A computer interprets the patients ECG and provides timing signals that control the sequential inflation and deflation of pressure cuffs wrapped around the patients calves, thighs and buttocks. Each inflation cycle is timed to start and end during the resting phase of the patient’s heartbeat (diastole). As diastole begins, the cuffs inflate rapidly and sequentially from the calves to the buttocks, firmly compressing the patient’s vasculature. This has two immediate effects: firstly, a strong retrograde “counter pulsation” occurs in the arterial system, forcing fresh oxygenated blood back towards the heart and coronary arteries, and secondly, an increased volume of venous blood is returned to the heart under increased pressure. The combined effect of these two events is to increase the oxygen supply and perfusion pressure in the myocardium (Heart muscle) and a increase “pre-load” so that heart has a greater volume of blood to pump during the next systolic event. Next, as the patient’s heart nears the end of diastole and prepares for systole (ventricular contraction), the computer instructs the deflation valves to open so a vacuam can deflate the cuffs instantly. This action also provides therapeutic advantages by reducing the heart’s after-load. Since the vascular beds in the lower extremities are essentially empty, the resistance to blood flow is markedly reduced, thereby decreasing the amount of work that the heart must do to pump blood to these areas (reducing oxygen demand within the myocardium). As a result of these diastolic augmentation activities, the patient’s peak diastolic pressure is significantly increased, benefiting circulating in the heart muscle and in other organs as well. At the same time, the patients systolic pressure is reduced, to the general benefit of the vascular system. Clinical studies suggest that the increase in myocardial perfusion pressure stimulates the use of collateral vessels that are already present, but unused, there by allowing oxygenated blood to bypass ischemic areas in the heart.
Patient who may benefit from EECP Therapy :(Coronary Artery Diseases pt-CAD)
1. Patient who has block in Heart arteries but unsuitable for Angioplasty or Bypass Surgery.
2. Are considered inoperable or at high risk of operative/interventional complications.
3. Have associated diseases that increase the risk of operation eg. Diabetes, Heart failure, Lung disease, Kidney failure or previous Brain stroke etc.
4. Have Heart power less than 35% for previous Heart attack.
5. Are unwilling to undergo any invasive revascularization procedure.
6. Already done Angioplasty or Bypass Surgery but-again suffers from Heart pain (Angina).