Results of exercise test may predict death in patients with coronary artery disease

Exercise capacity, as measured in terms of VO2max, is a powerful predictor of death in patients with coronary artery disease, not just patients with heart failure. That is the finding of Mayo Clinic research presented today at the American Heart Association's Scientific Sessions 2005 in Dallas.

VO2max is the maximum amount of oxygen a person can take in during exercise. In a VO2max study, a patient walks on a treadmill for about 5 to 15 minutes and breathes through a valve; the oxygen and carbon dioxide in the expired air are measured. Results are given in milliliters of oxygen per kilogram of body weight per minute (ml/kg/min).

"The best predictor of survival in cardiac patients is their capacity for exercise," says Thomas Allison, Ph.D., the lead author of the study, who is from Mayo Clinic in Rochester, Minn. "When we considered all of the measurable clinical variables -- such as whether they had bypass surgery or whether they have diabetes or high blood pressure -- the patient's capacity for exercise as measured by VO2max stood clear as the best predictor for 10-year survival."

In this study, the significance of low VO2max levels was examined in patients with coronary artery disease -- the top cause of death in the United States and often a precursor to a heart attack and heart failure.

A group of 282 patients, 17 percent of them women, underwent cardiopulmonary treadmill testing at the end of cardiac rehabilitation and were followed for an average of 9.8 years. The average age was 61 at the time of the test.

In the first two years there were few deaths, but after that mortality was significantly higher in patients with low VO2max. Fifty-five patients had a low VO2max (less than 18 ml/kg/min); at 10 years, almost half (42 percent) had died. Of the 227 patients who had a VO2max above or equal to 18 ml/kg/min, only 11.6 percent had died at the 10-year mark. Even after adjusting for age, sex and ventricular function, VO2ma

Contact: Traci Klein
507-284-5005, 507-284-251
Mayo Clinic

Page: 1 2

Related medicine news :

1. Results of largest ever genome scan for autism out
2. Timely treatment of heart attacks: Results from the AMI-QUEBEC Study
3. Results of hospital performance measures do not always reflect patient outcomes
4. Results good for HER-2 positive breast cancer patients using trastuzumab
5. Results of clipping and coiling of aneurysms are similar over time
6. Results with newer bladeless LASIK equivalent to standard microkeratome LASIK
7. Traditional Chinese exercises may increase efficacy of flu vaccine
8. Even low levels of weekly exercise drive down blood pressure
9. Some women benefit more from exercise when emphasis is on health, not appearance
10. Strengthening exercises may slow progression of ALS
11. Research shows aerobic exercise helps maintain muscle in elderly

Post Your Comments:

(Date:6/25/2016)... ... June 25, 2016 , ... First Choice Emergency Room , ... Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm facility. , ... our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical Director of First ...
(Date:6/25/2016)... , ... June 25, 2016 , ... Conventional wisdom preaches ... success. In terms of the latter, setting the bar too high can result in ... than just slow progress toward their goal. , Research from PsychTests.com ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Marcy was in a crisis. Her son ... lash out at his family verbally and physically. , “When something upset him, he couldn’t ... would use it. He would throw rocks at my other children and say he was ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA ... the Road To Recovery® program to drive cancer patients to and from their cancer ... ensure the highest quality of life and ongoing independence. Getting to and from ...
(Date:6/24/2016)... ... 24, 2016 , ... The Haute Beauty Network, affiliated with ... as a prominent plastic surgeon and the network’s newest partner. , Dr. ... handsome men, look naturally attractive. Plastic surgery should be invisible.” He stands by ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... -- Story Highlights: , ... health care industry is causing providers to review operating ... offers a suite of solutions for health care providers ... optimization: labor resource analysis, revenue cycle optimization and physician ... and better economics ...
(Date:6/24/2016)... June 24, 2016  Global Blood Therapeutics, Inc. (GBT) ... developing novel therapeutics for the treatment of grievous ... the closing of its previously announced underwritten public ... the public offering price of $18.75 per share. ... offered by GBT. GBT estimates net proceeds from ...
(Date:6/24/2016)... June 24, 2016 Research ... "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" ... In-Mold Electronics, Smart Skin, Structural Health ... Structural electronics involves electronic and/or electrical ... structures, replacing dumb structures such as vehicle bodies ...
Breaking Medicine Technology:
Cached News: