Navigation Links
Standards for Measuring Narrowing of Carotid Arteries too Aggressive

Standards for the use of ultrasound as a screening tool to measure narrowing of the carotid artery may be too aggressive, resulting in some needless follow-up tests and procedures according to researchers at the University of Chicago Medical Center. Narrowing of the carotid can be a precursor to a stroke.

Hisham Bassiouny, MD, director of the non-invasive vascular lab and interim section chief of vascular surgery at the University of Chicago, presented the findings of a study today at the Society for Vascular Surgerys Annual Meeting in Baltimore.

These standards, used by the majority of vascular laboratories around the country since the early 1980s, were based on the use of angiography, a medical imaging technique in which an X-ray picture is taken to visualize the inner opening of blood filled structures.

The limitation with angiography is that you had to guess how far the outer wall of the artery was beyond the arterys channel to determine the precise degree of artery blockage, he says. That was a guess, an estimate. Based upon that subjective estimate, formulas were developed to look at the velocity of blood flow in the artery and determine how much narrowing existed. These formulas became the standard used to this day. However, imaging technology is much better today than when these standards were developed.

The researchers studied 74 patients with narrowing of the carotid arteries. They used ultrasound to assess the narrowing and compared the results from ultrasound to those found using CT angiography. Both techniques produced similar results, with nearly identical measures of the size of the channel inside the artery.

Further study of another 337 mild, moderate, and severely narrowed arteries, using high-resolution ultrasound techniques, looked at the diameter of the outer wall of the arteries. Standards were developed according to each individualized measurement. The results using the new standards indicated that blood flow was often better than the old standards would predict.

Previously, the researchers found that a peak systolic blood velocity of 125 centimeters per second indicated the artery was narrowed by at least 50 percent. Now, they think a peak systolic blood velocity of 155 centimeters per second indicates a 50 percent narrowing.

As a result, weve changed the standards in our vascular lab, says Bassiouny. We hope these new standards will be adopted everywhere. Such a move would save money and spare at least some patients from unnecessary procedures and tests.


Related medicine news :

1. Researchers Feel The Need For Standards Of Practice In Immunoglobulin Therapy
2. DMAA to Develop Disease Management Standards by December
3. Setting Standards: Benchmark Medical Tests to Gauge Accuracy of Medical Tests
4. Medical Colleges, Confident of Meeting Standards Before 90-days deadline
5. Cleanliness Standards Dropped In NHS Hospitals – Patient Report
6. International Food Standards Meet Set For Chiang Mai Bangkok
7. Government Warned Against Dilution of Medical Standards
8. Pepsi Offers to Work with CSE for Maintaining Stricter Standards
9. Three Scottish Hospitals Fail To Meet Cleanliness Standards: NHS
10. Consistent National Standards For Assessment Of Overseas Trained Doctors A Priority
11. Standards of Home Care for Elderly Needs Change
Post Your Comments:

(Date:11/24/2015)... Berkeley, California (PRWEB) , ... November 24, 2015 ... ... Brillouin Energy's LENR HHT Bolier Reactor System. Brillouin is the developer of renewable ... on controlled low energy nuclear reactions (“LENR”), announced today that its WET™ and ...
(Date:11/24/2015)... ... November 24, 2015 , ... American Family Care (AFC), the nation’s leading ... holiday pop-up clinic located in Metro Atlanta’s North Point Mall. The clinic is designed ... way. The location is scheduled to operate through Dec. 24. , Holiday Pop-Up Clinic ...
(Date:11/24/2015)... ... 2015 , ... Abington Hospital – Jefferson Health is pleased ... Surgery Facility for treating individuals living with morbid or extreme obesity. , Aetna ... its members to help them make informed decisions about their healthcare needs. In ...
(Date:11/24/2015)... ... 2015 , ... Bibliomotion is thrilled to announce the launch of ... Diversity by Nancy M. Schlichting, Chief Executive Officer of Henry Ford Health ... the needs of patients and their families, shaped my desire to improve the system ...
(Date:11/24/2015)... ... November 24, 2015 , ... Robert Yeager CEO ... . Throughout the past year there have been multiple breakthroughs and challenges as healthcare ... transition, PharmMD has enabled their customers and partners to stay ahead of the curve ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... Nov. 24, 2015 Teledyne DALSA , a ... sensing technology, will introduce its CMOS X-Ray detector for ... November 29 to December 3, at McCormick Place in ... for diagnostic and interventional imaging will be on display in ... of advanced CMOS X-Ray detectors is the industry benchmark ...
(Date:11/24/2015)... Pa. , Nov. 24, 2015  NuShield, Inc., an industry leader in LCD screen protection ... and stationary computer technology as part of their patient monitoring or electronic documentation system. ... ... ... A ...
(Date:11/24/2015)... 2015  BioPlast Manufacturing, a manufacturer of plastic ... diagnostic and biotech environments, announced today that it ... petri dishes. This acquisition is aligned with BioPlast ... products that are designed and tested by scientists ... Bristol, Pennsylvania ...
Breaking Medicine Technology: