General Information
BD Alaris
TM
System with Guardrails
TM
Suite MX User Manual 185
Drug Calculation Definitions and Formulas
The pump module and syringe module use the following parameters, entered during the drug calculation
setup procedure:
• Bolus dose duration: T
ime period over which bolus dose is to be administered.
• Bolus dose units: U
nits used in calculating bolus dose. Bolus dose units are selected from alternatives
provided.
• Diluent volume: V
olume of fluid used as diluent for drug (mL).
• Dosing units: Units used to calculate Continuou
s Infusion drug dose. Dosing Units are selected from
alternatives provided.
• Drug amount: A
mount of drug in IV container (gram, mg, mcg, mEq, or units).
• Patient weight: We
ight of patient (kg); this is an optional parameter that is not needed unless drug
dose is normalized for patient weight.
• Time units: Time base for all calculations (minute, hour, or day)
.
The bolus dose, drug dose, and flow ra
te parameters are calculated using the above parameters, as follows:
• Bolus dose = Bolus dose x patient weight (if used).
• Bolus dose administration rate (
INFUSE AT:):
When duration is entered = total dose / duration in minutes.
When Max Rate is used = Max Rate / 60 x concentration.
• Bolus dose duration = bolus VTBI / bolus rate.
• Bolus dose VTBI = bolus dose / drug concentration.
• Bolus rate = bolus VTBI / duration.
• Continuous drug dose = flow rate x drug concentration (normalized for pa
tie
nt weight if specified by
entering a patient weight).
• Continuous flow rate = drug dose / drug concentration (normalized for patient
weight if specified by
entering a patient weight).
• Duration = VTBI / rate.
• Drug concentration = drug amount / diluent volume.
• Rate = VTBI / duration.
• Total bolus dose:
Bolus dose not weight-bas
ed =
Bolus dose entered.
Bolus dose weight-based = Bolus dose x p
atient weight.
The Drug Calculation feature is to be used only by personnel properly trained in the
administration of continuously infused medications. Extreme caution should be exercised to
ensure the correct entry of the drug calculation infusion parameters.
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