Module 4: Pharmacology Flashcards
- Mechanism of action of local anesthetics.
A. Block sodium channel thereby stopping axonal conduction
B. Block alpha and beta receptor
C. Block neuronal firing by decreasing Ach in the neuromuscular junction
D. Inhibition of acetyl cholinesterase enzyme
E. Inhibition of enzyme responsible for pain response
A. Block sodium channel thereby stopping axonal conduction
- The following are factors that affect the absorption of drug from the gastrointestinal(GI) track except.
A. Surface area of absorption
B. Blood flow to the site of absorption
C. Physical state of the drug
D. Concentration of the drug at the site of absorption
E. Protein binding
E. Protein binding
- Continued stimulation of cells with agonists generally results in which of the following?
A. Desensitization
B. UP-regulation
C. Down-regulation
D. A and B
E. A and C
E. A and C
- Drug that lacks intrinsic efficacy but retains affinity and competes with the agonist for the binding sites of the receptor.
A. Competitive antagonist
B. Full agonist
C. Non-competitive antagonist
D. Partial antagonist
E. Partial agonist
A. Competitive antagonist
- This type of drug produce its effect by binding a site on the receptor distinct from that of the primary agonist and thereby changing the affinity of the receptor for the agonist.
A. Competitive antagonist
B. Full agonist
C. Non-competitive antagonist
D. Partial antagonist
E. Partial agonist
C. Non-competitive antagonist
- In this type of study, participants are blinded to treatment assignment, investigator are not.
A. Double blind study
B. Single blind study
C. Masking
D. Open-label
E. Un-blinded study
B. Single blind study
- The neurotransmitter of all preganglionic autonomic fibers, and all postganglionic parasympathetic fibers.
A. Norepinephrine
B. Noradrenaline
C. Acetylcholine
D. A and B
E. A and C
C. Acetylcholine
- The release of ach and other neurotransmitters by exocytosis is inhibited by:
A. Acetylcholinesterase
B. Botulinum toxin
C. Reserpine
D. Me tyrosine
E. Guanethidine
B. Botulinum toxin
- All of the following are enzymes involved in the biosynthesis of epinephrine from tyrosine EXCEPT:
A. Tyrosine hydroxylase
B. Aromatic L amino acid decarboxylase
C. Dopamine Beta-hydroxylase
D. Phenyl ethanolamine-N-Methyl transferase
E. Monoamine oxidase
E. Monoamine oxidase
- Rate limiting enzyme in the synthesis of catecholamines
A. Tyrosine hydroxylase
B. Aromatic L-amino acid decarboxylase
C. Dopamine beta-hydroxylase
D. Phenyl ethanolamine-N-Methyl transferase
E. COMT
A. Tyrosine hydroxylase
- All of the following are effects of activating beta 2 receptor EXCEPT:
A. Bronchoconstriction
B. Uterine Relaxation
C. Glycogenolysis
D. Gluconeogenesis
E. Bronchodilation
A. Bronchoconstriction
- All of the following are effects of activating alpha 1 receptor EXCEPT:
A. Vascular smooth muscle relaxation
B. Intestinal smooth muscle relaxation
C. Increase contractive force of the heart
D. Glycogenolysis in the liver
E. Vascular smooth muscle constriction
A. Vascular smooth muscle relaxation
- Which of the following is a pharmacological effect of muscarinic stimulation in the cardiovascular system?
A. Vasoconstriction
B. Decrease in cardiac rate
C. Positive chronotropic effect
D. Positive dromotropic effect
E. Positive inotropic effect
B. Decrease in cardiac rate
- All of the following are naturally occurring chromonematic Alkaid EXCEPT:
A. Pilocarpine
B. Muscarine
C. Acetylcholine
D. Arecoline
E. None of these
C. Acetylcholine
- Which of the following is/are effects of cholinomimetic drugs?
I. Stimulation of GI smooth muscle
II. Stimulation of secretion of exocrine gland
III. Bronchoconstriction
IV. Tachycardia
A. I and II
B. II and III
C. I, II and III
D. I and IV
E. I, II, III and IV
C. I, II and III
- Major contraindication to the use of muscarinic agonist are the following EXCETP:
A. Asthma
B. Hypothyroidism
C. Coronary insufficiency
D. Acid-peptic disease
E. Hypertension
E. Hypertension
- Used in the treatment of glaucoma where it is instilled into the eye usually as a 0.5-4% solution.
A. Epinephrine
B. Eye-mo
C. Pilocarpine
D. Bethanecole
E. Atropine
C. Pilocarpine
- Most effective prophylactic agent for short (4-6 hrs) exposure to severe motion also available as transdermal patch.
A. Atropine
B. Scopolamine
C. Ipratropium
D. Tiotropium
E. Varenicline
B. Scopolamine
- Which of the following drugs is/are classified an acetylcholinesterase inhibitor?
I. Pilocarpine
II. Edrophonium
III. Tacrine
IV. Atropine
A. I only
B. I and II
C. II and III
D. I, II and III
E. IV only
C. II and III
- Which of the following is not an effect of anti-cholinesterase agents?
A. Stimulation of muscarinic receptor responses at autonomic effector organs
B. Stimulation followed by depression or paralysis of all autonomic ganglia and skeletal muscle
C. Stimulation with occasional subsequent depression of cholinergic receptor sites in the CNS
D. All of these
E. None of these
E. None of these
- Intoxication with an organophosphorus anti-cholinesterase agent can be treated with:
A. Atropine
B. Pralidoxime
C. Malathion
D. A and B
E. B and C
D. A and B
- This agent is used in the diagnosis of myasthenia gravis.
A. Edrophonium
B. Atropine
C. Neostigmine
D. Pralidoxime
E. Acetylcholine
A. Edrophonium
- All are standard anti-cholinesterase drugs used in the symptomatic treatment of myasthenia gravis EXCPT:
A. Pyridostigmine
B. Neostigmine
C. Atropine
D. Ambenonium
E. Edrophonium
C. Atropine
- Mechanism of action of indirect acting sympathomimetics drugs:
A. Agents act directly on one or more of the adrenergic receptors thereby producing an effect
B. Increase the availability of norepinephrine (NE) or epinephrine (Epi) to stimulate adrenergic receptors
C. Releasing or displacing NE from sympathetic nerve varicosities
D. A and B
E. B and C
E. B and C
- Metabolic precursor of NE and EPI and is also a neutransmitter particularly important in the regulation movement.
A. Dopamine
B. Serotonin
C. Oxytocin
D. Norepinephrine
E. Noradrenaline
A. Dopamine
- These drugs play a major role only in the treatment of bronchoconstriction in patients with asthma (reversible airway obstruction) or chorionic obstructive pulmonary disease(COPD)’
A. Beta 1 adrenergic agonist
B. Beta 2 adrenergic agonist
C. Beta 1 adrenergic antagonist
D. Beta 2 adrenergic antagonist
E. Non-selective beta agonist
B. Beta 2 adrenergic agonist
- Potent non-selective beta receptor agonist with very low affinity for alpha receptors
A. Ipratropium
B. Terbutaline
C. Isoproterenol
D. Prazosin
E. Phenylephrine
C. Isoproterenol
- This sympathomimetic drug is indicated for the short term treatment of cardiac decomperisation post cardiac surgery or in patients with congestive heart failure or acute myocardial infraction.
A. Dobutamine
B. Isoproterenol
C. Metaproterenol
D. Albuterol
E. Isoetharine
A. Dobutamine
- Selective beta 2 agonist originally developed as a uterine relaxant.
A. Terbutaline
B. Ritodrine
C. Oxytocin
D. Prazosin
E. Salmeterol
B. Ritodrine
- Life-threatening condition characterized by inadequate perfusion of tissues, hypotension and ultimately failure of organ systems.
A. Coma
B. Shock
C. Arrhythmia
D. Heart Failure
E. Kidney Failure
B. Shock
- Structurally related to amphetamine, this drug is a mild CNS stimulant with more prominent effects on mental than on motor activities. This drug is also effective in the treatment of narcolepsy and ADHD.
A. Methamphetamine
B. Ephedrine
C. Clonidine
D. Methylphenidate
E. Phenobarbital
D. Methylphenidate
- Classified as alpha 2 selective antagonist.
A. Phenoxybenzamine
B. Prazosin
C. Yohimbine
D. Nadolol
E. Metoprolol
C. Yohimbine
- Classified as beta 1 selective antagonist.
A. Phenoxybenzamine
B. Prazosin
C. Yohimbine
D. Nadolol
E. Metoprolol
E. Metoprolol
- Used in the treatment of pheochromocytoma tumor of the adrenal medulla and sympathetic neurons that secretes enormous quantities of catecholamines.
A. Phenoxybenzamine
B. Epinephrine
C. Metoprolol
D. Dopamine
E. Isoxuprine
A. Phenoxybenzamine
- Which of the following is NOT correct?
A. Alpha agonist cause miosis
B. Alpha agonist cause vasoconstriction
C. Beta antagonist decrease the formation of aqueous humor
D. Beta 2 agonist cause bronchodilation
E. Beta 3 agonist cause lipolysis
A. Alpha agonist cause miosis
- Beta 2 receptor stimulation includes all of the following effects EXCEPT:
A. Stimulation of renin secretion
B. Fall of potassium concentration is plasma
C. Relaxation of bladder uterus
D. Uterine muscle contraction
E. Skeletal muscle relaxation
E. Skeletal muscle relaxation
- Which of the following effects is associated with beta 3-receptor stimulation?
A. Lipolysis
B. Decrease in platelet aggregation
C. Bronchodilation
D. Tachycardia
E. Pilomotor smooth muscle contraction
A. Lipolysis
- Which of the following hypnotic drug is benzodiazepine derivative?
A. Zolpidem
B. Flurazepam
C. Secobarbital
D. Ramelteon
E. Buspirone
B. Flurazepam
- Which of the following hypnotic drug increase the activity of hepatic drug-metabolizing enzyme systems?
A. Phenobarbital
B. Zolpidem
C. Flurazepam
D. Secobarbital
E. Ramelteon
A. Phenobarbital
- Which of the following is the mechanism of Barbiturates action?
A. Increasing the duration of the GABA-gated Cl-channel openings
B. Directly activating the chloride channel
C. Increasing the frequency of Cl-channel openings events.
D. Antagonist at benzodiazepine bindings sites on the GABA receptor
E. Partial agonist at 5-HT receptor but also affinity for D2 receptor.
A. Increasing the duration of the GABA-gated Cl-channel openings
- The usual cause of adverse effect/death due to overdose of hypnoticis due to:
A. Depression of the CNS
B. Heart attack
C. Hypothemia
D. Cerebral edema
E. Status epilepticus
A. Depression of the CNS
- Which of the following antiseizure drugs produces a voltage-dependent inactivation of sodium channels?
I. Phenytoin
II. Carbamazepine
III. Vigabatrin
IV. Gabapentin
A. I only
B. I and II
C. II and IV
D. IV only
B. I and II
- Mechanism of action of Phenytoin?
A. Block high-frequency firing of neurons through action on voltage-gated Na channel
B. It binds to an allosteric regulatory site on the GABA-BZ receptor and prolongs the opening of the Cl-channel
C. It effects on the Ca currents, reducing the low-threshold (T-type) current
D. It inhibits GABA-transaminase, which catalyzes the breakdown of GABA
E. Decreases the excitatory transmission by acting on the VG Ca channels presynaptically
A. Block high-frequency firing of neurons through action on voltage-gated Na channel
- The pathophysiologic basis for antiparkinsonism therapy is:
A. The loss of dopaminergic neurons
B. The loss of some cholinergic neurons
C. The loss of the GABAergic cells
D. The loss of glutaminergic neurons
E. Abnormal firing of neurons from the CNS
A. The loss of dopaminergic neurons
- Which of the following drugs is used in the treatment of parkinsonian disorders?
A. Phenytoin
B. Selegeline
C. Haloperidol
D. Fluoxetine
E. Aspirin
B. Selegeline
- The mechanism of action of carbidopa is:
A. Stimulating the synthesis release, Or reuptake of dopamine
B. Inhibition of DOPA decarboxylase enzyme
C. Stimulating dopamine receptors
D. Inhibition of COMT
E. Monoamine oxidase inhibitor
B. Inhibition of DOPA decarboxylase enzyme
- Which of the following statements is correct?
A. MAO-A metabolizes dopamine MAO-B metabolizes serotonin
B. MAO-A metabolizes norepinephrine and dopamine, MAO-B metabolizes serotonin
C. MAO-A metabolizes norepinephrine and serotonin, MAO-B metabolizes dopamine
D. MAO-A metabolizes dopamine, MAO-B metabolizes norepinephrine and serotonin
E. MAO-A metabolizes metabolizes dopamine, MAO-B metabolizes epinephrine
C. MAO-A metabolizes norepinephrine and serotonin, MAO-B metabolizes dopamine
- A catechol O-methyl transferase inhibitor, which prolongs the action of levodopa by diminishing its peripheral metabolism:
A. Carbidopa
B. Clozapine
C. Tolcapone
D. Rasagiline
E. Selegiline
C. Tolcapone
- Mu receptors are associated with:
A. Supraspinal and spinal analgesia sedation respiratory depression and slowed GI transit
B. Spinal analgesia, mydriasis sedation physical dependence
C. Dysphoria, hallucinations, respiratory and vasomotor stimulation
D. Analgesia, euphoria, respiratory stimulation, physical dependence
E. CNS stimulation and respiratory stimulation
A. Supraspinal and spinal analgesia sedation respiratory depression and slowed GI transit
- Which of the following opioid analgesics is a strong mu receptor agonist?
A. Morphine
B. Pentazocine
C. Buprenorphine
D. Naloxone
E. Propoxyphene
A. Morphine
- Which of the following agents is a full antagonist of opioid receptors?
A. Meperidine
B. Buprenorphine
C. Naloxone
D. Butorphanol
E. Morphine
C. Naloxone
- The diagnostic triad of opioid overdosage is:
A. Mydriasis, coma and hyperventilation
B. Coma, depressed respiration and miosis
C. Mydriasis, chills and abdominal crampd
D. Miosis, tremor and vomiting
E. Mydriasis, diarrhea, increase urination
B. Coma, depressed respiration and miosis
- Which of the following non-narcotic agents is salicylic acid derivative?
A. Phenylbutazone
B. Ketamine
C. Aspirin
D. Tramadol
E. Diclofenac
C. Aspirin
- Correct statements concerning aspirin include all of the following except:
A. Irreversibly inhibits platelet COX
B. Main adverse effects at antithrombotic doses are gastric upset (intolerance) and gastric and duodenal ulcers
C. It inhibits platelet aggregation
D. Safe to use in patients with hemophilia
E. Epidemiologic studies suggest that long term use of aspirin at low dosage is associated with a lower incidence of colon cancer
D. Safe to use in patients with hemophilia
- A drug that inhibit HMG-CoA reductase, it also reduces cholesterol synthesis and up regulate low density lipoprotein (LDL) receptors on hepatocytes
A. Fenofibrates
B. Colestipol
C. Ezetimibe
D. Atorvastatin
E. Niacin
D. Atorvastatin
- A vasodilator that also inhibits plates function by inhibiting adenosine uptake and cGMP phosphodiesterase activity.
A. Dypiridamine
B. Abciximab
C. Clostazol
D. Anistreplase
E. Streptokinase
A. Dypiridamine
- The mathematical product of peripheral vascular resistance(PVR) and cardiac output(CO).
A. Hypertension
B. Blood Pressure
C. Hypotension
D. Vascular pressure
E. Afterload
B. Blood Pressure
- Recommendation on dietary approaches to stop hypertension (DASH).
A. High intake of fruits
B. Low fats dairy products along with reduced content of dietary cholesterol saturated fat and total fat
C. The diet is rich on potassium and calcium and low in sodium
D. High intake of vegetables
E. All of these
E. All of these
- Recommend Blood Pressure targets for patient with heart failure
A. <150 / <90
B. <140 / <90
C. <140 / <80
D. <160 / <90
E. <130 / <80
E. <130 / <80
- Increase the excretion of Na, CI and H20 by inhibiting Na/Cr ion exchange in the early part of the distal tubule:
A. Thiazide diuretics
B. Loop diuretic
C. Potassium Sparring diuretics
D. Aldosterone Antagonists
E. Osmotic diuretics
A. Thiazide diuretics
- Drug that antagonize angiotensin II at the AT1 receptor subtype, which decrease systemic vascular resistance.
A. Furosemide
B. Amiloride
C. Metoprolol
D. Captopril
E. Losartan
E. Losartan
- Reduce both resting and exercise heart rate, cardiac output and both systolic and diastolic blood pressure
A. Furosemide
B. Amiloride
C. Metoprolol
D. Captopril
E. Losartan
C. Metoprolol
- Block the conversion of angiotensin I to angiotensin II by interfering with angiotensin converting enzyme (ACE) activity
A. Furosemide
B. Amiloride
C. Metoprolol
D. Captopril
E. Losartan
D. Captopril
- A condition of chronic excess total body iron caused either by an inherited abnormality of iron, Absorption or by frequent transfusion to treat certain types of hemolytic disorders.
A. Hemochromatosis
B. Megaloblastic anemia
C. Microcytic anemia
D. Neutropenia
E. Pernicious anemia
A. Hemochromatosis
- A Deficiency in serum hemoglobin and erythrocytes in which the erythrocytes are abnormally large results from either folate or vitamin B deficiency
A. Hemochromatosis
B. Megaloblastic anemia
C. Microcytic anemia
D. Neutropenia
E. Pernicious anemia
B. Megaloblastic anemia
- A deficiency in serum hemoglobin and erythrocytes in which the erythrocytes are abnormally small often caused by iron deficiency
A. Hemochromatosis
B. Megaloblastic anemia
C. Microcytic anemia
D. Neutropenia
E. Pernicious anemia
C. Microcytic anemia
- An abnormally low number of neutrophils in the blood patients with this condition are susceptible to serious infection
A. Hemochromatosis
B. Megaloblastic anemia
C. Microcytic anemia
D. Neutropenia
E. Pernicious anemia
D. Neutropenia
- A form of megaloblastic anemia resulting from deficiency of intrinsic factor, a protein produced by gastric mucosal cell and required for intestinal absorption of vitamin B
A. Hemochromatosis
B. Megaloblastic anemia
C. Microcytic anemia
D. Neutropenia
E. Pernicious anemia
E. Pernicious anemia
- Required for biosynthesis of heme and heme-containing proteins, including hemoglobin and myoglobin
A. Deferoxamine
B. Vitamin B12
C. Folic Acid
D. Ferrous sulfate
E. Filgrastim
D. Ferrous sulfate
- Stimulates G-CSF receptors expressed on mature neutrophils and their progenitors for the treatment of neutropenia
A. Deferoxamine
B. Vitamin B12
C. Folic acid
D. Ferrous sulfate’
E. Filgrastim
E. Filgrastim
- An endogenous anticlotting protein that irreversibly inactivates thrombin and factor Xa. Its enzymatic action is markedly accelerated by the heparins
A. Antithrombin III
B. Glycoprotein IIb/IIIa
C. Clotting cascade
D. Prothrombin
E. A and B
A. Antithrombin III
- A protein complex on the surface of platelets. When activated it aggregates platelets primarily by binding to fibrin.
A. Antithrombin III
B. Glycoprotein IIb/IIIa
C. Clotting cascade
D. Prothrombin
E. A and C
B. Glycoprotein IIb/IIIa (?)
- Laboratory test used to monitor the anticoagulant effect of unfractionated heparin and direct thrombin inhibitors: prolonged when drug effect is adequate
A. Activated partial thromboplastin time (apt) test
B. Clotting cascade
C. Prothrombin time (PT) test
D. Platelets test
E. Coagulase test
A. Activated partial thromboplastin time (apt) test (?)
- Laboratory test used to monitor the anticoagulant effect of warfarin, prolonged when drug effect is adequate
A. Activated partial thromboplastin time (apt) test
B. Clotting cascade
C. Prothrombin time (PT) test
D. Platelet test
E. Coagulase test
C. Prothrombin time (PT) test
- Which of the following are classified as thrombolytic agents?
i. Streptokinase
ii. Warfarin
iii. T-PA derivatives
iv. Heparins
A. I and II
B. II and III
C. I and III
D. II and IV
E. IV only
C. I and III (?)
- What is the bactericidal concentration of ethanol and isopropanol by volume in water?
A. 60 – 90%
B. 30 – 50%
C. 70 – 99%
D. 80 – 100%
E. 10 – 20%
A. 60 – 90% (?)
- It is a destruction of marked reduction in number of activity of microorganisms.
A. Antisepsis
B. Decontamination
C. Disinfection
D. Sterilization
E. Pasteurization
B. Decontamination (?)
- It contains 2% Iodine and 2.4% NaI in alcohol and is the most active antiseptic for intact skin
A. Iodophors
B. Povidone iodine
C. Tincture of Iodine USP
D. Iodine solution
E. Both A and B
C. Tincture of Iodine USP (?)
- A phenolic disinfectant that cause cerebral edema and convulsions in premature infants.
A. O-phenyl phenol
B. P-Amylphenol
C. O-benzyl-P-Chlorophenol
D. Heptachlorophene
E. Hexachlorophene
E. Hexachlorophene (?)
- The following has an excellent efficacy on infection caused by pneumocystis jiroveci pneumonia except:
A. Penicillin
B. Dapsone
C. Atrovaquone
D. Trimetoprim-sulfamethoxazole
E. None of these
B. Dapsone (?)
- First line drug in treating early stage of infection caused by west African trypanosomiasis
A. Pentamidine
B. Melarsoprol
C. Metronidazole
D. Iodoquinol
E. Tetracycline
A. Pentamidine (?)
- It inhibits topoisomerase II and has a side effect of alopecia and myelosuppression
A. Irinotecan
B. Etoposide
C. Paclitaxel
D. Vinblastine
E. Vincristine
B. Etoposide (?)
- The FDA approved a novel, oral and highly selective small molecule inhibitor of BRAFV600E last August 2011 and has a highly promising activity in metastatic melanoma. What drug is this?
A. Lomustine
B. Camustine
C. Cyclophosphamide
D. Vemurafenib
E. Etoposide
D. Vemurafenib (?)
- It is an immunosuppressant macrolide antibiotic produced by Steptomyces tsukabaensis
A. Cyclosporine
B. Tacrolimus
C. Temsirolimus
D. Cycloserine
E. Sirolimus
B. Tacrolimus (?)