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Fig. 2 | BMC Pregnancy and Childbirth

Fig. 2

From: Maternal plasma levels of oxytocin during physiological childbirth – a systematic review with implications for uterine contractions and central actions of oxytocin

Fig. 2

Schematic figure of oxytocin levels (relative values), and oxytocin pulse frequency, averaged over 30 min, in pregnancy and physiological labour and birth. Data compiled from Fuchs 1991 [31] in relation to: term pregnancy (1); first stage labour (2); second stage labour (3). Data in relation to birth (4) compiled from studies cited in Box 1: Rise of oxytocin levels in connection with birth

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