Math and Medical Assisting
MM150-05 Survey to Mathematics
Shawna Huebner
July 16, 2013
Medical Assisting Career
Medical assistants complete administrative and clinical tasks in the offices of physicians, podiatrists, chiropractors, and other health practitioners. Their duties vary with the location, specialty, and size of the practice.
Medical assistants typically do the following:
• Take patient history and measure vital signs
• Help the physician with patient examinations
• Give patient injections as directed by the physician
• Schedule patient appointments
• Prepare blood for laboratory tests
Clark's Rule:
Weight of child (lb) / 150 adult dose = approximate child's dose
Young's Rule:
Age of child (yr) / age + 12 adult dose = approximate child’s dose
Fried's Rule:
Age in months / 150 adult dose = approximate child’s dose
PEDIATRIC DOSE CALCULATION BASED ON BODY WEIGHT A more reliable method of pediatric dose calculation than the preceding dosage rules bases the dosage on a given amount of drug per pound or kilogram of body weight.
NOTE: Round off all body weights in kilograms to the nearest whole number. Example: The parental dose of erythromycin injection is 10 mg/kg/24 hours. Calculate the daily dose of this drug for a 44-pound child.
(1) Step 1. Convert 44 pounds to kilograms.
44 pounds/2.2 = 20 kilograms
(2) Step 2. Multiply the client's weight by the dose.
Childs Dose = 20 kg 10 mg/kg = 200 mg/24 hrs (answer)
PEDIATRIC DOSE CALCULATIONS BASED ON SURFACE AREA
A newer and possibly more accurate method of pediatric dose calculation is based on body surface area. Although this method is not as widely used or accepted as calculations based on body weight, most if not all drugs may have their dosage expressed per square meter of body