Correct Answer: C

Rationale: The correct answer is C: Left lateral. Placing the client in the left lateral position helps promote optimal cardiac output during pregnancy by avoiding pressure on the vena cava. This position improves venous return to the heart and subsequently cardiac output. Option A, Semi-Fowler's position, may not be the best choice for a client with cardiac disease as it does not alleviate pressure on the vena cava. Option B, supine with head elevated, can also compress the vena cava, reducing cardiac output. Option D, right lateral position, does not provide the same benefits as the left lateral position for cardiac output during pregnancy.

Correct Answer: A

Rationale: The correct answer is A: 'The client's urine output decreases.' Desmopressin is used to treat diabetes insipidus by reducing excessive urine output. Therefore, a decrease in urine output indicates that the medication is effectively controlling the symptoms. Choices B, C, and D are incorrect because desmopressin primarily affects urine output, not blood pressure, heart rate, or urine specific gravity.

Correct Answer: D

Rationale: Stridor is a high-pitched sound that indicates airway obstruction and is the priority finding to report following a thyroidectomy. In this situation, airway compromise is a critical concern that requires immediate intervention to ensure adequate oxygenation. While calcium level (Choice A) and serum sodium level (Choice B) are important assessments post-thyroidectomy, they do not represent an immediate threat to the client's airway. A respiratory rate of 18/min (Choice C) falls within the normal range and does not indicate an immediate risk to the client's airway compared to the presence of stridor.

Correct Answer: B

Rationale: The correct instruction for a client with GERD is to avoid drinking fluids with meals. This is because consuming fluids while eating can exacerbate reflux symptoms by increasing stomach distension and contributing to the reflux of stomach contents into the esophagus. Option A is incorrect as elevating the head of the bed can help prevent reflux during sleep, not while drinking fluids. Option C is incorrect as consuming three large meals a day can worsen GERD symptoms due to increased gastric distension. Option D is incorrect as lying down after eating can also worsen GERD symptoms by promoting the reflux of stomach contents into the esophagus.

Correct Answer: A

Rationale: Corrected Rationale: Changing the central line dressing daily is crucial in preventing infection at the insertion site. This practice helps maintain a clean and sterile environment around the central line, reducing the risk of pathogens entering the bloodstream. Monitoring for redness (choice B) is important but may not directly prevent infection. Checking the central line site every shift (choice C) is essential for early detection of any issues but does not solely prevent infection. Flushing the line with saline (choice D) is a necessary procedure for maintaining central line patency but does not primarily prevent infection.