blocker

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blocker

 [blok´er]
something that blocks or obstructs a passage or activity; see also antagonist and blocking agent.
β-blocker (beta-blocker) beta-adrenergic blocking agent.
calcium channel blocker calcium channel blocking agent.
potassium channel blocker potassium channel blocking agent.
sodium channel blocker sodium channel blocking agent.

block·er

(blok'er),
An instrument used to obstruct a passage.

blocker

/block·er/ (blok´er) something that blocks or obstructs passage, activity, etc.
α-blocker  alpha-adrenergic blocking agent; see adrenergic blocking agent.
β-blocker  beta-adrenergic blocking agent; see adrenergic blocking agent.
calcium channel blocker  calcium channel blocking agent.
potassium channel blocker  potassium channel blocking agent.
sodium channel blocker  sodium channel blocking agent.

blocker

blocker

A popular term for anything which physically (e.g., a bed blocker, see there) or pharmacologically (e.g., a beta-blocker) impedes a process or activity.

block·er

(blok'ĕr)
1. An instrument used to obstruct a passage.

blocker

something that blocks or obstructs passage, activity, etc.

α-blocker, alpha-blocker
a drug that induces adrenergic blockade at α-adrenergic receptors.
β-blocker, beta-blocker
a drug that induces adrenergic blockade at either β1- or β2-adrenergic receptors, or both (see also beta-blocker).
calcium channel blocker
a drug that selectively inhibits the influx of calcium ions through a specific ion channel of cardiac muscle and smooth muscle cells (see also calcium channel blocker).
H2-receptor blocker
a drug, such as cimetidine that inhibits the secretion of gastric acid stimulated by histamine, pentagastrin, food and insulin, and also basal secretion; used in the treatment of peptic ulcer.
References in periodicals archive ?
Todd Schell, professor of microbiology and immunology at Penn State College of Medicine, said that because beta blockers are already widely available, the findings could indicate a simple way for physicians to better treat their patients.
TEHRAN (FNA)- Computer scientist Arvind Narayanan, along with his colleagues from Princeton and Stanford have developed a new proof-of-concept ad blocker that spots ads more like a human.
Retale, a location-based mobile platform that helps shoppers save on purchases from retailers and brands, announced the results of a commissioned study examining ad blocker adoption on PCs and mobile devices.
Long-term bed blockers make up 84 % of delayed discharge patients in St James's and St Vincent's, while 75% of bed blockers in Mercy University Hospital Cork have been there for more than four weeks.
Role of diuretics, p blockers, and statins in increasing the risk of diabetes in patients with impaired glucose tolerance: Reanalysis of data from the NAVIGATOR study.
The study looks at pathology, which is important, but we also need information on how treatment with beta blockers affects function and everyday activities.
Once seen as a leading treatment for heart attack patients, beta blockers are losing their luster thanks to new drugs and surgical devices, he says.
When the team compared the nearly 22,000 patients with each other according to who was taking beta blockers after three years, they found little difference in rates of cardiac events or stroke.
There are three main ways defensive linemen can beat a pass block: run around the blocker (primarily the outside rusher); "bull rush," which is a quick explosive charge into the blocker, attempting to catch or put him off balance and driving him back, collapsing the pocket; and a "spin move," which can be risky as the defensive lineman turns his back to the football.
Mechanistically, peripheral effects of beta blockers on the heart and kidneys lead to decreased chronotropy and inotropy as well as lower blood pressure.
So should we be using [beta] blockers perioperatively?
Our secondary hypotheses were that endobronchial blockers would differ in the time taken to position and time to lung deflation from that of double-lumen tubes, but would provide similar surgical access.