Med Math Flashcards
You are dispatched to a pediatric patient experiencing a seizure. You have been ordered to administer 0.2 mg/kg IM midazolam slow IM. Your patient weights 12 lbs, or 6kg by Broselow tape. Your Midazolam is in a concentration 1mg/mL. What volume will you administer?
Pt: 12 lbs
Dose: 0.2mg/kg IM
Concentration: 1mg/mL
Volume: X
0.2 mg X mg
——— = ——–
1 kg 6 kg
mg = 6kg(0.2mg) = 1.2 mg
1 mg 1.2 mg
——- = ——
1 mL. X mL
X mL = 1.2 mL
A patient is suffering from “crushing” sun-sternal chest pain. Protocol allows administration of 2-5 mg Morphine IM. What volume of morphine should be given to administer 2 mg of IM morphine? The [morphine] of 10mg/mL.
[ ] = 10mg/1 mL = 1 mg/0.1 mL
2mg = 0.2 mL
You are allowed to administer 150 mg of amiodarone over 10 minutes for a patient with wide complex tachycardia. You will administer it via a 60gtt/mL set. Total vol. to be infused is 100 mL.
At what rate will you administer the fluid/drug?
150 mg amiodarone/100 mL NS BAG
100 mL/10 min)(60gtt/mL) = 600 gtt/min (wide open
You have a patient who you suspect to have airway compromise after being pulled from a fire. There is soot around the mouth and singed nasal hair. You are ordered to provide 0.05mg/kg of midazolam and 0.5mg/kg etomidate prior to intubation.
Your patient weighs 160 lbs.
Your [etomidate] is 2mg/mL.
Your [midazolam] is 1mg/mL.
What dose and volume of each medication will you administer?
160 lb/(2.2kg/lb)= 72 kg
Midazolam:
(0.05mg/kg)(72 kg) = 3.6 mg
(3.6mg/ XmL) = (1mg/1 mL)
(X mL) = (3.6mg/1mL)
X = 3.6 mL
Etomidate:
(0.5mg/kg)(72kg) = 36 mg
(36 mg/X mL) = (2mg/1mL)
X mL = (36mg)/(2mg/mL)
X mL = 18 mL
