Correct Answer: D

Rationale: The correct answer is D, 'All of the Above.' Valproic acid can impact liver function and coagulation. Monitoring the Prothrombin Time (PTT), Aspartate Aminotransferase (AST), and Alanine Aminotransferase (ALT) is crucial. PTT is monitored to assess coagulation status, while AST and ALT are liver enzymes that indicate liver function. Monitoring these values helps detect any potential adverse effects of valproic acid on the liver and blood clotting. Choices A, B, and C are incorrect because each of these laboratory values plays a critical role in evaluating the client's response to valproic acid therapy and detecting associated complications.

Correct Answer: B

Rationale: An aPTT of 90 seconds is elevated, indicating a risk of bleeding due to excessive anticoagulation. The appropriate action is to reduce the infusion rate of heparin to prevent further complications. Administering vitamin K is not indicated for an elevated aPTT due to heparin therapy. Giving the client a low-dose aspirin can further increase the risk of bleeding when combined with heparin. Requesting an INR is not necessary for monitoring heparin therapy; aPTT is the more specific test for assessing heparin's therapeutic effect. Therefore, the correct action for the nurse to prepare to take is to reduce the infusion rate of heparin.

Correct Answer: A

Rationale: The correct answer is A: Jaundice. Sulfasalazine can cause liver damage as a possible adverse effect, which can manifest as jaundice. Monitoring for jaundice is crucial to detect liver-related adverse effects early. Choices B, C, and D are incorrect. Constipation, oral candidiasis, and sedation are not typically associated with sulfasalazine use. Therefore, the nurse should focus on educating the client specifically about monitoring for jaundice.

Correct Answer: A

Rationale: To determine the volume of heparin to administer per dose, divide the prescribed dose (8,000 units) by the concentration of heparin available (10,000 units/mL). 8000 units / 10000 units/mL = 0.8 mL. Therefore, the nurse should administer 0.8 mL per dose. Choice B, 0.9 mL, is incorrect as the correct calculation results in 0.8 mL. Choices C and D are significantly higher and incorrect, indicating an inaccurate calculation.

Correct Answer: D

Rationale: The correct action for the nurse to take first is to check the client's apical pulse. Nausea can be a sign of digoxin toxicity, and one of the early signs of digoxin toxicity is changes in the pulse rate. By checking the client's apical pulse, the nurse can assess if the digoxin level is too high. Encouraging the client to eat or administering an antiemetic may not address the underlying issue of digoxin toxicity. While informing the provider is important, assessing the client's condition through checking the apical pulse should be the immediate priority.