The newborn oxygram: automated processing of transcutaneous oxygen data

Area of Science:

• Neonatal Medicine
• Biomedical Engineering
• Respiratory Physiology

Background:

• Hypoxemic and hyperoxemic episodes are frequent in newborns suffering from respiratory disorders.
• Quantifying these oxygen fluctuations is crucial for effective clinical management and research.
• Existing monitoring methods may not fully capture the dynamic nature of these episodes.

Purpose of the Study:

• To develop and evaluate a microprocessor-based data system for quantifying transcutaneous oxygen (TcPO2) episodes in newborns.
• To introduce the concept of the 'oxygram' for automatic recording of time spent in preset TcPO2 ranges.
• To assess the clinical utility and research applications of this novel data system.

Main Methods:

• Development of a microprocessor-based system integrated with transcutaneous oxygen (TcPO2) monitors.
• Automatic recording of infant time spent within ten preset TcPO2 ranges, termed the oxygram.
• Monitoring of fourteen newborn infants for a total of 552 hours using the developed system.

Main Results:

• The system successfully recorded TcPO2 data, generating oxygrams for analysis.
• Newborn infants spent a mean of 2.96% of monitoring time with TcPO2 ≤ 40 torr (hypoxemia).
• Newborn infants spent a mean of 0.26% of monitoring time with TcPO2 > 100 torr (hyperoxemia).

Conclusions:

• The microprocessor-based data system effectively quantifies hypoxemic and hyperoxemic episodes in newborns.
• The oxygram provides a valuable quantitative measure for assessing oxygenation in neonates with respiratory disorders.
• This system has significant potential for both clinical monitoring and research in neonatal respiratory care.