Effect of regional analgesia on maternal oxygen consumption during the first stage of labor

Sangoul, Firooz; Fox, Gordon S.; Houle, Germain L.

doi:10.1016/s0002-9378(16)33592-x

Cited by 43 publications

(8 citation statements)

References 16 publications

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“…3 Some changes have important implications for the baby. Maternal respiration increases by 75-150% during the first stage of unmodified labour; 4 this is associated with a number of maternal changes that may have adverse fetal effects: [4][5][6][7][8][9][10][11][12][13][14][15][16] Hypocarbia and a respiratory alkalosis. Increased oxygen consumption.…”

Section: Introductionmentioning

confidence: 99%

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Labour analgesia and the baby: good news is no news

Reynolds

2011

International Journal of Obstetric Anesthesia

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Section: Introductionmentioning

confidence: 99%

“…Increased oxygen consumption. 4,5 Under-ventilation between contractions, resulting in episodes of haemoglobin desaturation, which are more pronounced when systemic opioids are given. 9 Compensatory metabolic acidosis, which appears to be transferred readily to the fetus.…”

Section: Introductionmentioning

confidence: 99%

Labour analgesia and the baby: good news is no news

Reynolds

2011

International Journal of Obstetric Anesthesia

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“…Oxygen consumption may also be reduced during labour by effective regional analgesia following epidural or paracervical block. Sangoul, Fox and Houle (1975) demonstrated a mean 14% fall from 320 ml/min to 270 ml/min. This reduction was mirrored by similar falls in tidal volume and minute ventilation.…”

Section: Hypoxic Hypoxiamentioning

confidence: 95%

Foetal Hypoxia—An Anaesthetist's approach to Classification and Prevention

Brownridge¹

1978

Anaesth Intensive Care

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Nearly one third of perinatal deaths are due to hypoxia occurring during pregnancy and labour. M any factors contribute to foetal hypoxia and in order to group these into orderly categories a classification of hypoxia, which is familiar to anaesthetists, has been applied to the maternal and foetal circulations. This theoretical approach forms a logical guide to our understanding the cause, prevention and treatment of foetal hypoxia.

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“…2 Effective pain relief reduces plasma noradrenaline, 3 prevents metabolic acidosis by reducing the rate of rise of lactate and pyruvate, 4 prevents the rise during 1st and 2nd stage of labour of 11-hydroxy corticosteroid. 5 It decreases maternal oxygen consumption by upto 14%. 5 Analgesia in the form of regional techniques like epidural can relieve some degree of pain and the associated adverse pathophysiological changes.…”

Section: Introductionmentioning

confidence: 99%

Fetomaternal outcome in parturient women with and without epidural labour analgesia

Anupama¹

2019

IJCA

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Introduction: Labour analgesia is being preferred by the parturient women these days due to increased awareness, comfortness and low threshold to perceive pain. The effects of epidural and parenteral analgesia on duration and mode of deliveries have been studied since last few decades. Aim was to study the effects of epidural labour analgesia on the duration of labour, mode of delivery, fetal outcome and patient satisfaction and comfortness. This was a prospective, comparative and observational study. Material and Methods: One hundred parturient women with full term single live gestation with vertex presentation with spontaneous onset of labour, meeting the inclusion criteria were divided into two groups. Group C: Parturient women who opted out of labour analgesia were taken as controls. Group E: Parturient women who opted for labour analgesia were taken as cases. Statistical Analysis: Independent-Samples t test, Cross tabs and Repeated Measure ANOVA were used. SPSS for windows (version 17.0) was employed for data analysis. p<0.05 was considered as significant and p<0.01 considered as highly significant. Results: Demographic parameters like age, weight, height, BMI were comparable between the two groups E and group C (p>0.05) The gestational age between the groups C and E were comparable as p >0.05 No significant difference in Bishops score between Group E and Group C (p>0.05) There was no difference stastistically in terms of mode of delivery (Normal delivery, Instrumental delivery, Caesarean delivery) between the groups. Instrumental delivery was seen more in group E. No change in normal or ceasarean deliveries. Shortening of active phase was seen in group E (P <0.01 from 2 nd hour). Prolonged second stage of labour was seen in group E (P=0.001) which is statistically significant. Decreased pain score in group E with p value of 0.006 which is highly significant statistically. There was improvement of APGAR at 1 minute in group E with significant p value. No significant difference between the groups for APGAR score at 5 minute. No significant difference between the groups in terms of requirement of NICU admission. Conclusion: Many safe techniques are available for parturient women to bypass the painful labour process and enjoy the birth of the baby. Labour analgesia is one of the most commonly used method in developed countries. Due to lack of awareness and false perception of ending up in caesserian sections, labour analgesia has not gained much popularity in India. Our study aims to study the incidence of casserian sections, instrumental deliveries and the effects of labour analgesia in newborns. Epidural is a regional technique which is safe as to reduce the labour pain and to experience the joy of motherhood, without pain. The prs and cons of labour analgesia should be explained to al labour women and to be given an option of opting it to enjoy the process of painless labour.

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Effect of regional analgesia on maternal oxygen consumption during the first stage of labor

Cited by 43 publications

References 16 publications

Labour analgesia and the baby: good news is no news

Labour analgesia and the baby: good news is no news

Foetal Hypoxia—An Anaesthetist's approach to Classification and Prevention

Fetomaternal outcome in parturient women with and without epidural labour analgesia

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