Carotid artery stenting (CAS) is one of major treatments in prevention of ischemic stroke.
Because of sinus reflex due to stenting and balloon dilatation, persistent post-surgery
hypotension is a common perioperative event. Persistent hypotension can lead to perioperative
adverse events like ischemic stroke, myocardial infraction, renal failure and death; or more
usually, it prolongs length of stay and hospital expenses. Renin-angiotensin-aldosterone
inhibitor (RASI) could inhibit the release of catecholamine and may lead to higher rate of
persistent hypotension after CAS compared to other hypertensives.Thus, the investigators aim
to investigate the effect of pre-operation antihypertensive drugs on persistent hypotension
after stenting, and followed burden in carotid artery stenting comorbid with hypertension
patients.