ts remained on aspirin while 71.5 percent
continued with antiplatelet therapy. At two years (ARRIVE 1
patients only), 92.2 percent were on aspirin and 58.5 percent
remained on antiplatelet therapy. Rates of stent thrombosis in the
pooled patient set were 1.0 percent from 0-30 days, 0.3 percent
from 31-180 days, and 0.4 percent from six months to one year.
Stent thrombosis for ARRIVE 1 patients from one to two years (very
late stent thrombosis or VLST) was 0.7 percent. These rates are
similar to findings of previous studies and align well with patient
and lesion risk profiles.
The analysis showed that discontinuation of antiplatelet therapy
before six months is a significant predictor of stent thrombosis at
both one and two years. Information available from 13 of 16 VLST
patients showed that 30.8 percent of these patients had
discontinued dual antiplatelet therapy within seven days of a VLST
event. Other statistically significant predictors of stent
thrombosis up to one year include several lesion characteristics,
including long lesions, multiple stents, calcified lesions and
small vessels, as well as patient-related factors such as smoking
and congestive heart failure. Significant stent thrombosis
predictors from one to two years consist of more biologic factors,
including failed brachytherapy, chronic total occlusions, prior
myocardial infarction and age.
"The ARRIVE data indicate that antiplatelet therapy is an
important factor relating to the occurrence of stent thrombosis in
DES patients," said Dr. Dobies, Director, Genesys Heart Institute,
Grand Blanc, Michigan. "Other significant predictors change from
one to two years, suggesting differences in pathophysiology that
may require additional study."
"Our extensive ARRIVE registries provide valuable insight into
the key predictors for stent thrombosis in real-world DES use,"
said Paul LaViolette, Chief Operating Officer of Boston Scientific.
"Determination of baseline predictors may help ident
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Page: 1 2 3 4 Related medicine technology :1.
Two-Year Patient Registry Results Support Safety and Efficacy of
Cypher Sirolimus-Eluting Coronary Stent in Real World Uses2.
REACH Registry Demonstrates That Multiple Arterial Disease
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Genetic Analysis Systems Enter the Clinical Mainstream4.
Blood Gas Analysis: The Pros and Cons of Point-Of-Care Testing5.
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American Society for Reproductive Medicine Journal6.
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Subgroup Analysis of Diabetic Patients With Multivessel Coronary
Disease