Correct Answer: C

Rationale: The correct answer is C: Dopamine. Parkinson's disease is primarily caused by a deficiency of dopamine in the brain, leading to the characteristic symptoms of bradykinesia, rigidity, and tremors. Dopamine is a neurotransmitter involved in movement control. Acetylcholine (Choice A) is not directly related to Parkinson's disease, although its imbalance can contribute to other movement disorders. Serotonin (Choice B) and Phenylalanine (Choice D) are not primarily involved in the pathophysiology of Parkinson's disease.

Correct Answer: C

Rationale: The correct answer is C: providing for frequent rest periods. This intervention is essential for a client with radiation-induced thrombocytopenia to prevent further platelet depletion and reduce the risk of bleeding episodes. Rest periods help conserve energy and minimize physical exertion, which can trigger bleeding in thrombocytopenic clients. Rationale: 1. Administering aspirin (choice A) is contraindicated in thrombocytopenia as it can further decrease platelet count and increase the risk of bleeding. 2. Inspecting the skin for petechiae (choice B) is important but not as crucial as providing rest periods in managing thrombocytopenia. 3. Placing the client in strict isolation (choice D) is not necessary for radiation-induced thrombocytopenia unless there are other specific infectious concerns. In summary, providing frequent rest periods is the most appropriate intervention to manage radiation-induced thrombocytopenia, promoting patient

Correct Answer: D

Rationale: The correct answer is D: Pain related to sickle cell crisis. In a sickle cell crisis, the client experiences severe pain due to the sickling of red blood cells, which causes blockages in blood vessels. This pain is the hallmark symptom of sickle cell crisis and is a priority nursing diagnosis. The other choices are incorrect because they do not directly relate to the primary issue of sickle cell crisis. Imbalanced nutrition is not typically a priority during a crisis, disturbed sleep pattern is not a common symptom, and impaired skin integrity is not a prominent concern in sickle cell crisis.

Correct Answer: D

Rationale: The correct answer is D: An aminoglycoside. Aminoglycosides, such as gentamicin or amikacin, can interact with cisplatin by increasing the risk of nephrotoxicity and ototoxicity. Both cisplatin and aminoglycosides have the potential to cause kidney damage, and when used together, the risk of kidney toxicity is significantly increased. This interaction is due to the additive effects on the kidneys. Therefore, it is crucial to monitor renal function closely and adjust the dosages of these drugs accordingly to prevent severe adverse effects. Summary: A: Erythromycin - Erythromycin is not known to have significant interactions with cisplatin. B: A cephalosporin - Cephalosporins do not typically interact with cisplatin in a clinically significant manner. C: A tetracycline - Tetracyclines are not known to cause significant interactions with

Correct Answer: C

Rationale: The correct nursing diagnosis is C: Deficient fluid volume. The patient's symptoms indicate dehydration, as evidenced by tachycardia, increased thirst, decreased urine output, and increased body temperature. This points to a lack of fluid in the body. Option A, adult failure to thrive, does not address the immediate issue of fluid volume. Option B, hypothermia, is incorrect as the patient has an increased body temperature. Option D, nausea, is not a primary issue compared to the symptoms indicating dehydration. Therefore, the correct nursing diagnosis is C: Deficient fluid volume.