title: Pulse oximeters and poor perfusion.
authors.forename: C D
authors.initials: CD
authors.lastname: Hanning
mesh_terms: D004868:Equipment Failure; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D010092:Oximetry / Q000295:instrumentation*; D014680:Veins / Q000503:physiopathology