which lab value is critical for a patient on heparin therapy

ATI RN

ATI RN Exit Exam

1. Which lab value is critical for a patient on heparin therapy?

A. Monitor aPTT
B. Monitor INR
C. Monitor platelet count
D. Monitor sodium levels

Correct answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

2. A nurse is assessing a client who is 4 hours postoperative following a total hip arthroplasty. Which of the following findings should the nurse report to the provider?

A. Blood pressure of 118/76 mm Hg
B. Heart rate of 88/min
C. Urinary output of 30 mL/hr
D. Hematocrit 42%

Correct answer: B

Rationale: The correct answer is B: 'Heart rate of 88/min.' A heart rate of 88/min in a postoperative client can be an early sign of bleeding or other complications. It is essential to report this finding promptly to the healthcare provider for further evaluation and intervention. Choices A, C, and D are within normal ranges for a postoperative client and do not indicate immediate concern. A blood pressure of 118/76 mm Hg is normal, urinary output of 30 mL/hr may be adequate depending on the client's fluid status, and a hematocrit of 42% is within the acceptable range for a postoperative client. Therefore, they do not require immediate reporting.

3. What is the most important assessment for a patient with respiratory distress?

A. Monitor oxygen saturation
B. Check for abnormal breath sounds
C. Check for pitting edema
D. Perform a neurological exam

Correct answer: A

Rationale: Monitoring oxygen saturation is crucial in assessing a patient with respiratory distress because it helps determine if the patient is receiving adequate oxygen. Oxygen saturation levels provide immediate feedback on the efficiency of oxygen delivery to the tissues. Checking for abnormal breath sounds (Choice B) is relevant in respiratory assessments, but it is secondary to assessing oxygen saturation. Pitting edema (Choice C) and performing a neurological exam (Choice D) are not directly related to assessing respiratory distress and are not the primary focus when managing a patient with breathing difficulties.

4. A nurse is providing teaching to a client who has a new diagnosis of hypertension. Which of the following dietary recommendations should the nurse include?

A. Limit sodium intake to 4 grams per day.
B. Limit protein intake to 80 grams per day.
C. Limit saturated fat intake to 7% of daily calories.
D. Limit fluid intake to 1,500 mL per day.

Correct answer: C

Rationale: The correct answer is to limit saturated fat intake to 7% of daily calories. This recommendation is crucial for clients with hypertension to lower cholesterol levels and promote heart health. Choice A, limiting sodium intake to 4 grams per day, is important for hypertension but not the best recommendation compared to limiting saturated fats. Choice B, limiting protein intake to 80 grams per day, is not a primary dietary concern for hypertension. Choice D, limiting fluid intake to 1,500 mL per day, is not a standard recommendation for hypertension management.

5. Which lab value should be monitored for a patient on warfarin therapy?

A. Monitor INR
B. Monitor potassium levels
C. Monitor platelet count
D. Monitor sodium levels

Correct answer: A

Rationale: The correct answer is to monitor INR for a patient on warfarin therapy. INR monitoring is crucial as it helps assess the therapeutic effectiveness and safety of warfarin. INR stands for International Normalized Ratio, and it measures the blood's ability to clot. Monitoring potassium levels (Choice B) is not specific to warfarin therapy. Monitoring platelet count (Choice C) is important but not the primary lab value for assessing warfarin therapy. Monitoring sodium levels (Choice D) is not directly related to warfarin therapy.