The study involved the review of hospital discharge data from 657,877 patients who had been admitted to U.S. hospitals for carotid endarterectomy or coronary bypass artery surgery from 1993 to 2002.
The study found a 38 percent greater chance of death or postoperative stroke among patients with combined coronary bypass artery surgery and carotid endarterectomy compared to the risk of death or stroke from coronary artery bypass surgery alone. Carotid endarterectomy is the surgical removal of harmful plaque build-up in the carotid arteries, the main suppliers of blood to the brain.
The underlying rationales for combining both procedures are to protect the carotid artery from blockage, or stroke, during the heart bypass surgery and to lessen the risk of stroke by having just one procedure.
"The benefit of this combined procedure is controversial," said study author Richard M. Dubinsky, MD, MPH, with the University of Kansas Medical Center in Kansas City, Kansas, and a Fellow of the American Academy of Neurology. "Given this significant increase in postoperative stroke and death, a randomized clinical trial of the combined surgery is needed to determine the benefit, if any, compared to performing the operations in separate hospitalizations."
Dubinsky says the increase in death or stroke could be due to the degree of narrowing of carotid arteries, the patient's history of previous stroke, or other factors that could not be identified from the data. He says those are two areas that must be matched in any future clinical trials.
In addition, Dubinsky says this is the first study to show that being female was slightly protective against postoperative death or stroke after the combined procedures.
Stroke affects more than 700,000 people in the United States each year. A blockage of a blood vessel is responsible for about 80 percent of strokes.
Angela Babb | EurekAlert!
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...
Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.
A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
21.04.2017 | Physics and Astronomy
21.04.2017 | Health and Medicine
21.04.2017 | Physics and Astronomy