A nurse is using the problem-oriented approach to data collection. Which action will the nurse take first?

Correct Answer: B

Rationale: The correct answer is B: Focus on the patient's presenting situation. In the problem-oriented approach, the nurse starts by identifying the patient's main issue or reason for seeking care. This step helps prioritize data collection and guides further assessment and intervention. By focusing on the presenting situation, the nurse can gather relevant information efficiently and address the immediate concern. Incorrect choices: A: Completing questions in chronological order may not be the most effective approach as it does not prioritize the patient's current problem. C: Making accurate interpretations of data comes after data collection and analysis, not as the first step. D: Conducting an observational overview is important, but it should come after focusing on the patient's presenting situation to gather targeted data.

Correct Answer: A

Rationale: The correct initial action for the nurse to take is A: Try to have the client breathe slower. This is because the client may be experiencing respiratory distress, and slowing down their breathing can help improve oxygenation. Giving O2 via nasal cannula (B) should be considered if the client's oxygen saturation is low after trying to slow down their breathing. Administering sodium bicarbonate (C) is not the appropriate initial action unless the client is experiencing severe acidosis. Monitoring the client's fluid balance (D) is important but not the best initial action in this scenario where respiratory distress is the concern.

Correct Answer: B

Rationale: The correct answer is B because subjective data in a nursing assessment refers to information provided by the patient, such as feelings, perceptions, and symptoms. In this case, the client stating 'I feel nauseated' represents subjective data. This type of information cannot be measured or observed directly. A, C, and D are incorrect: A: Heart rate of 90 beats per minute is an objective measurement that can be directly observed. C: Blood pressure of 130/80 mmHg is also an objective measurement that can be directly observed. D: Skin appears flushed is an objective observation that can be directly seen.

Correct Answer: A

Rationale: The correct answer is A because a positive diagnosis for HIV infection is confirmed through laboratory testing, specifically the ELISA and Western blot tests. These tests detect the presence of HIV antibodies in the blood, providing definitive evidence of the infection. Choice B is incorrect as weight loss and fever are symptoms but not diagnostic criteria. Choice C is incorrect as opportunistic infections are a consequence of HIV, not the diagnostic criteria. Choice D is incomplete and irrelevant. In summary, the key to diagnosing HIV is through positive laboratory tests, not just based on symptoms or associated infections.

Correct Answer: D

Rationale: The correct answer is D: high calorie high protein. In COPD exacerbation, the body requires extra calories and protein for energy and muscle strength. High-calorie foods help combat weight loss and fatigue. High-protein foods aid in muscle repair and maintenance. Low-fat low-cholesterol (A) is not ideal as healthy fats are needed. Low-sodium (B) is not necessary unless there is concurrent heart failure. Bland soft diet (C) is not suitable as it does not provide enough calories and protein needed for COPD exacerbation.

Correct Answer: C

Rationale: The correct answer is C: Airway obstruction. Postoperatively, a nurse must assess for airway patency in a client with a nasal fracture to ensure proper breathing. Any swelling or bleeding in the nasal area can lead to airway obstruction, which is a critical concern that needs immediate intervention. Choices A, B, and D are incorrect because an allergic reaction, extreme sense of smell, and stridor are not typically associated with postoperative assessment of a nasal fracture. It is crucial to prioritize airway assessment to prevent any complications related to breathing difficulties in this situation.

Correct Answer: D

Rationale: The correct answer is D: Maturates T cells. The thymus gland is crucial for the maturation of T cells, a type of white blood cell that plays a central role in the adaptive immune response. T cells mature in the thymus through a process of selection and education, where they learn to distinguish self from non-self antigens. This process is essential for the development of a functional immune system. Choices A, B, and C are incorrect because the thymus gland does not play a role in the maturation of B cells, platelets, or red blood cells, respectively.

Correct Answer: C

Rationale: The correct answer is C, which is to replace the foreskin over the head of the penis after washing. This is important to prevent any irritation or injury to the sensitive foreskin and glans. Leaving the foreskin retracted (A) can lead to discomfort and potential injury. Not retracting the foreskin (B) may not allow for proper cleaning. Using alcohol and a cotton swab (D) can be too harsh and irritating to the delicate tissues. Therefore, option C is the most appropriate and gentle approach to maintain proper hygiene and prevent any complications.

Correct Answer: A

Rationale: The correct answer is A: Detects the presence of malignant cells. Biopsy involves taking a sample of tissue to examine under a microscope for the presence of abnormal or cancerous cells. This procedure is crucial for diagnosing cancer accurately. Choice B (Measures hemoglobin content) is incorrect because hemoglobin content is typically measured through blood tests, not biopsies. Choice C (Measures the RBC size) is incorrect as RBC size is usually assessed through a complete blood count (CBC) test, not a biopsy. Choice D (Detects arterial occlusion) is incorrect because arterial occlusion is typically diagnosed through imaging studies like Doppler ultrasound or angiography, not through a biopsy procedure.