Certified Hyperbaric Technologist Practice Test

Why should lotion be avoided when preparing a TcOM application site?

1. It causes skin irritation

2. It can clog the electrode

3. It reduces electrode adhesion

4. It alters oxygen permeability

The correct answer is: It reduces electrode adhesion

When preparing a TcOM (Transcutaneous Oxygen Monitoring) application site, avoiding lotions is crucial as they can significantly reduce electrode adhesion. This is important because effective adhesion ensures that the electrode accurately monitors the oxygen levels in the tissues. If the electrode is not securely affixed to the skin, it can lead to inconsistent readings or complete loss of function, thus undermining the reliability of the data collected during the monitoring process. While lotions may pose other issues, such as the potential to cause skin irritation or affect the performance of the electrode, the primary concern in this context is the direct impact on the ability of the electrode to stay in place. This is particularly important in a clinical setting where precise measurements are essential for patient management and treatment decisions. Therefore, ensuring optimal electrode adhesion is foundational to the success of TcOM.