Correct Answer: B

Rationale: The correct answer is B: Activated partial thromboplastin time (aPTT). This test is used to monitor the effectiveness of heparin therapy. A complete blood count (CBC) (choice A) is not specific for monitoring heparin therapy. Prothrombin time (PT) (choice C) and International normalized ratio (INR) (choice D) are more commonly used to monitor warfarin therapy, not heparin.

Correct Answer: A

Rationale: Increasing fluid intake is crucial as it helps to thin mucus secretions, making them easier to expectorate. This can alleviate the client's symptoms of shortness of breath and productive cough. Option B is not the most important action in this scenario, as it does not directly address the client's respiratory distress. Option C, while important, focuses on medication side effects rather than addressing the immediate breathing difficulties. Option D, teaching anxiety reduction methods, is not the priority when the client's main concern is respiratory distress.

Correct Answer: C

Rationale: Hematuria is the most important assessment finding to report to the healthcare provider in a client with SLE during an exacerbation. Hematuria indicates kidney involvement, a serious complication of SLE that requires prompt medical attention. While low-grade fever, muscle atrophy, and joint pain are symptoms that can occur in SLE, hematuria signifies potential renal damage, which is a critical concern in SLE exacerbations.

Correct Answer: C

Rationale: The correct answer is C: Heart defects. Many children with Down syndrome are born with congenital heart defects. These heart abnormalities are more prevalent in individuals with Down syndrome than in the general population. Choices A, B, and D are incorrect because while they may be congenital defects in children, they are not commonly associated with Down syndrome. Hypospadias is a urogenital condition, pyloric stenosis affects the stomach, and hip dysplasia involves the hip joint, but these are not typically seen as frequently as heart defects in children with Down syndrome.

Correct Answer: B

Rationale: The correct answer is to 'Shake the inhaler well before use.' This instruction is crucial as shaking the inhaler ensures the proper mixing of the medication, which is essential for its effective delivery. Option A is incorrect because using the inhaler only before bedtime may not provide adequate relief during the day. Option C is incorrect as exhaling fully is a good practice but not the most essential instruction. Option D is incorrect as taking two puffs every hour may exceed the recommended dosage and lead to adverse effects.