A nurse is planning to obtain a 12-lead ECG for a client who has a history of cardiac dysrhythmias. Which of the following actions should the nurse plan to take?

A. Attach a blood pressure cuff to the client's upper arm: A blood pressure cuff is not required for obtaining a 12-lead ECG. Its use does not contribute to the quality of the ECG tracing and is unnecessary during this procedure. B. Tell the client to expect a mild stinging sensation during the test: A 12-lead ECG is noninvasive and painless. Electrodes are placed on the skin with adhesive gel or pads, and clients typically feel no stinging. Providing accurate expectations helps reduce anxiety. C. Assist the client to the orthopneic position: The orthopneic position is used to ease breathing in clients with respiratory distress. For a 12-lead ECG, the client should lie supine to ensure proper electrode placement and accurate readings. D. Instruct the client to remain as still as possible during the recording: Movement can create artifacts on the ECG tracing, making interpretation difficult. Remaining still ensures accurate detection of cardiac electrical activity and reliable diagnostic results.