title: Interference in a pulse oximeter from a fiberoptic light source.
abstract: A healthy patient who was undergoing cystoscopy suddenly showed a rapid increase in heart rate on a pulse oximeter. The cause was determined to be incident light from the light source for the cystoscope.
mesh_terms: D000328:Adult; D020684:Cystoscopes; D004868:Equipment Failure; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D008297:Male; D010092:Oximetry / Q000295:instrumentation*