What phase of cardiac rehabilitation requires the patient to remain hospitalized?

The phase of cardiac rehabilitation that requires the patient to remain hospitalized is typically Phase I, also known as the acute phase. This phase occurs immediately following a cardiac event, such as a heart attack or surgery, and focuses on monitoring the patient's condition, stabilizing their health, and initiating early mobilization and education about lifestyle changes. The goal is to ensure the patient's safety while they begin to regain strength and understand their treatment plan.