Ocular Cholinergic Agonists and Antagonists
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which drug is primarily used as an alternative treatment when allergic reactions to atropine occur?

  • Homatropine
  • Physostigmine
  • Scopolamine (correct)
  • Cyclopentolate
  • What is the main clinical use of Homatropine?

  • Treatment of allommodative esotropia
  • IOP reduction
  • Cycloplegic refraction
  • Treatment of iridocyclitis (correct)
  • In terms of potency compared to atropine, how potent is Homatropine?

  • Three times more potent than atropine
  • 2 times more potent than atropine
  • 1/10 as potent as atropine (correct)
  • Equivalent potency to atropine
  • Which drug has a mydriatic and cycloplegic effect that lasts approximately 24 hours?

    <p>Cyclopentolate</p> Signup and view all the answers

    What is the main reason Scopolamine is not a drug of choice?

    <p>Toxicity</p> Signup and view all the answers

    Among the listed drugs, which one is specifically mentioned to be associated with Superficial Punctate Keratitis and Contact Dermatitis as ocular side effects?

    <p>Cyclopentolate</p> Signup and view all the answers

    What is the clinical use of Atropine for the eye?

    <p>Treatment of myopia</p> Signup and view all the answers

    What are the ocular side effects associated with Atropine?

    <p>Contact dermatitis</p> Signup and view all the answers

    What is the lethal dosage of Atropine in children aged 6-12 years old?

    <p>10mg</p> Signup and view all the answers

    What are the initial signs of Atropine toxicity in the body?

    <p>Dryness of mouth and skin</p> Signup and view all the answers

    What is the specific antidote for Atropine toxicity?

    <p>Physostigmine</p> Signup and view all the answers

    What is a systemic side effect of Atropine on the central nervous system?

    <p>Delirium and hallucinations</p> Signup and view all the answers

    Which neurotransmitter is responsible for both pre and post-ganglionic synapse in the efferent oculo-parasympathetic pathway?

    <p>Acetylcholine</p> Signup and view all the answers

    What is the function of M3 receptors in the post-ganglionic effector structures of the oculo-parasympathetic pathway?

    <p>Contraction of the iris</p> Signup and view all the answers

    Which type of medication is pilocarpine classified as in the pharmacological treatment categories?

    <p>Cholinergic agonist</p> Signup and view all the answers

    What autoimmune disorder affects voltage-gated calcium channels on the pre-synaptic membrane of the nerve-muscle neuromuscular junction?

    <p>Lambert-Eaton Myasthenic Syndrome (LEMS)</p> Signup and view all the answers

    Which medication is commonly used as a parasympatholytic and cycloplegic/cyclomydriatic agent?

    <p>Atropine</p> Signup and view all the answers

    What is the primary effect of Lambert-Eaton Myasthenic Syndrome (LEMS) on the neuromuscular junction?

    <p>Prevents acetylcholine release</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser