Blood test offers swifter, safer diagnosis of sport brain injury

Colorado Avalanche forward Steve Moore was forced to quit hockey 10 years ago after the Canucks’ Todd Bertuzzi punched him, leaving him with a concussion and a fractured neck.

Raised levels of nerve cell protein a marker of concussion

Thomson Reuters Posted: Mar 14, 2014 8:37 AM ET Last Updated: Mar 14, 2014 8:39 AM ET

Swedish researchers say they have devised a blood test that could better diagnose sports-related brain injuries and prevent American football, rugby and ice hockey players returning to the field in danger.

In findings from a study of ice hockey players, the researchers said their method can show just an hour after a head injury how severe the concussion is, whether there is a risk of long-term symptoms, and when the player can return to the sport.

“In ice hockey and other contact sports, repeated concussions are common, where the brain has not finished healing after the first blow,” said Henrik Zetterberg of the Sahlgrenska Academy at the University of Gothenburg, who led the study.

“This kind of injury is particularly dangerous, but there have not been any methods for monitoring how a concussion in an athlete heals.”

A growing body of scientific evidence, much of it from studies of former American football players and boxers, suggests repeated head knocks such as in contact sports can cause chronic traumatic encephalopathy, a brain condition that can lead to loss of cognitive function, dementia, aggression and depression.

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While mild concussions don’t generally cause loss of consciousness, they can induce other symptoms such as dizziness, nausea, trouble concentrating, memory problems and headaches. Severe concussions can cause a loss of consciousness. Most concussions get better in days or weeks, but some patients can suffer symptoms more than a year after injury.

The National Football League in the United States agreed in August to pay $765 million US to settle a lawsuit brought by thousands of former players, many suffering from dementia and health problems. They accused the league of hiding the dangers of brain injury while profiting from the sport’s violence.

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“Concussions are a growing international problem,” said Zetterberg. “The stakes for the individual athlete are high, and the list of players forced to quit with life-long injury is getting ever longer.”

Zetterberg’s team examined all the players in the Swedish Hockey League and found that between September and December of the 2012/2013 season alone, 35 of 288 players had had a concussion. In three cases, it was so severe that the player was knocked unconscious.

For the study, which was published on Thursday in the journal JAMA Neurology, the players who had a concussion were asked to provide repeated blood samples, initially directly after the concussion and then also during the following days.

The results were compared with the pre-season samples from two full teams, and the scientists found that having raised levels of a nerve cell protein called tau in the blood was a marker of concussion.

By measuring tau levels in regular tests, the researchers could say how severe the concussion was just one hour after the injury, and could predict with a high level of certainty which players would have long-term symptoms and needed to rest longer.

Yelverton Tegner, a researcher at Lulea University of Technology and a team doctor for the Swedish national women’s football team, who also worked on the study, said the ultimate aim was “to have a working kit that can be used for diagnostics in hospitals, and perhaps also at rink-side or in stadiums”, for use immediately after a player is concussed.

Zetterberg said the same test could also be used in general emergency medical care to diagnose brain damage from concussions, regardless of how they happened.

Brain stimulation may aid stroke recovery: study

Dr. Alexander Thiel, director of the stroke unit at the Jewish General Hospital in Montreal, is shown in a handout photo released on Thursday June 27, 2013. THE CANADIAN PRESS/HO-Isabelle Dube, Jewish General Hospital

TORONTO – An experimental procedure that stimulates the brain with electrical pulses through the skull may help people recover the ability to speak after suffering a stroke, researchers say.

Up to 30 per cent of stroke survivors are left with a condition called aphasia, in which they have difficulty understanding language, speaking, reading or writing.

In a small study, Canadian and German researchers tested the effects of transcranial magnetic stimulation, or TMS, on patients recovering from a stroke but left with different degrees of aphasia caused by the damage to their brains.

Twenty-four stroke patients were enrolled in the trial, with 13 getting TMS and 11 treated with a sham procedure. Following the sessions, participants were immediately given speech language therapy.

Patients received 20 minutes of TMS or sham stimulation followed by 45 minutes of speech and language therapy for 10 days, the authors report in the American Heart Association journal Stroke.

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Employers must help workers overcome mental health issues

Workplaces must find better ways to help employees overcome mental health issues.
(Alexander Raths/Getty Images/iStockphoto)

It’s a scenario many managers and human resources personnel understand all too well: John, a high-performing employee, experiences a life-changing event and gradually begins demonstrating behavioural and performance issues at work: outbursts of anger, an increased inability to focus, and a noticeable drop in the quality of his work.

John’s disposition is likely linked to a mental health condition, but his manager is unsure of how to offer support. As time passes, John grows more and more distant from the workplace. Eventually, John either goes on disability leave and never returns, or moves on to a new job where the cycle of behaviour begins again at a new company.

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Driver Medical Fitness Information for Medical Professionals

Ministry of Justice updated their website regarding Driver Medical Fitness.  Check out the website below for more information.

Driver Medical Fitness