Patients who have sudden dizziness and rapid heartbeat, at this time consider that supraventricular tachycardia or atrial fibrillation may have occurred. It is best to do an electrocardiogram to help clarify whether an arrhythmia is currently occurring and to identify the type of arrhythmia. Some patients may experience sudden dizziness with symptoms of myocardial ischemia, panic attacks, palpitations, and rapid heartbeat when their blood pressure is elevated. If this is due to hypertension, patients are advised to combine this with antihypertensive therapy, such as oral perindopril or nifedipine controlled-release tablets. In addition, beta-blockers, such as bisoprolol or metoprolol, can be taken in combination. Patients are advised to have an ambulatory electrocardiogram to help assess the overall 24-hour average heart rate, as well as ambulatory blood pressure monitoring to clarify whether there are any abnormalities in the current blood pressure and to assess the overall blood pressure control of the patient. The patient’s overall blood pressure control can be assessed, followed by further head CT and transcranial Doppler examinations to rule out the presence of other organic pathologies.