Use the low-dose range of 0.5–2 mcg/kg/min to determine the appropriate dose range of dopamine that would result in vasodilation and increased renal blood flow for a patient who weighs 132 pounds.Correct Answerb. 1–4.5 mg/hrShow ExplanationAsk StudyBuddySelect one:a. 0.3–6.2 mg/hrb. 1–4.5 mg/hrc. 1.8–7.2 mg/hrd. None of these are correct.
Question
Use the low-dose range of 0.5–2 mcg/kg/min to determine the appropriate dose range of dopamine that would result in vasodilation and increased renal blood flow for a patient who weighs 132 pounds.Correct Answerb. 1–4.5 mg/hrShow ExplanationAsk StudyBuddySelect one:a. 0.3–6.2 mg/hrb. 1–4.5 mg/hrc. 1.8–7.2 mg/hrd. None of these are correct.
Solution
First, we need to convert the patient's weight from pounds to kilograms because the dose range is given in mcg/kg/min. We know that 1 pound is approximately 0.453592 kg.
So, 132 pounds * 0.453592 kg/pound = 59.8742 kg.
Next, we use the low-dose range of 0.5–2 mcg/kg/min to determine the dose range in mcg/min.
So, 0.5 mcg/kg/min * 59.8742 kg = 29.9371 mcg/min. And, 2 mcg/kg/min * 59.8742 kg = 119.7484 mcg/min.
We know that 1 mg = 1000 mcg. So, we convert the dose range from mcg/min to mg/hr (since there are 60 minutes in an hour).
So, 29.9371 mcg/min * 1 mg/1000 mcg * 60 min/hr = 1.7962 mg/hr. And, 119.7484 mcg/min * 1 mg/1000 mcg * 60 min/hr = 7.1849 mg/hr.
Therefore, the appropriate dose range of dopamine that would result in vasodilation and increased renal blood flow for a patient who weighs 132 pounds is approximately 1.8–7.2 mg/hr.
So, the correct answer is c. 1.8–7.2 mg/hr.
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