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Randomized Controlled Trial
. 2024 Apr;79(4):357-367.
doi: 10.1111/anae.16178. Epub 2023 Nov 21.

The association between epidural labour analgesia and postpartum depression: a randomised controlled trial

H S Tan  1   2 , C W Tan  1   2 , R Sultana  3 , H Y Chen  4   5 , T Chua  4   5 , N Rahman  6   7 , M Gandhi  3   6 , A T H Sia  1   2 , B L Sng  1   2
Affiliations
Randomized Controlled Trial

The association between epidural labour analgesia and postpartum depression: a randomised controlled trial

H S Tan et al. Anaesthesia. 2024 Apr.

Abstract

There is conflicting evidence regarding the association between epidural labour analgesia and risk of postpartum depression. Most previous studies were observational trials with limited ability to account for confounders. We aimed to determine if epidural analgesia was associated with a significant change in the incidence of postpartum depression in this randomised controlled trial. We enrolled women aged 21-50 years old with a singleton fetus ≥ 36 weeks gestation. Patients were advised regarding available labour analgesic modalities during enrolment (epidural block; intramuscular pethidine; nitrous oxide; or intravenous remifentanil). On request for analgesia, patients were offered the modality that they had been allocated randomly to first. Blinded investigators recorded patient and obstetric characteristics within 24 h of delivery and assessed for postpartum depression at 6-10 weeks following delivery using the Edinburgh Postnatal Depression Scale (score ≥ 13 considered positive for postpartum depression). The modified intention-to-treat population consisted of all patients who received any form of labour analgesia, while per-protocol consisted of patients who received their randomised modality as their first form of labour analgesia. Of 881 parturients allocated randomly (epidural n = 441, non-epidural n = 440), we analysed 773 (epidural n = 389, non-epidural n = 384); 62 (15.9%) of women allocated to epidural group developed postpartum depression compared with 65 (16.9%) women allocate to the non-epidural group. There were no significant differences in the incidence of postpartum depression between the two groups (adjusted risk difference (95%CI) 1.6 (-3.0-6.3%), p = 0.49). Similar results were obtained with per-protocol analysis (adjusted risk difference (95%CI) -1.0 (-8.3-6.3%), p = 0.79). We found no significant difference in the risk of postpartum depression between patients who received epidural labour analgesia and those who utilised non-epidural analgesic modalities.

Keywords: combined spinal-epidural; labour analgesia; obstetrics; postnatal depression.

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References

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