OMSB Pediatrics (OEPEDS) study materials
OMSB Pediatrics (OEPEDS) study resources

OMSB Pediatrics (OEPEDS) key terms

OMSB Pediatrics (OEPEDS) · Get comfortable with the vocabulary.

Apgar score

A rapid 0-10 assessment done at 1 and 5 minutes after birth scoring heart rate, respiratory effort, muscle tone, reflex irritability, and color; it describes the newborn's condition and response to resuscitation, not a predictor of later outcome.

Related: Delayed cord clamping, Surfactant replacement therapy
Delayed cord clamping

Waiting roughly 30-60 seconds or more before clamping the umbilical cord in a vigorous newborn, allowing placental transfusion that raises iron stores and reduces transfusion need, while weighing a small increase in jaundice risk.

Related: Apgar score, Physiologic jaundice of the newborn
Surfactant replacement therapy

Instillation of exogenous surfactant into the trachea of a premature infant with respiratory distress syndrome to lower alveolar surface tension, improve lung compliance, and reduce air leak and mortality.

Related: Respiratory distress syndrome of prematurity, Continuous positive airway pressure
Respiratory distress syndrome of prematurity

Neonatal lung disease caused by surfactant deficiency, presenting soon after birth with tachypnea, grunting, retractions, and hypoxemia; chest radiograph shows low lung volumes and a diffuse reticulogranular pattern.

Related: Surfactant replacement therapy, Continuous positive airway pressure
Continuous positive airway pressure

Delivery of a steady distending pressure to spontaneously breathing infants through nasal prongs or mask, keeping alveoli open, reducing work of breathing, and often avoiding intubation in respiratory distress or apnea of prematurity.

Related: Surfactant replacement therapy, Apnea of prematurity
Apnea of prematurity

Pauses in breathing lasting 20 seconds or more, or shorter pauses with bradycardia or desaturation, in an infant born before about 37 weeks due to immature respiratory control; treated with caffeine citrate and respiratory support.

Related: Continuous positive airway pressure, Bronchopulmonary dysplasia
Bronchopulmonary dysplasia

Chronic lung disease of prematurity defined by ongoing oxygen or respiratory support at 36 weeks postmenstrual age, resulting from lung injury and arrested alveolar development; it predicts later wheezing and readmission.

Related: Apnea of prematurity, Continuous positive airway pressure
Physiologic jaundice of the newborn

Unconjugated hyperbilirubinemia appearing after the first 24 hours of life and peaking around days 3-5, reflecting immature bilirubin conjugation and increased red cell turnover; it is managed by monitoring against age-in-hours nomograms.

Related: Kernicterus, Delayed cord clamping
Kernicterus

Permanent neurologic injury from bilirubin deposition in the basal ganglia and brainstem, causing lethargy, poor feeding, hypertonia, hearing loss, and choreoathetoid cerebral palsy; prevention relies on timely phototherapy or exchange transfusion.

Related: Physiologic jaundice of the newborn, Exchange transfusion
Exchange transfusion

Removal and replacement of an infant's blood in aliquots to rapidly lower severe hyperbilirubinemia or treat severe anemia, used when phototherapy fails or bilirubin approaches exchange thresholds.

Related: Kernicterus, Physiologic jaundice of the newborn
Newborn screening

Population testing of dried blood spots and other samples in the first days of life for treatable conditions such as congenital hypothyroidism, phenylketonuria, hemoglobinopathies, and cystic fibrosis, plus hearing and pulse oximetry screening.

Related: Congenital hypothyroidism, Critical congenital heart disease screening
Congenital hypothyroidism

Deficient thyroid hormone production present at birth, often from thyroid dysgenesis; because signs are subtle, detection depends on newborn screening, and delayed treatment causes irreversible intellectual disability.

Related: Newborn screening, Thyroid function tests
Critical congenital heart disease screening

Pulse oximetry of the right hand and one foot before discharge to detect duct-dependent cardiac lesions; a positive result prompts echocardiography and evaluation for causes of hypoxemia other than heart disease.

Related: Newborn screening, Ductal-dependent lesion
Ductal-dependent lesion

Congenital heart defect in which pulmonary or systemic blood flow depends on a patent ductus arteriosus, such as transposition of the great arteries or severe pulmonary stenosis; closure causes rapid deterioration, so prostaglandin E1 is given.

Related: Critical congenital heart disease screening, Prostaglandin E1 infusion
Prostaglandin E1 infusion

Continuous intravenous alprostadil used to keep the ductus arteriosus open in suspected duct-dependent congenital heart disease; it can cause apnea, hypotension, and fever, so airway readiness is required.

Related: Ductal-dependent lesion, Critical congenital heart disease screening
Innocent murmur

A soft, systolic, musical or vibratory murmur in a well child without other findings, commonly heard at the left sternal border or pulmonary area; it varies with position and does not require echocardiography.

Related: Echocardiography, Kawasaki disease
Echocardiography

Ultrasound imaging of cardiac structure and blood flow used to confirm congenital defects, assess ventricular function, estimate pressures, and detect vegetations or effusions; it is the main noninvasive diagnostic tool in pediatric cardiology.

Related: Innocent murmur, Kawasaki disease
Kawasaki disease

An acute medium-vessel vasculitis of young children with fever lasting at least five days plus conjunctivitis, mucosal changes, rash, extremity changes, and cervical lymphadenopathy; coronary artery aneurysms make prompt intravenous immunoglobulin essential.

Related: Intravenous immunoglobulin, Echocardiography
Intravenous immunoglobulin

Pooled human antibody given for immune modulation in conditions such as Kawasaki disease and immune thrombocytopenia, and for antibody replacement; it is given with aspirin in Kawasaki disease to reduce coronary complications.

Related: Kawasaki disease
Asthma control assessment

Structured review of daytime symptoms, night waking, reliever use, and activity limitation over recent weeks to classify asthma as well controlled, partly controlled, or uncontrolled, guiding step-up or step-down of inhaled therapy.

Related: Inhaled corticosteroid, Metered-dose inhaler with spacer
Inhaled corticosteroid

Anti-inflammatory controller therapy delivered to the airways, the preferred long-term treatment for persistent pediatric asthma; regular use reduces exacerbations, and growth should be monitored.

Related: Asthma control assessment, Metered-dose inhaler with spacer
Metered-dose inhaler with spacer

A pressurized canister used with a valved holding chamber, the preferred delivery method for most children with asthma because it improves lung deposition and reduces oropharyngeal side effects compared with an inhaler alone.

Related: Inhaled corticosteroid, Asthma control assessment
Cystic fibrosis sweat chloride test

Pilocarpine iontophoresis to stimulate sweating, with chloride measured in collected sweat; a value of 60 mmol/L or more is diagnostic, 30-59 is intermediate, and the test supports diagnosis alongside genetic testing.

Related: Newborn screening, Bronchiectasis
Bronchiectasis

Irreversible dilation of bronchi with chronic cough and sputum production, in children often due to cystic fibrosis, post-infectious damage, or immunodeficiency; high-resolution computed tomography confirms it.

Related: Cystic fibrosis sweat chloride test
Croup

Viral laryngotracheitis, usually from parainfluenza virus, causing barking cough, hoarse voice, and inspiratory stridor; a single dose of oral dexamethasone is standard, with nebulized epinephrine for moderate or severe distress.

Related: Epiglottitis, Stridor
Epiglottitis

Acute supraglottic infection, now uncommon with vaccination, presenting with high fever, drooling, muffled voice, and tripod positioning; the airway must be secured by skilled staff without examining the throat first.

Related: Croup, Stridor
Stridor

A harsh inspiratory sound from turbulent airflow in a narrowed upper airway, indicating obstruction at or above the larynx; onset, position, and associated feeding or voice changes help localize the cause.

Related: Croup, Epiglottitis
Acute gastroenteritis with dehydration

Diarrhea and vomiting causing fluid loss, graded as mild, moderate, or severe by weight change, mental status, mucous membranes, tears, and capillary refill; oral rehydration is first-line when tolerated.

Related: Oral rehydration solution, Zinc supplementation in diarrhea
Oral rehydration solution

A balanced glucose-electrolyte drink exploiting sodium-glucose cotransport to promote water absorption, given in small frequent amounts for mild to moderate dehydration; it is preferred over intravenous fluids when the child can drink.

Related: Acute gastroenteritis with dehydration, Zinc supplementation in diarrhea
Zinc supplementation in diarrhea

Short courses of oral zinc given during acute diarrhea, which shorten duration and reduce recurrence in resource-limited settings; it is recommended by international guidelines alongside oral rehydration.

Related: Oral rehydration solution, Acute gastroenteritis with dehydration
Celiac disease serology

Testing for tissue transglutaminase IgA with total IgA to screen for celiac disease; diagnosis is confirmed by duodenal biopsy showing villous atrophy in most children, though protocols may omit biopsy in selected cases.

Related: Failure to thrive, Autoimmune hepatitis
Failure to thrive

Inadequate weight gain or growth in a child, judged against growth charts and often classified as organic or nonorganic; evaluation addresses intake, absorption, and increased metabolic demand.

Related: Celiac disease serology, Growth chart interpretation
Growth chart interpretation

Plotting weight, length or height, and head circumference over time against age and sex standards, using percentiles and z-scores to detect crossing of lines, which signals a change in growth velocity.

Related: Failure to thrive, Congenital hypothyroidism
Bilirubin nomogram

A chart of total serum bilirubin against age in hours with risk zones that guides decisions about phototherapy and repeat testing in newborns, interpreted together with gestational age and hemolytic risk factors.

Related: Physiologic jaundice of the newborn, Kernicterus
Autoimmune hepatitis

Chronic immune-mediated liver inflammation in children, often presenting with elevated transaminases, jaundice, or acute liver failure; diagnosis uses autoantibodies and biopsy, and treatment is immunosuppression.

Related: Celiac disease serology
Simple febrile seizure

A generalized seizure lasting under 15 minutes in a child aged 6 months to 5 years with fever, without prior afebrile seizures or central nervous system infection, and not recurring within 24 hours.

Related: Lumbar puncture, Status epilepticus
Status epilepticus

Continuous seizure activity or repeated seizures without recovery lasting 5 minutes or more, requiring immediate benzodiazepine therapy and airway support; prolonged seizures risk hypoxia, acidosis, and neuronal injury.

Related: Simple febrile seizure, Lumbar puncture
Lumbar puncture

Needle sampling of cerebrospinal fluid for cell count, protein, glucose, and culture, essential to exclude meningitis; it is deferred when signs of raised intracranial pressure or unstable cardiorespiratory status are present.

Related: Bacterial meningitis, Status epilepticus
Bacterial meningitis

Infection of the meninges, in children often from Streptococcus pneumoniae or Neisseria meningitidis, with fever, headache, neck stiffness, and altered mental status; empirical antibiotics must start immediately after cultures are drawn.

Related: Lumbar puncture, Sepsis in children
Sepsis in children

Life-threatening organ dysfunction from a dysregulated response to infection, recognized by fever or hypothermia, tachycardia, poor perfusion, and altered mentation; treatment is prompt antibiotics and fluid resuscitation.

Related: Bacterial meningitis, Pediatric early warning score
Pediatric early warning score

A bedside tally of vital signs and observations that flags children at risk of deterioration, triggering escalation of care; it supports timely review rather than replacing clinical judgment.

Related: Sepsis in children, Status epilepticus
Diabetic ketoacidosis in children

Insulin deficiency with ketosis, hyperglycemia, and acidosis, presenting with vomiting, dehydration, and Kussmaul breathing; management requires careful fluid and insulin titration because cerebral edema is a serious complication.

Related: Thyroid function tests, Growth chart interpretation
Thyroid function tests

Measurement of thyroid-stimulating hormone and free thyroxine to classify thyroid disease; in children they guide diagnosis of congenital and acquired hypothyroidism and monitoring of treatment dose.

Related: Congenital hypothyroidism, Growth chart interpretation
Developmental surveillance

Ongoing clinical process of eliciting parental concerns and observing milestones at every visit, distinct from formal screening tests, to detect developmental delay early and trigger referral.

Related: Growth chart interpretation, Failure to thrive