Blood pressure biofeedback treatment, organ damage and sympathetic activity in mild hypertension

This small clinical trial compared the efficacy of biofeedback in mildly hypertensive patients with and without damage to the heart, brain, retina or kidney. Mean blood pressures were significantly reduced in both groups; the decrease was still significant in the group without organ damage (11 patients) after three months but was not found in the organ damaged group (11 patients) one and three months post treatment.