The nurse is providing care for an 87-year-old woman who is recovering from a cerebral vascular accident. Which precaution should the nurse take after noting the patient has a positive Romberg test?

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: C

Rationale: The correct answer is C: acetylcholine. Acetylcholine is the primary neurotransmitter responsible for stimulating digestive activity by increasing the secretion of digestive enzymes and promoting smooth muscle contractions. Epinephrine, norepinephrine, and adrenaline are stress hormones that inhibit digestive activity by diverting blood flow away from the digestive system and prioritizing other physiological responses. Therefore, acetylcholine is the most likely signaling molecule to increase digestive activity compared to the other choices.

Correct Answer: C

Rationale: The correct answer is C because an agonist mimics the action of the endogenous neurotransmitter by binding to its receptor. This leads to activation of the receptor and physiological response. Choice A is incorrect as an agonist does not block a receptor. Choice B is incorrect as it describes a reuptake inhibitor, not an agonist. Choice D is incorrect as it refers to a calcium channel blocker, not an agonist. In conclusion, an agonist activates a receptor by binding to it, unlike the other choices which describe different mechanisms of action.

Correct Answer: D

Rationale: Step 1: Identify the disease - Japanese encephalitis is caused by a virus transmitted by mosquitoes. Step 2: Understand the role of a vaccine - a vaccine stimulates the immune system to produce antibodies to fight the virus. Step 3: Vaccines prevent future infections - by administering a vaccine for Japanese encephalitis, individuals can develop immunity and prevent the disease. Step 4: Therefore, the correct answer is D because a vaccine is available to prevent Japanese encephalitis. Summary: A, B, and C are incorrect because there are no vaccines available for eastern equine encephalitis, western equine encephalitis, and West Nile encephalitis, respectively.

Correct Answer: C

Rationale: The correct answer is C: Spinal cord. The spinal cord is responsible for mediating reflexes due to its role in transmitting sensory information to the brain and coordinating motor responses without involving higher brain centers. Reflex actions are quick, involuntary responses to stimuli that help protect the body. The medulla (A) controls vital functions like breathing and heartbeat, the cerebellum (B) coordinates movement and balance, and the cerebral cortex (D) is involved in higher cognitive functions like thinking and decision-making, but not reflex actions.