Pulse oximetry is being used in everyday clinical practice in anaesthesia utilising a peripheral probe. However, it may be unreliable in certain clinical situations such as hypothermia, hypovolemia, vasoconstriction and decreased cardiac output. Similar situations occur... View more
 Mendelson Y, Ochs BD. Noninvasive pulse oximetry utilizing skin reflectance photoplethysmography. IEEE Trans Biomed Eng 1988;35:798-805.
 Kyriacou PA, Moye AR, Gregg A, Choi DMA, Langford RM, Jones DP. A system for investigating oesophageal photoplethysmographic signals in anaesthetized patients. Med Biol Eng Comput 1999;37(5): 639-43.
 Kyriacou PA, Moye AR, Choi DMA, Langford RM, Jones DP. Investigation of the human oesophagus as a new monitoring site for blood oxygen saturation. Physiol Meas 2001;22(1):223-32.
 Kyriacou PA, Powell S, Langford RM, Jones DP. Investigation of oesophageal photoplethysmographic signals and blood oxygen saturation measurements in cardiothoracic surgery patients. Physiol Meas 2002;23(3):533-45.
 Kyriacou PA, Powell S, Langford RM, Jones DP. Esophageal pulse oximetry utilizing reflectance photoplethysmography. IEEE Trans Biomed Eng 2002;49(11):1360-8.