Final answer:
The correct intervention for a CAD client with a Holter monitor is to keep a diary of activities and symptoms, such as chest pain, to correlate with the heart rhythm data. The Holter monitor should not be removed for daily activities or showers if it is water-resistant, and normal medications should be continued unless advised otherwise.
Step-by-step explanation:
The client with Coronary Artery Disease (CAD) who is prescribed a Holter monitor should follow specific interventions to ensure accurate monitoring. The correct intervention among the options given would be: a. Instruct the client to keep a diary of activity, especially when having chest pain. This is important because a Holter monitor is a device that continuously records the heart's rhythms for 24-48 hours, and maintaining a diary helps correlate the patient's activities and symptoms with any cardiac events that might be detected on the monitor.
Option b is incorrect as the Holter monitor is designed to be worn during all daily activities, including during AM care and while taking a shower, if it is water-resistant. Option c is incorrect as well; patients are usually instructed to continue their normal medication regimen unless advised otherwise by their healthcare provider. Option d seems to be incomplete and therefore cannot be determined as correct or incorrect without additional context.