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Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
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Closed-loop automatic oxygen control (CLAC) in preterm infants: a randomized controlled trial.

Antonietta Hallenberger1, Christian Friedrich Poets, Werner Horn

  • 1Department of Neonatology, University Children's Hospital, Tuebingen, Germany;

Pediatrics
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Summary

Closed-loop automatic control (CLAC) of fraction of inspired oxygen (FIO2) improved oxygen saturation in preterm infants compared to routine manual control (RMC). This system also reduced the workload for healthcare providers managing supplemental oxygen therapy.

Keywords:
controllerhyperoxiahypoxiaventilation

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Area of Science:

  • Neonatal Medicine
  • Respiratory Care
  • Medical Technology

Background:

  • Manual control of fraction of inspired oxygen (FIO2) in preterm infants is challenging and time-consuming.
  • A closed-loop automatic control (CLAC) system for FIO2 was previously shown to be safe and effective short-term.
  • Evaluating CLAC's efficacy over 24 hours under routine conditions is crucial.

Purpose of the Study:

  • To test if CLAC is more effective than routine manual control (RMC) in maintaining target arterial oxygen saturation levels in preterm infants.
  • To assess the impact of CLAC on the workload associated with FIO2 adjustments.
  • To evaluate CLAC's performance over a 24-hour period in a multicenter setting.

Main Methods:

  • A multicenter, randomized controlled, crossover trial involving 34 preterm infants.
  • Infants received mechanical ventilation or nasal continuous positive airway pressure with supplemental oxygen.
  • Twenty-four-hour periods of RMC were compared with 24-hour periods of RMC supported by CLAC.

Main Results:

  • The percentage of time with arterial oxygen saturation within the target range was significantly higher with CLAC (71.2%) compared to RMC (61.4%).
  • CLAC led to a significant reduction in the number of manual FIO2 adjustments required.
  • The system demonstrated effectiveness in maintaining oxygenation targets over extended periods.

Conclusions:

  • Closed-loop automatic control (CLAC) of FIO2 improves oxygen administration in preterm infants.
  • CLAC reduces the workload for healthcare professionals managing oxygen therapy.
  • This technology offers a promising approach to optimize respiratory support for vulnerable neonates.