A nurse is caring for a patient who has undergone a total knee replacement. Which of the following interventions is most important to prevent post-operative complications?

Correct Answer: A

Rationale: The correct answer is A: Encouraging early ambulation. Early ambulation helps prevent complications such as deep vein thrombosis and pulmonary embolism by improving circulation and preventing blood clots. It also promotes joint mobility and muscle strength. Providing pain medication (B) is important but not as crucial as preventing complications. Monitoring for signs of infection (C) is essential but not the most important intervention. Administering antibiotics before surgery (D) does not directly prevent post-operative complications related to knee replacement.

Correct Answer: B

Rationale: The correct answer is B: Bleeding or perforation. After a colonoscopy, the patient is at risk for bleeding or perforation which are serious complications requiring immediate attention. Monitoring for signs such as abdominal pain, rectal bleeding, or signs of peritonitis is crucial. Choice A is not a priority unless the patient shows signs of shock. Choice C is a common post-procedure issue but not a priority complication. Choice D, pain at the insertion site, is expected and can be managed with analgesics.

Correct Answer: C

Rationale: The correct answer is C because stopping medication without consulting a healthcare provider can lead to uncontrolled hypertension. Choice A shows understanding of monitoring blood pressure, B demonstrates adherence to medication regimen, and D indicates awareness of dietary management. Choice C is incorrect because abruptly stopping medication can have serious health consequences, making further education necessary.

Correct Answer: D

Rationale: The correct answer is D: Increasing caffeine consumption. Caffeine can potentially raise blood pressure in individuals with hypertension. The rationale is that caffeine is a stimulant that can lead to temporary spikes in blood pressure. This can be harmful for patients with a history of hypertension as it can exacerbate their condition. A: Increasing potassium intake is generally recommended for individuals with hypertension as it can help lower blood pressure. B: Consuming more fruits and vegetables is also beneficial for hypertension due to their high fiber and nutrient content. C: Limiting sodium intake is crucial for managing hypertension as high sodium levels can lead to increased blood pressure. In summary, increasing caffeine consumption is the correct answer to avoid for patients with hypertension, as it can potentially worsen their condition by raising blood pressure.

Correct Answer: A

Rationale: The correct answer is A because increased sputum production and shortness of breath are classic signs of exacerbation in COPD. This indicates worsening airflow limitation and potential respiratory distress. Monitoring these signs helps in early intervention and preventing further complications. B: Improved oxygen saturation is not a sign of exacerbation in COPD. It would actually suggest improvement in the patient's condition. C: Increased energy levels are not typical signs of exacerbation in COPD. Patients usually experience fatigue and weakness during exacerbations. D: Decreased respiratory rate is not indicative of exacerbation in COPD. It could be a sign of respiratory depression or sedation, but not exacerbation.