Provide a comprehensive overview about anatomy and physiology of the heart, Intra-Aortic Balloon Pump (IABP) definition, history, physiological effects, timing and timing errors, indications and contraindications, complications and nursing care of the patient undergoing IABP therapy. Thesis study aims to assess nurses knowledge and practices regarding care of patients connected to Intra-Aortic Balloon Pump at selected Intensive Care Units. finally, findings of the current study, discusses nursing implications and ends with recommendation for further study.