Related Experiment Videos
Acid-base balance in small premature infants (less than 1500 grams) with type II RDS
Insights
This study on premature infants with respiratory distress syndrome (RDS) found that while blood gas correction occurred early, clinical improvement and resolution of respiratory distress took longer. Most infants recovered fully, though some experienced prolonged symptoms.
Area of Science:
- Neonatology
- Pediatric Respiratory Medicine
- Critical Care
Background:
- Premature infants often experience respiratory distress syndrome (RDS).
- Type II RDS presents specific clinical and radiological features.
- Understanding the temporal course of RDS is crucial for management.
Purpose of the Study:
- To investigate the clinical course and physiological parameters in premature infants with Type II RDS.
- To correlate blood gas changes, clinical scores, and respiratory function over time.
Main Methods:
- Studied 21 small premature infants diagnosed with Type II RDS.
- Monitored clinical RDS scores and blood gas parameters (pH, PaCO2).
- Assessed alveolar-arterial oxygen difference (AaDO2) and shunt fraction (Qs/Qt).
Main Results:
- Blood pH correction and PaCO2 decrease observed within 8 hours.
- Clinical improvement (RDS score) noted after 12 hours.
- AaDO2 and Qs/Qt were initially elevated and decreased after 48 hours.
Conclusions:
- Premature infants with Type II RDS show early physiological correction but delayed clinical improvement.
- Complete recovery is typical, but respiratory distress may persist for up to 72 hours.
- Persistent alterations in AaDO2 and Qs/Qt suggest ongoing respiratory compromise.
Abstract:
Twenty-one small premature infants with clinical features and radiological findings of type II RDS were studied. Correction of blood pH, corresponding with the decrease of blood PaCO2, was usually seen in the first eight hours of age. Clinical inprovement, as judged by the RDS score, was noted only after 12 hours of age. Complete recovery was the rule although signs of respiratory distress in a few infants lasted for 48-72 hours. The calculated AaDO2 and total Qs/Qt weer slightly higher (27.8%) than reported in normal infants and remained unchanged until after 48 hours of age when it decreased to 24.5%.