What should you instruct the patient to do before taking a 12-Lead ECG?

Instructing the patient to stay still and remain calm before taking a 12-Lead ECG is crucial for obtaining accurate results. Movement can cause artifacts in the ECG tracings, which may lead to misinterpretation of the heart's electrical activity. Additionally, maintaining a calm state can help in reducing the patient's heart rate and anxiety, which can also impact the readings. An ECG measures the heart's electrical impulses, and any movement or increased tension can distort these signals, leading to erroneous data. Therefore, ensuring the patient is calm and still is essential for the precision of the test results.