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Mechanical ventilation in pediatric intensive care units during the season for acute lower respiratory infection: a
Julio A Farias1, Analía Fernández, Ezequiel Monteverde
1Hospital de Niños R Gutiérrez, CABA, Argentina. jufarias@intramed.net.ar
Insights
During acute lower respiratory infection season, half of pediatric intensive care unit admissions need mechanical ventilation, primarily for acute respiratory failure. The spontaneous breathing trial is the preferred method for weaning patients off mechanical ventilation.
Area of Science:
- Pediatric critical care medicine
- Respiratory medicine
- Mechanical ventilation
Background:
- The season of acute lower respiratory infections (ALRI) significantly impacts pediatric intensive care unit (PICU) admissions.
- Mechanical ventilation (MV) is a critical intervention for critically ill children during ALRI season.
Purpose of the Study:
- To characterize the use and outcomes of mechanical ventilation in PICUs during the ALRI season.
- To identify the primary indications for MV and common liberation strategies.
Main Methods:
- A prospective cohort study was conducted in 60 medical-surgical PICUs.
- Consecutive infants and children requiring MV for at least 12 hours during a 28-day period were enrolled.
Main Results:
- 55% of 2,156 PICU admissions received MV (median 5 days), with acute respiratory failure being the main indication (78%).
- Overall PICU mortality was 13%, rising to 39% in patients with acute respiratory distress syndrome (ARDS).
- The spontaneous breathing trial (SBT) was used in 62% of liberation attempts, while gradual ventilatory support reduction was used in 37%.
Conclusions:
- Mechanical ventilation is frequently required for children admitted to PICUs during ALRI season, predominantly due to acute respiratory failure.
- Mortality is significantly higher in pediatric patients with ARDS requiring MV.
- The spontaneous breathing trial is the most prevalent method for weaning patients from mechanical ventilation.
Objective:
To describe the characteristics and outcomes of mechanical ventilation in pediatric intensive care units during the season of acute lower respiratory infections.
Design:
Prospective cohort of infants and children receiving mechanical ventilation for at least 12 hrs.
Setting:
Sixty medical-surgical pediatric intensive care units.
Patients:
All consecutive patients admitted to participating pediatric intensive care units during a 28-day period.
Measurements And Main Results:
Of 2,156 patients admitted to pediatric intensive care units, 1185 (55%) received mechanical ventilation for a median of 5 days (interquartile range 2-8). Median age was 7 months (interquartile range 2-25). Main indications for mechanical ventilation were acute respiratory failure in 78% of the patients, altered mental status in 15%, and acute on chronic pulmonary disease in 6%. Median length of stay in the pediatric intensive care units was 10 days (interquartile range 6-18). Overall mortality rate in pediatric intensive care units was 13% (95% confidence interval: 11-15) for the entire population, and 39% (95% confidence interval: 23 - 58) in patients with acute respiratory distress syndrome. Of 1150 attempts at liberation from mechanical ventilation, 62% (95% confidence interval: 60-65) used the spontaneous breathing trial, and 37% (95% confidence interval: 35-40) used gradual reduction of ventilatory support. Noninvasive mechanical ventilation was used initially in 173 patients (15%, 95% confidence interval: 13-17).
Conclusion:
In the season of acute lower respiratory infections, one of every two children admitted to pediatric intensive care units requires mechanical ventilation. Acute respiratory failure was the most common reason for mechanical ventilation. The spontaneous breathing trial was the most commonly used method for liberation from mechanical ventilation.
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