Related Experiment Video
Updated: Mar 31, 2026
Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
Early High-Frequency Oscillatory Ventilation in Pediatric Acute Respiratory Failure. A Propensity Score Analysis
Scot T Bateman1, Santiago Borasino2, Lisa A Asaro3
11 Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts.
Insights
Early high-frequency oscillatory ventilation (HFOV) for pediatric acute respiratory failure may prolong mechanical ventilation duration. This study found no significant impact on mortality, questioning current HFOV treatment approaches.
Area of Science:
- Pediatric Critical Care Medicine
- Respiratory Physiology
- Mechanical Ventilation Strategies
Background:
- High-frequency oscillatory ventilation (HFOV) is widely used for pediatric acute respiratory failure.
- However, robust data on its efficacy is limited.
- This study investigates the impact of early HFOV initiation.
Purpose of the Study:
- To compare outcomes of early HFOV (within 24-48 hours) versus conventional mechanical ventilation (CMV) or late HFOV in children with acute respiratory failure.
- To analyze the association between early HFOV and duration of mechanical ventilation and mortality.
Main Methods:
- Secondary analysis of the prospective RESTORE clinical trial data (2009-2013).
- Utilized propensity score analysis, including hypoxia severity, to compare early HFOV with CMV/late HFOV groups.
- Included 1,064 patients with significant hypoxia (oxygenation index ≥ 8).
Main Results:
- Early HFOV was initiated in 210 of 353 patients (59%) receiving HFOV.
- The degree of hypoxia was the most significant factor in predicting early HFOV use.
- Early HFOV was associated with a longer duration of mechanical ventilation (HR 0.75; P=0.001) but not mortality (OR 1.28; P=0.15).
Conclusions:
- Adjusted analyses indicate early HFOV is linked to prolonged mechanical ventilation in pediatric acute respiratory failure.
- The findings challenge the current clinical approach favoring early HFOV.
- Further research is needed to clarify optimal ventilation strategies.
Rationale:
The use of high-frequency oscillatory ventilation (HFOV) for acute respiratory failure in children is prevalent despite the lack of efficacy data.
Objectives:
To compare the outcomes of patients with acute respiratory failure managed with HFOV within 24-48 hours of endotracheal intubation with those receiving conventional mechanical ventilation (CMV) and/or late HFOV.
Methods:
This is a secondary analysis of data from the RESTORE (Randomized Evaluation of Sedation Titration for Respiratory Failure) study, a prospective cluster randomized clinical trial conducted between 2009 and 2013 in 31 U.S. pediatric intensive care units. Propensity score analysis, including degree of hypoxia in the model, compared the duration of mechanical ventilation and mortality of patients treated with early HFOV matched with those treated with CMV/late HFOV.
Measurements And Main Results:
Among 2,449 subjects enrolled in RESTORE, 353 patients (14%) were ever supported on HFOV, of which 210 (59%) had HFOV initiated within 24-48 hours of intubation. The propensity score model predicting the probability of receiving early HFOV included 1,064 patients (181 early HFOV vs. 883 CMV/late HFOV) with significant hypoxia (oxygenation index ≥ 8). The degree of hypoxia was the most significant contributor to the propensity score model. After adjusting for risk category, early HFOV use was associated with a longer duration of mechanical ventilation (hazard ratio, 0.75; 95% confidence interval, 0.64-0.89; P = 0.001) but not with mortality (odds ratio, 1.28; 95% confidence interval, 0.92-1.79; P = 0.15) compared with CMV/late HFOV.
Conclusions:
In adjusted models including important oxygenation variables, early HFOV was associated with a longer duration of mechanical ventilation. These analyses make supporting the current approach to HFOV less convincing.
More Related Videos
Related Concept Videos
01:20Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
01:14Ventilatory Modes
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
01:21Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
01:29Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...
01:21Acute Respiratory Failure-I
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...