title: A simple automatic record of oxygenation and ventilation with a pulse oximeter and a carbon dioxide monitor.
abstract: Many cases have come to medicolegal attention in which a healthy patient undergoing a routine, elective operation has had an unexpected cardiac arrest attributed to hypoxia or hypercarbia. A simple, objective, automatic, inexpensive record of the adequacy of oxygenation and ventilation was obtained by using the Nellcor N-100 pulse oximeter, the Puritan-Bennett/Datex carbon dioxide monitor, and the Nellcor N-9000 recorder in combination. The required interface is described, and a sample record is presented. A second interface allows the recorder to work with the Puritan-Bennett anesthesia and brain activity monitor (ABM-1). Oxygen saturation can also be displayed on the video screen of the anesthesia and brain activity monitor.
mesh_terms: D001331:Automation; D002245:Carbon Dioxide / Q000097:blood; D006339:Heart Rate; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis / Q000517:prevention & control; D008499:Medical Records / Q000592:standards*; D010092:Oximetry / Q000295:instrumentation* / Q000379:methods; D010100:Oxygen / Q000097:blood
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen