A nurse is reviewing laboratory results of a client who has atrial fibrillation and is taking warfarin. For which of the following results should the nurse notify the provider?
Platelets 190,000/mm3
Hct 44%
PT 45 seconds
Hgb 16 g/dL
The Correct Answer is C
Choice A reason: Platelets 190,000/mm3 is within the normal range of 150,000 to 450,000/mm3. This result does not indicate a bleeding risk or a need to adjust the warfarin dose.
Choice B reason: Hct 44% is within the normal range of 37% to 47% for females and 42% to 52% for males. This result does not indicate anemia or polycythemia, which could affect the warfarin therapy.
Choice C reason: PT 45 seconds is above the normal range of 11 to 13.5 seconds. This result indicates that the blood is taking too long to clot, which increases the risk of bleeding. The nurse should notify the provider and expect a decrease in the warfarin dose.
Choice D reason: Hgb 16 g/dL is within the normal range of 12 to 16 g/dL for females and 14 to 18 g/dL for males. This result does not indicate anemia or polycythemia, which could affect the warfarin therapy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Reducing intake of potassium-rich foods is not necessary for clients taking hydrochlorothiazide, as this medication can cause hypokalemia (low potassium levels) due to increased potassium excretion in the urine. Clients may need to increase their intake of potassium-rich foods or take potassium supplements to prevent hypokalemia.
Choice B reason: Avoiding grapefruit juice is not necessary for clients taking hydrochlorothiazide, as this medication does not interact with grapefruit juice. Grapefruit juice can affect the metabolism of some other medications, such as statins, calcium channel blockers, and cyclosporine, by inhibiting the enzyme CYP3A4 in the liver.
Choice C reason: Taking this medication before bedtime is not advisable for clients taking hydrochlorothiazide, as this medication can cause increased urination and nocturia (nighttime urination). Clients should take this medication in the morning or at least 6 hours before bedtime to avoid disrupting their sleep.
Choice D reason: Monitoring for leg cramps is an important instruction for clients taking hydrochlorothiazide, as this medication can cause muscle cramps due to electrolyte imbalances, such as hypokalemia, hyponatremia (low sodium levels), or hypomagnesemia (low magnesium levels). Clients should report any signs of muscle cramps, weakness, or fatigue to their provider.
Correct Answer is C
Explanation
Choice A reason: Vitamin K is the antidote for warfarin, not heparin. Vitamin K reverses the effects of warfarin by increasing the synthesis of clotting factors in the liver.
Choice B reason: Glucagon is the antidote for insulin, not heparin. Glucagon increases the blood glucose level by stimulating the breakdown of glycogen in the liver.
Choice C reason: Protamine is the antidote for heparin, not vitamin K or glucagon. Protamine neutralizes the effects of heparin by binding to it and forming a stable complex.
Choice D reason: Iron is not an antidote for any anticoagulant. Iron is a mineral that is essential for the production of hemoglobin and red blood cells.
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