External Counterpulsation therapy is a non-invasive technique employing sequential inflation of three sets of lower extremity cuffs during diastole, with deflation at the onset of systole. Counterpulsation Therapy increases venous return, augments diastolic pressure and provides presystolic unloading. Counterpulsation provides benefits of decreased anginal frequency, improved exercise tolerance and improved stress myocardial perfusion in patients with chronic angina. It has been postulated from its similarities to the IABP that the hemodynamic effects of Counterpulsation result in collateral recruitment and/or development.
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