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Large-airway collapse due to acquired tracheobronchomalacia in infancy
Insights
Tracheobronchomalacia, a condition causing airway narrowing in infants, is effectively treated with long-term positive end-expiratory pressure (PEEP). This approach improved symptoms and reduced the need for mechanical ventilation in a small study group.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Neonatology
Background:
- Tracheobronchomalacia is a condition characterized by excessive dynamic airway collapse.
- Infants, particularly premature infants with a history of mechanical ventilation for hyaline membrane disease, are susceptible.
- Diagnosis often involves bronchoscopy or fluoroscopy, revealing significant airway narrowing during exhalation.
Purpose of the Study:
- To investigate the efficacy of positive end-expiratory pressure (PEEP) in managing infants diagnosed with tracheobronchomalacia.
- To evaluate the long-term outcomes of PEEP therapy in this patient population.
- To determine if PEEP is a superior treatment compared to tracheostomy alone.
Main Methods:
- Seven infants diagnosed with tracheobronchomalacia via bronchoscopy or fluoroscopy were studied.
- Optimal PEEP levels were determined during fluoroscopic examination.
- Patients were managed with long-term PEEP, with some requiring ongoing mechanical ventilation.
Main Results:
- All seven patients demonstrated improvement, with reduced cyanotic spells and decreased need for ventilatory support.
- Six patients required PEEP levels between 8 and 18 cm H2O for at least three months.
- Five patients continued to require mechanical ventilation, but with improved outcomes.
Conclusions:
- Long-term positive end-expiratory pressure (PEEP) appears to be the treatment of choice for tracheobronchomalacia in infants.
- Tracheostomy alone was not found to be beneficial.
- Tracheobronchomalacia may be underdiagnosed, and PEEP management is crucial for improving respiratory support.
Abstract:
Seven infants with wheezing and cyanotic spells were diagnosed as having tracheobronchomalacia by bronchoscopy or fluoroscopy. These studies demonstrated narrowing of the central airways by 75% or more on exhalation. Five patients were premature infants who had been ventilated for hyaline membrane disease. The mean time from onset of symptoms to diagnosis was six months. Determination of the optimal positive end-expiratory pressure (PEEP) during fluoroscopy facilitated subsequent management. Six of the seven patients required PEEP of 8 to 18 cm H2O for at least three months, and five of the seven still require mechanical ventilation. All patients improved, with decreased cyanotic spells and a reduced requirement for ventilatory support. Tracheostomy without PEEP did not appear to be helpful. Tracheobronchomalacia may be more frequent than usually appreciated; the treatment of choice appears to be long-term PEEP.
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