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Pediatric Fluid Maintenance — NCLEX Cheat Sheet

4-2-1 mL/kg/hr rule

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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-07-11 🏷️ Physiological Adaptation 🔖 Free to read, print, and share

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Use this quick-reference guide to spot, treat, and prevent Pediatric Fluid Maintenance on the NCLEX. Keep it handy during review and on exam day!

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Key facts

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Key facts

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Nursing actions

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Notify / act now

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The 4-2-1 hourly rule: 4 mL/kg for the first 10 kg, plus 2 mL/kg for the next 10 kg, plus 1 mL/kg for each kg over 20.

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