Correct Answer: B

Rationale: Thrombophlebitis is a contraindication to combination oral contraceptives due to the increased risk of thromboembolic events. Hyperthyroidism, diverticulosis, and hypocalcemia are not contraindications to combination oral contraceptives. Hyperthyroidism may affect thyroid hormone levels but does not directly contraindicate oral contraceptives. Diverticulosis is a condition related to the digestive system and does not impact the use of oral contraceptives. Hypocalcemia, a low calcium level in the blood, is not a contraindication for oral contraceptives.

Correct Answer: C

Rationale: The correct action for the nurse to take is to ensure that the newborn wears a diaper. This is important to prevent irritation during phototherapy, as exposure to light can increase the risk of skin breakdown. Feeding the infant glucose water is unnecessary and not indicated for jaundice treatment. Keeping the infant's head uncovered allows the light to reach the skin effectively. Applying lotion to the newborn every 4 hours can interfere with the effectiveness of phototherapy and is not recommended.

Correct Answer: A

Rationale: An elevated BUN level indicates possible nephrotoxicity, which is a side effect of gentamicin and should be reported. Elevated serum creatinine and WBC count are not specifically related to gentamicin therapy. Normal serum glucose levels are also within the expected range.

Correct Answer: C

Rationale: The correct intervention for a client with severe preeclampsia is to monitor intake and output. This is crucial to assess kidney function, fluid balance, and detect any signs of deterioration. Administering magnesium sulfate is indicated for seizure prophylaxis in severe preeclampsia, but it is not the primary intervention related to care planning. Placing the client in the left lateral position is not a specific intervention for managing preeclampsia. Providing a low-sodium diet is not typically recommended for clients with severe preeclampsia as sodium restriction is not a primary treatment modality for this condition.

Correct Answer: A

Rationale: The correct intervention for a client with obsessive-compulsive disorder is to allow the client enough time to perform rituals. This helps manage anxiety and stress in individuals with OCD. Allowing time for rituals can provide a sense of control and reduce distress. Choice B, giving the client autonomy in scheduling activities, may not address the core symptoms of OCD related to rituals and compulsions. Choice C, discouraging the client from exploring irrational fears, goes against the principles of exposure therapy, which is a common treatment for OCD. Choice D, providing negative reinforcement for ritualistic behaviors, is not recommended as it can reinforce the behavior rather than help the client manage it.