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NMDRUG2

Discover NMDRUG2: 363 flashcards with questions and answers.

Subject
Society / Medicine
Language of creation
English
363 flashcards No ratings yet 0 views
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Cards in this set

Card 241

Question

MAGNESIUM SULFATE MOA

Answer

Reduces striated muscle contractions and blocks peripheral neuromuscular transmission by reducing acetylcholinesterase release at the myoneural junction; manages seizures in toxemia of pregnancy; induces uterine relaxation; can cause bronchodilation after beta agonists and anticholinergics have been used.

Card 242

Question

MANNITOL 20% MOA

Answer

Promotes the movement of fluid form the intracellular space to the extracellular space. Decreases cerebral edema and intracranial pressure. Promotes urinary excretion of toxins.

Card 243

Question

MEPERIDINE (Demerol) MOA

Answer

Synthetic opioid agonist that acts on opioid receptors to produce analgesia, euphoria, respiratory and physical depression; a schedule II drug with potential for physical dependency and abuse.

Card 244

Question

METOPROLOL (Lopressor) MOA

Answer

Selective inhibitor of beta1-adrenergic receptors; completely blocks beta1 receptors, with little or no effect on beta 2 receptors at doses <100 mg;

Card 245

Question

MIDAZOLAM (Versed) MOA

Answer

Increased production of GABA, an inhibitory neurotransmitter, causing procedural amnesia; anesthesia; skeletal muscle relaxation. Anxiolytic and sedative / hypnotic properties similar to other benzodiazepines.

Card 246

Question

MORPHINE SULFATE MOA

Answer

Alleviates pain through CNS actions Suppresses fear and anxiety centers in brain. Depresses brain stem respiratory centers. Decreases preload and afterload, decreasing myocardial oxygen demand.

Card 247

Question

NALOXONE (Narcan) MOA

Answer

Competitive inhibition at narcotic receptor sites. Reverse respiratory depression secondary to depressant drugs. Completely inhibits the effect of morphine.

Card 248

Question

NITROGLYCERIN MOA

Answer

Smooth muscle relaxant with dilation of arterioles and veins in the periphery, reduces preload and afterload, decreases the workload of the heart and, thereby, myocardial oxygen demand.

Card 249

Question

NITROPASTE MOA

Answer

Smooth muscle relaxant acting on vascular, bronchial, uterine and intestinal smooth muscle. Dilation of arterioles and veins in the periphery reduces preload and afterload, decreases the workload of the heart and, thereby, myocardial oxygen demand.

Card 250

Question

NOREPINEPHRINE (Levophed) MOA

Answer

Potent alpha-agonist resulting in intense peripheral vasoconstriction, positive chronotropic and increased inotropic effect with increased cardiac output. Alpha adrenergic activity resulting in peripheral vasoconstriction and beta-adrenergic activity leading to inotropic stimulation of the heart and coronary artery vasodilation.

Card 251

Question

ONDANSETRON (Zofran) MOA

Answer

Selective 5-HT receptor antagonist, blocking serotonin, both peripherally on vagal nerve terminals and centrally in the CNS chemoreceptor trigger zone

Card 252

Question

OXYGEN MOA

Answer

Reverses hypoxemia.

Card 253

Question

PANCURONIUM (Pavulon) MOA

Answer

Pancuronium produces complete muscular relaxation by binding to the receptor for acetylcholine at the neuromuscular junction, without initiating depolarization of the muscle membrane. As the concentration of acetylcholine rises in the neuromuscular junction, Pancuronium is displaced and muscle tone is regained.

Card 254

Question

PRALIDOXIME CHLORIDE (2-PAM, Protopam) MOA

Answer

Reactivation of cholinesterase to effectively act as an antidote to organophosphate pesticide poisoning. This action allows for destruction of accumulated acetylcholine at the neuromuscular junction.

Card 255

Question

PROCAINAMIDE (Pronestyl) MOA

Answer

Suppresses phase IV depolarization in normal ventricular muscle and Purkinje fibers, reducing automaticity of ectopic pacemakers; suppresses reentry dysrhythmias by slowing intraventricular conduction.

Card 256

Question

PROMETHAZINE (Phenergan) MOA

Answer

H receptor antagonist that blocks the actions of histamines by competitive antagonism at the H receptor. In addition to antihistamine effects, promethazine also possesses sedative, anti-motion, antiemetic, and considerable anticholinergic activity.

Card 257

Question

RACEMIC EPINEPHRINE MOA

Answer

Stimulates alpha-1 receptors reducing subglottic edema in croup by mucosal vascular bed vasoconstriction. Stimulates beta-2 receptors in the smaller airways in lungs causing bronchodilation with relaxation of bronchial smooth muscles. Reduces airway resistance. Useful in treating laryngeal edema; inhibits histamine release.

Card 258

Question

ROCURONIUM (Zemuron) MOA

Answer

Rocuronium produces complete muscular relaxation by binding to the receptor for acetylcholine at the neuromuscular junction, without initiating depolarization of the muscle membrane. As the concentration of acetylcholine rises in the neuromuscular junction, Pancuronium is displaced and muscle tone is regained.

Card 259

Question

SODIUM BICARBONATE 8.4% MOA

Answer

Reacts with hydrogen ions to form water and carbon dioxide

Card 260

Question

SUCCINYLCHOLINE (Anectine) MOA

Answer

Ultra short acting depolarizing skeletal relaxant that mimics acetylcholine as it binds with the cholinergic receptors on the motor end plate, producing a phase I block as manifested by fasciculations.

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