Patient preparation for an ECG involves several steps: 1. Explain the Procedure: Nurses should explain the ECG process to the patient to reduce anxiety and ensure cooperation. 2. Position the Patient: The patient should lie down in a comfortable position, usually supine. 3. Skin Preparation: Cleanse the skin where the electrodes will be placed to ensure good contact. 4. Electrode Placement: Place the electrodes on specific locations on the patient's chest, arms, and legs.