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Review ArticlePractice

Office management of mild head injury in children and adolescents

Juan Antonio Garcia-Rodriguez and Roger E. Thomas
Canadian Family Physician June 2014, 60 (6) 523-531;
Juan Antonio Garcia-Rodriguez
Assistant Professor, Department of Family Medicine at the University of Calgary in Alberta.
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  • For correspondence: juanantonio@shaw.ca
Roger E. Thomas
Professor, Department of Family Medicine at the University of Calgary in Alberta.
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Abstract

Objective To provide family physicians with updated, practical, evidence-based information about mild head injury (MHI) and concussion in the pediatric population.

Sources of information MEDLINE (1950 to February 2013), the Cochrane Database of Systematic Reviews (2005 to 2013), the Cochrane Central Register of Controlled Trials (2005 to 2013), and DARE (2005 to 2013) were searched using terms relevant to concussion and head trauma. Guidelines, position statements, articles, and original research relevant to MHI were selected.

Main message Trauma is the main cause of death in children older than 1 year of age, and within this group head trauma is the leading cause of disability and death. Nine percent of reported athletic injuries in high school students involve MHI. Family physicians need to take a focused history, perform physical and neurologic examinations, use standardized evaluation instruments (Glasgow Coma Scale; the Sport Concussion Assessment Tool, version 3; the child version of the Sport Concussion Assessment Tool; and the Balance Error Scoring System), instruct parents how to monitor their children, decide when caregivers are not an appropriately responsible resource, follow up with patients promptly, guide a safe return to play and to learning, and decide when neuropsychological testing for longer-term follow-up is required.

Conclusion A thorough history, physical and neurologic assessment, the use of validated tools to provide an objective framework, and periodic follow-up are the basis of family physician management of pediatric MHI.

Case

Jerry is a 13-year-old boy who hit his head against the cement while skate-boarding with some friends. He was not wearing a helmet and he did not lose consciousness. He felt “dazed” but after resting for a few minutes he felt better and continued skateboarding with his friends. Soon after that, he developed a headache, which persisted after he returned home 20 minutes later. During the next 3 hours he developed nausea, vomited once, and felt fatigued. His parents then brought him to your office for evaluation.

The spectrum of head trauma that family physicians see in their offices usually differs from that seen in the emergency department. Although family doctors provide care in both settings, the objective of this review is to provide practical, current approaches and specific tools for family physicians to use in their office practices to facilitate evidence-based assessment and up-to-date management of mild head injury (MHI) in the pediatric population.

Head injury is common and ranges from concussion to severe head trauma. The management and evaluation vary according to the age of the patient. This article focuses on the school-aged and adolescent population. The understanding of and consensus about concussion is evolving but controversy about definitions persists,1–3 and the terms concussion, mild traumatic brain injury, mild head injury, minor head injury, and minor closed head injury are often used interchangeably. For the purpose of this article, the term mild head injury is used as the more general term. Although there are different definitions for MHI, they share similar characteristics (Table 1).3–5

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Table 1.

Definitions of concussion or MHI

About one-third of all MHIs annually in the United States occur in the pediatric population (5 to 19 years of age).6,7 Trauma is the main cause of death in children older than 1 year of age, and head trauma is the leading cause of disability and death.8 In the high school population, 9% of athletic injuries involve MHI.9

The mechanism of injury includes direct trauma to the face, head, or neck, or transmitted force from trauma to other parts of the body.1–3,6–11 The reaction to head trauma in the pediatric population differs from that in the adult population. Pathophysiologic changes after MHI are more pronounced in immature brains,12 and in children adverse effects are often detected through worsened academic performance due to impaired cognitive function and behavioural problems.13,14 Compared with adults, pediatric brains have a higher brain water content, the relative size of the head is larger than the rest of the body, the vasculature is more easily disrupted, and the degree of myelination differs.15 Hence, epidural hematoma, subdural hematoma, and second-impact syndrome occur more frequently in children.

Most pediatric patients appear to recover promptly, and 80% to 90% of MHI cases resolve within 7 to 10 days.1,6,16,17 In some children and adolescents recovery can be more prolonged,18–20 with 24.5% of 13- to 21-year-olds still having disabling symptoms 1 month after head trauma. In some cases recovery might take up to 3 months,2,21 and 5.9% of those affected remain symptomatic after 6 months.22 For some, symptoms of concussion can persist for up to 1 year.23–26

A key risk factor is a history of previous MHI,27,28 likely owing to lifestyle and risk-taking, and possibly because previous MHI might cause less responsiveness to physiologic neural activation.12,29 Other risk factors are younger age (children and adolescents),18–20 the mechanism and force of the injury, the sport that caused the injury (if the injury is due to a sport) and the position played on the field,1,30 and female sex.31

Sources of information

MEDLINE (1950 to February 2013) and the Cochrane Library, including the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, and DARE (2005 to 2013), were searched using terms relevant to concussion and head trauma. Guidelines, position statements, articles, and original research relevant to MHI were selected.

The current standards for the initial assessment of a patient with a concussion are based on international conference consensus statements and recommendations from medical academies (level III evidence). For the purpose of this manuscript we will use the clinician level of obligation of recommendation used by the American Academy of Neurology (Table 2).3

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Table 2.

Clinician level of obligation for recommendations from the American Academy of neurology: A modified Delphi approach was used to achieve consensus.

Main message

Assessment and diagnosis

A comprehensive initial assessment should include symptoms (Table 3),1,32,33 details of the mechanism of injury, the timeline of symptoms, and any factor that could affect its presentation or management (Box 1).1,32,34 Child abuse should be ruled out. Standardized tools (Table 4) should be used to assess physical symptoms and cognitive status1,2,10,33,35,36 (level C), and physicians should be instructed in their proper use (level B). A recently developed tool is the Sport Concussion Assessment Tool, version 3 (SCAT3), which is based on consensus reached at the last International Conference on Concussion in Sport.32 A SCAT3 for specific use in 5- to 12-year-old children has also been developed (Table 4).

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Table 3.

Signs and symptoms of concussion

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Table 4.

Standardized instruments, online courses, and resources available for assessing or monitoring patients experiencing concussion symptoms

A complete examination includes assessment of the head for signs of trauma, lacerations, abrasions, and skull irregularities that could suggest fractures (eg, depression, determination of skull discontinuity through lacerations). Signs of basilar skull fracture should be sought, including hemotympanum, drainage of fluid or blood from the nose or ears, Battle sign, or “raccoon eyes.”8

A complete neurologic examination should be performed, although focal neurologic signs are frequently not found. Mental status evaluation in the office should start with a Glasgow Coma Scale (GCS) assessment. A balance test should be performed at the initial assessment.1 The combination of these assessment tests increases the accuracy of the diagnosis.37 When cognitive symptoms persist, neuropsychological tests can be used and should be interpreted relative to the preaccident status.1,15

Investigations

Radiographs have low predictive value in patients with no loss of consciousness and no clinical signs of skull fracture. An important concern in the initial evaluation is the possibility of missing an intracranial lesion in any child who has suffered an MHI.8,38,39 For that reason a computed tomography (CT) scan could be requested (level C), but controversy persists about the criteria for choosing one.

The Canadian CATCH (Canadian Assessment of Tomography for Childhood Head Injury) multicentre study enrolled 3866 patients (90.2% had GCS scores of 15, 7.3% had GCS scores of 14, and 2.5% had GCS scores of 13). Their combination of 4 high-risk signs provided a sensitivity of 100% (95% CI 86.2% to 100.0%) and specificity of 70.2% (95% CI 68.6% to 71.6%) for the need for neurologic intervention. Adding the 3 medium-risk signs resulted in a small decrease in sensitivity to 98.1% (95% CI 94.6% to 99.4%) and a 20.1% decrease in specificity to 50.1% (95% CI 48.5% to 51.7%).38 Box 2 and Table 5 present recommendations based on the CATCH study results to help family doctors working in the emergency department or community offices make the decision either to order or forego CT scans in different groups of children.38

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Table 5.

Performance of the CATCH rule: A) Using the 4 high-risk signs, sensitivity was 100.0% (95% CI 86.2% to 100.0%) and specificity was 70.2% (95% CI 68.6% to 71.6%); 30.2% of patients would undergo CT scanning. B) Using the 4 high-risk and 3 medium-risk signs, sensitivity was 98.1% (95% CI 94.6% to 99.4%) and specificity was 50.1% (95% CI 48.5% to 51.7%); 51.9% of patients would undergo CT scanning.

The much larger US PECARN (Pediatric Emergency Care Applied Research Network) multicentre study40 used a similar approach and corroborated the CATCH findings. The PECARN prediction rules are provided in Figure 1.40 The PECARN rules have not yet been applied to the smaller CATCH data set to compare the rules.

Figure 1.
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Figure 1.

The PECARN rule: A) Children younger than 2 y. B) Children aged 2 y and older.

CT—computed tomography, GCS—Glasgow Coma Scale, LOC—loss of consciousness, PECARN—Pediatric Emergency Care Applied Research Network.

Reproduced from Kuppermann et al, with permission from Elsevier.

Although there is no consensus about the use of neuropsychological testing, one indication could be persistent symptoms preventing return to academic or sport activities,41 or it could be used to determine if the concussion has been resolved (level C).3

Box 1.

Aggravating factors to be considered at the initial assessment of children with MHI

The following should be considered at the initial assessment:
  • Pre-existing neurologic disorder

  • Learning disorders

  • ADD or ADHD

  • Pre-existing mood disorders

  • Sleep disorders

  • Migraine headaches

  • Alcohol or drug use

  • Bleeding abnormalities

  • Language barrier

  • Multiple traumas

  • Use of psychoactive drugs

  • Use of anticoagulants

  • History of previous concussion

  • Dangerous style of playing

  • Suspected or diagnosed cervical spine injury

  • ADD—attention deficit disorder, ADHD—attention deficit hyperactivity disorder, MHI—mild head injury.

  • Adapted from Harmon et al,1 McCrory et al,32 and the Committee on Quality Improvement of the American Academy of Pediatrics Commission on Clinical Policies and Research.34

Progress with the case

During assessment Jerry describes feeling “in a fog.” He continues to have a headache and is fatigued. Findings of his physical examination and coordination tests are normal, but he scores 13 out of 15 on the memory portion of the standardized assessment of concussion, and results of his balance testing are abnormal. You explain your assessment to Jerry’s parents, provide clear advice about how to observe him during the next 24 hours, emphasize alarm symptoms that should prompt immediate reassessment, and schedule a follow-up visit for the next morning.

Management

Because of the heterogeneity of the causes and presentations of head trauma, it has been difficult to define a standard of acute care for children and adolescents.10,34 The management of concussion is based on the status and progress of the individual patient rather than on grading as was suggested in the past. Once a complete focused history and a physical assessment have been performed, and severe injury or complications have been ruled out, the main strategy of the management of MHI is rest and observation,3,32,42 with a prudent observation period of 24 to 48 hours.34 Any deterioration in clinical status during that time or in the following days should prompt further evaluation.43 Adequate observation includes regular assessment of the patient in the office, clinic, or at home by a person competent to recognize abnormal changes and to make the decision to contact medical personnel when needed. Parents and caregivers should be educated about how to identify improvement, chronicity, or worsening of the condition,35 and various resources are available for that purpose (Table 4).44 Adequate conditions for compliance, such as geographic accessibility, adequate transport, and reliable caregivers or parents, should be assessed. Difficulties complicating parental participation include incompetence, previous neglect of children, intoxication, unavailability, or language barrier. If the conditions for observation are inadequate, the child should be observed in a health care facility or hospital.34

Family physicians should provide education about symptoms, expected timelines and the course of recovery, and advice on how to cope with symptoms, how to access medical services or further support promptly, and how to achieve a gradual return to regular activities.2,33,44–49

There is general agreement that management of MHI includes mental and physical rest.1,11,18,32–34,42,43,50 This is of particular importance when returning to learning activities. The patient should abstain from any activities that include intense mental focus such as reading, use of computers, video games, solving puzzles, texting, watching television, or schoolwork.50 Based on the specific needs of the child, the physician should coordinate the modification of school activities,34,51 such as allowing extra time for completion of tasks or assignments, modification of the learning environment (eg, allow recording of classes, allow somebody else to take notes for the patient), breaking the workload into smaller pieces, rescheduling assignments, modified testing (eg, spoken responses instead of long essays), and changes in the school routine to avoid fatigue (eg, shorter school days, more breaks, days off).

Box 2.

The CATCH rule

High risk (neurologic intervention needed)
  • GCS score < 15, 2 h after injury

  • Suspected open or depressed skull fracture

  • History of worsening headache

  • Irritability

Medium risk (brain injury identified on CT scan)
  • Any sign of basal skull fracture (eg, hemotympanum, “raccoon eyes,” otorrhea or rhinorrhea, Battle sign)

  • Large boggy hematoma of the skull

  • Dangerous mechanism of injury (eg, motor vehicle crash, fall from elevation ≥ 0.9 m or 5 stairs, fall from a bicycle without a helmet)

  • CATCH—Canadian Assessment of Tomography for Childhood Head Injury, CT—computed tomography, GCS—Glasgow Coma Scale.

  • Data from Osmond et al.38

Based on the severity of the case, the physician should lead a team comprising the parents or guardians, school administrators, day-care providers, the school nurse, a psychologist, and anyone else involved with the patient’s case to facilitate the assessment and monitoring of the recovery process.51 This teamwork will help address important factors such as tolerance of academic activities, avoidance of “toughing out” symptoms during study sessions, individualization of management based on specific patient characteristics, modification of tasks, requests for medical reassessment, variation and timing of symptoms during different activities (eg, 15 minutes after concentrating or reading), identification of activities that might pose more difficulty, triggering factors (eg, worsening of symptoms with noise or lighting), monitoring aggravating factors such as attention deficit hyperactivity disorder, and addressing frustration and embarrassment. Tests providing standardized symptom scores are helpful to assess the patient’s progress.1 The child should avoid participation in sports or physical activities, and this should be made clear to parents, coaches, trainers, and teachers.

Once the child who experienced MHI has been assessed in the office, the traditionally advised strategy of keeping the patient awake is not required, as sleep is restorative.1 The child should be allowed to sleep but should be checked periodically for clinical deterioration.8 If there is a concern about the level of consciousness, further assessment including evaluation with neuroimaging should be arranged.

During the initial hours after the incident, medications should be avoided that could affect evaluation of cognition (eg, meclizine, benzodiazepines), mask symptoms (eg, antiemetics), or facilitate bleeding (eg, acetylsalicylic acid, nonsteroidal anti-inflammatory drugs).

After the acute phase or as part of postconcussion syndrome management, other management strategies could be included. Headache can be managed with acetaminophen, but if it becomes chronic (more than 6 weeks), traditional multidisciplinary management could be implemented.52 A meta-analysis found no strong evidence to guide treatment of posttraumatic headache, and management is based on treatment by headache category.53 Sleep disturbance is treated with observation and sleep hygiene, but if it is persistent, medication or cognitive therapy can be useful. No medication is advised for daytime somnolence in the acute phase. Mood disorders should be managed without medication, but if they become chronic (more than 6 to 12 weeks) medication or counseling could be used.1 Vestibular therapy is a good treatment for persistent vertigo or dizziness.1 Attention deficits should not be treated with medication, but instead academic demands should be decreased.54,55 A patient who has received medications for concussion-related symptoms should no longer be taking the medication before returning to any contact-sport activity (level B).3

While a young patient is still symptomatic and in the recovery period it is important to ensure that he or she will not experience any further head trauma that could lead to a second-impact syndrome or fatal diffuse cerebral swelling,50 which might involve altered cerebrovascular autoregulation.

The adolescent that is involved in sports should be evaluated and cleared to play by a physician familiar with MHI management (level B).3,4 Return to play should be allowed only when the treating physician issues a medical statement of fitness,1 and an individualized program for gradual return to play should be followed (level C). The different stages of this protocol include rest, light aerobic activity, sport-specific activity, drills without body contact, drills with body contact, and finally return to game play.1,5,11,32,34,50 Recovery should be assessed and if the symptoms reappear at any stage, the patient should return to the previous stage for at least 24 hours. Specific steps should be taken to avoid attempts from coaches, teachers, parents, or anyone else involved to force an earlier return to sport activities. Counseling about past MHI, the risk of future MHI, and the cumulative effect of MHI should be provided, and the patient and relatives should be assessed to determine whether they have an indifferent or competitive attitude that might lead to future concussions.

Progress with the case

The following morning Jerry returns to see you. He has only a mild headache and results of his examination and assessment tests are completely normal. You provide instructions about mental rest (no video games, texting, computer work, or solving puzzles) and a gradual return to school (rescheduling of tests and academic assignments as needed), and explain the protocol to return to sport activities. You provide counseling about the use of helmets in future sport activities and remind Jerry’s parents how to recognize abnormal changes and worsening of his condition. You advise physical rest until his headache resolves, and after that light aerobic activity could be tried. If his symptoms reappear he should return to rest for at least 24 hours, but if he remains asymptomatic the stages of the return-to-activity protocol should be followed. You schedule a follow-up appointment to assess his progress and to guide his return to play.

Conclusion

Assessment and management of MHI continues to evolve, and different medical entities continue to issue statements and guidelines addressing this subject. The SCAT3 and other tools presented in this review are the most up-to-date and relevant examples of this evolution and change in thinking. More large-scale research is needed to clarify the optimal combination of assessment tests (although it is likely that the SCAT3 for sports injury will be the most widely used) and management of MHI. Although the use of imaging studies is still controversial, the decision to request them should be based on adequate clinical suspicion of intracranial lesions, with evidence-based steps followed to guide that decision. The CATCH study offers useful data for an evidence-based decision.

Mental and physical rest and adequate observation are the mainstay of management, and family physicians should guide parents and ensure that this is accomplished, and any deterioration should dictate prompt intervention. Guidance and education to patients, parents, and coaches are important parts of the management that family physicians provide and the educational resources noted in this article are intended to facilitate these tasks. Once return to regular academic or sport activities is deemed appropriate, progressive supervised steps can provide safe re-engagement. The treating doctors should bear in mind that the vulnerability of the pediatric brain results in longer recovery periods and the possibility of more complications in children or adolescents suffering from MHI.

Notes

EDITOR’S KEY POINTS

  • Recent guidelines and international consensus statements recommend and provide diagnostic tools that can help family physicians diagnose, manage, and follow up with children and adolescents with mild head injury.

  • The Sport Concussion Assessment Tool, version 3, developed based on international consensus, is the most recently developed method of evaluation. It provides a comprehensive and relatively rapid method of assessment. Coordination of adequate follow-up by parents and health care providers is a key element of the management of mild head injury by family physicians.

Footnotes

  • This article is eligible for Mainpro-M1 credits. To earn credits, go to www.cfp.ca and click on the Mainpro link.

  • This article has been peer reviewed.

  • La traduction en français de cet article se trouve à www.cfp.ca dans la table des matières du numéro de juin 2014 à la page e294.

  • Contributors

    Both authors contributed to the literature review and interpretation, and to preparing the manuscript for submission.

  • Competing interests

    None declared

  • Copyright© the College of Family Physicians of Canada

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Canadian Family Physician: 60 (6)
Canadian Family Physician
Vol. 60, Issue 6
1 Jun 2014
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