Mechanical ventilation in pediatric intensive care units during the season for acute lower respiratory infection: a multicenter study.

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.

Pertussis: should we improve intensive care management or vaccination strategies?

Bordetella pertussis, responsible for one of the oldest vaccine-preventable diseases in children, has resurged in North America, Europe, Latin America and many countries around the world. Despite new recommended vaccination strategies for adolescents, pregnant women and adults, mortality is still significant in developing and developed countries. For the critical care management of the infant with pertussis, strategies include conventional ventilation, high-frequency oscillatory ventilation, extracorporeal membrane oxygenation, inhaled nitric oxygen, exchange transfusion, plasmapheresis and, more recently, leukodepletion. The paper under evaluation describes the experience of UK investigators in the management of pertussis with rapid leukodepletion for infants with extreme leukocytosis. Using this strategy, a rapid fall in the number of leukocytes was observed in these patients. Their results suggest that rapid leukodepletion should be considered in severely ill infants with pertussis and severe leukocytosis.