PT Classroom - The Role of the Physical Therapist When Working With Patients With Post-Concussive Syndrome (Part 1)  ׀ by Lauren Hogan, PT, DPT, ATC

 

Lauren Hogan, PT, DPT, ATC, graduated with her Doctor of Physical Therapy degree from Marquette University in May of 2010. She also received her bachelor of science degree in athletic training from Marquette University in 2008. Lauren works as a physical therapist at Froedtert and The Medical College of Wisconsin in outpatient orthopedics and has a special interest in the treatment of post-concussive syndrome.

 

The Role of the Physical Therapist When Working With Patients With Post-Concussive Syndrome (Part 1)

Concussions (or mild traumatic brain injuries) have received considerable press due to the high prevalence in sport and the potential for long-term and often disabling symptoms. A concussion may occur when there is a direct impact either to the head or with a blow elsewhere in the body with forces that are transmitted to the head. The acute symptoms of a concussion are generally not the result of pathological or structural changes, and thus no abnormalities are seen on radiographs or other imaging (4). Instead, symptoms are due to microscopic axonal injury and a resultant “neurometabolic cascade” occurring within the brain (3). The normal ionic balance and energy metabolism are disrupted and the brain then requires increased energy to return to its normal state. Unfortunately, there is decreased cerebral blood flow and mitochondrial dysfunction post-injury, so less glucose is available in the brain (3). This energy supply-and-demand mismatch can cause concussion symptoms.

Concussion symptoms vary based on the patient and a list of common symptoms is found in the box below. Headaches are the most frequently reported symptom, followed by dizziness (3). The vast majority of concussions will resolve quickly, with 80-90% of patients experiencing symptom resolution after seven days (3). There is some concern that cognitive deficits may persist even after symptom resolution, which has been shown with neurophysiological testing. Further research continues to be done in this area to assure full resolution of symptoms prior to return to activity (3).

 

Symptoms and Symptoms of a Concussion (3)
Physical
- Headache
- Nausea
- Vomiting
- Balance problems
- Dizziness
- Visual problems
- Fatigue
- Sensitivity to light
- Sensitivty to noise
- Numbess/tingling
- Dazed
- Stunned
Cognitive
- Feeling mentally "Foggy"
- Feeling slowed down
- Difficulty concentrating
- Difficulty remembering
- Forgetful of recent information and conversations
- Confused about recent events
- Answers questions slowly
- Repeats questions
Emotional
- Irritable
- Sadness
- More emotional
- Nervousness
Sleep
- Drowsiness
- Sleep more than usual
- Sleep less than usual
- Difficulty falling asleep

 

Following a concussion, patients are prescribed rest from physically and cognitively fatiguing activities to allow the brain to recover (4). In addition to resting from sports, patients are often held out of full school or work days and have other restrictions, including no taking notes, reading or testing, nor use of computers, cell phones or television. They may also be encouraged to avoid bright or noisy environments. Excessive activity, either physical or cognitive, increased the energy demand upon the brain and may lead to prolonged symptoms. Patients are also cautioned against the return to any activities that have the potential to cause further trauma to the brain. Until the brain fully recovers from the initial injury, it is more vulnerable to re-injury. The second injury is usually more severe, and in the case of second-impact syndrome, may lead to permanent deficits or even sudden death (2). Recurrent injuries may lead to long term cognitive deficits, as in chronic traumatic encephalopathy (CTE), though further research needs to be done to determine if there is a true cause-and-effect (4).

Prior to participating in contact sports, athletes should undergo preseason baseline concussion testing (2). These may include tests like the SCAT-3, NFL Sideline Concussion Assesment Tool, or the computerized ImPACT testing, as well as a balance test, such as the Balance Error Scoring System (BESS) Test. Tests are repeated following a suspected concussion and pre- and post-injury scores are compared. This allows health care professionals to compare pre- and post-injury status for the presence of concussion and later for return-to-play decisions (2). Copies of concussion assessment tools are below:

SCAT 3
NFL Sideline Concussion Tool
BESS Test

Patients should be held from physical activity until they return to their pre-injury status to prevent the risk of a catastrophic event. Once a patient is deemed to be symptom-free by a physician, athletic trainer or physical therapist or other health care provider, they may begin a gradual return to activity. With a typical concussion that resolves quickly, the patient may progress through the return to play (RTP) protocol with one day at each stage, pending no increase in symptoms during or after (4). An athletic trainer or physical therapist is often helpful in safely progressing through the RTP protocol. If any concussion symptoms increase, the patient needs to rest until symptoms resolve, then take a step back and repeat the previous stage before continuing the RTP protocol (3). Patients who experienced persistent or severe post-concussive symptoms are often progressed more slowly, spending multiple days at each level. Patients with a history of previous concussions or those with more complex recoveries will likely require physician release for return to contact activity.
 

Graduated Return to Play Protocol (4)
Rehabilitation Functional exercise at each stage of rehabilitation Objective of each stage
1) No activity Symptom limited physical and cognitive test Recovery
2) Light aerobic activity Walking, swimming or stationary cycling keeping intensity <70% maximum permitted heart rate. Increase HR
3) Sport-specific exercise Skating drills in ice hockey, running drills in soccer. No head impact activities. Add movement
4) Non-contact training drills Progression to more complex training drills. eg. passing drills in football and ice hockey. May start resistance training. Exercise, coordination and cognitive load
5) Full-contact practice Following medical clearance participation in normal training activities. Restore confidence and assess functional skills
6) Return to play Normal game play.  

 

Approximately 10-15% of those sustaining a concussion will still experience symptoms after ten days (3). Risk factors for persistent symptoms include (2):
- History of previous concussion(s)
- Greater number of symptoms or increased severity of initial symptoms
- Female gender
   o May be due to the relationship between estrogen & cerebral blood flow or

      due to decrease head-neck mass
- Younger age
   o Due to lack of development of the brain
- History of depression, anxiety, irritability, learning disabilities, ADD/ADHD
- History of migraines or other headaches

Typically, a physician and/or an athletic trainer manage concussions, though patients with long-lasting concussive symptoms may benefit from referral to other health care professionals. Physical therapists may assist with physical symptoms, while a neuropsychologist is able to assess and treat cognitive and emotional symptoms that persist.

Physical therapists can play a vital role in the treatment of post-concussive syndrome and are often under-utilized. Physical symptoms may persist weeks after the initial injury and severely impact daily function. Headaches due to head trauma may have a cervicogenic component, much like whiplash. Addressing cervicothoracic mobility and soft tissue restrictions can often provide relief. In addition, strengthening deep cervical flexors and scapular stabilizers can also assist in improved scapulothoracic and cervical stability and decrease in headaches.

In addition, patients with post-concussive syndrome may have persistent dizziness, blurry vision, or balance deficits that may benefit from physical therapy (1). They may note difficulty walking through the hallway at school, riding in a car, with a change in head position, reading, or taking notes in class. A physical therapist experienced in vestibular rehabilitation can provide exercises to address ocular mobility, gait, and balance to allow for improved daily function (1).

Given the complexity of concussions and the variability of recovery, patients will often benefit from a team of health care providers to allow for the most efficient and thorough recovery. This team may include the physician, athletic trainer, physical therapist and neuropsychologist, in addition to the athlete, and possibly family. Though knowledge about concussions has increased dramatically in the recent past, continued research needs to be done. In addition to determining the most appropriate way to identify and treat an individual suffering symptoms from a concussion, we need to further our knowledge in preventing these injuries.

 

Click here to continue to "The Role of the Physical Therapist When Working With Patients With Post-Concussive Syndrome - (Part 2)"


Last revised: March 18, 2013
by Lauren Hogan, PT, DPT, ATC

 

References
1) Alsalaheen, B. A., Mucha, A., Morris, L. O., Whitney, S. L., Furman, J. M., Camiolo-Reddy, C. E., Collins, M. W., et al. (2010). Vestibular rehabilitation for dizziness and balance disorders after concussion. Journal of neurologic physical therapy : JNPT, 34(2), 87–93. doi:10.1097/NPT.0b013e3181dde568
2) Guskiewicz, K. M., Bruce, S. L., Cantu, R. C., Michael, S., Kelly, J. P., Mccrea, M., Putukian, M., et al. (2004). National Athletic Trainers’ Association Position Statement: Management of Sport-Related Concussion, 39(3), 280–297.
3) Harmon, K. G., Drezner, J. A., Gammons, M., Guskiewicz, K. M., Halstead, M., Herring, S. A., Kutcher, J. S., et al. (2013). American Medical Society for Sports Medicine position statement: concussion in sport. British Journal of Sports Medicine , 47 (1 ), 15–26. doi:10.1136/bjsports-2012-091941
4) McCrory, P., Meeuwisse, W. H., Aubry, M., Cantu, B., Dvorak, J., Echemendia, R. J., Engebretsen, L., et al. (2013). Consensus statement on concussion in sport: the 4th International Conference on Concussion in Sport held in Zurich, November 2012. British Journal of Sports Medicine, 47(5), 250–258. doi:10.1136/bjsports-2013-092313



Terms & Conditions

Please review our terms and conditions carefully before utilization of the Site. The information on this Site is for informational purposes only and should in no way replace a conventional visit to an actual live physical therapist or other healthcare professional. It is recommended that you seek professional and medical advise from your physical therapist or physician prior to any form of self treatment.



 
 
      
Advertisement
.