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ABG and acid–base interpretation

Learn one fixed order for reading an arterial blood gas, see it applied to a normal pH that hides a mixed disorder, then practise on 20 graded fictional cases with worked answers. Free, with no account or email needed.

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Lesson

Start with the method

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  1. ABG interpretation in five steps

    Check the data, read the pH, find the primary process, compare the expected response, then look at the anion gap and oxygenation separately. Includes a worked example and a three-question self-check.

    Beginner to intermediate · about 10 minutes · Lesson · Reviewed 12 November 2026

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Practice

Practise on graded cases

Every set opens on the shared ABG practice page; every case, choice and worked answer is readable without an account or JavaScript. Completion marks, where shown, are kept only in this browser.

Learning by role

The role routes place these ABG sets alongside CXR, ventilation, calculations and OSCE practice. Back to all clinical skills.