Drugs acting on ANS Last updated: 2024/04/15 at 6:45 PM Pharmacology Mentor 148 Views Share 0 Min Read SHARE Welcome to Drugs acting on ANS 1. Drug of choice for mushroom poisoning is: Adrenaline Atropine Carbachol Physostigmine None 2. Antidote for nicotine poisoning is: Neostigmine Atropine sulphate Phentolamine Trimethaphan None 3. An 80 kg patient is brought in the causality in shock. Dopamine needs to be started at 10 micro/kg/min rate. A 5 mL vial contains 200 mg of dopamine. Two vials are diluted to a solution of 250 mL with the help of normal saline. Calculate drops per minute required to be administered if 1 mL = 16 drops. 32 8 24 16 None 4. Diagnosis of myasthenia gravis is done by using: Edrophonium Neostigmine Succinylcholine Atropine None 5. Pilocarpine reduce the intraocular pressure in persons with closed angle glaucoma by: Relaxing ciliary muscle Reducing aqueous humor secretion Contracting iris sphincter muscle Increasing aqueous humor outflow None 6. Major neurotransmitter released at end organ effectors of the sympathic division of the autonomic nervous system is: Acetylcholine Noradrenaline Dopamine Adrenaline None 7. The beta blocker having intrinsic sympathomimetic activity is: Propranolol Sotalol Pindolol Atenolol None 8. Acetylcholine is not used commercially because: Rapidly destroyed in the body Costly Crosses blood brain barrier Long duration of action None 9. A child presented with history of ingestion of some unknown plant and developed mydriasis, tachycardia, dry mouth, warm skin and delirium. Which of the following group of drugs is likely to be responsible for the symptoms of this child? Opioid Sympathomimetic Benzodiazepine Anticholinergic None 10. A patient presents to emergency with pinpoint pupil, salivation, lacrimation, tremors and red tears. Plasma cholinesterase level was 30% of normal. Most probable Diagnosis is: Pontine hemorrhage Opioid poisoning Datura/belladonna poisoning Organophosphate poisoning None 11. Drug of choice in treatment of myasthenia gravis is: d-Tubocurarine Hexamethonium Gallamine Neostigmine None 12. Beta blocker having both α and β blocking property is: Nadolol Sotalol Pindolol Carvedilol None 13. Ideal drug employed in the preoperative preparation for surgical excision of pheochromocytoma is: Atenolol Reserpine Clonidine Phenoxybenzamine None 14. All of the following are cardioselective beta blockers EXCEPT: Bisoprolol Esmolol Atenolol Propranolol None 15. Treatment of choice for anaphylactic shock is: Adrenaline 0.5 mL of 1:1000 solution by intramuscular route Atropine 3 mg intravenously Adrenaline 1 mL of 1:10000 by intravenous route Adenosine 12 mg intravenously None 16. Mechanism of action of pralidoxime is: Blockade of ACh receptors Reactivation of AChE enzyme Stimulation of ACh receptors Inhibition of breakdown of ACh None 17. A hypertensive patient has heart rate of 50 beats/min and taking tablet atenolol 200 mg/day in divided doses. After anesthesia, heart rate further fell down to 40 beats/min. What will be the appropriate treatment to improve heart rate: Dobutamine infusion intravenously IV atropine IV adrenaline IV isoprenaline None 18. Cholinomimetics are useful in all of the following conditions EXCEPT: Post operative atony of bladder Myasthenia gravis Glaucoma Partial heart block None 19. Beta blockers are not indicated in: Acute CHF Arrhythmia Hypertension Chronic CHF None 20. Which ONE of the drugs used for atropine toxicity? Naloxone 2-Pralidoxime Physostigmine Flumazenil None 21. Neostigmine is not able to cross blood brain barrier because of its: Primary structure Secondary structrure Quarternary structure Tertiary structure None 22. Which is the shortest acting mydriatic? Atropine Homatropine Tropicamide Cyclopentolate None 23. Beta blockers are indicated for all of the following conditions EXCEPT: Portal hypertension Alcohol withdrawal Hypothyroidism Performance anxiety None 24. Organophosphates act by inhibiting the enzyme acetylcholinesterase. Which type of enzyme inhibitors are they? Competitive and reversible Uncompetitive and reversible Non-competitive and irreversible Competitive and irreversible None 25. The short acting anticholinesterase drug is: Ectothiophate Edrophonium Dyflos Demecarium None 26. Which of the following drugs does not cross blood placental barrier? Physostigmime Hyoscine hydro bromide Glycopyrrolate Atropine None 27. Atropine is useful in organophosphate poisoning because it: Reactivates acetylcholinesterase Binds with both nicotinic and muscarinic acetylcholine receptors Competes with acetylcholine release Is a competitive antagonist of acetylcholine None 28. Which of the following drug is a long acting beta-2 agonist? Orciprenaline Albuterol Pirbuterol Salmeterol None 29. A child on β2 agonists for treatment of bronchial asthma may exhibit all of the following features EXCEPT: Bronchodilation Hypoglycemia Hypokalemia Tremors None 30. Retinoscopy in 5-year-old is best done with: Cyclopentolate Atropine Homatropine Tropicamide None 31. A 24-years-old farm worker is rushed to a nearby emergency department after an accidental exposure to parathion. Which of the following drugs can be given to increase the activity of his acetyl cholinesterase: Pralidoxime Physostigmine Dimercaprol Atropine None 32. Alpha 1a (α1A) adrenergic blocker providing symptomatic relief in BPH is: Doxazosin Tamsulosin Tolazoline Prazosin None 33. Which of the following alpha-blocker drug is used in the treatment of benign hypertrophy of prostate without producing significant hypotension? Phentolamine Dexazosin Terazosin Tamsulosin None 34. Use of tiotropium is contraindicated in: Urinary retention Peptic ulcer disease Hypertension Bronchial asthma None 35. A 35-year-old man was found unconscious. Examination revealed bilateral constricted pupils, bradycardia, excessive sweating and secretion. Most likely cause is: Acute alcohol intoxication Pontine hemorrhage Opium poisoning Organophosphate poisoning None 36. An ultrashort acting β−blocker devoid of partial agonistic or membrane stabilizing action is: Timolol Pindolol Esmolol Atenolol None Time's up Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always seek the advice of a healthcare provider with any questions regarding a medical condition. You Might Also Like PHAL6013 practice quiz -2 PHAL6013 practice questions Local Anesthetics Post Lab Quiz – MDSC2203-2023-24 Quiz on Antihyperlipidemics Quiz on Antihypertensives Sign Up For Daily NewsletterBe keep up! Get the latest breaking news delivered straight to your inbox. 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