Glucose Infusion Rate (GIR) Calculator

Glucose Infusion Rate (GIR) Formula

\[ \text{GIR} = \frac{\text{Dextrose Concentration (g/dL)} \times \text{Infusion Rate (mL/hour)} \times 1000}{\text{Weight (kg)} \times 60 \times 100} \]

Where:

• Dextrose Concentration (g/dL): Glucose content in the solution (grams per deciliter).
• Infusion Rate (mL/hour): Rate of glucose infusion.
• Weight (kg): Patient’s body weight in kilograms.
• 60: Converts hours to minutes.
• 100: Converts deciliters to milliliters.

Example Calculation

• Dextrose Concentration: 5 g/dL
• Infusion Rate: 50 mL/hour
• Patient Weight: 70 kg

Using the formula:

\[ \text{GIR} = \frac{5 \times 50 \times 1000}{70 \times 60 \times 100} = 0.6 \, \text{mg/kg/min} \]

Importance and Usage

1. Neonatal and Pediatric Applications:

   • Ensures safe and accurate glucose delivery for neonates and infants.

2. Critical Care:

   • Balances glucose infusion rates for ICU patients on parenteral nutrition.

3. Diabetes and Metabolic Disorders:

   • Adjusts glucose delivery in conjunction with insulin therapy.

Common FAQs

1. Why is Glucose Infusion Rate (GIR) important?

   • It ensures patients receive the correct glucose dose based on their weight, minimizing risks of hypoglycemia or hyperglycemia.

2. What is the normal GIR range for neonates?

   • The typical range is 4-6 mg/kg/min, but it may vary depending on individual needs.

3. What happens if the GIR exceeds the safe range?

   • Excessive GIR can lead to hyperglycemia, increased fat synthesis, and metabolic imbalances.