Pain Physiology and Management involves multi-system pathophysiology requiring integration of knowledge across organ systems for pain physiology and management. Connect Pain Physiology 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.