neuro

NEUROLOGICAL SYSTEM + HEADACHES — OVERVIEW OF THE NEUROLOGICAL SYSTEM

  • Major Role: The neurological system is responsible for:
    • Receiving information
    • Processing information
    • Responding to information signals throughout the body

How it Works

  • Signal Processing:
    • Signals are received from the nerves.
    • These signals are processed.
    • The brain then sends signals back to the rest of the body through the nervous system.

Regulation by the Nervous System

  • Due to signaling processes, the nervous system regulates many body functions, including:
    • Movement
    • Breathing
    • Vision
    • Thinking
    • Feeling emotions

PEDIATRIC NEUROLOGICAL DEVELOPMENT

  • Developmental Nuances: In children, the neurological system is still developing, with rapid growth.
  • Importance of Acknowledging Development:
    • Neurological alterations may appear differently in children compared to adults.
    • Manifestations may differ based on:
    • The child’s age
    • The child’s developmental stage

Nursing Considerations for Pediatric Neurologic Disorders

  • Nurses should not assume pediatric neurologic disorders present similarly in adults.
  • Understanding is necessary to provide appropriate care for:
    • Infants
    • Children
    • Adolescents

Effects of Neurological Disorders

  • Neurological disorders can impact a child’s:
    • Physical development
    • Emotional development
    • Behavioral development
    • Cognitive development
Key Nursing Concept
  • Some neurological alterations are:
    • Easy to notice
    • Obvious on assessment
  • Others require:
    • Detailed assessments
    • Thorough history-taking
    • Further diagnostic evaluation
Timing of Neurologic Alterations
  • Neurologic problems may:
    • Be present at birth
    • Appear later in childhood
    • Occur during adolescence
  • They may also be:
    • Short-term
    • Long-lasting
    • Continue into adulthood

NEUROLOGICAL ALTERATIONS COVERED IN THE MODULE

  • Disorders included:
    • Headaches
    • Head injuries
    • Spinal cord injuries
    • Infections
    • Epilepsy
    • Febrile seizures
    • Arteriovenous (AV) malformation
    • Hydrocephalus
    • Myelomeningocele
    • Tetanus
    • Botulism
    • Drowning
    • Cancer
  • Each disorder addresses:
    • Anatomy
    • Physiology
    • Pathophysiology
    • Screening
    • Etiology
    • Epidemiology
    • Risk factors
    • Clinical presentation
    • Diagnosis
    • Impact on overall health
    • Role of the nurse
    • Nursing process

KEY TERM DEFINITIONS

  • Febrile: Related to a fever
  • Hydrocephalus: Accumulation of fluid in the brain

ANATOMY AND PHYSIOLOGY OF THE NERVOUS SYSTEM

Major Components

  1. Peripheral Nervous System (PNS):
    • Network of nerves that branches throughout the entire body.
  2. Central Nervous System (CNS):
    • Composed of:
      • The brain
      • The spinal cord
Development of the CNS
  • The brain and spinal cord begin forming approximately 3 weeks into embryonic development.
  • Development continues until adulthood.
  • Importance: Injury, illness, or abnormal development can affect the nervous system at different stages.

BRAIN ANATOMY

  • Composed of:
    • Delicate folds of nervous tissue
    • Two hemispheres:
    • Right hemisphere
    • Left hemisphere

Brain Hemispheres

  • Each hemisphere has different behavioral functions.
  • Further divided into lobes.
  • Three layers of tissue (meninges) cover the brain.

SPINAL CORD ANATOMY

  • Extends from the base of the brain down through the skull, continues along the back, and passes through the vertebrae.
Description of the Spinal Cord
  • A soft, rope-like column containing:
    • Bundled nerve cells
    • Glia
    • Nerve fibers (axons)
    • Blood vessels
Function of the Spinal Cord
  • Serves as a major center or hub for body functions.

REGIONS OF THE SPINAL CORD

  • Divided into four main regions:
    • Cervical
    • Thoracic
    • Lumbar
    • Sacral
  • Further divided into:
    • 31 segments
    • 31 pairs of spinal nerves
Number of Nerves by Region
  • 8 Cervical nerves
  • 12 Thoracic nerves
  • 5 Lumbar nerves
  • 5 Sacral nerves
  • 1 Coccygeal nerve
  • Such nerves contribute to the peripheral network that carries sensory information:
    • To the brain
    • From the brain

HEADACHE — OVERVIEW

  • Definition: A headache is pain or discomfort felt in the head.
  • Can arise from many reasons.

Common Causes of Headaches

  • Many headaches result from:
    • Minor conditions
    • Temporary conditions
    • Environmental triggers impacting the CNS.
Examples of Environmental Triggers
  • Cold
  • Heat
  • Light
Important Nursing Point
  • Though commonly minor, headaches may also indicate a serious condition, especially if they:
    • Occur frequently
    • Cause vomiting
    • Impair vision
    • Occur with fever
    • Occur with neck stiffness

TYPES OF HEADACHES

  • Two primary types:
    • Primary headaches
    • Secondary headaches

PATHOPHYSIOLOGY OF PRIMARY HEADACHES

  • Definition: A primary headache is not caused by an underlying condition.
  • Causes:
    • Related to pain receptors in the head.
    • Disorders of brain function may cause discomfort.
Children and Primary Headaches
  • Some children may:
    • Display sensitive pain receptors.
    • Show an increased tendency to develop primary headaches.
Main Types of Primary Headaches in Children:
  • Migraines
  • Tension headaches
  • Less common:
    • Cluster headaches (rare in children)

KEY TERM DEFINITIONS

  • Cluster headaches: Frequent, severe headaches occurring on one side of the head, usually around the eye.

MIGRAINE HEADACHES

  • Occurrence: Can happen in:
    • Children of any age
    • Even infants
Characteristics of Migraines
  • May appear:
    • Curious – pain only
    • Along with neurological symptoms (aura).
Neurological Symptoms May Occur:
  • Before the migraine starts.
  • After the migraine starts.
Definition of Aura
  • A neurological manifestation causing unexpected sensations.

TYPES OF MIGRAINES

  1. Episodic migraines: Occurring on fewer than 15 days per month.
  2. Chronic migraines: Occurring 15 or more days per month continuously for at least three months:
    • At least 8 of these headaches have migraine features, such as:
    • Severe pain
    • Confusion
    • Sensory disturbance
    • Aura.

COMMON MIGRAINE AURAS INCLUDE

  • Visual distortions
  • Unusual motor sensations
  • Numbness or tingling in one area or one side of the body
  • Slurred speech

TENSION HEADACHES

  • Produce pain that feels like:
    • Tightness
    • Pressure
Causes of Tension Headaches
  • Caused by muscle tightness in:
    • Head
    • Neck
    • Shoulders
  • Often related to stress or other triggers.
Important Distinction
  • Tension headaches may share:
    • Similar triggers
    • Some features with migraine headaches in children.

SCREENING FOR PEDIATRIC HEADACHES

  • No universal screening tool exists specifically for pediatric headaches.
  • Diagnosis generally relies on:
    • Child’s description
    • Parent’s description
    • Provider assessment.
Institute Example:
  • Cincinnati Children’s Hospital developed the Pediatric and Adolescent Migraine Screen for school nurses.
Important Screening Principles
  • Questions must be:
    • Age-appropriate
    • In language the child can understand.
HEADACHE SCREENING QUESTIONS
  • To assess a headache, ask:
    • How severe is the pain?
    • What does the pain feel like?
    • What exacerbates the pain?
    • How often does it happen?
    • How does it affect the child’s usual activity level?
  • Such questions help distinguish:
    • Migraines
    • Tension headaches
    • Possible secondary causes

ETIOLOGY OF PRIMARY HEADACHES

  • Causes vary based on the primary headache type.

MIGRAINE ETIOLOGY

  • Not fully understood; however:
    • Chronic migraines often run in families (genetic component).
    • Environmental factors can:
    • Contribute to headaches
    • Worsen headaches
    • Trigger headaches in children prone to them.

COMMON PRIMARY HEADACHE TRIGGERS

  • Very high-yield categories to recognize include:
    • Not getting enough sleep
    • Irregular sleep schedule
    • Insufficient fluid intake
    • Poor nutrition
    • Irregular meals
    • Poor stress management
    • Exposure to abuse or neglect
    • Bullying
    • Heavy school workload
    • Excessive caffeine or withdrawal
    • Poor posture
    • Slumping neck/back/shoulders
    • Excessive screen use
    • Lack of exercise
    • Overexertion during sports
    • Exposure to heat
    • Sun exposure
    • Strong indoor lighting
    • Hormonal dysregulation during puberty.

TENSION HEADACHE ETIOLOGY

  • Generally caused by:
    • Stress (especially chronic stress).
  • Stress causes muscle tightening.
  • Some migraine triggers may also exacerbate tension headaches.

RISK FACTORS FOR PRIMARY HEADACHES

  • Include:
    • Genetic predisposition to migraines
    • Chronic stress
    • Environmental toxin exposure
    • Exposure to triggers that provoke headaches.
  • Infant Connection: Infants with a predisposition to migraines might present with more colicky behavior.

KEY TERM DEFINITIONS

  • Colic: Frequent and prolonged crying or fussiness without apparent reason.

EPIDEMIOLOGY OF PRIMARY HEADACHES

  • Headaches can affect any age group.
  • Migraines and tension headaches are common in:
    • School-age children
    • Increasingly prevalent with age.
  • Most common prevalence
    • In adolescents over 15 years
  • Females are more likely to experience migraines than males, particularly after puberty.

CLINICAL PRESENTATION OF MIGRAINES

  • Typically characterized by:
    • Pulsing or throbbing pain
    • Moderate to severe pain
    • Pain on one or both sides of the head
    • Nausea
    • Vomiting
    • Sensitivity to light and sound
    • Visual changes.
  • Younger children may also exhibit facial pallor.
Duration
  • Episodes usually last between 4 to 72 hours.
  • In younger children, migraines are typically shorter, lasting around 2 hours.

PHASES OF A MIGRAINE

  1. Pre-headache phase (prodrome):
    • Can start up to 72 hours before headache.
    • Possible features include:
      • Aura
      • Restlessness
      • Fatigue
      • Mood changes
      • Sensitivity to light/sound.
  2. Headache phase:
    • Pain occurs, possibly with or without neurological symptoms.
  3. Post-headache phase (postdrome):
    • Occurs after pain improves.
    • Can include fatigue, mood changes, difficulty concentrating.

CLINICAL PRESENTATION OF TENSION HEADACHES

  • Typically:
    • Less severe than migraines but may be challenging to distinguish.
  • Main Differences from Migraines:
    • Quality of pain:
    • Tension headache pain is bilateral, pressing, constricting, or feels like pressure.
    • Migraine pain is typically pulsing/throbbing.
  • Tension headaches may present:
    • Infrequently
    • Episodically
    • Frequently
    • Chronically.

LAB TESTING AND DIAGNOSTIC STUDIES FOR PRIMARY HEADACHES

  • Generally, no lab tests or diagnostic imaging are needed.
  • Diagnosis is based on:
    • Symptoms
    • Manifestations
    • History.

TREATMENT OF PRIMARY HEADACHES

  • Basic treatment recommendations:
    • For minor and sporadic headaches:
      • OTC medications
      • Health promotion strategies such as maintaining:
        • Consistent sleep
        • Balanced meals
        • Adequate hydration.
Important Treatment Principles
  • When a headache begins, clinicians should:
    • Reduce triggers
    • Administer full medication dosage as indicated
    • Treat early to prevent a worsening headache cycle.
Acute Treatment for Primary Headaches
  • Common medications include:
    • Age-appropriate ibuprofen
    • Age-appropriate acetaminophen.
  • Supportive measures like water and sports drinks with electrolytes are recommended.

Treatment Goals

  • Pain should improve within approximately one hour.

NONPHARMACOLOGIC MANAGEMENT

  • Primary headaches often improve with:
    • Rest
    • Reduced light
    • Environmental stressor reduction.

Prevention Plans

  • Nurses can assist in developing:
    • Prevention plans
    • Trigger management plans
    • Daily strategies for headache prevention.
Important Medication Caution
  • Medication use should not exceed 2 to 3 days per week for clients with frequent headaches to avoid rebound headaches.

IBUPROFEN (MOTRIN)

  • Class: NSAID (nonsteroidal anti-inflammatory drug).
  • Action: Decreases prostaglandin synthesis.
  • Therapeutic use: Decreases pain, inflammation, and fever.
Adverse Effects
  • Include:
    • Myocardial infarction, stroke, arrhythmia, edema, hypertension
    • Stevens-Johnson syndrome, rash, visual problems
    • GI upset
    • Nausea, vomiting
    • Stomach pain, indigestion, diarrhea, GI bleeding.
Interactions
  • Might reduce cardioprotective effects of antiplatelet/anticoagulant drugs,
  • May increase blood glucose-lowering effects of insulin,
  • Increases bleeding risk with salicylates.
Contraindications
  • Include:
    • History of gastric ulcers
    • Bleeding disorders
    • Asthma, kidney disease,
    • Liver disease, third-trimester pregnancy,
    • Hypersensitivity to aspirin or other NSAIDs.
Client Education
  • Avoid long-term use,
  • Consult provider if pain does not improve within 24 hours,
  • Take with food or milk to minimize GI upset.

ACETAMINOPHEN (TYLENOL)

  • Class: Antipyretic, nonopioid analgesic.
  • Action: Inhibits prostaglandin synthesis.
  • Therapeutic use: Decreases pain and fever.
Adverse Effects
  • Include:
    • Hypertension, hypotension,
    • Stevens-Johnson syndrome,
    • Nausea, abdominal pain, vomiting,
    • Constipation, kidney failure,
    • Liver toxicity with excessive long-term use.
Interactions
  • Include alcohol for risk of enhanced liver toxicity.
Contraindications
  • Include liver disease and hypersensitivity to acetaminophen.
Client Education
  • Do not exceed the recommended dose,
  • Overdosing increases liver damage risk,
  • Take with food to mitigate abdominal upset.

SECONDARY HEADACHES

PATHOPHYSIOLOGY OF SECONDARY HEADACHES

  • Defined as headaches caused by an underlying condition indicating a manifestation of another problem.
Examples of Secondary Causes
  • Serious:
    • Traumatic injury,
    • Neurological disorder,
    • Severe illness.
  • Less serious or temporary:
    • Cold,
    • Sinus infection,
    • Clenching teeth,
    • Jaw tension.
Important Distinction
  • Secondary headaches may resemble migraines or tension headaches, requiring careful assessment for underlying causes.

SCREENING FOR SECONDARY HEADACHES

  • There’s no universal screening tool specifically for secondary conditions leading to pediatric headaches.
  • Assessment should primarily focus on:
    • Pain,
    • Frequency,
    • Symptoms,
    • Associated manifestations.
Clues for Assessment include:
  • Neurological symptoms,
  • Injury,
  • Infection,
  • Other disorders that may contribute to the headache.

ETIOLOGY OF SECONDARY HEADACHES

  • Causes may stem from:
    • Traumatic injury
    • Infections
    • Temporal mandibular dysfunction
    • Bruxism (teeth grinding).

RISK FACTORS FOR SECONDARY HEADACHES

  • Depends on the underlying cause, as secondary headaches are not a single disorder and manifest variably.
EPIDEMIOLOGY OF SECONDARY HEADACHES
  • Varies with underlying causes and conditions, increasing the importance of looking for associated risk factors in examinations.

CLINICAL PRESENTATION OF SECONDARY HEADACHES

  • Presentation is determined by the underlying cause; monitoring for red flags is critical due to potential for serious underlying conditions.

LAB TESTING AND DIAGNOSTIC STUDIES FOR SECONDARY HEADACHES

  • A physical examination is often required alongside neuroimaging to ascertain risks such as intracranial injury.
Key Nursing Point
  • Temporary neurological symptoms during an aura could seemingly mislead assessment of more serious underlying conditions.

TREATMENT OF SECONDARY HEADACHES

  • Focused on the underlying cause whereas symptomatic relief may be derived from NSAIDs and acetaminophen.

IMPACT OF HEADACHES ON OVERALL HEALTH

  • Common complaints among children, generally non-serious and temporary but untreated headaches can lead to significant functional impact.
Treatment Importance
  • Untreated primary headaches may exacerbate into chronic conditions potentially leading to long-lasting outcomes and poorer results.

MIGRAINES AND QUALITY OF LIFE

  • Headaches notably affect not only individual health but family dynamics and quality of life overall, influencing emotional and psychosocial health.
Pediatric Considerations
  • Frequent headaches or migraines contribute to school absence, impacting relationships and quality of life.

PSYCHOSOCIAL AND DEVELOPMENTAL IMPACT

  • Notably correlated with adverse life experiences such as abuse or neglect potentially leading to further complications including missed activities, social interactions, and academic performance concerns.

HEAD INJURIES / TRAUMATIC BRAIN INJURIES (TBI) — OVERVIEW

Definition

  • A head injury occurs when trauma affects:
    • The brain
    • Surrounding tissues
    • Blood vessels.
Range of Head Injuries Includes:
  • Mild bruises/cuts to severe life-threatening conditions.
Pathophysiology of TBI
  • Two Types of Injury:
    • Primary Injury: Direct impact damage.
    • Secondary Injury: Develops post-trauma due to cellular disruption, tissue damage, or cerebral swelling.

TYPES OF HEAD INJURY / TBI

Major Types Discussed Include:
  1. Concussion:
    • Results from direct or indirect impact.
  2. Contusion/Laceration:
    • Damage to blood vessels causing hemorrhage.
  3. Hematoma:
    • Blood accumulation leading to increased pressure.
  4. Shaken Baby Syndrome/Abusive Head Trauma:
    • Results from violent shaking leading to neurotrauma.

CONCUSSION

Definition

  • A concussion occurs from:
    • Direct impact to the head or neck
    • Indirect impact leading to brain movement within the skull.
Clinical Point
  • Though typically not life-threatening, concussions require careful monitoring for progressive brain injury risk.

CONTUSION / LACERATION

Definition

  • Contusion: Ruptured blood vessels causing hemorrhage.
  • Laceration: Tearing of tissue with visible damage.
Key Point on Brain Contusion
  • Internal damage may lead to permanent disability or abnormalities.

HEMATOMA

Types of Hematoma Include:

Characteristics of Epidural Hematoma:
  • Blood pooling inside the skull but outside dura mater, primarily arterial rupture.
Characteristics of Subdural Hematoma:
  • Blood pooling between dura mater and brain, typically venous rupture.
  • Noted as the most common hematoma.

SHAKEN BABY SYNDROME / ABUSIVE HEAD TRAUMA

Definition

  • Associated with traumatic shaking leading to significant neurological impairment, potentially lifelong deficits.
Screening Approaches Include:
  1. Pupil Reactivity:
    • Size, equality, and reaction to light.
  2. Glasgow Coma Scale (GCS):
    • Evaluating cognitive awareness and neurologic function.
Important Cause of TBI:
  • Trauma through falls, sports injuries, or violent behavior.

RISK FACTORS FOR TBI

  • Include male sex, physical activity, exposure to violence, or abusive environments.

LAB TESTING AND DIAGNOSTIC STUDIES

  • Necessary for proper TBI assessment, including imaging measures for evaluation of injury severity.

TREATMENT

  • Based on severity, control of secondary injury may require appropriate interventions including surgery if intracranial pressure exceeds safe levels.

IMPACT ON OVERALL HEALTH

  • TBI can lead to enduring effects concerning physical functionalities, mental health, and developmental prognosis, demanding significant care and adjustment to routine.

PSYCHOSOCIAL AND DEVELOPMENTAL IMPACT

  • Analysis of TBI cases underline the importance of considering mental health concerns leading to PTSD or cognitive functioning reverberations especially among affected children.

PEDIATRIC CONSIDERATIONS

  • Special need for tailored approaches in pediatric patients post-TBI due to their developmental trajectories and lifetime management needs.

HEALTH PROMOTION AND DISEASE PREVENTION

  • Care for sustained recovery mandates supervision, early intervention, rehabilitation, and other preventative strategies to mitigate future occurrences.

CANCER / NEUROLOGIC TUMORS — OVERVIEW

Types of Tumors Discussed

  • Gliomas (astrocytomas, ependymomas, brainstem gliomas)
  • Medulloblastomas
  • Neuroblastomas

Risk Factors for Tumors Include:

  • Prior radiation exposure to the brain
  • Genetic conditions like neurofibromatosis or tuberous sclerosis.
Clinical Presentation Variability
  • Clinical presentation of tumors depends on a variety of factors including location, size, and presence of secondary effects.
Diagnostic Strategies for Tumors Include:
  • Imaging tests like MRIs, CTs
  • Biopsy for histological confirmation
Pediatric Impact
  • Tumors may lead to compensatory developmental hurdles, requiring structured rehabilitative efforts.
Health Promotion and Risk Management Strategies
  • Focus on parental education surrounding vaccination and avoidance of known environmental or genetic risk factors that influence tumor manifestation in children.

KEY TERM DEFINITIONS

  • Benign: Non-cancerous growth.
  • Malignant: Cancerous disease that may spread.
  • Glioma: Tumor from glial precursor cells in CNS.
  • Astrocytoma: Tumor from astrocytes, main brain tumor in children.
  • Medulloblastoma: Common malignant embryonal brain tumor.
  • Neuroblastoma: Solid malignant tumor starting in immature nerve cells.

HIGH-YIELD TAKEAWAYS:

  • Early recognition and structuring of care for pediatric neurological disorders are primary responsibilities of nursing.
  • Vaccination strategies, safety measures regarding injury, and proper environmental practices are pivotal to preventing neurologic conditions in children.
  • Nurses need to effectively educate and provide family support to foster holistic approaches to pediatric neurologic care.