17 Questions
What is the primary effect of catecholamines on the nervous system?
Constrict peripheral blood vessels
Which of the following is NOT a common example of catecholamines mentioned in the text?
Albuterol
How do non-catecholamines like phenylephrine mainly affect blood vessels?
Constriction
Which type of drugs are ergoloid mesylates and ergotamine based on their pharmacodynamic action?
Alpha-Adrenergic Blockers
What is the primary pharmacotherapeutic use of metaraminol among non-catecholamines?
Reducing blood pressure
Which receptor activity is primarily activated by norepinephrine among catecholamines?
Alpha activity
What is the main reason why most catecholamines cannot be taken orally?
Causes constriction of surrounding blood vessels
What is the primary reason cholinergic agonists are rarely administered by IM or IV?
They are rapidly destroyed in the body
Which pharmacotherapeutic use is specifically associated with cholinergic agonists?
Reducing eye pressure in glaucoma patients
What is the primary effect of cholinergic agonists on the neurons in target organs?
Increased muscular contraction
Which category of anticholinesterase drugs has long-lasting effects primarily used as toxic insecticides or nerve gas?
Irreversible anticholinesterases
What is the primary pharmacokinetic characteristic of neostigmine among anticholinesterase drugs?
Readily absorbed from mucous membranes
Which pharmacotherapeutic use is associated with cholinergic blocking drugs?
Relaxing the gastrointestinal smooth muscle before endoscopy
Why are belladonna alkaloids primarily absorbed through the gastrointestinal tract?
They have low bioavailability through other routes
'Cholinergic blockers can be used to treat extrapyramidal (Parkinson-like) symptoms caused by drugs' - This statement is associated with which drug mentioned?
Trihexyphenidyl
What effect do cholinergic blocking drugs have on target organs depending on dosage and condition?
Effects are unpredictable
What is the primary reason atropine is given before surgery according to the text?
To reduce oral and gastric secretions
Learn about the nursing responsibilities when administering cholinergic blocking drugs, including advising clients on common side effects and methods to prevent constipation. Explore the use of anticholinergics and the role of cholinergic blocking drugs in healthcare.
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