Lower body temperatures in infants delivered by caesarean section than in vaginally delivered infants

Christensson, Kyllike; Siles, C; Cabrera, T; Belaustequi, A; Fuente, P. de la; Lagercrantz, Hugo; P, Puyol Buil; Winberg, Jan

doi:10.1111/j.1651-2227.1993.tb12622.x

Cited by 65 publications

(40 citation statements)

References 9 publications

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“…Also, the rapid decrease of PaCO 2 and increase of PaO 2 occurring during the first minutes of life 18 could play a role in the short reduction of cerebral blood flow observed in the neonates, but we did not find significant changes of arterial oxygen saturation and transcutaneous carbon dioxide tension in our infants. Thus, we cannot confirm that arterial oxygen saturation is lower in infants born by caesarean section than in vaginally delivered infants, as reported in a previous study 19 .…”

Section: Discussioncontrasting

confidence: 66%

Haemodynamic changes in the brain after vaginal delivery and caesarean section in healthy term infants

Dani¹

2002

BJOG: An International Journal of Obstetrics and Gynaecology

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Objective To investigate whether the mode of delivery may affect neonatal cerebral haemodynamics during the first hour of life. Design Prospective study.Sample Healthy infants with gestational age ! 37 weeks and birthweight appropriate for gestational age, born after uncomplicated pregnancy by vaginal delivery or elective caesarean section, two to five hours after the delivery. Methods Near infra-red spectroscopy was used to measure changes of oxygenated haemoglobin, deoxygenated haemoglobin, oxidized-reduced cytochrome aa3, and mean cerebral oxygen saturation (mixed cerebral oxygen saturation ¼ oxygenated haemoglobin/total haemoglobin). Changes in cerebral blood volume were calculated. Results Near infra-red spectroscopy data did not show significant differences between infants born by vaginal delivery or by caesarean section. There was a significant decrease of oxygenated haemoglobin and change of cerebral blood volume values at 120 and 180 minutes in both the groups, while deoxygenated haemoglobin and oxidized-reduced cytochrome aa3 were unchanged. Conclusions A decrease of cerebral blood volume occurs after birth and this occurs both in infants born by vaginal delivery and by caesarean section.

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Section: Discussioncontrasting

confidence: 66%

Haemodynamic changes in the brain after vaginal delivery and caesarean section in healthy term infants

Dani¹

2002

BJOG: An International Journal of Obstetrics and Gynaecology

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“…We have shown that, as is the case in infants (Christensson et al 1993), a critical factor determining body temperature after birth is route of delivery (Clarke et al 1997a). Lambs delivered per vaginam therefore do not exhibit a decline in colonic temperature, due in part to high plasma thyroid hormone concentrations and increased sympathetic activity resulting in an enhanced ability to generate heat in BAT (Clarke et al 1997a).…”

Section: Introductionmentioning

confidence: 99%

Influence of maternal dexamethasone administration on thermoregulation in lambs delivered by caesarean section

Clarke

Heasman²,

Symonds³

1998

Journal of Endocrinology

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We have previously shown that lambs delivered by caesarean section 1 week prematurely become hypothermic due to reduced brown adipose tissue function in conjunction with low plasma concentrations of cortisol and thyroid hormones. The present study therefore aimed to determine whether maternal dexamethasone (a synthetic corticosteroid) administration could improve thermoregulation in premature lambs to the extent that they become similar to term lambs. Lambs were either delivered by caesarean section into a warm (30 C; WD) or cool (15 C; CD) ambient temperature at 140 days of gestation, 2 days after maternal dexamethasone treatment, or at 146 days for controls. During the first 30 min of life the decline in colonic temperature was greater in dexamethasone treated lambs compared with controls delivered into the same ambient temperature. All lambs then restored colonic temperature although this adaptation took longest in dexamethasone treated lambs CD but these subsequently attained highest plateau colonic temperatures. Oxygen consumption, breathing frequency and plasma free fatty acid concentrations were highest in dexamethasone treated lambs CD. There were no differences in plasma thyroid hormones between groups, but cortisol concentrations were lower in dexamethasone treated lambs irrespective of delivery temperature. Analysis of brown adipose tissue samples at 6 h of life demonstrated that dexamethasone treated lambs WD had more uncoupling protein and, in both dexamethasone treated and control lambs, uncoupling protein content was higher in lambs CD compared with those WD. An effect of ambient temperature on thermogenic activity was only observed in the dexamethasone treated group. It is concluded that maternal dexamethasone treatment can significantly improve thermoregulation after birth following premature delivery by caesarean section. As a consequence, dexamethasone treated lambs delivered 1 week prematurely do not remain hypothermic and have higher or similar colonic temperatures compared with untreated lambs born 1-2 days before term.

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“…20,21 Other negative consequences for newborns delivered via elective caesarean section are hypoglycaemia and low temperature. 22,23 Moreover, studies have indicated that caesarean sections may lead to delayed breastfeeding, shorter period of breastfeeding, and difficulties in maternal bonding with the newborn. 24 However, findings related to maternal attachment to infants are inconclusive.…”

Section: Introductionmentioning

confidence: 99%

Maternal and infant outcome after caesarean section without recorded medical indication: findings from a Swedish case–control study

Karlström

Lindgren

Hildingsson

2013

BJOG

134

109

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Objective To compare maternal complications and infant outcomes for women undergoing elective caesarean sections based on a maternal request and without recorded medical indication with those of women who underwent spontaneous onset of labour with the intention to have a vaginal birth.Design Retrospective register study.Setting Sweden; Medical Birth Register used for data collection.Methods A case-control study of 5877 birth records of women undergoing caesarean sections without medical indication and a control group of 13 774 women undergoing births through spontaneous onset of labour. The control group was further divided into women who actually had a vaginal birth and women who ended up with an emergency caesarean section.Results Maternal complications occurred more frequently among women undergoing caesarean section with odds ratios (OR) for bleeding complications of 2.5 (95% CI 2.1-3.0) in the elective caesarean group and 2.0 (95% CI 1.5-2.6) in the emergency caesarean group. The OR for infections was 2.6 in both groups. Breastfeeding complications were most common in women having an elective caesarean section: 6.8 (95% CI 3.2-14.5). Infant outcomes showed a higher incidence of respiratory distress with an OR of 2.7 (95% CI 1.8-3.9) in the elective caesarean section group compared with infants born by emergency caesarean section. The risk of hypoglycaemia was at least twice as high for infants in the caesarean group.Conclusions Caesarean sections without medical indication as well as emergency caesarean sections were associated with higher risks for maternal and infant morbidity.

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Lower body temperatures in infants delivered by caesarean section than in vaginally delivered infants

Cited by 65 publications

References 9 publications

Haemodynamic changes in the brain after vaginal delivery and caesarean section in healthy term infants

Haemodynamic changes in the brain after vaginal delivery and caesarean section in healthy term infants

Influence of maternal dexamethasone administration on thermoregulation in lambs delivered by caesarean section

Maternal and infant outcome after caesarean section without recorded medical indication: findings from a Swedish case–control study

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