Correct Answer: A

Rationale: The correct technique to determine the presence of crepitus during a physical examination is palpation. Crepitus is a crackling or grating sensation that is felt when there is air trapped in the subcutaneous tissue. Palpation involves using the hands to feel for abnormalities such as crepitus. Percussion involves tapping on the body to produce sounds that can help assess underlying structures, not to determine the presence of crepitus. Auscultation is listening to sounds within the body using a stethoscope, which is not relevant for detecting crepitus.

Correct Answer: B

Rationale: The correct answer is B: Edema and proteinuria. In CKD, the kidneys are unable to filter waste products effectively, leading to fluid retention (edema) and protein leaking into the urine (proteinuria). Edema occurs due to fluid buildup from decreased kidney function. Proteinuria is a result of damaged glomeruli in the kidneys, allowing proteins to leak into the urine. Weight loss and polyphagia (excessive hunger) are not typical symptoms of CKD. Hypertension and tachycardia can occur in CKD due to fluid overload and electrolyte imbalances. Hypothermia and bradycardia are not common symptoms of CKD and would be more indicative of other conditions.

Correct Answer: D

Rationale: The correct answer is D: Lupus. Lupus can affect the kidneys, leading to renal impairment. Renal impairment can decrease the body's ability to excrete ammonia, resulting in elevated levels. Renal failure (choice A) can also lead to elevated ammonia levels, but lupus specifically contributes to renal issues. Cirrhosis (choice B) primarily affects the liver, not kidneys. Psoriasis (choice C) is a skin condition and does not directly impact ammonia levels.

Correct Answer: C

Rationale: The correct answer is C: Complete health history. In a comprehensive assessment, obtaining a complete health history is essential to gather information about the patient's past and present health conditions, including medical history, family history, social history, and current symptoms. This information helps the healthcare provider understand the patient's overall health status, identify risk factors, and develop an appropriate treatment plan. Assessing the circulatory system (A) and airway (B) are important components of a physical assessment, but they alone do not constitute a comprehensive assessment. Disability assessment (D) focuses on the functional limitations caused by a disability and is not always included in a comprehensive health assessment.

Correct Answer: B

Rationale: The correct answer is B because alcohol can interact with medications and exacerbate certain medical conditions. The nurse needs this information to ensure the patient's safety and well-being. Choice A is incorrect because the question is not about the patient's reliability. Choice C is incorrect as it assumes the nurse is required to educate the patient about alcohol dangers. Choice D is incorrect because even without an obvious drinking problem, alcohol use can still impact the patient's health.