new YORK (Reuters Health) – patients who is them
performs a bypass to improve flow blood to the heart are
more likely to have an accident stroke (CVA) that
those to which is placed a stent.
A team reviewed 19 studies on a total of almost 11,000
patients with clogged arteries and that, at random, was made them
a bypass or placed them a stent to reopen vessels
obstructed.
data showed that patients with a bypass were
three times more likely to suffer an LCA while they recovering
from surgery than the group treated with stents.
“some patients with coronary artery disease in which
angioplasty (to place a stent) is clearly the focus
suitable and less invasive”, believed Dr. Gregg Stone, of the
< p> Centro Médico de Columbia University, Nueva York. “Hay otros
pacientes en los (la lesión) que es tan grande que la mejor
indicación es la cirugÃa”, agregó.
Pero nl por lo menos la mitad de los pacientes cardÃacos,
según dijo Stone, el bypass y un stent zoon Options válidas. Y
nl esos casos, el riesgo de sufrir un ACV es un factor
importante para tener en cuenta.
“Es algo que influirÃa en la decisión del médico y del
Natascha”, indicó. “La mayorÃa de los pacientes preferirÃan
morir een tener un ACV”, afirmó.
La Asociación Estadounidense del Corazón estima que
anualmente 800.000 estadounidenses sufren un ACV.
19 Los estudios analizados incluÃan pacientes de 60 años; la
Ik eran hombres.
Al mes de la intervención, 12 de cada 1,000 pacientes
tratados con un rondweg tuvieron un ACV, comparado con tres o
< p> four of every 1,000 treated with a stent.
This means that cardiac patients 155 is them
would have to place a stent instead of making them a bypass for
prevent an LCA, Stone team publishes in Journal of the
American College of Cardiology.
per year, the last control made, there had been more
LCA in the treated group with a bypass than in patients
treated with stents.
Stone and other researchers could not consider the
possible effects of risk factors traditional of the
LCA, as diabetes. nor had information of how many
studies patients were killed by the LCA.
still, Stone believed than the variations of pressure
during the bypass and a clamp placed in vessels
that surround the heart could increase the possibility that is
obstruct the blood flow to the brain.
in general, said, “the manipulation of the heart is greater”
during surgery bypass.
Stone and one of his co-authors stated offer services of
consulting and other economic relations with companies that
produce stents, Medtronic and Boston Scientific.
the period of increased risk of an LCA after a
bypass are 24 or 48 hours after the surgery, according to
said Dr. Farzan Filsoufi, surgeon Heart Center
medical Mount Sinai, New York, and who did not participate in the study.
then, if patients have an LCA, he explained that it would be more
a matter of risk factors than of the surgery.
added the update of technology allowed that
researchers decreased the risk in recent years of
have een LCA tijdens of onmiddellijk na een rondweg.
zei dat het risico nog steeds hoog is bij het plaatsen van een stent,
Hoewel die ervoor om de stent kiezen patiënten zijn meer vatbaar voor
moet een tweede stent. “Dat is eigenlijk het verschil,”
hij samengevat Filsoufi.
Bron: Journal van de American College of Cardiology,
online 20 augustus 2012