Patients with pacemakers can indeed experience a heart attack. A heart attack is typically a condition related to the circulatory system, often caused by blockages in the coronary arteries. A pacemaker, on the other hand, is a separate medical device that regulates the heart's rhythm and is not directly involved with the circulatory system's blood vessels. Meanwhile, devices known as ICDs (Implantable Cardioverter-Defibrillators) can play a life-saving role by automatically delivering a shock in cases of sudden and dangerous rhythm disturbances.