Carroll N, Walshaw M J, Evans C C, Hind C R
Department of Medicine, Royal Liverpool Hospital, University of Liverpool, U.K.
Respir Med. 1990 May;84(3):199-201. doi: 10.1016/s0954-6111(08)80034-0.
Nocturnal oxygen desaturation in patients receiving long-term oxygen therapy is described despite adequate daytime oxygenation (PaO2 greater than 8 kPa). Domiciliary oximetry overnight was performed on ten patients receiving long-term oxygen treatment for chronic airflow limitation: six patients were well saturated throughout the night with a fall in SaO2 to below 90% for only 1% of the monitoring time; four showed significant desaturation with a fall in SaO2 to below 90% for periods of 15-47% of the monitoring time.
