Correct Answer: B

Rationale: The correct statement is B: 'Dehydration can increase the risk of preterm labor.' Dehydration can lead to increased uterine irritability, potentially causing preterm contractions and labor. Choice A is incorrect as dehydration is not treated with calcium supplements but rather with fluids. Choice C is incorrect as dehydration is not caused by decreased hemoglobin and hematocrit levels but rather by a lack of fluids. Choice D is incorrect as dehydration does not directly cause gastroesophageal reflux.

Correct Answer: A

Rationale: The correct answer is A: Hematemesis. Hematemesis (vomiting blood) is a sign of gastrointestinal bleeding and a serious complication of GERD. Melena (black, tarry stool) is also a sign of GI bleeding but is not as specific to GERD as hematemesis. Pallor may be present due to anemia from chronic blood loss, but it is not a direct complication of GERD. Steatorrhea is not typically associated with GERD; it is more indicative of malabsorption issues.

Correct Answer: D

Rationale: The correct answer is D: "You should limit your intake of high-protein foods." Clients with chronic kidney disease should reduce their intake of high-protein foods to lessen the workload on the kidneys and prevent further kidney damage. Choices A, B, and C are incorrect because increasing intake of either plant-based or animal protein or high-protein foods can exacerbate kidney issues in individuals with chronic kidney disease.

Correct Answer: D

Rationale: Clear breath sounds are an essential indicator of effective pneumonia treatment as they suggest resolution of the lung infection. A normal respiratory rate (A) indicates adequate breathing but does not directly reflect the effectiveness of pneumonia treatment. An elevated white blood cell count (B) is a sign of infection and may not decrease immediately with treatment. While maintaining an SpO2 of 95% (C) is crucial for oxygenation, it may not directly indicate the effectiveness of pneumonia treatment.

Correct Answer: B

Rationale: The correct answer is to verify the client's blood type and Rh factor. This action is crucial to ensure that the correct blood is administered, matching the client's blood type and Rh factor, which helps prevent transfusion reactions. Priming the IV tubing with 0.9% sodium chloride (Choice A) is not directly related to ensuring the correct blood product is administered. Administering the blood over 8 hours (Choice C) is not the standard practice for packed RBCs, which are usually given over a shorter period. Using a 22-gauge needle for venous access (Choice D) is not specific to the preparation for administering packed RBCs.