Our ability to assess the oxygenation status in critical care with a high degree of accuracy has improved as a result of recent developments in optical technology. The determination of the oxygenation status, however, remains a complex issue due to its multifaceted nature. This review discusses the definitions,...

The possibility of continuously monitoring arterial blood oxygen and carbon dioxide using heated surface electrodes on human skin was discovered in the early 1970s and made commercially available by 1976.  These devices were applied initially to premature infants in an effort to reduce the incidence of blindness due...

Postoperative monitoring in critical care patients has become a widening field over the past few decades. Improvements in outcome can be related to advances in this field as well as in intraoperative management and preoperative assessment.

Measurement of transcutaneous oxygen tension (tcpO₂) has gained worldwide acceptance as a simple and effective method of evaluating cutaneous blood flow in settings where skin viability and the adequacy of skin blood flow are of major concern. An example of such a setting is the non-invasive vascular laboratory at...

This lab study shows that transcutaneous values can closely follow changes in arterial blood gas by using an electrode temperature of 45 °C to monitor exercise with gradual workload.

There are several diagnostic approaches to identify and quantify different types of vascular disease. However, these methods usually do not reflect the condition of the cutaneous circulation.  Because transcutaneous oxygen reveals the status of cutaneous circulation, it has been shown to be a powerful diagnostic tool ...