Volume Calculation Formula:
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This calculator converts medication doses from micrograms per kilogram (mcg/kg) to milliliters (ml) based on patient weight and drug concentration. It optionally calculates Body Surface Area (BSA) when height is provided.
The calculator uses the following formula:
When height is provided, it also calculates BSA using the Mosteller formula:
Explanation: The formula accounts for patient weight and drug concentration to determine the exact volume needed for the prescribed dose.
Details: Weight-based dosing is crucial for medications with narrow therapeutic indexes, especially in pediatric and critical care settings.
Tips: Enter dose in mcg/kg, weight in kg, and concentration in mcg/ml. For BSA calculation, include height in cm. All values must be positive numbers.
Q1: Why use weight-based dosing?
A: Weight-based dosing accounts for individual patient size, ensuring therapeutic efficacy while minimizing toxicity.
Q2: When is BSA important?
A: BSA is used for chemotherapy drugs, some antibiotics, and medications where body surface area affects distribution.
Q3: What if my concentration is in mg/ml?
A: Convert mg to mcg first (1 mg = 1000 mcg) before entering the concentration value.
Q4: How accurate is the BSA calculation?
A: The Mosteller formula is widely used and sufficiently accurate for clinical purposes in most patients.
Q5: Can I use this for pediatric patients?
A: Yes, this calculator is suitable for all ages when using appropriate weight and height measurements.