The physician orders Dopamine 2.5 mcg/kg/min. Available is Dopamine 200mg in 250 ml normal saline. The client's weight is 138.6 lbs. Calculate mcg/min, mcg/hr. and mL/hr
The Correct Answer is ["11.8"]
To calculate the dosage for Dopamine as per the physician's order, we first convert the client's weight from pounds to kilograms, knowing that 1 kg equals 2.2 lbs. The client weighs 138.6 lbs, which is approximately 62.9 kg (138.6 lbs / 2.2). Now, using the ordered dose of 2.5 mcg/kg/min, we multiply the client's weight in kg by the dose to find the mcg/min: 62.9 kg * 2.5 mcg/kg/min = 157.25 mcg/min. To find mcg/hr, we multiply this by 60 minutes: 157.25 mcg/min * 60 = 9435 mcg/hr.
Next, we need to calculate mL/hr. We have Dopamine 200 mg in 250 mL, which is 200,000 mcg in 250 mL since 1 mg equals 1000 mcg. This gives us a concentration of 800 mcg/mL (200,000 mcg / 250 mL). To find the mL/hr, we divide the mcg/hr by the concentration: 9435 mcg/hr / 800 mcg/mL = 11.8 mL/hr.
Rounding to the nearest tenth, the final dosages are:
mcg/min: 157.3 mcg/min
mcg/hr: 9435 mcg/hr
mL/hr: 11.8 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is C
Explanation
A. Severe dehydration is not a typical concern when discontinuing prednisone.
B. Rebound pulmonary congestion is not a known risk of stopping prednisone suddenly.
C. Adrenocortical insufficiency can occur if prednisone is discontinued abruptly because the body needs time to resume normal cortisol production.
D. Hyperglycemia is a side effect of prednisone use but is not a concern when tapering off the medication.
Correct Answer is D
Explanation
. Increasing fluid intake would worsen fluid retention in SIADH.
B. A low-sodium diet is not indicated as it could exacerbate hyponatremia.
C. IV hypertonic saline is used in severe cases of hyponatremia but requires careful monitoring.
D. Restricting fluid intake is the primary intervention to prevent further dilution of sodium and manage SIADH effectively.
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