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:
*Name:
*Comment:
*Email:


(Date:4/27/2017)... ... April 27, 2017 , ... Goodcents Deli Fresh Subs ... the Lincoln, Neb. area this year. , The first new location will open ... location will open at 84th and Northern Lights Drive this fall. And the third ...
(Date:4/27/2017)... ... ... Are you investing in the safety of your friends and family? Each year, ... most of us assume this type of accident will never happen to us, the ... the time to learn how to respond effectively or prevent these accidents from occurring ...
(Date:4/26/2017)... ... 26, 2017 , ... Jump Technologies, Inc., an innovative software ... completed a round of funding to accelerate its growth strategies. The $3.5 million ... is a growth equity firm focused on investments in healthcare and technology companies. ...
(Date:4/26/2017)... ... April 26, 2017 , ... Journal of Oral Implantology – Tooth ... to overall dental health, including complications with speech, eating, and overcompensation of mouth due ... replace lost teeth. As the number of tooth replacements increase, it is imperative to ...
(Date:4/26/2017)... ... April 26, 2017 , ... CareSet Labs ... of e-prescribing as measured in Part D Medicare data. The dataset, called PaPR ... either using e-prescribing, faxes or paper. The PaPR (pronounced "paper") data set ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... -- Research and Markets has announced the ... Prospects: Addressing Production Complexities Through Risk Management and Quality ... ... and Market Prospects: Overcoming Production Complexities Through Risk Management ... the current trends in the global biosimilars market, with ...
(Date:4/20/2017)... Inc ., a digital health company focused on modernizing and ... $25 million in Series B funding led by Qiming US ... Seattle that is part of a broader family ... included participation from SR One , who led ZappRx,s ... Google Ventures). As part of the financing, Mark McDade ...
(Date:4/20/2017)... , April 20, 2017 NeuroVive Pharmaceutical ... today announced positive preclinical results demonstrating anti-fibrotic ... for non-alcoholic steatohepatitis (NASH), in an additional ... NV556 has previously shown similar anti-fibrotic ... Today, NeuroVive,s scientists present novel data demonstrating ...
Breaking Medicine Technology: