Chapter 45: Drugs Used to Treat the Muscular System

Chapter 45: Drugs Used to Treat the Muscular System

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. A patient who has undergone a lengthy surgical procedure under general anesthesia is unable to breathe on his own following the procedure. Which drug will the nurse expect to be administered as an antidote to the neuromuscular-blocking agent?

ANS:  B

Neostigmine methylsulfate is an antidote to neuromuscular-blocking agents. Additional measures to implement include artificial respirations with oxygen and atropine sulfate for bradycardia and hypotension. Dantrolene is a direct-acting skeletal muscle relaxant given for the treatment of neuroleptic malignant syndrome associated with the use of antipsychotic agents. Ether is a general anesthetic. Baclofen is a skeletal muscle relaxant.

DIF:    Cognitive Level: Application           REF:   pp. 724-725    OBJ:   4 | 5

TOP:   Nursing Process Step: Implementation

MSC:  NCLEX Client Needs Category: Physiological Integrity

2. What is the reason for paraplegic patient to receive baclofen (Lioresal)?

ANS:  A

Baclofen is a gamma aminobutyric acid derivative that interrupts polysynaptic reflexes at the level of the spinal cord. Baclofen does not appear to act directly on the skeletal muscles. Interrupting transmission of impulses from motor nerves to muscles at the skeletal neuromuscular junction is the mechanism of action of neuromuscular-blocking agents. Producing generalized mild weakness of skeletal muscles and decreasing the force of reflex muscle contractions is the mechanism of action of dantrolene.

DIF:    Cognitive Level: Comprehension     REF:   pp. 722-723    OBJ:   2 | 3

TOP:   Nursing Process Step: Implementation

MSC:  NCLEX Client Needs Category: Physiological Integrity

3. A patient taking antipsychotic medication for schizophrenia is admitted with a temperature of 106° F. The admitting diagnosis is neuroleptic malignant syndrome resulting from antipsychotic medication. Which drug is indicated in treatment of this condition?

ANS:  B

Dantrolene, a direct acting skeletal muscle relaxant, is used to treat neuroleptic malignant syndrome associated with the use of antipsychotic agents. Edrophonium is an antidote for neuromuscular-blocking agents. Baclofen is a skeletal muscle relaxant used for the treatment of muscle spasticity resulting from multiple sclerosis (MS) and cerebral palsy. Metaxalone is used for muscle spasms.

DIF:    Cognitive Level: Comprehension     REF:   p. 723             OBJ:   2 | 3

TOP:   Nursing Process Step: Implementation

MSC:  NCLEX Client Needs Category: Physiological Integrity

4. In the intensive care unit, the nurse is taking care of a patient who is on a ventilator and is receiving succinylcholine (Anectine). Which is a priority nursing diagnosis for this patient?

ANS:  A

Pain is the highest priority, according to Maslow’s hierarchy of needs. Succinylcholine, a neuromuscular-blocking agent, is used to paralyze muscles while a patient is on a ventilator. Neuromuscular-blocking agents do not relieve pain. Disturbed body image is not a priority for this situation, although it does apply. Risk for injury and self care deficit are not as great of priorities for this situation.

DIF:    Cognitive Level: Application           REF:   pp. 724-725    OBJ:   1 | 5

TOP:   Nursing Process Step: Diagnosis

MSC:  NCLEX Client Needs Category: Physiological Integrity