Patients with heart disease who experience dizziness and frequent dizziness accompanied by transient blurred vision, spinning vision, or blackness in front of the eyes must be seen immediately at a hospital. An 18-lead electrocardiogram, myocardial enzymology, and myocardial infarction markers should be investigated if available, and a CT head examination should be performed to determine if the dizziness is caused by a transient lack of cerebral blood supply due to an arrhythmia or significant bradycardia. Patients with heart disease can also experience dizziness due to cerebral ischemia and lack of oxygen. They should be treated closely for the primary cause, such as treating arrhythmias and improving blood supply to the heart, and if there is significant bradycardia, consideration should be given to installing a pacemaker and other causal treatment to relieve dizziness caused by cardiogenic factors leading to cerebral insufficiency.