Pathophysiology
Clinical meaning
The IABP uses counterpulsation to augment coronary perfusion and reduce left ventricular workload. The balloon inflates during diastole (increasing diastolic augmentation and coronary perfusion pressure) and deflates just before systole (reducing afterload by creating a vacuum effect that facilitates ventricular ejection). This increases myocardial oxygen supply while decreasing demand. Connect Intra-Aortic Balloon Pump to bedside cues you will reassess first: vitals trends, work of breathing, perfusion, mentation, and pain or ischemic equivalents when relevant. Boards reward recognizing when subtle instability outweighs reassurance, then selecting nursing actions that protect airway, circulation, and neurologic status before routine tasks.