Infusion Rate Formula:
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This calculator converts medication doses expressed in micrograms per kilogram per hour (mcg/kg/hr) to the corresponding infusion rate in milliliters per hour (mL/hr) when using percent concentration solutions.
The calculator uses the following formula:
Where:
Explanation: The formula accounts for unit conversions between micrograms and milligrams, and between percentage concentration and mg/mL.
Details: Accurate infusion rate calculation is crucial for safe medication administration, especially for critical care medications with narrow therapeutic windows.
Tips: Enter dose in mcg/kg/hr, weight in kg, and concentration in percentage. All values must be positive numbers.
Q1: Why use percentage concentration?
A: Many IV medications, especially in critical care, are prepared as percentage solutions (e.g., 1%, 2%).
Q2: How do I convert percentage to mg/mL?
A: 1% = 10 mg/mL (1g/100mL = 1000mg/100mL = 10mg/mL).
Q3: What's the difference between mcg and mg?
A: 1 mg = 1000 mcg. The calculator handles this conversion internally.
Q4: When is this calculation most used?
A: Commonly used for vasoactive drugs, inotropes, and other weight-based continuous infusions.
Q5: What if my concentration is in mg/mL instead of percentage?
A: You would need a different calculator that uses mg/mL concentration directly.