12. The physician has ordered the patient to receive Heparin 20 u/kg/hr in a continuous IV infusion. The client weighs 195 pounds. Heparin is available in a premixed bag and is labeled as 25,000 units in 250 ml. Calculate how many ml/hr to set the IV pump. Round answer to nearest whole number.
The Correct Answer is ["18"]
To calculate the IV pump setting, first convert the patient's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The patient weighs 195 pounds, which is approximately 88.64 kilograms (195 / 2.2). Next, calculate the total units of Heparin needed per hour by multiplying the patient's weight in kilograms by the dosage ordered: 20 units/kg/hr. So, 88.64 kg * 20 units/kg/hr equals 1,772.8 units/hr. Now, determine how many milliliters per hour this dosage requires. Since the premixed bag contains 25,000 units in 250 ml, there are 100 units per ml (25,000 units / 250 ml). Finally, divide the total units needed per hour by the concentration to find the volume needed per hour: 1,772.8 units/hr / 100 units/ml equals 17.728 ml/hr. Rounded to the nearest whole number, the IV pump should be set to 18 ml/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A balanced diet with adequate carbohydrates is important for managing Addison's disease; a low-carbohydrate diet is not recommended.
B. Restricting fluid intake is not appropriate for Addison's disease; adequate fluid intake is necessary.
C. Administering oral corticosteroids is crucial to replace the deficient cortisol levels and prevent Addisonian crisis.
D. While daily weight monitoring is important, administering corticosteroids addresses the immediate risk of crisis.
Correct Answer is ["18"]
Explanation
To calculate the IV pump setting, first convert the patient's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The patient weighs 195 pounds, which is approximately 88.64 kilograms (195 / 2.2). Next, calculate the total units of Heparin needed per hour by multiplying the patient's weight in kilograms by the dosage ordered: 20 units/kg/hr. So, 88.64 kg * 20 units/kg/hr equals 1,772.8 units/hr. Now, determine how many milliliters per hour this dosage requires. Since the premixed bag contains 25,000 units in 250 ml, there are 100 units per ml (25,000 units / 250 ml). Finally, divide the total units needed per hour by the concentration to find the volume needed per hour: 1,772.8 units/hr / 100 units/ml equals 17.728 ml/hr. Rounded to the nearest whole number, the IV pump should be set to 18 ml/hr.
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