Correct Answer: B

Rationale: The correct teaching for a client prescribed warfarin is to report any signs of bleeding, such as unusual bruising, nosebleeds, or blood in the urine or stool. Warfarin is an anticoagulant that increases the risk of bleeding, so it is crucial for the client to promptly report any bleeding-related symptoms for evaluation by a healthcare provider. Choices A, C, and D are incorrect. Avoiding foods high in vitamin K, such as spinach, is more relevant for clients taking warfarin to maintain consistent vitamin K intake. Warfarin should be taken with food to avoid gastrointestinal upset, so taking it on an empty stomach is not recommended. Monitoring for changes in blood pressure is not directly related to warfarin therapy; instead, the focus should be on monitoring for signs of bleeding.

Correct Answer: D

Rationale: The correct next step for the nurse is to measure the area of crepitus. Crepitus indicates subcutaneous emphysema, which is a serious condition requiring monitoring. Applying a pressure dressing (Choice A) could worsen the condition by trapping air under the skin. Administering an oral antihistamine (Choice B) is not indicated for crepitus. Assessing for allergies to cleaning agents (Choice C) is not the priority when dealing with crepitus and subcutaneous emphysema.

Correct Answer: A

Rationale: Blurry vision in clients with type 1 diabetes may indicate hyperglycemia, which requires prompt assessment of recent blood glucose levels to determine the cause and appropriate intervention. Checking the client's hemoglobin A1C level (Choice B) is useful for assessing long-term glucose control, not for immediate management of blurry vision. Monitoring blood pressure (Choice C) is important in diabetes care but is not the most crucial assessment when blurry vision is reported. Examining the client's feet for signs of neuropathy (Choice D) is important in diabetic foot care but is not the priority when dealing with blurry vision.

Correct Answer: D

Rationale: The correct answer is D: 'Use diaphragmatic breathing to achieve better exhalation.' Diaphragmatic breathing is an essential intervention for clients with COPD as it helps improve exhalation and lung function, ultimately reducing symptoms over the long term. Option A is incorrect because high-flow oxygen during sleep is more relevant for clients with conditions like sleep apnea rather than COPD. Option B, 'Reduce risk factors for infection,' is important but not as specific to the long-term management of COPD as diaphragmatic breathing. Option C, 'Limit fluid intake to reduce secretions,' is not a recommended intervention for clients with COPD, as adequate hydration is crucial for maintaining respiratory health.

Correct Answer: C

Rationale: A blood pressure of 88/52 mmHg indicates hypotension, which is a sign of worsening septic shock. Hypotension can lead to organ failure and requires immediate intervention. Elevated heart rate (choice A), mild fever (choice B), and slightly increased respiratory rate (choice D) are common in septic shock and may not necessarily indicate a deteriorating condition as much as hypotension does.