Heat-related deaths in middle, high school football players spikes in 2006
... loses its ability to regulate the heat. The heart beats faster to increase blood flow to the skin to aid in evaporation, leaving less blood in the heart and other muscles. Brain death begins around 106 degrees, but death from heat stroke can be gradual, taking three or four days while organs begin to fail...Stroke in nonvascular atrial fibrillation -- anti-coagulants better than anti-platelet therapy
...with atrial fibrillation (AF) have irregular heart beats and have a tendency to form blood clots in the upper chambers (atria) of their hearts. These clots can then travel to the brain, block vessels and cause a stroke. One way of reducing the risk of this occurring is to give drugs that limit the bloods a...Hungry for a Super Bowl victory?
...er Bowl ranks #1 in terms of home parties (it even beats New Year's Eve), and it ranks #2 in food consumption, according to the book, Mindless Eating (Bantam 2006). In 2004, Super Bowl partiers ate 4,000 tons of popcorn, 14,000 tons of chips and an estimated 3,200,000 pizzas. And according to a new st...Does endurance exercise promote life-threatening changes in athletes' hearts?
...led ventricular arrhythmia (VA) in which the heart beats at an abnormal rate and rhythm. Now, a new study has shown that most of the athletes with VA have dysfunctional right ventricles. The finding adds weight to the hypothesis that endurance sports might contribute to changes in the heart that lead to d...New treatments for epilepsy may benefit patients at University of Virginia
...at happens in a heart attack when the heart muscle beats wildly. "The idea behind the RNS is that a small electrical discharge, less than that of a battery across your thumb, will be enough to stop a seizure," Fountain said. UVa neurologists are also participating in a clinical trial of a deep brain stim...Imaging technique may prevent injury during ablation for atrial fibrillation
...g in an irregular heartbeat often greater than 300 beats per minute. AF has been shown to increase significantly the risk for congestive heart failure and stroke. ...HIV Science and Responsible Journalism Satellite Meeting
...-or-death stakes make HIV/AIDS one of the toughest beats for a journalist to cover. From San Francisco to South Africa, scientific facts and fringe theories compete for reporters'--and the public's--attention. Reporters strive for balance, but is balance always appropriate when the evidence backs one side?...Stroke risk should determine anti-clotting treatment
...s achieving a ventricular rate (pulse) of 60 to 80 beats per minute at rest and between 90 and 115 beats per minute during moderate exercise. Also new in the guidelines, catheter ablation -- a procedure ...Grueling four-day race becomes Stanford lab for cardiac experiments
... "I think it's amazing," said Ashley. "Your heart beats 3 billion times in a lifetime. In the absence of disease, we don't think of an 80- or 90-year-old's heart tiring." The results of the study, to be published in the Aug.1 issue of the Journal of the American College of Cardiology, not only show that...Study of obesity in prostate cancer screening uncovers new predictor of disease for overweight men
... mass index," Garzotto said. "This new risk factor beats all the prior predictors in a race and, importantly, it helps us provide appropriate care for the 66 percent of men in the United States who are overweight or obese."...Calorie restriction appears better than exercise at slowing primary aging
... subjects. Their hearts were able to relax between beats in a way similar to the hearts of younger people. This latest study targeted another marker of primary aging. The thyroid gland produces critical hormones that play an indispensable role in cell growth and development as well as in lipid and carbohyd...For one Stanford doctor, the beat goes on during open-heart surgery
...d loss, stroke, kidney failure and irregular heart beats were considered, beating-heart surgery had a definite advantage over conventional bypass. "Beating-heart surgery is an advance in cardiac surgery because it provides a better result for patients," said John Puskas, chief of cardiothoracic surgery at ...Patients with severe sleep-disordered breathing have high odds of abnormal heart rhythms
... defined by abnormally rapid heart beats--over 100 beats per minute in an adult. "Consistent with the study design, no sex or race differences were observed between groups," said Dr. Mehra. "However, the SDB group was modestly older and had a higher body mass index than the control patients." She added th...Study: Paramedics save more lives when they don't follow the rules
...a condition in which the heart quivers rather than beats but can be shocked back into normal beat with a defibrillator. In contrast, the survival rate was only 20 percent in the 3 years before, when the standard CPR protocol was used. The current study, which involved 125 patients, reports the experiences...... subjects. Their hearts were able to relax between beats in a way similar to the hearts of younger people. The team from the Pennington Biomedical Research Center reports in the April 5 issue of the Journal of the American Medical Association on a six-month study of men and women between 25 and 50 who were...Making multiple lifestyle changes is beneficial, achievable in lowering high blood pressure
...p without DASH. Greater improvement in fitness: 2 beats per minute lower heart rate for the DASH group and 1 beat per minute lower heart rate for those without DASH. (The greater the reduction in heart rate, the greater the improvement in fitness.) Greater sodium reduction: 354 milligrams for those on t...Method for avoiding sudden death
...s involves a very rapid arrhythmia - more than 400 beats a minute. The heart cannot pump blood and it stops. Given a case of sudden death, it is vital to administer treatment immediately. If it is not administered within ten minutes, death is certain. On the other hand, if the treatment takes place withi...People who restrict calories have 'younger' hearts
...trol subjects; that is, the hearts relaxed between beats in a way that is similar to the hearts of younger people. In addition, several heart disease risk factors and inflammatory markers--blood pressure, C-reactive protein, tumor necrosis factor-alpha (TNF-), and transforming growth factor-beta1 (TGF-1)--...Caloric restriction appears to prevent primary aging in the heart
... subjects. Their hearts were able to relax between beats in a way similar to the hearts in younger people. "This is the first study to demonstrate that long-term calorie restriction with optimal nutrition has cardiac-specific effects that ameliorate age-associated declines in heart function," says principa...Connective tissue cells from lungs fused with heart muscle to form biological pacemaker
...eart rates, from one beat every two seconds to two beats per second. "This shows that the fused cells can fire spontaneously, the hallmark of pacing cells." While electronic pacemakers work, they have limitations, notes Cho. The device's battery must be changed periodically, a permanent catheter tube mus...