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Pulmonary gas exchange during facemask ventilation immediately after birth
1Department of Paediatrics, Huddinge Hospital, Sweden.
Archives of Disease in Childhood
|January 1, 1993
Summary
Newborn resuscitation using facemask ventilation showed satisfactory outcomes when heart rate increased to 130 beats/min or oxygen saturation reached 70%. Carbon dioxide production (VCO2) varied by gestational age, indicating differences in metabolic response during resuscitation.
Area of Science:
- Neonatal Resuscitation
- Pediatric Physiology
- Respiratory Care
Background:
- Effective resuscitation is critical for newborns, especially preterm infants.
- Assessing ventilation adequacy during neonatal resuscitation is challenging.
- Carbon dioxide production (VCO2) may reflect metabolic status and response to ventilation.
Purpose of the Study:
- To evaluate the effectiveness of facemask ventilation in newborn infants.
- To correlate physiological parameters with successful resuscitation.
- To investigate the relationship between gestational age and VCO2 during resuscitation.
Main Methods:
- Recorded VCO2, heart rate, and oxygen saturation in 30 neonates during resuscitation.
- Infants received facemask ventilation, with two intubated.
- Classified infants by gestational age: full term, 32-36 weeks, and 27-31 weeks.
Main Results:
- Ventilation was considered satisfactory if heart rate reached ≥130 bpm within 5-15 seconds or oxygen saturation was ≥70%.
- Infants born at ≥32 weeks showed comparable VCO2 to spontaneously breathing infants by study end.
- Preterm neonates (27-31 weeks) exhibited lower VCO2, which increased significantly with reflex responses.
Conclusions:
- Facemask ventilation can be effective for neonatal resuscitation, with specific heart rate and oxygen saturation targets indicating success.
- Gestational age influences metabolic response (VCO2) during resuscitation, with younger preterm infants showing lower production.
- Monitoring VCO2 alongside heart rate and oxygen saturation may offer further insights into resuscitation effectiveness, particularly in preterm neonates.