Description : The following mydriatic does not produce cycloplegia: A. Phenylephrine B. Tropicamide C. Cyclopentolate D. Homatropine
Last Answer : A. Phenylephrine
Description : The most suitable mydriatic for a patient of corneal ulcer is: A. Atropine sulfate B. Homatropine C. Cyclopentolate D. Tropicamide
Last Answer : A. Atropine sulfate
Description : The mydriatic incapable of producing cycloplegia sufficient for refraction testing in children is: A. Atropine B. Hyoscine C. Homatropine D. Cyclopentolate
Last Answer : C. Homatropine
Description : When pupillary dilation-but not cycloplegia-is desired, a good choice is (a) Homatropine (b) Isoproterenol (c) Phenylephrine (d) Pilocarpine (e) Tropicamide
Last Answer : Ans: C
Description : Which of the following mydriatics has the fastest and briefest action: A. Atropine B. Homatropine C. Tropicamide D. Cyclopentolate
Last Answer : C. Tropicamide
Description : The most suitable mydratic for a patient of corneal ulcer is (a) Atropine sulfate (b) Homatropine (c) Cyclopentolate (d) Tropicamide
Last Answer : Ans: A
Description : Which of the following mydriatics has the fastest and briefest action ? (a) Atropine (b) Homatropine (c) Tropicamide (d) Cyclopentolate
Description : Phenylephrine instilled in the eye produces: A. Mydriasis but no cycloplegia B. Cycloplegia but no mydriasis C. Both mydriasis and cycloplegia D. Neither mydriasis nor cycloplegia
Last Answer : A. Mydriasis but no cycloplegia
Description : Which pressor agent acts directly as well as indirectly and produces both vasoconstriction and cardiac stimulation: A. Phenylephrine B. Methoxamine C. Noradrenaline D. Mephentermine
Last Answer : D. Mephentermine
Description : The α2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine
Last Answer : B. Prejunctional, postjunctional as well as extrajunctional in location
Description : The α 2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine
Description : Several children at a summer camp were hospitalized with symptoms thought to be due to ingestion of food containing botulinum toxins. The effects of botulinum toxin are likely to include (a) Bronchospasm (b) Cycloplegia (c) Diarrhea (d) Skeletal muscle spasms (e) Hyperventilation
Last Answer : Ans: B
Description : Actions of pilocarpine include the following except: A. Sweating B. Salivation C. Miosis D. Cycloplegia
Last Answer : D. Cycloplegia
Description : All of the following are true about neurogenic shock except: A. There is a decrease in systemic vascular resistance and an increase in venous capacitance. B. Tachycardia or bradycardia may be ... Severe head injury, spinal cord injury, and high spinal anesthesia may all cause neurogenic shock.
Last Answer : Answer: C DISCUSSION: Neurogenic shock occurs when severe head injury, spinal cord injury, or pharmacologic sympathetic blockade leads to sympathetic denervation and loss of vasomotor tone. ... of treatment. The use of alpha-adrenergic agonist is infrequently necessary to treat neurogenic shock
Description : Phenylephrine (a) Mimics the transmitter at post-synaptic receptors (b) Displaces transmitter from axonal terminal (c) Inhibits synthesis of transmitter (d) None of the above
Description : Which of the following drugs is the drug of choice in anaphylaxis associated with bronchospasm and hypotension ? (a) Cortisone (b) Epinephrine (c) Isoproterenol (d) Norepinephrine (e) Phenylephrine
Description : A 7-years-old boy has a significant bedwetting problem. A long-acting indirect sympathomimetic agent sometimes used by the oral route for this and other indications is (a) Dobutamine (b) Ephedrine (c) Epinephrine (d) Isoproterenol (e) Phenylephrine
Description : Which of the following agents is designated as a safe and effective analgesic, anesthetic and antipruritic by the Food and Drug Administration? (a) Witch hazel (b) Juniper tar (c) Hydrocortisone (d) Phenylephrine
Description : The following are true: a. heroin causes miosis by increasing the release of acetylcholine. b. botulinum toxin causes mydriasis by inhibiting the release of acetylcholine c. ... mydriasis by stimulating the alpha receptors d. amphetamine causes mydriasis by inhibiting noradrenaline reuptake
Last Answer : phenylephrine causes mydriasis by stimulating the alpha receptors
Description : Impaired accommodation occurs with: a phenothiazine b. topical pilocarpine c. topical atropine d. topical phenylephrine
Last Answer : phenothiazine
Description : Dopaminergic D1 and D2 as well as adrenergic α and β1, but not β2 receptors are activated by: A. Dopamine B. Dobutamine C. Methoxamine D. Phenylephrine
Last Answer : A. Dopamine
Description : The following sympathomimetic amine has agonistic action on α1 + α2 + β1 + β3 adrenoceptors, but not on β2 receptors: A. Adrenaline B. Noradrenaline C. Isoprenaline D. Phenylephrine
Last Answer : B. Noradrenaline
Description : Which of the following drugs is administered by intranasal spray/application for systemic action: A. Phenylephrine B. Desmopressin C. Azelastine D. Beclomethasone dipropionate
Last Answer : B. Desmopressin
Description : Dopaminergic D1 and D2 as well as adrenergic α and β 1, but not β 2 receptors are activated by: A. Dopamine B. Dobutamine C. Methoxamine D. Phenylephrine
Description : The following sympathomimetic amine has agonistic action on α 1 + α 2 + β 1 + β 3 adrenoceptors, but not on β 2 receptors: A. Adrenaline B. Noradrenaline C. Isoprenaline D. Phenylephrine
Description : Practically all antineoplastic drugs can produce the following toxic effects except: A. Depression of leucocyte count B. Mucositis C. Cardiomyopathy D. Oligozoospermia
Last Answer : C. Cardiomyopathy
Description : Antiretroviral therapy is not recommended in asymptomatic HIV infected subjects with CD4 cell count more than 350/µl because of the following reason(s): A. All antiretroviral drugs lose efficacy after ... C. The treated subjects may produce and transmit drug resistant virus D. All of the above
Last Answer : D. All of the above
Description : The following is applicable to itraconazole except: A. It has largely replaced ketoconazole for treatment of systemic mycosis B. It does not inhibit human steroid hormone synthesis C. It is ... the treatment of fungal meningitis D. It can interact with terfenadine to produce ventricular arrhythmias
Last Answer : C. It is preferred for the treatment of fungal meningitis
Description : Fluconazole differs from ketoconazole in that: A. It is not active by the oral route B. It is a more potent inhibitor of drug metabolism C. It is not effective in cryptococcal meningitis D. It is unlikely to produce anti-androgenic side effects
Last Answer : D. It is unlikely to produce anti-androgenic side effects
Description : The newer lipid formulations of amphotericin B differ from the conventional formulation in the following respects except: A. They are more efficacious B. They produce milder acute reaction C. They are less nephrotoxic D. They produce milder anaemia
Last Answer : A. They are more efficacious
Description : Gram negative organisms are largely insensitive to benzyl penicillin because: A. They produce large quantities of penicillinase B. They do not utilise D-alanine whose incorporation in the cell wall is inhibited ... multilayer cell wall of gram negative bacteria D. Both A' and B' are correct
Last Answer : . Benzyl penicillin is not able to penetrate deeper into the lipoprotein-peptidoglycan multilayer cell wall of gram negative bacteria
Description : The following is true of sulfonamides except: A. They are more likely to produce crystalluria in alkaline urine in which they are less soluble B. They are primarily metabolized by acetylation ... in the urinary tract D. Used alone, they have become therapeutically unreliable for serious infections
Last Answer : A. They are more likely to produce crystalluria in alkaline urine in which they are less soluble
Description : Methicillin resistant staphylococci do not respond to β-lactam antibiotics because: A. They produce a β-lactamase which destroys methicillin and related drugs B. They elaborate an amidase which destroys ... low affinity for β-lactam antibiotics D. They are less permeable to β-lactam antibiotics
Last Answer : C. They have acquired penicillin binding protein which has low affinity for β-lactam antibioti
Description : Which of the following purgatives undergoes enterohepatic circulation to produce prolonged action: A. Docusates B. Phenolphthalein C. Castor oil D. Mag. sulfate
Last Answer : B. Phenolphthalein
Description : Used as a laxative, liquid paraffin has the following drawbacks except: A. It interferes with absorption of fat soluble vitamins B. It is unpleasant to swallow C. It causes griping D. It can produce foreign body granulomas
Last Answer : C. It causes griping
Description : Which prokinetic drug(s) produce(s) extrapyramidal side effects: A. Metoclopramide B. Cisapride C. Domperidone D. All of the above
Last Answer : A. Metoclopramide
Description : Menadione (vitamin K3) can produce kernicterus in neonates by: A. Inducing haemolysis B. Inhibiting glucuronidation of bilirubin C. Displacing plasma protein bound bilirubin D. Both ‘A’ and ‘B’ are correct
Last Answer : D. Both ‘A’ and ‘B’ are correct
Description : Methyldopa differs from clonidine in the following respect: A. It is less likely to cause rebound hypertension on sudden discontinuation B. It does not reduce plasma renin activity C. It has a central as well as peripheral site of antihypertensive action D. It does not produce central side effect
Last Answer : A. It is less likely to cause rebound hypertension on sudden discontinuation
Description : Choose the most suitable antihypertensive drug for a 45-year-old male company executive who has a travelling job. His blood pressure is 160/100 mm Hg, and he is a diabetic ... → rebound hypertension. Hydrochlorothiazide: May worsen diabetes; more likely to produce weakness, fatigue and impotenc
Last Answer : B. Enalapril
Description : The following antianginal drug is most likely to produce tachycardia as a side effect: A. Amlodipine B. Nifedipine C. Diltiazem D. Verapamil
Last Answer : B. Nifedipine
Description : Use of adenosine for terminating an episode of paroxysmal supraventricular tachycardia has the following advantages except: A. It does not produce any side effect B. It can be given to patients ... 1 min after bolus intravenous injection D. It is effective in patients not responding to verapamil
Last Answer : A. It does not produce any side effect