Valsalva Maneuver In Subjects Research Articles

Transient Global Amnesia, Cerebral Veins, and the Need to Find the ‘Smoking Gun’

See related article, p. 2289. > Now Thomas one of the Twelve, was not with the disciples when Jesus came. So the other disciples told him, “We have seen the Lord!” > > But he said to them, “Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe.” John 20:24–29. Several arguments have been proposed to reject a substantial role of alterations in venous drainage of the brain in the genesis of transient global amnesia (TGA). However, these criteria are not routinely applied in other common medical conditions. Studies examining cerebral veins do not demonstrate alterations in patients who have had an episode of TGA. Dislodgment of a clot from the left atrium and subsequent pass of the embolus through various cerebral vessels ending with occlusion of an intracranial artery is widely accepted …

Isometric exercise, cold pressure test, and valsalva maneuver in subjects with essential hypertension and normal blood pressure

Isometric exercise, cold pressure test, and valsalva maneuver in subjects with essential hypertension and normal blood pressure

Baroreflex sensitivity and responses to the Valsalva manoeuvre in subjects with diabetes mellitus.

Baroreflex sensitivity was measured in a group of diabetic patients from the slope of the regression of pulse interval on systolic arterial pressure, during elevation of pressure induced by phenylephrine. The response to Valsalva's manoeuvre was assessed in the same subjects. There was a good correlation between the two tests in the identification of patients with a parasympathetic autonomic disturbance, but measurements of baroreflex sensitivity were more readily quantifiable than were the responses to Valsalva's manoeuvre. Furthermore, baroreflex sensitivity could be measured in patients with sympathetic nervous dysfunction in whom vagal function could not be assessed by means of the Valsalva manoeuvre. Measurement of baroreflex sensitivity is likely to be suitable for longitudinal studies of the progress of diabetic autonomic neuropathy.