Acid Base Physiology

Learning objectives - Explain acid base physiology in plain clinical language and connect it to ABCs, rhythm risk, neurologic change, fluid balance, lab trends, and emergency escalation. - Identify the assessment cues that make the client stable, unstable, expected, unexpected, urgent, or appropriate for delegation. - Choose first and next nursing actions using the pathway scope for NCLEX-RN US. - Teach the client or family using language that protects safety, consent, dignity, and follow-up. Exam relevance Acid Base Physiology appears in high-frequency nursing stems because it tests judgment, not memorized vocabulary. The safe answer links the most concerning cue to an action the nurse can take now. Distractors usually delay assessment, over-delegate judgment, ignore policy, or choose teaching before physiologic or legal safety. Pathway context: NCLEX-RN US. Apply this topic through registered nursing assessment, care planning, delegation, escalation, and client teaching. US wording should respect facility policy, nurse practice act framing, HIPAA-style confidentiality concepts, and NCLEX client-needs language. Continue from the pathway hub: /us/rn/nclex-rn/lessons. On the exam, writers often pair stable-sounding options with unstable data—notice the mismatch before you commit.