Correct Answer: D

Rationale: The most appropriate response for the nurse in this situation is to acknowledge that teenagers often exhibit signs of sexual interest in females. This response normalizes the mother's concern and provides reassurance that such behavior is typical during adolescence. Option A deflects the conversation to the doctor without addressing the mother's concern directly. Option B focuses on the duration rather than addressing the mother's statement. Option C may come off as defensive or dismissive, questioning the mother's observation. Therefore, the best response is to acknowledge the normalcy of teenage behavior regarding sexual interest.

Correct Answer: A

Rationale: The correct answer is 'vascular perfusion of the tissue or organ.' Drug distribution is primarily determined by how well the circulatory system delivers the drug to various tissues and organs. Adequate perfusion ensures proper distribution of the drug throughout the body. While the salt form (choice B), drug interactions (choice C), and steady state (choice D) can influence drug efficacy and metabolism, they are not as crucial as vascular perfusion for the initial distribution of a drug.

Correct Answer: A

Rationale: The correct answer is 'Dizziness and light-headed sensations.' Minipress, a medication used to control hypertension, can cause hypotension as a side effect. Dizziness and light-headed sensations are common symptoms of hypotension. Weight gain, sensory changes in the lower extremities, and fatigue are not typically associated with Minipress or hypertension management. Therefore, they are incorrect choices.

Correct Answer: B

Rationale: The correct answer is to inform the mother that the infant's weight gain is normal. Infants typically double their birth weight by 6 months, which is precisely the case here, with the infant's weight increasing from 6 lb 8 oz to 13 lb. This weight gain indicates healthy growth and development. Therefore, there is no need to decrease feedings. The infant should continue with breast milk as it is providing adequate nutrition. Additionally, introducing semisolid foods is usually recommended between 4 and 6 months of age, so there is no indication to delay based on the infant's weight gain.

Correct Answer: A

Rationale: Pleurisy is an inflammation of the pleura and is often accompanied by an abrupt onset of pain. Symptoms of pleurisy include sudden sharp, stabbing pain that is usually unilateral and localized to a specific portion of the chest. The pain can be exacerbated by deep breathing. In contrast, pleural effusion is characterized by fluid accumulation in the pleural space, not sharp pain. Atelectasis involves collapse or closure of a lung leading to reduced gas exchange, but it does not typically present with sharp, stabbing pain. Tuberculosis is a bacterial infection that can affect the lungs but does not typically manifest with sudden sharp pain exacerbated by deep breathing.