Related Experiment Video
Updated: Nov 2, 2025

A Structured Approach to Extubation in Mechanically Ventilated Rats
Published on: July 18, 2025
[Risk factors for the first ventilator weaning failure in preterm infants receiving invasive mechanical ventilation]
1Department of Neonatology, Peking University Third Hospital, Beijing 100191, China.
Insights
Ventilator weaning failure in preterm infants is linked to using multiple vasoactive agents and patent ductus arteriosus (PDA). Weaning failure is associated with poorer outcomes, including longer hospital stays and increased complications.
Area of Science:
- Neonatal Medicine
- Pediatric Critical Care
- Respiratory Medicine
Background:
- Preterm infants often require invasive mechanical ventilation.
- Ventilator weaning failure is a significant challenge in neonatal intensive care.
- Understanding risk factors for weaning failure is crucial for improving outcomes.
Purpose of the Study:
- To identify risk factors for the first ventilator weaning failure in preterm infants.
- To investigate the association between ventilator weaning failure and prognosis in this population.
Main Methods:
- Retrospective analysis of preterm infants receiving mechanical ventilation within 72 hours of birth.
- Infants were categorized into successful and failed weaning groups based on reintubation within 72 hours.
- Statistical analysis identified significant risk factors and outcome associations.
Main Results:
- Lower gestational age, birth weight, and higher rates of delivery room intubation were observed in the failed weaning group.
- Patent ductus arteriosus (PDA; diameter ≥ 2.5 mm) and use of ≥ 2 vasoactive agents were significant risk factors for weaning failure.
- Failed weaning was associated with increased rates of ventilator-associated pneumonia, bronchopulmonary dysplasia, sepsis, longer oxygen therapy, and hospitalization.
Conclusions:
- Use of multiple vasoactive agents and significant PDA are key risk factors for ventilator weaning failure in preterm infants.
- Ventilator weaning failure is linked to adverse outcomes, including increased morbidity and prolonged hospital stay.
Objective:
To study the risk factors for the first ventilator weaning failure and the relationship between the weaning failure and prognosis in preterm infants receiving invasive mechanical ventilation.
Methods:
A retrospective analysis was performed for the preterm infants who were admitted to the Neonatal Intensive Care Unit of Peking University Third Hospital and received mechanical ventilation within 72 hours after birth. According to whether reintubation was required within 72 hours after the first weaning, the infants were divided into a successful weaning group and a failed weaning group.
Results:
A total of 282 preterm infants were enrolled, and there were 43 infants (15.2%) in the failed weaning group. Compared with the successful weaning group, the failed weaning group had significantly lower gestational age and birth weight (P < 0.05), a significantly higher rate of intubation in the delivery room (P < 0.05), and a significantly higher proportion of infants with patent ductus arteriosus (PDA; diameter ≥ 2.5 mm) (P < 0.05). Use of ≥ 2 vasoactive agents before ventilator weaning (OR=2.48, 95%CI:1.22-5.03, P < 0.05) and PDA (≥ 2.5 mm) (OR=4.54, 95%CI:2.02-10.24, P < 0.05) were risk factors for ventilator weaning failure. Compared with the successful weaning group, the failed weaning group had significantly higher incidence rates of ventilator-associated pneumonia, moderate-to-severe bronchopulmonary dysplasia, and sepsis (P < 0.05). The oxygen inhalation time and hospital stay in the failed weaning group were significantly longer than those in the successful weaning group (P < 0.05).
Conclusions:
Use of ≥ 2 vasoactive agents before ventilator weaning and PDA (≥ 2.5 mm) are risk factors for ventilator weaning failure, and ventilator weaning failure may be associated with adverse outcomes in hospitalized preterm infants.
More Related Videos
08:223D Cine Magnetic Resonance Imaging of Respiratory Motion in Mechanically Ventilated Mice and Rats
Published on: September 19, 2025
06:22Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
Related Concept Videos
Mechanical Ventilation I: Indication and Settings
Mechanical Ventilation II: Invasive Ventilation
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Mechanical Ventilation III: Noninvasive Ventilation
Noninvasive Positive-Pressure Ventilation...
Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Acute Respiratory Failure-III