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 D
Explanation
A. Gradual improvement in symptoms occurs during the recovery phase, not the Plateau stage.
B. A relapse of symptoms is not typical during the Plateau stage.
C. Worsening of symptoms and rapid progression of muscle weakness occur during the acute phase, not the Plateau stage.
D. The Plateau stage is characterized by a stabilization of symptoms and no further progression of muscle weakness, marking the end of the acute phase and before the recovery phase begins.
Correct Answer is B
Explanation
A. Avoiding lasting health complications is always a goal, but this is not the primary reason for delaying the lumbar puncture.
B. Elevated intracranial pressure is a concern as performing a lumbar puncture could cause brain herniation in such cases.
C. While seizures can occur with bacterial meningitis, they are not a primary reason for delaying a lumbar puncture.
D. Knowing the pathogen does not negate the need for a lumbar puncture for definitive diagnosis and cerebrospinal fluid analysis.
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