Question

After preparing the ECG machine, you explained the procedure to Mrs. Thomas, connected the electrodes, and began the tracing, as shown in the picture. You rechecked the electrodes and they are all placed correctly. None of the wires are loose. However, you notice that Mrs. Thomas's skin smells fragrant, as though she has used a body lotion recently. Which of the following describes the problem, its possible cause, and the correct solution?

Answer 1

Poor ECG signal quality due to fragrant lotion on Mrs. Thomas's skin can be resolved by cleaning the skin before reattaching the electrodes and conducting another ECG.

Step-by-step explanation:

The problem is likely poor ECG signal quality due to a low electrode-skin impedance, potentially caused by the use of body lotion on Mrs. Thomas's skin. The correct solution is to clean the skin areas where the electrodes will be placed, to remove any lotion that could interfere with the electrical conductivity necessary for an accurate ECG reading.

An electrocardiogram (ECG) is a diagnostic tool that records the electrical impulses of the heart. The presence of lotions or oils on the skin can act as an insulator, reducing the conductivity between the electrodes and the skin. This can lead to weak or disrupted signals. Therefore, the skin must be clean and free of any lotions, oils, or excess hair to ensure good contact between the electrodes and the skin. After cleaning the skin, the electrodes should be firmly reattached and the ECG should be re-administered to check for clear and accurate tracings.

By following these steps, technicians can avoid misreading's that may result in inaccurate diagnoses. Proper electrode placement and skin preparation are essential in capturing the compound electrical signal which provides a detailed picture of heart function through a standard 12-lead ECG setup, as illustrated in Figure 20.32.