title: An unusual problem with pulse oximetry.
authors.forename: R
authors.initials: R
authors.lastname: Spencer
mesh_terms: D000368:Aged; D005547:Foreign Bodies / Q000209:etiology*; D006801:Humans; D007431:Intraoperative Complications; D008297:Male; D016343:Monitoring, Intraoperative / Q000295:instrumentation*; D010092:Oximetry / Q000295:instrumentation*; D010614:Pharynx