Featured Research

from universities, journals, and other organizations

Cangrelor provides effective maintenance of platelet inhibition without major bleeding for patients who require bypass surgery, results show

Date:
November 9, 2011
Source:
Cardiovascular Research Foundation
Summary:
Data from the BRIDGE clinical trial demonstrate that intravenous use of the drug cangrelor was effective at maintaining platelet inhibition in patients on thienopyridines who required bypass surgery.

Data from the BRIDGE clinical trial demonstrate that intravenous use of the drug cangrelor was effective at maintaining platelet inhibition in patients on thienopyridines who required bypass surgery. Trial results were presented at the 23rd annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, sponsored by the Cardiovascular Research Foundation.

Related Articles


Thienopyridines are anti-platelet medications that work to prevent blood clotting and improve circulation. Though they are among the most widely prescribed medications, their use can be complicated by the unanticipated need for surgery. Despite increased risk of thrombosis, guidelines recommend discontinuing thienopyridines 5 -- 7 days prior to surgery to minimize bleeding.

In the BRIDGE trial, researchers sought to determine whether the investigational drug cangrelor could be used as a "bridge" between discontinuing thienopyridines and surgery.

BRIDGE is a prospective, randomized double-blind, placebo-controlled, multicenter trial in 210 patients with acute coronary syndrome (ACS) or treated with a coronary stent on a thienopyridine awaiting coronary artery bypass grafting (CABG) to receive either cangrelor or placebo after an initial open-label, dose-finding phase. After thienopyridines were stopped, patients were administered cangrelor or a placebo for at least 48 hours, which was then discontinued 1 -- 6 hours prior to surgery.

The primary efficacy endpoint of the trial was platelet reactivity (measured in P2Y12 Reaction Units [PRU]), assessed daily with the VerifyNowTM P2Y12 assay. The main safety endpoint was excessive CABG-related bleeding.

The dose of cangrelor determined in the open-label stage was 0.75 g/kg/min. In the randomized phase, a greater proportion of patients treated with cangrelor had low levels of platelet reactivity throughout the entire treatment period compared with placebo (primary endpoint, PRU<240: 98.8% vs. 19.0%; odds ratio: 353, 95% confidence interval: 45.6-2728, p<0.001). Excessive CABG-related bleeding occurred in 11.8% vs. 10.4% in the cangrelor and placebo groups, respectively (p=0.76). There were no significant differences in major bleeding prior to CABG, although minor bleeding was numerically higher with cangrelor.

"Results of the BRIDGE trial indicate that in patients on thienopyridines who undergo cardiac surgery, intravenous cangrelor provides effective maintenance of platelet inhibition with no apparent increase in major bleeding, despite numerically higher rates of minor bleeding prior to surgery, which however were mostly attributed to ecchymosis at the site of venipuncture. Larger patient samples are needed to more definitively assert the safety and effectiveness of cangrelor bridging therapy to surgery," said Dominick J. Angiolillo, MD, PhD, the lead investigator of the trial. Dr. Angiolillo is an Associate Professor of Medicine and Director of Cardiovascular Research at the University of Florida College of Medicine in Jacksonville, Florida.

The BRIDGE trial is funded by The Medicines Company.

Dr. Angiolillo reports receiving honoraria for lectures from Bristol Myers Squibb, Sanofi-Aventis, Eli Lilly Co., and Daiichi Sankyo, Inc.; honoraria for consulting/advisory board from Bristol Myers Squibb, Sanofi-Aventis, Eli Lilly Co., Daiichi Sankyo, Inc., The Medicines Company, Portola Pharmaceuticals, Novartis, Arena Pharmaceuticals, Accumetrics, Medicure, Evolva, and Abbott Vascular; and research grants (paid to institution) from GlaxoSmithKline, Otsuka, Accumetrics, Eli Lilly Co., Daiichi Sankyo, Inc., The Medicines Company, Portola Pharmaceuticals, Schering-Plough, AstraZeneca, Johnson & Johnson, Bristol-Myers Squibb and Sanofi-Aventis.


Story Source:

The above story is based on materials provided by Cardiovascular Research Foundation. Note: Materials may be edited for content and length.


Cite This Page:

Cardiovascular Research Foundation. "Cangrelor provides effective maintenance of platelet inhibition without major bleeding for patients who require bypass surgery, results show." ScienceDaily. ScienceDaily, 9 November 2011. <www.sciencedaily.com/releases/2011/11/111109194321.htm>.
Cardiovascular Research Foundation. (2011, November 9). Cangrelor provides effective maintenance of platelet inhibition without major bleeding for patients who require bypass surgery, results show. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2011/11/111109194321.htm
Cardiovascular Research Foundation. "Cangrelor provides effective maintenance of platelet inhibition without major bleeding for patients who require bypass surgery, results show." ScienceDaily. www.sciencedaily.com/releases/2011/11/111109194321.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins