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πŸ’§ Maintenance Fluid Rate Calculator (4-2-1 Rule)

Determine daily and hourly IV maintenance fluid requirements for adult and pediatric patients using the clinical 4-2-1 rule.

What is this tool?

When a patient is nil per os (NPO) or unable to drink fluids, setting an appropriate intravenous fluid rate is critical to maintain hydration balance. This tool utilizes the classic Holiday-Segar methodology to prevent volume overload or dehydration.

How it works?

Simply enter the patient’s weight in kilograms. The engine separates the weight into foundational tiers (0-10kg, 10-20kg, and >20kg) to calculate the exact hourly rate in mL/hour.

Is it free for all?

Yes, Free for all medical staff! A staple utility for surgical residents, pediatric teams, and internal medicine doctors managing overnight IV fluids.

Clinical Reference Source: Holliday MA, Segar WE. The maintenance need for water in parenteral fluid therapy. Pediatrics. 1957.

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