[Effect of a single mild infrared A hyperthermia on body temperature, heart rate, blood pressure and blood viscosity in healthy probands and patients with stage I and II arterial hypertension].

Report on mild and single whole body-irradiations with near infrared (IRA). The central body temperature went up to 38.5 degrees C in 9 healthy subjects and 9 patients known as having essential arterial hypertension of the stages I or II. In case of hypertensive patients a single exposure decreased significantly both arterial and venous blood pressure as well as the resulting mean arterial blood pressure. This beneficial effect lasted for at least 24 hours. Besides that, improvement of peripheral hemodynamics and plasma viscosity also was proven. Obviously, improved peripheral hemodynamics is linked to that blood pressure lowering effect which happens due to dilatation of peripheral blood vessels.