Nursing Responsibilities for Cholinergic Blocking Drugs
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Questions and Answers

What is the primary effect of catecholamines on the nervous system?

  • Decrease the heart rate
  • Increase urination
  • Constrict peripheral blood vessels (correct)
  • Relax bronchial muscles
  • Which of the following is NOT a common example of catecholamines mentioned in the text?

  • Dobutamine
  • Albuterol (correct)
  • Isoproterenol hydrochloride
  • Norepinephrine
  • How do non-catecholamines like phenylephrine mainly affect blood vessels?

  • Dilation
  • No effect
  • Increase permeability
  • Constriction (correct)
  • Which type of drugs are ergoloid mesylates and ergotamine based on their pharmacodynamic action?

    <p>Alpha-Adrenergic Blockers</p> Signup and view all the answers

    What is the primary pharmacotherapeutic use of metaraminol among non-catecholamines?

    <p>Reducing blood pressure</p> Signup and view all the answers

    Which receptor activity is primarily activated by norepinephrine among catecholamines?

    <p>Alpha activity</p> Signup and view all the answers

    What is the main reason why most catecholamines cannot be taken orally?

    <p>Causes constriction of surrounding blood vessels</p> Signup and view all the answers

    What is the primary reason cholinergic agonists are rarely administered by IM or IV?

    <p>They are rapidly destroyed in the body</p> Signup and view all the answers

    Which pharmacotherapeutic use is specifically associated with cholinergic agonists?

    <p>Reducing eye pressure in glaucoma patients</p> Signup and view all the answers

    What is the primary effect of cholinergic agonists on the neurons in target organs?

    <p>Increased muscular contraction</p> Signup and view all the answers

    Which category of anticholinesterase drugs has long-lasting effects primarily used as toxic insecticides or nerve gas?

    <p>Irreversible anticholinesterases</p> Signup and view all the answers

    What is the primary pharmacokinetic characteristic of neostigmine among anticholinesterase drugs?

    <p>Readily absorbed from mucous membranes</p> Signup and view all the answers

    Which pharmacotherapeutic use is associated with cholinergic blocking drugs?

    <p>Relaxing the gastrointestinal smooth muscle before endoscopy</p> Signup and view all the answers

    Why are belladonna alkaloids primarily absorbed through the gastrointestinal tract?

    <p>They have low bioavailability through other routes</p> Signup and view all the answers

    'Cholinergic blockers can be used to treat extrapyramidal (Parkinson-like) symptoms caused by drugs' - This statement is associated with which drug mentioned?

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

    What effect do cholinergic blocking drugs have on target organs depending on dosage and condition?

    <p>Effects are unpredictable</p> Signup and view all the answers

    What is the primary reason atropine is given before surgery according to the text?

    <p>To reduce oral and gastric secretions</p> Signup and view all the answers

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