Using a new plethysmographic technique to measure peripheral arterial tone (PAT), we report here that REM sleep in humans is associated with considerable peripheral vasoconstriction. The apparatus ...

In response to cold exposure, your blood vessels constrict to prevent heat loss, and this puts added stress on the heart. This process, known as cutaneous vasoconstriction, reduces blood flow to ...

Angiotensin also increases peripheral vascular resistance (afterload) via peripheral vasoconstriction. Activation of the RAAS contributes substantially to negative remodeling of the heart ...

Angiotensin II causes vasoconstriction increasing afterload ... ACE inhibitors are used to treat hypertension, systolic congestive heart failure and as nephroprotection in diabetic nephropathy.