Correct Answer: A

Rationale: Broccoli is the correct answer as it is a good source of calcium, which is essential for clients with osteoporosis. Broccoli is a green leafy vegetable that provides a significant amount of calcium. Chicken breast, white bread, and apple do not contain as much calcium as broccoli and therefore are not the best choices to recommend for increasing calcium intake in clients with osteoporosis.

Correct Answer: D

Rationale: A Mantoux tuberculosis skin test without induration is considered negative. In this case, with 5mm of erythema and no induration, the result is negative, indicating no current infection. The best initial nursing action is to document these negative results in the healthcare worker's medical record. Reviewing the history for possible exposure to TB is unnecessary as the test result is negative. Instructing the healthcare worker to return for a repeat test or referring for INH therapy is not warranted when the test is negative.

Correct Answer: B

Rationale: The correct early sign of varicella disease is general malaise. During the prodromal period, patients may experience low-grade fever, malaise, and anorexia. Increased appetite and crusty sores are not typically early signs of varicella. The appearance of lesions occurs later in the course of the disease.

Correct Answer: D

Rationale: One unit of PRBCs typically raises the hematocrit by 3%. Since the client received 4 units, the hematocrit is expected to increase by approximately 12% (4 units x 3% per unit). Therefore, the nurse should expect the client's hematocrit to be 29% after all PRBCs have been transfused. Choices A, B, and C are incorrect as they do not account for the cumulative effect of multiple PRBC units on the hematocrit level.

Correct Answer: B

Rationale: The correct answer is B: Crackles in the lung bases. Crackles in the lung bases are indicative of pulmonary congestion, which is a classic sign of left-sided heart failure. Left-sided heart failure leads to a backup of blood into the lungs, causing fluid leakage into the alveoli and resulting in crackles upon auscultation. Choices A, C, and D are less specific to left-sided heart failure. Jugular vein distention can be seen in right-sided heart failure, peripheral edema can be seen in both right and left-sided heart failure, and bounding peripheral pulses are more indicative of conditions like hyperthyroidism or anemia rather than specifically supporting left-sided heart failure.