Résumé
Decreased cardiac output can present dizziness that is usually described as light-headed sensation of an impending faint. It is often associated with a feeling of unsteadiness or even of falling. Cardiogenic dizziness should always be included as a differential diagnosis especially when examining older patients with dizziness. It is obviously important to identify patients with heart related presyncope or syncope, because many of them have serious underlying cardiac diseases and are at risk for sudden death, if not appropriately treated. Four patients with dizziness were diagnosed at the University Hospital as having dizziness originated from decreased cardiac output. Two had the sick sinus syndrome, one had a complete AV block and one had a congestive heart failure with 2nd degree AV block. After evaluation and cardiac pacemaker implantation, they all became free of dizziness. We present these cases with some review of cardiogenic dizziness.