Correct Answer: B

Rationale: The correct answer is B: Deep vein thrombosis (DVT). Post-operative hip replacement patients are at high risk for DVT due to immobility and surgical trauma. The nurse should monitor for signs such as swelling, redness, and pain in the affected leg. DVT can lead to serious complications like pulmonary embolism if not detected early. Choices A, C, and D are incorrect because while pneumonia, wound infection, and hypoglycemia are also potential post-operative complications, they are not as directly associated with hip replacement surgery as DVT.

Correct Answer: B

Rationale: The correct answer is B: The diaphragm of the stethoscope. The diaphragm is used to assess heart murmurs as it allows for higher-frequency sounds to be heard more clearly. When assessing heart murmurs, using the diaphragm helps to differentiate between systolic and diastolic murmurs, as well as to identify specific characteristics such as intensity and location. A: The bell of the stethoscope is used for low-frequency sounds and would not be ideal for assessing heart murmurs. C: Palpation with the palm of the hand is used to assess pulses and vibrations, not heart murmurs. D: Asking another nurse to double-check the finding is important for validation but does not directly relate to the technique used to assess a heart murmur.

Correct Answer: C

Rationale: The correct answer is C because mental status is indeed inferred through assessment of an individual's behaviors. Mental health assessment involves observing and evaluating a person's thoughts, emotions, behaviors, and overall mental functioning to determine their mental status. This includes assessing speech, mood, cognition, and perception. Choices A, B, and D are incorrect because: A: Mental health assessment does not solely focus on diagnosing specific psychiatric disorders; it is a broader evaluation of an individual's mental well-being. B: Mental disorders can result from a variety of factors beyond everyday life stressors, such as genetic predisposition or traumatic experiences. D: Mental health assessment is more complex than assessing physical characteristics and involves subjective interpretation of behaviors rather than direct observation like physical assessments.

Correct Answer: A

Rationale: The correct answer is A: Quadriceps setting exercises. These exercises help prevent complications by strengthening the quadriceps muscles, which are crucial for knee stability and joint support post-surgery. They also aid in preventing muscle atrophy and promoting blood circulation. Leg lifts with weights (B) may strain the knee joint, leading to complications. Isometric muscle contractions (C) involve static muscle contractions and do not provide the necessary range of motion needed post-knee surgery. Active range-of-motion exercises (D) may be beneficial but should be performed after quadriceps setting exercises to avoid unnecessary strain on the knee joint.

Correct Answer: B

Rationale: The correct answer is B because ethnicity is defined by shared heritage, culture, language, or religion. This definition encompasses the key components that make up an individual's ethnic identity. Choice A is incorrect because while political forces may influence ethnicity, it does not define the concept itself. Choice C is incorrect as ethnicity is not necessarily related to belief in a higher power. Choice D is incorrect as ethnicity is not solely a learned behavior but also includes innate aspects like heritage.