BOSTON, MAPercutaneous coronary intervention (PCI), also known as coronary angioplasty or angioplasty, is a procedure used to treat acute coronary syndromes. PCI involves opening a blocked blood vessel by threading and inflating a balloon-tipped tube into the vessel. Sometimes a stent is also inserted to keep the blood vessel open.
While undergoing PCI treatment, doctors usually give patients medicine to prevent complications that may occur from the procedure.
In a new study by researchers at Brigham and Women's Hospital (BWH), types and timing of cardiovascular disease and heart attack (CVD/MI) complications were tracked in patients undergoing PCI after an acute coronary syndrome and taking medications to prevent these complications.
The study is being presented at the American College of Cardiology 2012 Annual Scientific Session, March 24 to 26 in Chicago.
Utilizing patients from the TRITON-TIMI 38 study, researchers examined 12,844 patients who had at least one stent and were randomized to receive either the anti-blood clotting drugs prasugrel (Effient) or clopidogrel (Plavix). These drugs work by blocking activation of platelets (a component in blood involved in clotting).
The researchers observed the patients over a median follow-up of 14.5 months.
Researchers classified CVD/MI events under three categories: stent thrombosis (when a blood clot forms in the stent), procedural-related (in the setting of PCI or bypass surgery), or spontaneous (not related to stents nor procedures, but indicating a thrombosis in a different artery than the one that caused the first acute coronary syndrome event).
There were 1,306 CVD/MI events. 186 (14 percent) were stent thrombosis-related, 606 (46 percent) were procedural-related, and 514 (40 percent) were spontaneous.
Of the 1,306 events, 846 (65 percent) occurred within the first 30 days after the PCI. Of these 846 events, the most common were
|Contact: Marjorie Montemayor-Quellenberg|
Brigham and Women's Hospital