Correct Answer: B

Rationale: The correct answer is to apply a new patch every morning. Nitroglycerin patches should be applied in the morning and removed at bedtime to provide a 14-hour nitrate-free interval, preventing tolerance development. Choice A is incorrect because applying a patch every 12 hours may lead to tolerance. Choice C is incorrect because nitroglycerin patches are used prophylactically, not just when symptoms appear. Choice D is incorrect because rotating the application site weekly is not necessary; the same site can be used as long as there is no skin irritation.

Correct Answer: D

Rationale: Performing a bladder scan is the first step to assess bladder retention before any further interventions.

Correct Answer: D

Rationale: Proper documentation of chest tube output is crucial in the care of a patient with a chest tube. While ensuring the chest tube is secured and functioning, checking for air leaks, and maintaining drainage below chest level are important aspects of care, documentation of output is essential for monitoring the patient's condition, assessing the effectiveness of treatment, and ensuring appropriate interventions if needed.

Correct Answer: A

Rationale: Central cyanosis is best assessed by examining the oral mucosa, as it is a more reliable indicator compared to other areas like the conjunctivae, soles of the feet, and ear lobes. The oral mucosa reflects the oxygen saturation levels of the blood more accurately. Conjunctivae and ear lobes may show cyanosis, but they are not as reliable as the oral mucosa. The soles of the feet are not typically used to assess central cyanosis.

Correct Answer: B

Rationale: The correct answer is B: Gastrointestinal distress. When taking Lithium Carbonate, clients may experience gastrointestinal distress as an adverse effect. It is crucial to educate clients about this potential side effect to help them manage it effectively. Choices A, C, and D are incorrect. Increased risk of infection (Choice A) is not a typical adverse effect of Lithium Carbonate. Similarly, increased white blood cell count (Choice C) is not associated with this medication's adverse effects. Nausea and vomiting (Choice D) are general side effects of many medications but are not specifically attributed to Lithium Carbonate.