Fluid Bolus Calculator

How to calculate fluid bolus?

Fluid bolus calculation is based on the patient's total body weight. This approach ensures that the volume of fluid administered is proportional to the individual's physiological capacity, preventing both under-resuscitation and fluid overload.

Formula: bolus_volume = body_weight × dose_per_kg

Using the Fluid Bolus calculator: an example

Example: A 70 kg patient requires a 20 mL/kg bolus of Normal Saline.

Step-by-step calculation

• Identify patient weight in kg
• Determine prescribed mL/kg dose
• Multiply weight by dose to find total mL

Frequently Asked Questions

Why is weight-based dosing used?
It ensures that fluid volume is proportional to the patient's size, reducing the risk of fluid overload or under-resuscitation.

What is the standard bolus dose for adults?
Common resuscitation boluses range from 250 mL to 1000 mL, often calculated as 20-30 mL/kg in sepsis protocols.

Can this be used for pediatric patients?
While the formula is similar, pediatric boluses are typically capped and require closer monitoring; always follow local clinical guidelines.