Correct Answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

Correct Answer: B

Rationale: The correct answer is B. Instructing the client to hold their breath for 10 seconds after inhaling the medication allows it to reach deeper into the lungs for maximum effectiveness. Choice A is incorrect because taking one puff every 5 minutes may lead to overuse of the medication. Choice C is incorrect as shaking the inhaler for only 2 seconds may not provide adequate mixing of the medication. Choice D is incorrect because exhaling forcefully after each puff may reduce the amount of medication that reaches the lungs.

Correct Answer: A

Rationale: Administering oxygen is the best nursing action for a patient experiencing shortness of breath as it helps alleviate the symptoms and improve oxygenation. Providing oxygen addresses the primary issue of inadequate oxygen levels in the body, which can be a life-threatening situation. Administering bronchodilators (choice B) may be appropriate for specific respiratory conditions like asthma but is not the initial intervention for all causes of shortness of breath. Repositioning the patient (choice C) can sometimes help improve breathing, but in a patient experiencing significant shortness of breath, immediate oxygen therapy is crucial. Providing IV fluids (choice D) is not indicated as the first-line intervention for shortness of breath unless there is a specific underlying cause such as dehydration.

Correct Answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

Correct Answer: C

Rationale: In clients with Syndrome of Inappropriate Antidiuretic Hormone (SIADH), the nurse should expect hyponatremia. SIADH leads to excess water retention, diluting the sodium levels in the blood, resulting in low serum sodium levels. Choice A, increased urine output, is incorrect as SIADH causes water retention, leading to decreased urine output. Choice B, increased serum sodium, is incorrect because SIADH causes a dilutional effect due to water retention, resulting in decreased serum sodium levels. Choice D, hypercalcemia, is unrelated to SIADH and not a typical finding.