PEDS 2

STUDY GUIDE: Pediatric Neurology & Endocrine Dysfunction

SECTION 1: Pediatric Neurologic Dysfunction (Chapter 27)
1. Seizure Disorders: Epilepsy vs. Febrile Seizures

  • Epilepsy

    • Definition: Two or more "unprovoked" seizures.

    • Cause: Chronic condition that can be idiopathic or structural in nature.

    • Treatment: Long-term management using Antiepileptic Drugs (AEDs).

  • Febrile Seizures

    • Definition: Seizure triggered by a rapid rise in body temperature.

    • Cause: Often associated with an acute illness; commonly occurs in children aged 6 months to 5 years.

    • Treatment: Focus on treating the fever; typically benign and self-limiting.

2. Reye’s Syndrome

  • Pathophysiology: Characterized by acute encephalopathy and liver dysfunction, usually following a viral illness (e.g., flu or chickenpox) that has been treated with Aspirin (Salicylates).

  • Medication for Cerebral Edema: Mannitol, an osmotic diuretic, works by pulling fluid from the brain tissue into the bloodstream thereby reducing intracranial pressure (ICP).

3. Bacterial Meningitis

  • Characteristic Rash: Presence of petechial or purpuric rash which is non-blanching. This is indicative of life-threatening meningococcemia.

  • Precautions:

    • Bacterial Meningitis: Implement droplet precautions (including a surgical mask and private room) for a minimum of 24 hours after antibiotic therapy begins.

    • Viral Meningitis: Usually treated with standard precautions.

  • Age-Specific Symptoms:

    • Infants: Symptoms include bulging fontanels, high-pitched cry, and paradoxical irritability (crying when held).

    • Children/Adolescents: Symptoms include nuchal rigidity (stiff neck) and positive Kernig’s and Brudzinski’s signs.

4. Nursing Care: Seizures & Head Injury

  • Nursing Role During Seizure:

    • Document the start time and duration of the seizure.

    • Maintain Airway: Position the child in a side-lying position to facilitate airway maintenance.

    • Safety Precautions: Protect the child from injury (e.g., pad rails); do not restrain the child, and do not place anything in the mouth during the seizure.

  • Postictal Period: Post-seizure, the child may exhibit sleepiness, confusion, or headache. It is critical to maintain airway and safety until the child is fully awake.

  • Head Injury Plan:

    • Keep the head of the bed (HOB) elevated at 30 degrees with the head positioned midline.

    • Monitor for signs indicative of "Cushing’s Triad": an increase in blood pressure, bradycardia, and irregular respirations.

5. Hydrocephalus

  • Definition: Hydrocephalus is characterized by an imbalance in cerebrospinal fluid (CSF) production and absorption, leading to increased intracranial pressure (ICP).

  • Treatment: Surgical intervention via the placement of a ventriculoperitoneal (VP) shunt to drain excess fluid into the abdomen.

SECTION 2: Endocrine Dysfunction
1. Growth Hormone (GH) Deficiency

  • Medication Administration: Growth Hormone (Somatropin) is administered via subcutaneous injection.

  • Education: It is typically administered daily, often at bedtime, to mimic the natural release pattern of growth hormone. Treatment continues until the ossification of the bone plates (epiphyses) occurs.

2. Diabetes Mellitus (DM) Comparison

  • Type 1 Diabetes (Insulin-Dependent Diabetes Mellitus - IDDM)

    • Pathophysiology: Characterized by absolute insulin deficiency due to autoimmune destruction of pancreatic beta cells.

    • Onset: Abrupt, usually occurring in childhood or adolescence.

    • Management: Involves insulin injections or the use of an insulin pump, accompanied by dietary management and physical activity.

  • Type 2 Diabetes

    • Pathophysiology: Involves insulin resistance or relative insulin deficiency.

    • Onset: Gradual, commonly linked to obesity and lifestyle factors.

    • Management: Includes dietary changes, exercise, oral medications, or insulin therapy if necessary.

3. Home Management of IDDM

  • Sick Day Rules: It is important to always administer insulin during illness, as this increases glucose levels. Blood sugar and ketones should be monitored more frequently.

  • Exercise Considerations: Provide an additional 15 grams of carbohydrate snack prior to engaging in vigorous physical activity.

  • Hypoglycemia Management (The "Rule of 15"):

    • Administer 15 grams of fast-acting carbohydrates (such as juice or glucose tablets).

    • After 15 minutes, recheck blood glucose levels.

    • If blood glucose is still <70 mg/dL, repeat the process.

  • Diabetic Ketoacidosis (DKA): This is a medical emergency with notable signs such as Kussmaul respirations, fruity breath, and dehydration.

    • Priority Management: Initiate treatment with intravenous fluids (Normal Saline) first, followed by the administration of Regular Insulin via IV. Continuous monitoring of potassium levels is critical during this management.

SECTION 1: Pediatric Neurologic Dysfunction (Chapter 27)

1. Seizure Disorders: Epilepsy vs. Febrile Seizures

  • Epilepsy

    • Definition: Epilepsy is defined as the occurrence of two or more unprovoked seizures, which are characterized by sudden, uncontrolled electrical disturbances in the brain, leading to alterations in behavior, movement, sensation, or awareness.

    • Cause: This chronic neurological condition can have various underlying causes, which may be idiopathic (unknown origins), structural (related to brain abnormalities), or due to metabolic imbalances. Factors like head injury, stroke, infections, or genetic predispositions can contribute to its development.

    • Treatment: Long-term management primarily involves the use of Antiepileptic Drugs (AEDs), which aim to control seizures and improve quality of life. Personalized treatment plans, including dosage adjustments and drug combinations, may be required based on the patient's response and side effects.

  • Febrile Seizures

    • Definition: Febrile seizures are convulsions triggered by fever, specifically caused by a rapid rise in body temperature, often exceeding 100.4°F (38°C). These seizures primarily affect young children.

    • Cause: These seizures are frequently associated with acute illnesses such as viral infections including influenza and upper respiratory tract infections; they are most prevalent in children aged 6 months to 5 years.

    • Treatment: The primary focus is on treating the underlying fever and ensuring the child’s comfort. Most febrile seizures are benign and self-limiting; however, education regarding seizure management and potential recurrence is essential for caregivers.

2. Reye’s Syndrome

  • Pathophysiology: Reye’s syndrome is a rare but serious condition characterized by acute encephalopathy (brain swelling) and liver dysfunction. It typically develops following a viral illness, particularly when Aspirin (Salicylates) is used to treat fever. This syndrome can lead to severe neurological complications and requires immediate medical attention.

  • Medication for Cerebral Edema: Mannitol, an osmotic diuretic, is clinically significant in the management of cerebral edema as it effectively draws excess fluid out of the brain tissue, decreasing intracranial pressure (ICP) and thereby alleviating potential damage. Monitoring the effects and adjusting dosage based on the child's clinical status is crucial.

3. Bacterial Meningitis

  • Characteristic Rash: A critical clinical presentation of bacterial meningitis includes the presence of a petechial or purpuric rash, which appears non-blanching and may indicate life-threatening meningococcemia (bacterial infection of the bloodstream).

  • Precautions:

    • Bacterial Meningitis: Patients should be placed on droplet precautions (including the use of a surgical mask and private room) immediately upon suspicion and maintained for a minimum of 24 hours after the initiation of appropriate antibiotic therapy.

    • Viral Meningitis: Unlike bacterial causes, viral meningitis typically warrants standard precautions, as it is less contagious and self-limiting.

  • Age-Specific Symptoms:

    • Infants: Key symptoms may include bulging fontanels (the soft spots on an infant's head), high-pitched cries, fever, irritability, and paradoxical irritability (increasing distress when comforted).

    • Children/Adolescents: Symptoms can be more pronounced, marked by nuchal rigidity (stiff neck), fever, headache, altered mental status, and positive Kernig’s and Brudzinski’s signs, which indicate meningeal irritation.

4. Nursing Care: Seizures & Head Injury

  • Nursing Role During Seizure:

    • Documenting the start time and duration of the seizure is vital for management and treatment planning.

    • Maintain Airway: It is crucial to position the child in a side-lying position, which aids in airway maintenance and reduces the risk of aspiration during seizures.

    • Safety Precautions: Ensuring the child’s safety is paramount—protecting them from injury (e.g., padding rails) and never restraining the child or placing objects in their mouth during a seizure episode.

  • Postictal Period: Following a seizure, children may experience a postictal state characterized by sleepiness, confusion, disorientation, or headache. Maintaining airway safety and nursing vigilance until the child regains full consciousness is essential.

  • Head Injury Plan:

    • Keeping the head of the bed (HOB) elevated at 30 degrees helps reduce intracranial pressure. The head should be positioned midline to enhance venous drainage.

    • Monitoring for signs of “Cushing’s Triad” (increased blood pressure, bradycardia, and irregular respirations) is crucial as these signs could indicate deteriorating neurological status.

5. Hydrocephalus

  • Definition: Hydrocephalus is a condition that occurs due to an imbalance between cerebrospinal fluid (CSF) production and absorption, leading to an accumulation of fluid in the ventricles of the brain and increased ICP. This can lead to various neurological deficits if untreated.

  • Treatment: Surgical intervention is often required, specifically through the placement of a ventriculoperitoneal (VP) shunt, which diverts the excess CSF into the abdominal cavity, alleviating pressure on the brain. This procedure necessitates close follow-up and monitoring for shunt function.

SECTION 2: Endocrine Dysfunction

1. Growth Hormone (GH) Deficiency

  • Medication Administration: Growth Hormone (Somatropin) is administered via subcutaneous injection, typically in the fatty tissue, to enhance absorption and minimize discomfort.

  • Education: The treatment regime usually requires daily administration, often at bedtime to align with the natural growth hormone secretion patterns during sleep. Continuous assessment of growth progress is essential, and GH therapy is continued until the ossification of the growth plates (epiphyses) takes place, beyond which further administration is no longer effective.

2. Diabetes Mellitus (DM) Comparison

  • Type 1 Diabetes (Insulin-Dependent Diabetes Mellitus - IDDM)

    • Pathophysiology: This type of diabetes involves absolute insulin deficiency due to the autoimmune destruction of pancreatic beta cells, leading to the unregulated presence of glucose in the bloodstream.

    • Onset: The onset is typically abrupt, often presenting symptoms of polyuria, polydipsia, weight loss, and fatigue in childhood or adolescence.

    • Management: Treatment involves lifelong insulin therapy, which may include multiple daily injections or insulin pumps, combined with consistent dietary management and physical activity to stabilize blood glucose levels.

  • Type 2 Diabetes

    • Pathophysiology: Type 2 diabetes is characterized by insulin resistance or relative insulin deficiency, often associated with obesity, lifestyle factors, and genetic predisposition.

    • Onset: The onset is usually gradual and may present with milder symptoms, sometimes unnoticed for years, before complications arise.

    • Management: Management strategies include lifestyle modifications such as dietary changes, regular exercise, oral hypoglycemic agents, or insulin therapy when necessary to maintain target blood glucose levels.

3. Home Management of IDDM

  • Sick Day Rules: It's crucial to continue administering insulin during illness, as illness typically increases glucose levels. Frequent monitoring of blood sugar levels and ketones is imperative to prevent complications.

  • Exercise Considerations: To prevent hypoglycemia during exercise, it is recommended to consume an additional 15-20 grams of fast-acting carbohydrates before engaging in vigorous physical activity.

  • Hypoglycemia Management (The "Rule of 15"):

    • Administer 15 grams of fast-acting carbohydrates—examples include juice, glucose tablets, or candies.

    • After 15 minutes, recheck blood glucose levels; if levels remain below 70 mg/dL, repeat the administration process.

  • Diabetic Ketoacidosis (DKA): DKA is a medical emergency characterized by severe hyperglycemia, acidosis, and ketonemia, with symptoms including Kussmaul respirations, fruity odor of breath, and significant dehydration.

    • Priority Management: Initial management involves administering intravenous fluids (Normal Saline) to restore hydration, followed by the careful administration of Regular Insulin via IV. Continuous monitoring of potassium levels is critical throughout treatment, given the risk of hypokalemia as insulin drives potassium into the cells.