Increased sympathetic activity and blood pressure in young asymptomatic men with 'organic' T-wave aberrations in the electrocardiogram.
1. Twelve asymptomatic young men with 'primary' T-wave aberrations in the electrocardiogram (group T) and 13 matched controls were subjected to a mental stress test, isometric exercise and a cold pressor test. 2. Plasma catecholamines and haemodynamics were studied. 3. Group T had signs of increased sympathetic activity at rest and enhanced sympatho-adrenal reactivity during stress. 4. Systolic blood pressure was consistently elevated in group T. 5. The T-wave aberrations may be explained by the increased sympathetic activity. 6. Several similarities exist between group T and borderline hypertensive subjects.
D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D004562:Electrocardiography; D004837:Epinephrine / Q000097:blood; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D009638:Norepinephrine / Q000097:blood; D013315:Stress, Psychological / Q000503:physiopathology; D013564:Sympathetic Nervous System / Q000502:physiology*
D009638:Norepinephrine; D004837:Epinephrine