Correct Answer: A

Rationale: The correct answer is A: 'I should test my blood sugar before each meal.' Monitoring blood sugar before meals is crucial for managing gestational diabetes as it helps in understanding how different foods affect blood sugar levels and adjusting insulin doses accordingly. Choice B is incorrect as food choices should be monitored carefully, not just relying on insulin. Choice C is incorrect because while it is important to manage carbohydrate intake, completely avoiding all carbohydrates is not recommended. Choice D is incorrect as blood sugar monitoring throughout the day is essential, not just at bedtime, to ensure proper control and management of gestational diabetes.

Correct Answer: C

Rationale: The correct instruction is to take levothyroxine on an empty stomach. This is necessary for proper absorption and effectiveness of the medication. Taking it with food can interfere with absorption. Timing is also crucial; it is usually recommended to take levothyroxine in the morning to prevent potential interactions with food and other medications throughout the day. Taking the medication in the evening may lead to sleep disturbances. Lastly, waiting to take the medication only when symptoms occur is not appropriate as levothyroxine is typically taken regularly to maintain thyroid hormone levels within the body.

Correct Answer: D

Rationale: The left lateral position is the correct choice to promote optimal cardiac output in a pregnant client at 32 weeks gestation with cardiac disease. This position improves venous return and decreases pressure on the vena cava, helping optimize cardiac output. Standing (choice B) would not be recommended as it may decrease venous return. The supine position (choice C) should be avoided in pregnant clients with cardiac disease as it can compress the vena cava, reducing cardiac output and potentially causing hypotension. The chest (choice A) is not a valid position recommendation for optimizing cardiac output in this scenario.

Correct Answer: C

Rationale: Instructing a patient about incentive spirometry falls under the implementation phase of the nursing process. During this phase, nursing interventions are put into action. Assessment (choice A) involves collecting data about the patient's condition, planning (choice B) involves setting goals and creating a care plan, and evaluation (choice D) involves assessing the outcomes of nursing interventions. Therefore, the correct answer is C, as it reflects the active teaching and intervention part of the process.

Correct Answer: B

Rationale: The correct answer is B: International normalized ratio (INR). The INR is used to monitor the effectiveness of warfarin therapy. A higher INR indicates a longer time it takes for the blood to clot, which is desirable in patients receiving warfarin to prevent blood clots. Platelet count (Choice A) assesses the number of platelets in the blood and is not directly related to warfarin therapy. Bleeding time (Choice C) evaluates the time it takes for a person to stop bleeding after a standardized wound, but it is not specific to monitoring warfarin effectiveness. Partial thromboplastin time (PTT) (Choice D) is more commonly used to monitor heparin therapy, not warfarin.