Correct Answer: A

Rationale: Corrected Rationale: Monitoring skin turgor is a reliable method to assess dehydration in elderly patients. Skin turgor refers to the skin's elasticity or the skin's ability to return to its normal position after being pinched. In dehydration, the skin loses its elasticity, becoming less flexible and slower to return to its original state. Checking for dry mucous membranes (Choice B), monitoring for sunken eyes (Choice C), and checking capillary refill (Choice D) are all relevant assessments in dehydration but are not as specific or sensitive as monitoring skin turgor. Dry mucous membranes and sunken eyes are indicators of dehydration, while capillary refill is more related to circulatory status and less specific to dehydration.

Correct Answer: B

Rationale: The correct answer is B. Eating more leafy green vegetables can increase vitamin K intake, which may reduce the effectiveness of warfarin. This can lead to fluctuations in the International Normalized Ratio (INR) levels, affecting the medication's efficacy. Choices A, C, and D are correct statements. Taking warfarin every other day, using a soft toothbrush to prevent gum bleeding, and having regular INR checks are all appropriate and important actions when taking warfarin.

Correct Answer: A

Rationale: The correct answer is to monitor blood glucose levels. When a patient is receiving insulin therapy, it is crucial to monitor blood glucose levels regularly to prevent hypoglycemia, a potential side effect of insulin therapy. Monitoring potassium, calcium, or sodium levels is important for different medical conditions or treatments and is not directly related to insulin therapy.

Correct Answer: A

Rationale: The correct answer is A. An INR of 1.8 is below the therapeutic range for a client receiving warfarin, indicating a potential risk of blood clots. This value should be reported to the provider for further evaluation and possible adjustment of the warfarin dosage. Choices B, C, and D are within normal ranges and do not directly relate to the effectiveness or safety of warfarin therapy in this scenario, making them less urgent to report.

Correct Answer: A

Rationale: The most important nursing action when a patient has a central line is to monitor for infection. Central line-associated bloodstream infections are a serious complication that can lead to severe outcomes. Monitoring for infection involves assessing the patient for signs and symptoms such as fever, chills, and hypotension. While monitoring the central line dressing, redness, and swelling are also important aspects of care, they are secondary to monitoring for infection as the primary focus should be on preventing serious complications.