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Updated: Apr 21, 2026

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Risk factors for ventilator-associated pneumonia in infants and children: a cross-sectional cohort study
Denise Miyuki Kusahara1, Camila da Cruz Enz2, Ariane Ferreira Machado Avelar2
1Denise Miyuki Kusahara is a pediatric critical care nurse, Ariane Ferreira Machado Avelar is an adjunct professor, Maria Angélica Sorgini Peterlini and Mavilde da Luz Gonçalves Pedreira are associate professors, Pediatric Nursing Department, and Camila da Cruz Enz is a registered nurse and a former scientific initiation fellow, Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, Brazil. dkusahara@unifesp.br.
Insights
Ventilator-associated pneumonia in children is linked to nasoenteral tubes and vasoactive drugs. Prolonged stays in the pediatric intensive care unit also increase the risk of this serious infection.
Area of Science:
- Pediatric critical care medicine
- Infectious disease epidemiology
Background:
- Ventilator-associated pneumonia (VAP) epidemiology is well-documented in adults.
- Limited data exists on VAP risk factors specifically in pediatric populations.
Purpose of the Study:
- To identify predisposing factors for ventilator-associated pneumonia in children.
- To inform targeted prevention strategies in pediatric intensive care units.
Main Methods:
- Prospective cohort study of 96 pediatric patients in a 9-bed pediatric intensive care unit.
- Analysis included demographic, clinical, medication, nutritional, procedural, and mechanical ventilation variables.
- Statistical methods included logistic regression to determine independent risk factors.
Main Results:
- Nasoenteral tube use (OR, 5.278), intermittent nutritional formula (OR, 6.632), emergency reintubation (OR, 2.700), and vasoactive drug use (OR, 5.108) were associated with VAP.
- Increased duration of mechanical ventilation and longer pediatric intensive care unit (PICU) and hospital stays correlated with VAP occurrence.
- Independent risk factors identified were vasoactive drugs, nasoenteral tubes, and PICU length of stay.
Conclusions:
- Nasoenteral tube use, vasoactive drug administration, and prolonged PICU stay are independent risk factors for VAP in children.
- Findings highlight the need for vigilant monitoring and targeted interventions in vulnerable pediatric patients.
- Further research may explore specific interventions to mitigate these identified risks.
Background:
The epidemiology of ventilator-associated pneumonia is well described for adults, but little information is available on risk factors for this disease in children.
Objective:
To identify predisposing factors for ventilator-associated pneumonia in children.
Methods:
A cross-sectional prospective cohort study of 96 patients in a 9-bed pediatric intensive care unit was performed. Variables examined were demographic characteristics, inpatient care, medications, nutrition, invasive procedures, and characteristics of mechanical ventilation. Data were analyzed by using Pearson χ(2) analysis, Fisher exact and Mann-Whitney tests, odds ratios, and forward stepwise logistic regression.
Results:
Occurrence of ventilator-associated pneumonia correlated positively with use of nasoenteral tubes (odds ratio, 5.278; P < .001), intermittent administration of nutritional formula (odds ratio, 6.632; P = .005), emergency reintubation (odds ratio, 2.700; P = .02), use of vasoactive drugs (odds ratio, 5.108; P = .009), duration of mechanical ventilation (P < .001), and length of stay in the pediatric intensive care unit (P < .001) and in the hospital (P = .01).
Conclusion:
Use of vasoactive drugs, presence of a nasoenteral tube, and duration of stay in the pediatric intensive care unit were independent risk factors for ventilator-associated pneumonia.
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