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T03-71
October
29, 2003
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Consumer Inquiries: 888-INFO-FDA
FDA Advises Physicians of Adverse Events Associated
with Cordis Cypher Coronary Stents
The Food and Drug Administration (FDA)
today informed physicians about adverse events associated with Cordis Corporations
Cypher Coronary Stent. FDA posted the information on its web site as a public
health notification to physicians.
FDA has received
more than 290 reports of thrombosis (clotting) occurring one to 30 days after
the procedure to implant the device. In more than 60 of these reports, use of
the device was associated with the death of the patient; in the remainder, the
device was associated with injury requiring medical or surgical intervention.
FDA
has also received more than 50 reports, including some deaths, that Cordis considers
to be possible hypersensitivity reactions. The symptoms include: pain, rash, respiratory
alterations, hives, itching, fever, and blood pressure changes.
Hundreds
of thousands of patients have been successfully treated with the Cypher stent.
FDA does not have enough information to determine whether the incidents of thrombosis
and hypersensitivity reaction with the Cypher stent differs from those experienced
with bare metal stents.
FDA approved the Cypher stent
in April 2003 for patients undergoing angioplasty procedures to open clogged coronary
arteries. The stent, a cylindrical metal mesh, is designed to keep the arteries
from re-clogging after the procedure. It is coated with a thin polymer containing
the drug sirolimus that is slowly released into the patient and is intended to
reduce the rate of re-blockage that occurs with other stents.
The
cause of these adverse events has not yet been determined. FDA and Cordis are
working quickly to gather as much information as possible about the circumstances
surrounding these events. FDA is also working with the regulatory bodies of other
countries to get more information about foreign experience with the Cypher stent.
Until
FDA gets to the root of the problems, the agency is encouraging doctors to follow
the instructions for use of the stent, and urging them to be vigilant for any
patient symptom that may be attributed to hypersensitivity.
Patients
who have received this stent should continue to follow their regularly scheduled
plan for follow-up appointments with their doctor.
As
a condition of approval, FDA is requiring Cordis to conduct a 2000-patient post-approval
study and continue evaluating patients from ongoing clinical trials to assess
the long-term safety and effectiveness of the stent and to look for rare adverse
events that may result from use of the product.
Doctors
and patients who have experienced an adverse event related to the stent are encouraged
to report the incident to the FDA. Reports may be made one of four ways: online
at http://www.accessdata.fda.gov/scripts/medwatch/; by telephone at 1-800-FDA-1088;
by fax at 1-800-FDA-0178; or by mail to MedWatch, FDA, HF-2, 5600 Fishers Lane,
Rockville, Md. 20857.
The notification to physicians
is available at http://www.fda.gov/cdrh/safety/cypher.html.

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