The significance of carotid sinus hypersensitivity in the elderly

The carotid sinus stimulation test was performed under electrocardiographic control in 100 consecutive patients admitted to a psychogeriatric assessment unit. An abnormal cardioinhibitory response was obtained in two patients, and a borderline response in 13 patients. The incidence of carotid sinus hypersensitivity was no higher in those with dementia, coronary artery disease, and arteriosclerosis, nor in the very elderly. The increased frequency in males was significant. It is suggested that age alone is not a predisposing factor. Further studies are needed to determine the importance of a hypersensitive reflex as a clinical entity in the elderly.