Centrally Acting Muscle Relaxant UNIT 5 CHPT 21

Question 1

Which of the following drugs is a Centrally Acting Muscle Relaxant?

A. Celecoxib
B. Cyclobenzaprine
C. Aspirin
D. Acetominophen

Answer 1

B. Cyclobenzaprine

Question 2

What is the action of Cyclobenzaprine

Answer 2

Cyclobenzaprine
 Action
 Relieves muscle spasms by acting on the central nervous system

 Uses
 Short-term treatment of muscle spasms (usually less than 3 weeks)

Mechanism of Action: Cyclobenzaprine relieves muscle spasms through a central action, possibly at the brainstem level, with no direct action on the neuromuscular junction or the muscle involved.

Question 3

Is Cyclobenzaprine a CNS depressant

A. No
B. Yes

Answer 3

Side effects/Adverse reactions
 Anticholinergic effects (dry eyes and mouth)
 Drowsiness, dizziness, headache, confusion

Question 4

Does Cyclobenzaprine have anticholinergic effects?

A. No
B. Yes

Answer 4

B. Yes

Question 5

What are the side effects of Cyclobenzaprine

Answer 5

Anticholinergic effects: Blurred vision, constipation, dry mouth, urinary retention, confusion, drowsiness, nausea, nervousness, tachycardia; also, arrhythmias, headache, unpleasant taste

Question 6

What are the adverse effects of Cyclobenzaprine

Answer 6

Allergic reactions, angioedema, myocardial infarction, seizure, ileus

Question 7

Would you give Cyclobenzaprine to a patient with Glaucoma?
A. No
B. Yes

Answer 7

A. No

Question 8

Would you give Lorazepam and Cyclobenzaprine too. patient with anxiety and muscle spasms at the same time?

A. No
B. Yes

Answer 8

A. No

BOTH ARE CNS DEPRSSANTS , YOU DO NOT GIVE 2 CNS DEPRESSANTS TOGETHER

Question 9

Would you give Lorazepam and Cyclobenzaprine too. patient with anxiety and muscle spasms at the same time?

A. No
B. Yes

Answer 9

A. No

Question 10

Contraindications of Cyclobenzaprine

Answer 10

 Contraindications
 Heart disease
 Diabetes
 Glaucoma

 Caution
 Seizure disorders
 CNS depression

Caution: Seizure disorder, alcohol, prostatic hypertrophy, urinary retention, hepatic disease, breastfeeding, driving or operating machinery, morbidity in geriatric patients, sunlight UV exposure

Question 11

Can you take Cyclobenzaprine with food or milk?

a. NO
b. YES

Answer 11

b. YES

Interactions
 Other CNS depressants
 Alcohol
 Antidepressants
 Kava kava
 OK to take with food or milk

Question 12

Cyclobenzaprine Nursing Interventions

Answer 12

Nursing interventions
 Monitor vital signs
 Monitor for CNS side effects
 Provide for safety
 Monitor muscle spasms

Question 13

Patient teaching for Cyclobenzaprine

Answer 13

 Teach
 Do not stop abruptly. Must wean off medication to prevent rebound
spasms
 Avoid alcohol and other CNS depressants -side effects (e.g., dizziness, fatigue, and confusion).
 Not to drive while taking medication
 Drug is used for acute spasms and should not be taken for more than
3 weeks
 Inform HCP if pregnant or nursing

Question 14

How do you know Cyclobenzaprine worked?

Answer 14

Evaluation
 Evaluate patient’s muscular pain for decreased or complete relief of
pain.

Question 15

9. A patient taking cyclobenzaprine might experience which of the following anticholinergic side effects? (Select all that apply.)
   a. Blurred vision
   b. Dry mouth
   c. Salivation
   d. Constipation
   e. Urinary retention

Answer 15

a. Blurred vision
d. Constipation
e. Urinary retention
b. Dry mouth

Question 16

5. The nurse is providing medication instructions to a patient with acute muscle spasms who has been prescribed cyclobenzaprine. Which statement indicates to the nurse that the patient understands the instructions?
   a. I plan to take this medication with a glass of milk.
   b. Cyclobenzaprine should be taken once daily at bedtime.
   c. I will only drink one glass of wine a day before taking.
   d. I will be able to take this drug with grapefruit juice.

Answer 16

a. I plan to take this medication with a glass of milk.

Question 17

3. A patient with multiple sclerosis is having muscle spasticity. The nurse anticipates which drug will be prescribed to treat the patient’s spasticity?
   a. Neostigmine
   b. Ropinirole
   c. Cyclobenzaprine
   d. Pyridostigmine

Answer 17

c. Cyclobenzaprine