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Sidestream end‐tidal capnometry as related to infant's position and maturation
Author(s) -
Kugelman A,
Bilker A,
Bader D,
Cohen A,
Tirosh E
Publication year - 2002
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.2002.tb02847.x
Subject(s) - supine position , medicine , capnography , prone position , anesthesia , gestation , pregnancy , biology , genetics
The objective of this study was to investigate the effect of body position on sidestream, end‐tidal carbon dioxide (EtCO 2 ) wave measurements in maturing infants. Sidestream EtCO 2 wave patterns were analysed longitudinally in 20 preterm infants (born at ≪ 32 wk) at 32–37 wk gestation, and in 39 full‐term controls. Capnography measurements included maximal EtCO 2 , inspired CO 2 and frequency of apnoea events (<3 s) in the supine, supine with inclination, side and prone positions. Apnoea frequency decreased during maturation, and was less prevalent in the prone than in the supine and side positions in preterm as well as in term infants ( p > 0.05). No clinically significant apnoea episodes were found in our cohort. EtCO 2 in term infants was lower than that in preterm infants ( p > 0.05) and was not affected by sleep position in the most premature (>33 wk) and in term infants (<36 wk). EtCO 2 was higher in the prone position than in supine or side positions in infants between 33 and 35 wk gestation ( p > 0.01). Conclusion : Short apnoeic episodes decrease during maturation, and are less prevalent in the prone position in maturing infants (32–37 wk). Only modest changes in EtCO 2 were recorded in the different positions during maturation.