Ie 250000 mcg x mcg 1000 mcgml 250 ml 1 ml or 53 x

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ie: 250,000 mcg. = x mcg. = 1000 mcg/ml 250 ml 1 ml OR 53
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x mcg = 250,000 mcg 1 ml 250 ml X 1 x = 250,000 x 1 250 x = 1000 mcg (in 1 ml) OR 250,000 mcg: 250cc :: x mcg : 1 ml 4. Now plug into the formula. So, if order is to start Dobutrex at 5 mcg/min/kg and the patient weighs 70 kg: (5mcg.) (60 min/hr.) (70 kg.) 1000 mcg./1ml = 21 ml/hr (on the pump) OR Dimensional analysis example: Start Dobutrex 5 mcg/min/kg. Label reads Dobutrex 250 mg in 250 ml. Pt. weighs 70 kg. xml/hr = 250 ml 1 mg 5 mcg 60 min 70 kg 250 mg x 1000 mcg x 1 min/kg x 1 hr x = 5,250,000 = 21 ml/hr 250000 This formula can also be used to determine how many mcg/min/kg the patient is receiving if all you know is what the IV pump rate is, which is ml/hr. ( See full dimensional analysis example below at step 4.0 ) 1. Steps 1-3 are the same as above, to determine x mcg in 1 ml. 2. Set up ratio based on known pump rate, ml/hr. ie: mcg. = X mcg. 1ml Known ml on pump/hr 1000 mcg. = X mcg = 21,000 mcg/hr 1ml 21 ml on pump 54
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OR x mcg = 1000 mcg 21 ml 1 ml X 1 x = 1000 x 21 1 x = 21,000 mcg (per hour on pump) OR 1000 mcg : 1 ml :: x mcg : 21 ml on pump 3. Now, divide this by 60 minutes in one hr. to determine mcg/min. ie: 21,000 mcg/hr ÷ 60 min. = 350 mcg/min 4. Now divide by total kg. to determine mcg/min/ 1kg. ie: 350 mcg/min ÷ 70 kg = 5 mcg/min/kg Dimensional analysis example: The bag reads Dobutrex 250 mg. Added to 250 ml. The pump is set at 21 ml/hr. Patient weighs 70 kg. How many mcg/min/kg is the patient receiving? X mcg/min/kg = 1000 mcg x 250 mg x 21 ml x 1 hr = 1 mg 250 ml hr 60 min 5,250,000 15,000 = 350 mcg/min 350 mcg/min 70 kg = 5 mcg/min/kg Some drips are ordered in mcg or mg/min and not based on the patient = s weight.
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  • Fall '15
  • Collier
  • Nursing, Trigraph, ml, MCG, Dobutrex

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