , Nerve Block , Orbit , Prospective StudiesABSTRACT
The TRIUMF 520 MeV H- cyclotron produces intense beams of protons, pions and muons supporting basic research in nuclear, particle and solid-state physics, nuclear chemistry and biomedicine, and applied research in electromagnetic breeding of nuclear fuel, proton radiography, radioisotope production and cancer treatment.
