A nurse is preparing to administer a scheduled dose of warfarin to a client. Which of the following laboratory tests should the nurse review prior to administration?
PT
Total iron-binding capacity
WBC
PTT
The Correct Answer is A
PT measures the time it takes for blood to clot, and it is particularly relevant for clients taking warfarin because warfarin works by inhibiting the synthesis of certain clotting factors, including factors II, VII, IX, and X, which are involved in the PT pathway. Monitoring PT levels helps ensure that the client is receiving an appropriate dose of warfarin to prevent clot formation without causing excessive bleeding.
B. Total iron-binding capacity (TIBC) is a test used to assess iron levels in the blood and is unrelated to warfarin therapy.
C. WBC (White Blood Cell count) is a test used to assess the number of white blood cells in the blood and is unrelated to warfarin therapy.
D. PTT (Partial Thromboplastin Time) is a test used to evaluate the intrinsic and common pathways of the coagulation cascade. It is used in the monitoring of heparin anticoagulant therapy. It is not typically used to monitor warfarin therapy
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Filgrastim is a medication that stimulates the production of white blood cells (WBCs), particularly neutrophils, which are a type of WBC important for fighting infections. An increase in the WBC count would indicate that filgrastim is effectively stimulating the production of WBCs, which is desirable, especially in clients who are at risk of neutropenia (low WBC count) due to chemotherapy or other factors.
Monitoring potassium levels is important for clients receiving certain medications or experiencing conditions that can affect potassium balance, but it is not specifically related to filgrastim therapy.
BUN is a measure of kidney function and hydration status, but it is not typically monitored to evaluate the effectiveness of filgrastim treatment.
INR is a measure of blood clotting and is primarily monitored in clients receiving anticoagulant therapy, such as warfarin. It is not relevant to filgrastim therapy.
Correct Answer is A
Explanation
Diuretics decrease potassium reabsorption in the renal tubules leading to urinary loss. hypokalemia can lead to an apparent overdose of digoxin even if the dose is within the therapeutic range. taking a high ceiling diuretic leads to hypokalemia which worsens digoxin toxicity. It is essential to monitor potassium levels in clients taking digoxin to prevent complications.
B, C, D- These histories do not predispose to digoxin toxicity
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