what is the most critical lab value to monitor for a patient on heparin therapy
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Nursing Elites

ATI RN

ATI RN Exit Exam Quizlet

1. What is the most critical lab value to monitor for a patient on heparin therapy?

Correct answer: A

Rationale: The correct answer is to monitor aPTT levels. Activated Partial Thromboplastin Time (aPTT) is crucial for assessing the therapeutic effectiveness of heparin, as it reflects the intrinsic pathway of the coagulation cascade. Monitoring aPTT helps ensure that the patient is within the therapeutic range of heparin, minimizing the risk of bleeding complications. Platelet count (choice B) is important to assess for potential heparin-induced thrombocytopenia but is not the primary lab value to monitor during heparin therapy. INR levels (choice C) are monitored in patients on warfarin therapy, not heparin. Sodium levels (choice D) are not directly related to heparin therapy monitoring.

2. A nurse is caring for a client who is in labor and has an external fetal monitor in place. The nurse observes late decelerations in the fetal heart rate. Which of the following findings should the nurse identify as the cause of late decelerations?

Correct answer: B

Rationale: Late decelerations in the fetal heart rate are caused by uteroplacental insufficiency, which results from inadequate blood flow to the placenta. This leads to reduced oxygen and nutrients reaching the fetus during contractions. Choice A, fetal head compression, does not typically cause late decelerations but can result in variable decelerations. Choice C, umbilical cord compression, usually leads to variable decelerations. Choice D, fetal hypoxia, is a broad term and not the direct cause of late decelerations, which are specifically linked to uteroplacental insufficiency.

3. A healthcare professional is assessing a client who has chronic kidney disease. Which of the following findings is an indication for hemodialysis?

Correct answer: D

Rationale: A glomerular filtration rate of 14 mL/min indicates severe kidney impairment and the need for hemodialysis. The other choices, such as BUN 16 mg/dL, serum magnesium 1.8 mg/dL, and serum phosphorus 4.0 mg/dL, are within normal ranges and do not directly indicate the need for hemodialysis in chronic kidney disease.

4. A nurse is assessing a client who is receiving enteral feedings through a nasogastric tube. Which of the following findings requires immediate intervention?

Correct answer: C

Rationale: Auscultating crackles in the lung bases indicates fluid in the lungs, which can be a sign of aspiration pneumonia or pulmonary edema and requires immediate intervention to prevent respiratory distress. Aspirating 100 mL of gastric residual is within the acceptable range and does not require immediate intervention. A gastric pH of 4 is normal for gastric contents. Checking residual every 6 hours is a routine nursing intervention and does not indicate an urgent issue like pulmonary complications.

5. A nurse is reviewing the laboratory results of a client who is at 36 weeks of gestation. The nurse should report which of the following laboratory results to the provider?

Correct answer: A

Rationale: A hemoglobin level of 11.2 g/dL is below the normal range for a client who is 36 weeks gestation and should be reported to the provider.

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