Transcutaneous oximetry (transcutaneous oxygen tension monitoring)
Measuring transcutaneous oxygen tension (TcpO2) is a method that allows you to assess skin oxygenation and blood microcirculation in the extremities. The percutaneous approach allows us to determine the condition of peripheral vessels and diagnose vascular disorders, including diabetic foot syndrome.
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Indications for using the method
The transcutaneous oxygen tension (TcpO2) method allows you to assess the level of O2 saturation in the skin. This indicator is an indicator of the condition of peripheral vessels.
This method is also used to determine the need for amputation. This is relevant for critical ischemic syndrome.
Transcutaneous monitoring is also carried out for the purpose of:
- Predicting wound healing The study of oxygen tension is actively used to determine the healing potential of trophic ulcers and extensive wounds in conditions of impaired blood supply.
- Estimates of the effectiveness of vasodilators Transcutaneous oximetry helps evaluate how effectively medications dilate blood vessels and improve blood flow.
General information about the procedure
Research methodology
The measurement of transcutaneous oxygen is based on the ability of O2 molecules to penetrate the skin. The device used records the oxygen concentration directly under the skin. This correlates with the level of its saturation in the arteries. The value of transcutaneous O2 pressure directly depends on the volume of arterial blood flow.
In the process of studying pressure, a sensor is fixed to a fat-free area of the patient's skin, which is preheated to a certain temperature. Heating the sensor increases local blood flow and facilitates the diffusion of O2 through the epidermis. Next, data on oxygen concentration is recorded. They are displayed in the form of a graph on the device monitor.
Advantages and disadvantages of the method
According to doctors, this method is valuable. Its main advantage is its non-invasiveness. This method is safe, including for those who suffer from chronic diseases.
The main disadvantage of the method is its sensitivity to conditions. The accuracy of measurements is sometimes compromised by environmental factors. Another disadvantage is data limitations. Their data quality may vary depending on the individual characteristics of the patient's body. In particular, oxygen transport is affected by the presence of glycated hemoglobin.
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Name and essence of the method
Transcutaneous oxygen tension (transcutaneous or transdermal oximetry) is a non-invasive method. It allows you to assess how well the tissues of the foot are saturated with oxygen.
Transcutaneous monitoring is widely used in various medical fields, including purulent, vascular, and plastic surgery. In anesthesiology and resuscitation, it is relevant for patients who require constant monitoring of oxygen and carbon dioxide.