Why do you remove jewelry during an ECG?

Removing jewelry during an electrocardiogram (ECG or EKG) is important for several reasons:

1. Artifact Interference: Jewelry, especially metallic objects like necklaces, bracelets, earrings, and rings, can interfere with the accurate recording of electrical signals from the heart. Metals can conduct electrical currents, and when they come into contact with the ECG electrodes, they can create electrical noise or artifacts. These artifacts can distort or obscure the underlying cardiac signals, making it difficult for healthcare providers to interpret the ECG accurately.

2. False Readings: Metallic jewelry can cause false readings or alterations in the ECG tracings. For instance, a necklace or bracelet that touches the ECG electrodes can create a low-frequency signal that mimics a heart rhythm abnormality, potentially leading to misdiagnosis or unnecessary investigations.

3. Electrical Burns: During an ECG, electrical currents are passed through the body to measure heart activity. If jewelry, particularly metallic objects, come into contact with these currents, it can cause electrical burns or skin irritation at the contact points. This is particularly concerning for individuals with sensitive skin or underlying skin conditions.

4. Electrode Placement: Proper placement of ECG electrodes is crucial for obtaining accurate recordings. Jewelry can obstruct or hinder electrode placement, especially on the chest, limbs, or wrists, where the electrodes are typically attached. This can compromise the quality and accuracy of the ECG.

5. Patient Safety: Removing jewelry during an ECG ensures patient safety by minimizing the risk of electrical accidents, skin injuries, and false readings. It allows for a more reliable and accurate assessment of the heart's electrical activity.

Therefore, it is recommended to remove all metallic jewelry, including watches, before undergoing an ECG to ensure the accuracy of the recording and patient safety.