Fall in Pressure in Radial Artery during Reactive Hyperemia

Fall in pressure in radial artery during reactive hyperemia.

Conway Reactive Hyperemia Resistance and Blood Pressure

T HE increased peripheral resistance associated with hypertension has been demonstrated for the circulation as a whole by measurements of blood pressure and cardiac output.l 2 The site of this resistance has not been precisely identified but it is believed to reside in the smallest arteries and arterioles.3'4 Since the activity of the smooth muscle in these vessels is readily affected by humora...

Oxygen consumption in skeletal muscle during reactive hyperemia.

Igo-192. rggg.---The surgical technique of isolation of the blood supply of the gracilis muscle of the dog has been developed for analysis of the oxygen consumption during reactive hyperemia. The time course of the blood flow, A-V oxygen difference and the oxygen consumption follow the same pattern. Immediately after the release of the arterial occlusion, there is an increase in all three value...

Reduction of myocardial reactive hyperemia during oxygen breathing in dogs.

In 7 open-chest anesthetized mongrel dogs the left anterior descending coronary artery was occluded for 20 sec. Myocardial reactive hyperemia was recorded during air and oxygen breathings. The excess blood flow during the reactive hyperemia was smaller and the duration of the reactive hyperemia was shorter during oxygen breathing than during air breathing. It is suggested that the reduction of ...

Blood Pressure Fall During Sleep

The study was designed to investigate the possible role of endogenous opioids in the fall in blood pressure (BP) seen during initial sleep. Seven normal men, ages 20-30 years, were studied for three consecutive nights. Each night, electroencephalogram, chin electromyogram, electrooculogram, heart rate (all continuously), and blood pressure (every 15 minutes) were recorded. Night 1 was used for ...