Exhaled Carbon Dioxide and Neonatal Breathing Patterns in Preterm Infants after Birth - 24/09/15
Abstract |
Objectives |
To examine the amount of exhaled carbon dioxide (ECO2) with different breathing patterns in spontaneously breathing preterm infants after birth.
Study design |
Preterm infants had a facemask attached to a combined carbon dioxide/flow sensor placed over their mouth and nose to record ECO2 and gas flow. A breath-by-breath analysis of the first 5 minutes of the recording was performed.
Results |
Thirty spontaneously breathing preterm infants, gestational age (mean ± SD) 30 ± 2 weeks and birth weight 1635 ± 499 g were studied. ECO2 from normal breaths and slow expirations was significantly larger than with other breathing patterns (P < .001). ECO2 per breath also increased with gestational age P < .001. The expiratory hold pattern was the most prevalent breathing pattern both during the first minute of recording and overall. Breathing pattern proportions also varied by gestational age. Finally, ECO2 from the fifth minute of recording was significantly greater than that produced during the first 4 minutes of recording (P ≤ .029).
Conclusions |
ECO2 varies with different breathing patterns and increases with gestational age and over time. ECO2 may be an indicator of lung aeration and that postnatal ECO2 monitoring may be useful in preterm infants in the delivery room.
Le texte complet de cet article est disponible en PDF.Keyword : CO2, CPAP, ECO2, FRC, PIF, PPV, VT
Plan
| J.N. received a Women & Children's Health Research Institute Resident Trainee Research Grant and a Neonatal Resuscitation Program partial Young Investigator Award. V.R. is supported by an Alberta Innovates Health Solutions Studentship and a Canadian Institutes of Health Research Doctoral Award. M.O. is supported by a Molly Towell Fellowship. G.S. is a recipient of the Heart and Stroke Foundation/University of Alberta Professorship of Neonatal Resuscitation and a Heart and Stroke Foundation of Canada Scholarship. The authors declare no conflicts of interest. |
Vol 167 - N° 4
P. 829 - octobre 2015 Retour au numéro
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