Hyperoxemia among Pediatric Intensive Care Unit Patients Receiving Oxygen Therapy.

Area of Science:

• Pediatric critical care medicine
• Respiratory physiology
• Patient safety in intensive care

Background:

• Supratherapeutic oxygen levels can cause organ toxicity.
• The prevalence and severity of hyperoxemia in pediatric intensive care unit (PICU) patients are not well understood.

Purpose of the Study:

• To determine the prevalence and duration of hyperoxemia in pediatric patients receiving oxygen therapy in the PICU.

Main Methods:

• Retrospective chart review of patients under 18 years old admitted to a 36-bed PICU.
• Inclusion criteria: admission ≥24 hours, oxygen therapy ≥12 hours, and at least one arterial blood gas measurement.
• Data collected on oxygen therapy duration, hyperoxemia incidence, and oxygen delivery parameters.

Main Results:

• 614 of 5,251 PICU patients met inclusion criteria.
• Patients received oxygen therapy 91% of PICU time and were hyperoxemic 65% of that time.
• Median hyperoxemia duration was 38 hours per patient; only 1.1% had no hyperoxemia. Mean PaO2 was 108.7 torr, with 42.1% >100 torr.

Conclusions:

• PICU patients on oxygen therapy are commonly exposed to prolonged hyperoxemia, even with relatively low fraction of inspired oxygen (FiO2).
• This sustained hyperoxemia may contribute to ongoing organ injury in critically ill children.
• Further research is needed to optimize oxygen therapy and mitigate risks.