What does it mean to have a head concussion? Much has been written in recent years about the short- and long-term consequences of concussions sustained in sports, combat, and accidents. However, there appear to be no steadfast rules guiding the definition of concussion: the characteristics associated with this type of traumatic head injury have shifted over time and across medical disciplines. Within the context of a larger longitudinal investigation of the biomechanical factors in play that correlate with concussions in collegiate helmeted contact sports, researchers in New England and Virginia used data they obtained to investigate which signs, symptoms, and clinical histories were used by athletic trainers to define concussion in individual players. The investigators found that a heterogeneous collection of acute clinical characteristics currently exists for those events diagnosed as concussion in college athletes engaged in contact sports. Together with her colleagues, Dr. Duhaime, Director of Pediatric Neurosurgery and of Neurotrauma and Intensive Care in the Neurosurgical Service of Massachusetts General Hospital, examined concussions diagnosed in athletes participating in helmeted contact sports (football and ice hockey) at three universities: Dartmouth, Brown, and Virginia Tech. Both male and female athletes participated in the study. The students' helmets were outfitted with Head Impact Telemetry (HIT) System™ technology to record and measure peak linear and angular acceleration of impacts. The helmets were worn during practice sessions and games throughout two to four seasons. The investigators did not attempt to influence how trainers and team medical personnel defined concussion operationally, but instead relied on the clinical characteristics deemed indicative of concussion by the universities' athletic departments. More than 486,000 head impacts were recorded in 450 athletes, and concussion was diagnosed in 44 of these athletes (48 concussions) by team medical staff. Unlike concussions more often diagnosed in emergency departments, where a single, identified contact event leads to a loss of consciousness or other clear alteration in consciousness, most diagnoses in this sports setting were based on self-reports by athletes, and only a few were based on changes in athletes' clinical conditions that were observed by others. Thirty-one concussions could be directly associated with a specific impact, whereas a relationship with a specific impact could not be verified in the other cases of concussion. Only half of the athletes noted symptoms immediately after a contact event; in many athletes, the onset of symptoms was delayed. The most common reported symptoms were mental clouding, headache, and dizziness; only one case involved a loss of consciousness. The diagnosis of concussion by trainers often occurred in an even more delayed fashion: the diagnosis was made immediately after the event in 6 cases and at a later time in the other cases (median 17 hours postinjury). In general, the mean peak linear and angular accelerations for specific impact events that could be directly linked to concussions tended be in the high percentiles for the sports examined; however, there was considerable variability in the ranges of these measurements (mean peak linear acceleration 86.1 ± 42.6 g [range 16.5.9 g], mean peak angular acceleration 3620 ± 2,166 rads/sec2 [range 183,589 rads/sec2]). The variety of signs and symptoms, the imprecise timing of symptom appearance and relationship to a specific contact event, the lack of externally observed findings, and the broad ranges of the linear and angular accelerations of the impacts that coalesce in a diagnosis of concussion in college sports make it difficult to identify predictors of acute, intermediate, and long-term risks of adverse consequences resulting from sports-related head impacts. By describing the heterogeneity inherent in diagnoses of concussion as a "concussion spectrum," the authors point out the need for renewed efforts to determine which factors -- clinical, mechanical, genetic, or others -- influence outcomes in patients with single as well as repeated head impacts. The authors point out that while a clinical diagnosis is important to protect players from additional and potentially more serious consequences, it is also possible that athletes who do not receive the diagnosis of "concussion" may be at similar risk. Likewise, it is possible that some players who receive a diagnosis of concussion do not fall into a high-risk category for specific consequences. The authors note that there is still much to be learned, and that the terminology in use can sometimes oversimplify a more complex set of processes that still need to be teased apart. In their response to an accompanying editorial, they state, "By carefully characterizing exactly what we are talking about and by continued investigation, which will take more time ... , neurosurgeons and others will be best positioned to offer effective treatments and to advocate knowledgeably for appropriate injury-prevention strategies." Source: ScienceDaily

Coy Wire was a team captain for the Buffalo Bills (2002-2007) and the Atlanta Falcons (2008-2011) during his nine years in the NFL. An All-American Honors athlete at Stanford University, Coy was the first player to lead the Cardinal in both rushing and tackles. He was a recipient of the NFL’s Ed Block Courage Award. Q: What would you tell athletes about concussions? The NFL is in a state of evolution and recent changes will only make it safer for younger athletes. The league and the NFLPA (National Football League Players’ Association) have made huge strides to address the concussion issue, while maintaining the excitement of the game for both fans and players. It’s important that all athletes remember that you only get one brain and as we learn more about the long-term and adverse effects of contact sports and repetitive head injury, we know that smaller hits over the course of a career- even a high school career- can accumulate. Learn to recognize the symptoms of head trauma. You can have headaches or you might be slightly dizzy …these are all bearable and many athletes mask these symptoms by taking a Tylenol and then they go out and play again. But a concussion is not an ankle or shoulder injury…later in life you can have surgery on that ankle or have knee replacement surgery but you only get one brain. You can’t get a brain replacement. If you mask head trauma you can be risking increased problems in the future for Alzheimer’s or dementia. Head trauma has to be looked at very differently. Yes, in a way it’s a body part like a shoulder, but your brain must be treated very differently. You can ice and elevate an ankle but can’t do that with your brain. Real damage may show up later in life …and it’s not just football, it can happen in any sport. We used to look at toughness and playing through injuries as a badge of honor. That you were tough both mentally and physically and that continuing to play while hurt brought you the respect of your peers. But we need to change the culture now, and that starts with you. You need to believe that it’s OK to miss a game or a week or longer. If you do have to sit out, it means you were playing hard and you took one for the team. You shouldn’t feel ashamed. And if you care about your friends and your teammates, keep them from harm.https:// If you see a friend of yours doing something to hurt themselves, like playing with a concussion, step up and help them. You’re doing them a huge injustice by allowing them to continue to play. You are your brother’s keeper. Become a hero in their life and help them realize what they probably know deep down inside anyway. Someday they’ll look back and know what you did for them, and they’ll respect you more, later in their lives. Be a leader and help change the game. Help create a new norm. Coy Wire is the author of Change Your Mind; 10 Unconventional Secrets to Retrain Your Brain; March 2012. He is an inspirational speaker and mind coach. For more information contact him at https://www.coywire.com/

SEQUIM, Wash. -- Battle-tested and a little weary from last fall’s high school football season, Travis Anderson, an experienced EMT and paramedic John Riley, understand the nuances of concussions. Athletes who — if they are conscious – say they are ‘fine,’ coaches who may not be sure an athlete needs medical attention, and parents told by ER staff that rest is the prescription for recovery, trying to make sense of the mountain of hospital medical bills. They’ve seen it all, and it’s not easy. First responders like Anderson and Riley from Clallam County Fire District #3 in Sequim, Wash., are a luxury for school districts around the country. Part of a crew made up of paid staff and volunteers, they wait in the corners until given the signal by a coach or referee, or a player goes down and stays there. Like other on-field personnel they can’t see every impact and don’t always know if an athlete is deteriorating on the bench after a big hit. They depend on an educated coaching staff and fellow teammates for their cues. Anderson said,”We’d like to be called sooner rather than later. If there’s any question, especially with a suspected concussion, call us.” Too little care Only about 42 percent of high schools nationally employ athletic trainers, a dismal number in the eyes of many concussion experts who continue to advise against any school district or private organization offering contact sports without proper sideline medical care. Given the budget crises facing many school districts, it is not surprising so few heed this advice. But the challenges in rural areas are even greater. Long distances separate football fields from hospitals and fire stations can serve several high schools. Resources are simply too lean. Many sports-related concussions “Our fire department provides sideline staff for high school football games, and as many junior varsity games as we can. We consider it part of our community service effort and quite frankly, we feel strongly about protecting our student-athletes and their futures,” said District #3’s Fire Chief, Steve Vogel. His first responders have been on the sidelines at Sequim School District's games since 1982. Chief Vogel’s staff has a long history dealing with sports concussions. Former Sequim football player Adrien Gault suffered a catastrophic brain injury during a game in 2006 and was airlifted to a Seattle trauma center where doctors gave him a four-percent chance of survival. He continues to work through his recovery. This past fall, a Sequim student suffered a brain aneurysm during a Friday afternoon PE class and died a few days later. That same Friday there were six significant concussions on the football field a few hundred yards away, said a well-informed source, turning the field into a war zone. Fire District #3 was there for it all. “There were more concussions during that one game than I’ve seen in my entire career, including my time as a running back in high school,” said Anderson. “It was a rarity.” Neither he nor Riley, who played tight end in high school remember suffering concussions during their football careers. They believe they’re seeing so many due to increased awareness trickling down from the NFL. Anderson said, “I think the attention on the concussion issue in the NFL is having an affect on all levels of the game, all the way down to the youngest players.” Emergency Medical Services for Children (EMSC) Guidelines and training for first responders come in the form of online education modules and concussion-related drills practiced several times a year. Soon-to-be-released state protocols developed by emergency room physicians, critical care nurses, EMTs, and others who make up the state committee of the federal Emergency Medical Services for Children program include a sports-concussion guide for first responders. Upon distribution, this document will provide a handy reference for those who attend youth and high school athletic events. “The Emergency Medical Services for Children (EMSC) program works to ensure proper pediatric care is available on ambulances and in hospital emergency departments nationwide,” said Ian Weston, Co-Director of the EMSC program headquartered in suburban Wash. D.C. “Emergency care providers are integral in ensuring our children get the right care when it counts.” When to call 911 Concussion symptoms can be subtle and may not appear right away, leaving room for mistakes to be made if athletes are not properly monitored when a concussion is suspected. The following are symptoms that require a call for emergency evaluation: •headaches that worsen •seizures •neck pain •very drowsy, can't be awakened •repeated vomiting •increasing confusion or irritability •weakness, numbness in arms and legs •unable to recognize people/places, less responsive than usual For more information see Should we call 911?, signs and symptoms Photo: (L) John Riley (firefighter/paramedic); (R) Travis Anderson (firefighter/EMT) Questions/comments? contact Jean Rickerson at jean@SportsConcussions.org

MINNEAPOLIS – A new study suggests that head impacts experienced during contact sports such as football and hockey may worsen some college athletes’ ability to acquire new information. The research is published in the May 16, 2012, online issue of Neurology®, the medical journal of the American Academy of Neurology. The study involved college athletes at three Division I schools and compared 214 athletes in contact sports to 45 athletes in non-contact sports such as track, crew and Nordic skiing at the beginning and at the end of their seasons. The contact sport athletes wore special helmets that recorded the acceleration speed and other data at the time of any head impact. The contact sport athletes experienced an average of 469 head impacts during the season. Athletes were not included in the study if they were diagnosed with a concussion during the season. All of the athletes took tests of thinking and memory skills before and after the season. A total of 45 contact sport athletes and 55 non-contact sport athletes from one of the schools also took an additional set of tests of concentration, working memory and other skills. “The good news is that overall there were few differences in the test results between the athletes in contact sports and the athletes in non-contact sports,” said study author Thomas W. McAllister, MD, of The Geisel School of Medicine at Dartmouth in Lebanon, N.H. “But we did find that a higher percentage of the contact sport athletes had lower scores than would have been predicted after the season on a measure of new learning than the non-contact sport athletes.” A total of 22 percent of the contact sport athletes performed worse than expected on the test of new learning, compared to four percent of the non-contact sport athletes. McAllister noted that the study did not find differences in test results between the two groups of athletes at the beginning of the season, suggesting that the cumulative head impacts that contact athletes had incurred over many previous seasons did not result in reduced thinking and memory skills in the overall group. “These results are somewhat reassuring, given the recent heightened concern about the potential negative effects of these sports,” he said. “Nevertheless, the findings do suggest that repetitive head impacts may have a negative effect on some athletes.” McAllister said it’s possible that some people may be genetically more sensitive to head impacts. The study was supported by the National Institutes of Health and the National Operating Committee on Standards for Athletic Equipment. Source: American Academy of Neurology -- May 16, 2012 Questions/comments? contact Jean Rickerson at Jean@SportsConcussions.org Photo courtesy of JamieLWilliams (c)2006 CreativeCommons.com

The Dynavision D2 ™ is an FDA cleared medical device with a long history concerning sports performance enhancement and an even longer history concerning neuro visual rehabilitation of stroke and brain injured patients. Physical medicine rehabilitation practitioners have used it to train brain injured patients to improve hand eye coordination since the 1980s. With a pedigree from the neuroscience community concerning rehab and from the sports community for improving performance it was a logical fit that the D2 ™ be applied to the management of the athlete with a concussion. The Dynavision D2 ™ is a light board with 64 lights mounted in a board along with a small screen. The primary task is to hit the red or green lights. It assesses speed and coordination. When the computer screen and lights are used together there are numerous tasks the athlete can be asked to do. Several universities and professional sports organizations have adopted the Dynavision D2 ™ as part of the concussion management program, and for good reason. The Dynavision D2 ™ can be used as part of baseline testing. The results of the baseline tests are used for comparisons should a concussion occur. These same athletes may also train their eye hand coordination using the Dynavision D2 ™ for performance enhancement. This means the device is familiar to them and true baseline and performance parameters can be obtained. After a concussion, the Dynavision D2 ™ can be used as part of a traditional neuro cognitive examination and monitoring program. The baseline Dynavision D2 ™ results can be compared to repeat tests to see if deficits are present. Further, programs designed to assess multiple brain cognitive parameters can be performed in just a few minutes. The three tests assess: eye-hand coordination while multi-tasking, memory and cognition, cognition and executive functions. Observing the subject and noting their scores allows for an assessment of their concussion status. One of the strengths of the Dynavision D2 ™ is that it has an established cadre of programs that anyone can use. These programs can be used for rehab, prehab and diagnostics. Plus it has a relatively intuitive program option that allows more experienced practitioners and ADT trained individuals to design their own programs to meet their needs. This means that the Dynavision is a highly flexible and adaptable platform. Every person who works with athletes, injured athletes and neuro patients knows that each person is different and unique; training and rehab methods need to be personalized. Fortunately the Dynavision allows us to customize the programs to address the needs of the patient. There are numerous anecdotes where a patient who expresses a deficit that he/she is having to a rehab person who can write and try a program to help that patient during that very rehab session. One of my patients at the concussion clinic in theUniversityofCincinnatiwas injured in a wind storm. During her baseline neuro exam, we utilized the tests mentioned above and additional tests based on her specific results. The D2 was able to demonstrate the patient was unable to multi-task, making numerous math errors on simple 1 digit additions. In addition, based on a general neuro exam, the patient exhibited deficiencies in ocular motor, memory and executive function. This patient specifically benefited from the D2 as part of her neuro exam because the D2 gave measurable, unbiased results. The results of the exam were utilized to incorporate D2 training into her rehab program to improve binocularity, reaction time, multi-tasking, and cognition skills. In my opinion, without using the D2, this patient’s rehab would not have been as successful and it could have been possible to overlook subtle deficiencies that D2’s measurable results are able to track. In the center of the Dynavision D2 ™ is a tachistoscope; or small computer screen. This screen is used in several of the evaluation and rehabilitation methods. It adds tremendous flexibility to the system because it can be used to add tasks to what the subject is required to do. With the tachistoscope the patient can now be required to do a hand-eye task as well as reading or other task from the screen. This allows for multitasking to be performed and adds to the flexibility and strength of the Dynavision D2 ™ as a tool to manage the concussion patient. Repeating the evaluations on the Dynavision D2 ™ can be used as part of quantitative monitoring of the subjects as they progress through concussion rehab. The Dynavision produces reliable numbers that reflect the subjects’ performance or highlights deficiencies. When the Dynavision D2 ™ is used as part of the rehab training it becomes a cornerstone in the patient’s care and the patient can see, based on their own results, how well they are doing. Rehabilitation methods can be tailored to the needs of the patient and with many years of experience from the stroke and brain injury literature there are numerous options for the Dynavision D2 ™ to aid in a concussion rehabilitation program. About the Authors: Dr. Clark is a certified athletic trainer, professor of neurology and member of the concussion management team in the University of Cincinnati. He is an expert in complications post acquired brain injury and has published several texts and over 100 scientific articles. Mrs. Umberg is a former concussion patient and the patient referred to in this Case Study. Having used Dynavision as part of her rehab program she has since become a patient advocate and team member in the concussion management team in the University of Cincinnati and Dynavision Trainer. Disclaimer; the statements made are not screened or approved by the FDA. Source: Joseph F. Clark and Jennifer A. Umberg Department of Neurology, University of Cincinnati, Cincinnati Ohio; 45267-0536. Corresponding author: Joseph F. Clark, Professor of Neurology, joseph.clark@uc.edu.

As female participation in sports grows rapidly, there is a popular notion that there are gender-related differences in athletes' responses to sports-related concussion, and prior research has supported these gender discrepancies. However, a Vanderbilt University Medical Center study, conducted to review symptoms and neurocognitive findings in male and female high school soccer players, shows no gender-related differences. "There has been good data that suggests girls score worse on neurocognitive testing following a sports-related concussion. Our hypothesis was that a tightly-controlled study would replicate what others have shown previously," said Scott Zuckerman, M.D., a neurosurgery resident who conducted the study with colleagues at the Vanderbilt Sports Concussion Center. The researchers selected 40 male and 40 female concussed patients who were matched, as closely as possible, for age, medical/psychiatric history, years of education, lack of special education assistance, history of psychiatric treatment, number of prior concussions, timing of pre- and post-concussion testing, and sport (all engaged in soccer). This is the first study to control for type of sport played when looking a gender differences, Zuckerman said. "Prior studies have used mixed groups of athletes from a variety of sports. We suspected that since concussions vary from sport to sport (i.e., helmets vs. none, varying biomechanical forces, etc.), if the variable of sport was controlled, gender differences might disappear." The only significant gender-related difference they could identify was that female soccer players reported a greater number of symptoms post-concussion. There were no significant differences in post-concussion neurocognitive scores. "We were somewhat surprised and were not sure what to expect in such a tightly controlled population," Zuckerman said. "Our hypothesis was that females would experience greater levels of acute, post-concussive, neurocognitive impairment than males, fitting with what most of the prior literature says, but we found virtually no difference between males and females." Zuckerman said this is a significant finding for the treatment of sports-related concussion. "When we see any child after concussion, we don't want to make snap decisions based on gender. Gender may not be as big a modifying factor as previously thought." This study is the first from V-SCoRe, or Vanderbilt Sports Concussion Research. Collaborators include Allen Sills, M.D., Gary Solomon, Ph.D., Andrew Gregory, M.D., Alex Diamond, D.O., and Jonathan Forbes, M.D., and medical students Mitchell Odom and Young Lee. "This effort is just getting off the ground, and we're investigating many more modifying factors in concussion, including age, sleep, symptoms, prior history of attention deficit disorder," Zuckerman said. "Our goal is to create new knowledge in this area and help providers better understand when a young athlete can return to play safely." Story Source: The above story is reprinted from materials provided by Vanderbilt University Medical Center, via Newswise. Journal Reference: Scott Zuckerman et al. Response to acute concussive injury in soccer players: is gender a modifying factor? Clinical article. Journal of Neurosurgery: Pediatrics, 2012 DOI: 10.3071/2012.8.PEDS1239

President Obama's recent remarks regarding concussions in football reopened the discussion of the safety of the game just days before Super Bowl Sunday. In an interview appearing in the New Republic Obama says, "If I had a son, I'd think long and hard before I let him play football. And I think that those of us who love sports are going to have to wrestle with the fact that it will probably change gradually to try to reduce some of the violence." Leaders from sports-related organizations including pee-wee, high school, college and professional have worked for several years now to understand the injury, provide guidance to athletes and coaches, and fund research related to the effects of brain trauma. Changes have been broad and deep. NFL Commissioner Roger Goodell has surrounded himself with the most well-respected medical professionals in the concussion field, seeking their council. As co-chairmen of the NFL Head, Neck and Spine Committee, Drs. Richard Ellenbogen (chief of neurosurgery, Univ. of Washington) and Hunt Batjer (President of the Neurological Society of America) have assembled an impressive team, including senior adviser Dr. Robert Cantu, co-director Center for the Study of Traumatic Encephalopathy. Chronic traumatic encephalopathy, or CTE, is a degenerative brain disorder suspected to be associated with repetitive hits to the head. Previously only diagnosed post-mortem, evidence of the disease was recently found in five former NFL players who took part in a groundbreaking diagnostic study at UCLA. The committee is also actively involved in improving on-field recognition and assessment policies, helmet technology, and brain impact research. In 2011, the NFL dedicated over $100 million over the next decade to medical research, with the vast majority of those dollars committed to the science of concussions, their prevention and care. Concussions have always been a part of sports, and have never been limited to football. Soccer, volleyball, wrestling, lacrosse, bicycling, and yes, playground activities can all cause concussive injuries. Girls are at risk as much as boys. Seniors and soldiers suffer too. Change of this magnitude takes time. Those athletes who have paid the price through their individual suffering are heroes, having opened the door for the rest of us, exposing an issue whose time is due. Former NFL linebacker Junior Seau, who tragically took his own life in 2012 at age 43, was later diagnosed with CTE, which many believe contributed to his death. He and the other NFL, NHL and professional boxers who died at a young age and were later diagnosed with CTE, have commanded our attention. In 2006, Zachery Lystedt suffered a debilitating brain injury during a middle school football game at age 14, and now fights daily to escape his wheelchair. Zachery, with the help of Commissioner Goodell and the NFL, led us to develop legislation in almost every state helping to safeguard youth athletes from the effects of concussions. Zach's hero, Baltimore Ravens Ray Lewis will play in Sunday's Super Bowl. Zach and the estimated 111 million viewers will watch a safer game, one that is still evolving, striving to maintain the integrity of the contest while preserving the health of its players for the future. Thankfully, visionaries like Commissioner Goodell appear in the right place at the right time. Under his leadership the NFL has, and is, providing a road map and the necessary funding to investigate the questions and find solutions that will improve our understanding of risk as it applies to protecting our youth, preserving the competitive spirit, and honoring the bonds that bind us as teammates and fans. Photo courtesy: Creative Commons; copyright dcJohn 2004

As a new womens' lacrosse referee I initially had mixed feelings about the ongoing debate on the use of helmets in play. Listening to the discussion in referee training sessions that stressed the finesse of the game and the need of the referee to control or slow down play, verses the struggle I felt as a person having a medical degree and realizing the potential hazards of brain injuries, I tried to see both sides. Some people think that helmets will make the game more physical. But after my first official day as a referee standing on the sidelines watching my daughter’s middle school team begin their game, my beliefs became clear. Female lacrosse players need to wear helmets. During the first eight minutes of the game there were three injuries, one related to a child’s head and neck. This player had been checked from behind causing her neck to snap back. She then fell and hit her head on the turf. I witnessed every parent’s/referee’s/coach’s nightmare: a player down and seizing. To my dismay, this player returned to play in less than three weeks and went on to have another concussion and seizure. She is now barred from impact sports for the rest of her life. What I found out about my local school district surprised me and motivated me to try to educate parents and give people the best information possible. After speaking to the athletic trainers in my school district, I was made aware that high school students are given baseline concussion testing but younger players are not. We are now in the process of offering that testing to younger players. Also, while coaches can have in-person or online concussion training it seems that more could be done to help the coaches and parents become more informed about concussions. There are numerous issues that could explain the high incidence of concussions in women's lacrosse. One might be to consider the nutrition and health of girls playing the game today. Both men and women today are better nourished and physically stronger, faster and more powerful than the players of previous years. This has created a weight imbalance as some players can actually outweigh others by a large margin. The physics of combining speed and extra mass can lead to a dangerous combination. Equipment has also evolved to allow for lighter and faster sticks, causing unintended hits in some instances, I'm sure. Another factor is the increase in new players due to the popularity of the sport. Putting players of different skill levels in the same game can set up a difficult dynamic. It is important for players to be aware of their body position in space and reference to other players. This is a skill that comes with time and coaching. Coaching is another aspect of the game that helps teams work together better and control the speed of their game. Neck strengthening exercises can decrease the whiplash motion often caused by a hit to the cranial region. As for me, I have now completed my first season as a referee. I feel that helmets and proper body equipment in womens' lacrosse will make the game safer for everyone. My feeling is that there are too many factors that increase the potential for head injuries and we should mitigate them as best we can. While I realize helmets do not prevent concussions, I do believe they would be helpful to protect young women from unintended hits to the head. Dr. Lori McGowan is an Adjunct Professor of Biology at Harrisburg Area Community College in Harrisburg, Pennsylvania.

As the on-ice passion of the NHL playoff games intensifies so do the penalties, particularly for vicious hits to the head. Saturday's games resulted in three separate incidents that will highlight the league's commitment to cracking down on illegal hits that may, and often do, cause concussions. Brendan Shanahan, Senior Vice President, Player Safety and Operations held hearings on two of the three violations Sunday afternoon. The third is scheduled for Monday. The hits are reviewed on video and the suspensions are explained in great detail by Shanahan on the NHL network (see videos below). Shanahan suspended New York Rangers forward Carl Hagelin for an illegal hit that forced opponent Daniel Alfredsson's head into the glass. Alfredsson, the Senators captain, left the game for evaluation and his status for the rest of the playoffs is uncertain. On Monday the team announced he had suffered a concussion on the play. This is Hagelin's first major penalty. The Wall Street Journal reports that disciplinary action against Hagelin may increase if Alfredsson, who has a history of concussions, is unable to return to the series. A one-game suspension was also issued Sunday for Ottawa Senators defenseman Matt Carkner for continuing to pummel an "unwilling opponent," Rangers forward Brian Boyle, who was knocked to the ice after Carkner delivered two powerful blows to his head. Carkner continued to hit Boyle as he lay on the ice. Boyle did not return the punches. Carkner was classified as an "aggressor" under NHL rules and was assessed a minor penalty for instigating, a major penalty for fighting and a game misconduct. Blackhawks forward Andrew Shaw is scheduled for a hearing on Monday for a shoulder-to-head hit on Coyotes goalie Mike Smith that left him down on the ice writhing in pain. Shaw earned a charging major and game misconduct on the play. Smith remained in the game. Last Thursday, Vancouver Canucks forward Byron Bitz was suspended for two games for a vicious hit to the head on Los Angeles Kings forward Kyle Clifford the night before. Clifford's head was shoved into the glass causing him to miss at least one game. In addition to the suspension Bitz was assessed a major penalty for boarding and a game misconduct the night of the game. Carl Hagelin/ Daniel Alfredsson Matt Carkner/ Brian Boyle Byron Bitz/ Kyle Clifford Source: NHL Network Questions/comments? Contact Jean Rickerson at jean@SportsConcussions.org