Taylor M B, Whitwam J G
Department of Anaesthetics, Royal Postgraduate Medical School, Hammersmith Hospital, London.
Anaesthesia. 1988 Mar;43(3):229-32. doi: 10.1111/j.1365-2044.1988.tb05549.x.
The accuracy of five commercially available pulse oximeters was compared against arterial blood oxygen saturation, under similar clinical conditions. The oximeters had very similar performance in the clinically useful range of 80-100%, with a tendency slightly to underestimate the true saturation.