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 (A)</p> Signup and view all the answers

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

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

Which receptor activity is primarily activated by norepinephrine among catecholamines?

<p>Alpha activity (A)</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 (A)</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 (D)</p> Signup and view all the answers

Which pharmacotherapeutic use is specifically associated with cholinergic agonists?

<p>Reducing eye pressure in glaucoma patients (A)</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 (B)</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 (D)</p> Signup and view all the answers

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

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

Which pharmacotherapeutic use is associated with cholinergic blocking drugs?

<p>Relaxing the gastrointestinal smooth muscle before endoscopy (D)</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 (B)</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 (A)</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 (A)</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 (A)</p> Signup and view all the answers

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