Answers to your questions about Enhanced
External Counter Pulsation (EECP).
New Non-Invasive Therapy for Chronic Angina
A new non-invasive treatment for chronic refractory angina
not amenable to any further revascularization, either percutaneously
or surgically is now available in Wilmington, Delaware.
The treatment is called Enhanced External Counter Pulsation
(EECP). EECP uses sequential compression of the lower extremities
of the body to stimulate the formation of new blood vessels
in the heart. It is currently indicated for refractory
angina and it is anticipated that it will be indicated
for congestive heart failure in the near future.
EECP therapy has proven to be useful in the treatment of
chronic (stable) angina. Patients who undergo EECP report
fewer anginal attacks and the ability to resume physical
activity. Published studies have demonstrated relief from
angina pain and improvement in the oxygen-deprived areas
of the heart in approximately 78% of patients with stable
chronic angina. Most patients report a marked improvement
in their functional capacity, energy level and overall quality
of life.
The treatment uses fabric cuffs containing
inflatable plastic bladders fastened with Velcro around
the patient’s
calves, thighs and buttocks. The patient lies comfortably
on a cushioned table while the cuffs are fastened onto his
lower extremities. The cuffs are sequentially air-inflated
(first the calves, then the thighs and the buttocks) during
diastole, when the heart is momentarily at rest between beats.
This does not interfere with cardiac function at all. Compression
of the cuffs during diastole forces blood from the legs and
buttocks up to the heart, increasing the flow of blood through
the coronary arteries, which are severely blocked and helps
expand the arteries to increase blood flow to the heart muscle.
EECP therapy does not require any type
of anesthesia and generally feels like a vigorous massage.
The treatment consists of a one-hour session per day, five
days a week, for a total of seven weeks. Although the mechanisms
of action are not clearly defined, the prevailing theory
is that forcing blood flow at high pressure during diastole
in to the coronary arteries increases the formation of
new blood vessels (angiogenesis), recruits new collateral
vessels and may stimulate growth factors that improve relaxation
of the blood vessels. All these mechanisms collectively
result in new blood vessel growth around the blockages
in the patient’s arteries.
In effect, this creates a “natural bypass”. If
you have chronic angina and have maximized your medical therapy
and are not a candidate for further revascularization, EECP
therapy may be an appropriate treatment for you. You may
ask your cardiologist for evaluation to determine if you
are an EECP candidate.
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