If a patient had a mastectomy where is the ECG electrodes placed?

In a patient who has undergone a mastectomy, ECG electrodes can be placed on the unaffected side to avoid any discomfort or complications in the surgical area. Typically, the standard placement of electrodes remains the same, but care should be taken to adjust the positions of the precordial leads (V1-V6) to ensure accurate readings while avoiding the surgical site. For example, V3-V6 can be placed more laterally on the chest if the left side is affected by the mastectomy. Always consult with the healthcare team for the best placement strategy based on the patient's specific condition.