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Respiratory Alkalosis — NCLEX Cheat Sheet

↑ pH, ↓ CO₂ (hyperventilation)

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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 Respiratory Alkalosis on the NCLEX. Keep it handy during review and on exam day!

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Key numbers

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What to look for

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Nursing actions

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Why it happens

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ABG pattern: high pH (over 7.45) with low PaCO2 (under 35 mmHg); the low CO2 drives the disorder.

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