Related Experiment Video
Updated: Jan 9, 2026

Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
Published on: June 28, 2018
Comparing COVID-19 Variants in Children Hospitalized for Concern of Tracheostomy-associated Infection: A Multicenter
Ilana Moffet1, Naoko Kono2, Margaret Rush3,4
1From the George Washington University School of Medicine and Health Sciences, Washington, District of Columbia.
Abstract:
In this ancillary study of a larger, prospective cohort study, we sought to compare presentation and outcomes of COVID-19 infections by variant (alpha, delta, and omicron) in 103 children with tracheostomy (108 admissions) hospitalized for concern of bacterial tracheostomy-associated infection. Dexamethasone use was significantly higher with delta compared to alpha (78% vs. 40%; OR, 5.5; P = 0.04). Increased oxygen (76%-89%) and ventilatory support during hospitalization (35-67%) were noted across all variants. Death occurred in 3%-6% of patients.
Related Concept Videos
Pneumonia III: Complications and Assessment
Tracheostomy: Procedure and Tubes
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
Tracheostomy Care II: Procedure
Step 1: Perform hand hygiene, and put on personal protective equipment: gown, gloves, mask...
Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Acute Respiratory Failure-III
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History

