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Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
Published on: December 5, 2025
Randomized, controlled trial comparing synchronized intermittent mandatory ventilation and synchronized intermittent
Zenaida C Reyes1, Nelson Claure, Markus K Tauscher
1Division of Newborn Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33101, USA.
Pediatrics
|October 4, 2006
Summary
Adding pressure support to synchronized intermittent mandatory ventilation (SIMV) may reduce mechanical ventilation duration in preterm infants. This approach also showed potential for decreased oxygen dependency in infants weighing 700-1000g.
Area of Science:
- Neonatal Medicine
- Respiratory Physiology
- Pediatric Critical Care
Background:
- Prolonged mechanical ventilation can cause lung injury in preterm infants.
- Weaning from synchronized intermittent mandatory ventilation (SIMV) may be challenging due to respiratory load intolerance.
- Pressure support can help manage respiratory loads and facilitate weaning.
Purpose of the Study:
- To compare SIMV with SIMV plus pressure support for weaning mechanical ventilation.
- To evaluate the duration of supplemental oxygen dependency in preterm infants with respiratory failure.
Main Methods:
- Randomized controlled trial involving preterm infants (500-1000g) requiring mechanical ventilation.
- Infants were assigned to either SIMV or SIMV plus pressure support.
- Weaning protocols were followed for the first 28 days, with outcomes assessed until discharge or death.
Main Results:
- No significant differences in mortality or morbidity between groups.
- Infants receiving SIMV plus pressure support achieved minimal ventilator settings and were extubated earlier.
- While overall oxygen dependency did not differ, infants in the 700-1000g birth weight strata showed shorter oxygen dependency with SIMV plus pressure support.
Conclusions:
- Pressure support added to SIMV during the first 28 days may reduce mechanical ventilation duration in extremely low birth-weight infants.
- This strategy may decrease oxygen dependency in preterm infants weighing 700-1000g.
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