Advanced Critical Care encompasses the professional, ethical, and regulatory frameworks guiding advanced practice nursing. Advanced Critical Care requires understanding of NP scope of practice, prescriptive authority, collaborative practice agreements, documentation standards, and quality improvement methodologies. Connect Critical Care to bedside cues you will reassess first: vitals trends, work of breathing, perfusion, mentation, and pain or ischemic equivalents when relevant. NCLEX items often reward recognizing when subtle instability outweighs reassurance, then selecting nursing actions that protect airway, circulation, and neurologic status before routine tasks.