Cholinergic Blocking Drugs

Question 1

What do cholinergic blocking drugs do?

Answer 1

blocks or inhibts ACh in the parasympathetic nervous system (rest & digest)
(ANTI CHILL)
-also known as anticholinergics

Question 2

What do cholinergic blocking drugs do to the eyes?

Answer 2

dilates pupils (mydriasis)
decreased accommodation caused by paralysis of ciliary muscles (cycloplegia)

Question 3

What do cholinergic blocking drugs do to the GI tract?

Answer 3

relax smooth muscle tone
decreases gastic secretions
decreases motility and peristalsis

Question 4

What do cholinergic blocking drugs do to the urinary system?

Answer 4

increases contraction of internal sphincter which results in urinary retention

Question 5

What do cholinergic blocking drugs do to the respiratory?

Answer 5

decreases bronchial secretions/salivation/sweating
dilates bronchial airways

Question 6

What do cholinergic blockers treat for respiratory diseases?

Answer 6

-exercise induced bronchospasms
-chronic bronchitis
-asthma
-COPD

Question 7

Anticholinergics for GI treatments

Answer 7

-IBS
-GI hypersecretory states

Administer Dicyclomine

Question 8

Contraindications for anticholinergic drugs

Answer 8

-angle closure glaucoma (those w/ increased intraocular pressure)
-acute asthma or other respiratory distress
-myasthenia gravis

Question 9

AE of anticholinergic drugs

Answer 9

-increased HR
-dilated pupils causing blurred vision)
-decreased salivation
-decreased motility causing constipation
-urinary retention

Question 10

What is an antidote for anticholinergic drugs?

Answer 10

physostigmine

Question 11

What meds not to mix anticholinergics with?

Answer 11

antihistamines, do not mix w/ any med that causes pt to be slow, sleepy, drowsy

Question 12

What is atropine used for?

Answer 12

-bradycardia
-is an antidote for anticholinesterase inhibitor toxicity or poisoning

Question 13

What is given for an atropine overdose?

Answer 13

physostigmine

Question 14

Oxybutynin (ditropan) indications

Answer 14

anticholinergic drug
-used for an overactive bladder

Contraindications:
urinary/gastric retention
uncontrolled angle closure glaucoma, increased intraocular pressure

Question 15

Scopolamine indication

Answer 15

anticholinergic
-used to prevent motion sickness
-to prevent postop, postanesthesia N/V, give this med before surgey
-it decreases/drys out secretions

Contraindications:
angle closure glaucoma

Question 16

adverse effects of scopolamine

Answer 16

drowsiness, dry mouth, blurred vision

Question 17

Nursing implications for anticholinergic drugs

Answer 17

-assess for allergies, and presence of BPH, and glaucoma
-tell pt that blurred vision will cause problems w/ driving
-may experience sensitivity to light, instruct to wear sunglasses
-dry mouth may occur chew on candy, frequent mouth care
-older adults may be at higher risk of heat stroke
-limit physical exertion
-encourage increased intake of fluid and salt

Question 18

Teaching for anticholinergic eye drops

Answer 18

-apply pressure to inner canthus to prevent systemic absorption