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Pediatric Pulmonology Glossary

103 terms total — 24 showing — Last updated 15 Sep 2026

Lung Clearance Index LCI

Advanced Technical IVT

A measure of ventilation inhomogeneity derived from multiple-breath washout testing, reflecting how efficiently a gas (typically nitrogen or sulfur hexafluoride) is cleared from the lungs.

Showing 73–96 of 103

pulmonary atresia

Advanced Technical IVT

Congenital heart defect where the pulmonary valve fails to develop properly, blocking blood flow from the right ventricl...

Congenital Anomaly Full entry →

pulmonary exacerbation

Intermediate Technical IVT

An acute worsening of respiratory symptoms and lung function beyond a patient's normal day-to-day variation, requiring a...

Technical Term Full entry →

pulmonary function test

Intermediate Technical IVT

A group of tests measuring lung capacity, airflow, and gas exchange to assess respiratory function.

Document Type Full entry →

pulmonary hypoplasia

Advanced Technical IVT

Underdevelopment of one or both lungs, resulting in reduced lung volume and alveolar number.

Medical Condition Full entry →

pulmonary interstitial emphysema

Professional Technical IVT

Condition where air leaks into the lung tissue spaces, particularly in premature infants on mechanical ventilation.

Pathological Process Full entry →

Rare genetic disorder affecting surfactant protein production, causing severe neonatal and childhood respiratory disease...

Genetic Disorder Full entry →

An infant lung function maneuver in which the lungs are inflated to a standardised pressure before a jacket rapidly comp...

Technical Term Full entry →

reactive airway disease

Intermediate Technical IVT

Non-specific term describing reversible airway obstruction in children too young for definitive asthma diagnosis.

Clinical Diagnosis Full entry →

Residual Volume

Intermediate Technical IVT

The volume of air remaining in the lungs after a maximal forced exhalation, which cannot be expelled voluntarily.

RV
Technical Term Full entry →

respiratory distress syndrome

Intermediate Technical IVT

Condition primarily affecting premature infants caused by surfactant deficiency leading to alveolar collapse and respira...

Technical Term Full entry →

respiratory syncytial virus

Intermediate Technical IVT

A common viral infection causing bronchiolitis and pneumonia in infants and young children.

RSV
Technical Term Full entry →

slide tracheoplasty

Professional Technical IVT

A surgical technique for congenital tracheal stenosis in which the stenotic segment is divided transversely at its midpo...

Technical Term Full entry →

spirometry

Intermediate Technical IVT

Pulmonary function test measuring lung volumes and airflow rates, requiring patient cooperation and typically performed...

Diagnostic Test Full entry →

stridor

Intermediate Technical IVT

High-pitched, harsh respiratory sound caused by turbulent airflow through narrowed airways, indicating potential airway...

Technical Term Full entry →

subglottic stenosis

Advanced Technical IVT

Narrowing of the airway below the vocal cords, either congenital or acquired, causing stridor and breathing difficulties...

SGS
Medical Condition Full entry →

surfactant deficiency

Professional Technical IVT

A condition in premature infants where insufficient lung surfactant leads to respiratory distress syndrome.

Technical Term Full entry →

Sweat Chloride Test

Intermediate Semi-formal IVT

The gold-standard diagnostic test for cystic fibrosis, measuring the concentration of chloride ions in sweat collected b...

Technical Term Full entry →

tachypnea

Intermediate Technical IVT

Abnormally rapid breathing rate exceeding age-appropriate normal values.

Clinical Sign Full entry →

Total Lung Capacity

Intermediate Technical IVT

The maximum volume of air the lungs can contain after a maximal inspiratory effort, encompassing all lung subdivisions.

TLC
Technical Term Full entry →

tracheal agenesis

Professional Technical IVT

A rare, usually fatal congenital anomaly in which the trachea is absent or severely underdeveloped, typically associated...

Technical Term Full entry →

tracheal shift

Advanced Technical IVT

A physical examination finding in which the trachea is displaced laterally from the midline, indicating underlying media...

Technical Term Full entry →

tracheoesophageal fistula

Advanced Technical IVT

Abnormal connection between the trachea and esophagus, often congenital, requiring surgical intervention in neonates.

Technical Term Full entry →

tracheomalacia

Professional Technical IVT

A condition where tracheal cartilage is soft and floppy, causing airway collapse during breathing.

Technical Term Full entry →

tracheostomy

Advanced Technical IVT

Surgical procedure creating an opening in the anterior neck to establish a direct airway through the trachea.

Technical Term Full entry →
Showing 73–96 of 103

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