Canadian Medical Guide > Analytical, Diagnostic and Therapeutic Techniques and Equipment > Surgical Procedures, Operative > Assisted Circulation > Counterpulsation > Intra-Aortic Balloon Pumping Terms and Definitions

Intra-Aortic Balloon Pumping

Medical Definition:	Counterpulsation in which a pumping unit synchronized with the patient's electrocardiogram rapidly fills a balloon in the aorta with helium or carbon dioxide in early diastole and evacuates the balloon at the onset of systole. As the balloon inflates, it raises aortic diastolic pressure, and as it deflates, it lowers aortic systolic pressure. The result is a decrease in left ventricular work and increased myocardial and peripheral perfusion.
Guide Notes:	DF: IABP
Previously Indexed:	Assisted Circulation (1967-1976)

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