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Status unknownNCT05217251Updated Mar 23, 2022

EEG Alterations of Uterine Contractions in the First Stage of Labor Predicting Postpartum Depression

An observational study in Postpartum Depression, sponsored by Zhujiang Hospital. Status unknown at 1 site in China. Open to female participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2022-03-23.

Sponsored by Zhujiang Hospital · Observational

The sponsor has not verified this record recently (last verified Jan 2022), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
330
Ages
18 Years to 45 Years
Sex
Female
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Study summary

Severe uterine contractions in labor can trigger emotional disorders including postpartum depression in women during the puerperium. Numerous studies have shown that resting frontal electroencephalogram (EEG) asymmetry is closely related to depression. Therefore, the investigators hypothesize that the frontal alpha asymmetry in EEG during uterine contractions in the first stage of labor be associated with the risk level of postpartum depression. The objective of this research is to investigate, in a 1-year period, the incidence of postpartum depression in natural birth mothers in relation to frontal alpha asymmetry in EEG during uterine contractions and resting state.

Read the detailed description

Severe uterine contractions in labor can trigger emotional disorders including postpartum depression in women during the puerperium. It is characterized by lack of motivation and behavioral changes, potentially producing serious negative consequences for offspring.

In addition, EEG alpha asymmetry is one of the commonly studied biomarkers for depression. There are multiple previous studies regarding the symmetry of EEG in left and right brain hemispheres, especially at frontal electrodes. Besides, there are many other EEG indicators that predict depression which are also likely to be strong contributors to postpartum depression.

The objective of study is to investigate if there is any association between EEG alterations of uterine contractions in the first stage of labor and factors that are associated with postpartum depression.

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Conditions studied

  • Postpartum Depression

Keywords

  • electroencephalogram
  • uterine contractions
  • in the first stage of labor
  • Postpartum Depression
  • frontal alpha asymmetry
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In context

Depression, Postpartum

536 studies on the registry are indexed under Depression, Postpartum; 126 are open to participants now.

This study's planned enrollment of 330 is above the median of 200 across 91 observational studies indexed under Depression, Postpartum.

Browse Depression, Postpartum studies →

Lead sponsor

Zhujiang Hospital is the lead sponsor of 202 studies on the registry; 97 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 45 Years
Sexes eligible
Female
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Participants will consist of parturient women who plan a vaginal delivery in Zhujiang hospital .

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • parturient women with a singleton pregnancy;
  • capable of understanding the research requirements and willing to cooperate with the study instructions;
  • aged 18-45;
  • American Society of Anesthesiologists(ASA) physical status I or II;
  • right handed;
  • not taking any drug known to influence the EEG;
  • EPDS scale (Edinburgh Postnatal Depression Scale, EPDS) is used in the last prenatal examination in outpatient clinics , with scores \< 10;
  • informed consent is gained from all individual subjects taking part in the study.

Exclusion criteria

Exclusion Criteria:

  • history of neurological or psychiatric disease;
  • personality disorder;
  • cerebral disease;
  • epidural anesthesia contraindication;
  • multiparous pregnancy.
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
330 participants (estimated)
Patient registry
No

Groups and cohorts

  • exposed group

    Parturient women will be identified with frontal alpha asymmetry based on EEG monitoring of uterine contractions in the first stage of labor and will then be allocated to vaginal delivery with alpha asymmetry group in hospital.

    Other: frontal alpha asymmetry in EEG

  • control group

    Parturient women will be identified without frontal alpha asymmetry based on EEG monitoring of uterine contractions in the first stage of labor and will then be allocated to vaginal delivery without alpha asymmetry group in hospital.

    Other: frontal alpha asymmetry in EEG

Interventions

  • Otherfrontal alpha asymmetry in EEG

    frontal alpha asymmetry based on EEG monitoring of uterine contractions in the first stage of labor. The power spectra will be log-transformed and averaged across the frontal left (FL) channels (FP1, F3, F7) and frontal right (FR) channels (FP2, F4, F8). A higher power spectrum value indicates lower neural activity. Frontal asymmetry (FA) power scores are calculated as follows, FA = (FR-FL)/(FR+FL). A positive FA value shows greater neural activity in the left frontal lobe than right frontal neural activity (relative left frontal asymmetry), while its negative value shows oppositely.

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What researchers measure

Primary outcomes

  1. The incidence of depression in 12 months after childbirth.

    Postpartum depression in 12 months is diagnosed by using Edinburgh Postpartum Depression Scale (EPDS) by a research assistant. the threshold of postpartum depression is defined as a score of ≥10.The EPDS is a 10-item self-report scale to screen for Postnatal Depression. The EPDS is found to have satisfactory sensitivity and specificity, and is also sensitive to change in the severity of depression over time. Each question is on a scale of 0 to 3. The EPDS has a score range between 0 to 30, with a higher score reflecting higher symptom severity in depression.

    Time frame: up to 12 months after childbirth.

Secondary outcomes

  1. The score of pain in 12 months after childbirth

    The score of pain at in 12 months after childbirth is assessed by using a Visual Analogue Scale (an 10-point scale where 0 indicates no pain and 10 the worst pain).The Visual Analogue Scale is a self-reported scale consisting of a horizontal or vertical line, usually 10 centimeters long (100 mm) anchored at the extremes by two verbal descriptors referring to the pain status . An introductory question asks the patient to express that best refers to her pain.

    Time frame: up to 12 months after childbirth.

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Study locations

1 of 1 sites recruiting
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References and documents

Publications

  • Howard LM, Molyneaux E, Dennis CL, Rochat T, Stein A, Milgrom J. Non-psychotic mental disorders in the perinatal period. Lancet. 2014 Nov 15;384(9956):1775-88. doi: 10.1016/S0140-6736(14)61276-9. Epub 2014 Nov 14. PubMed 25455248 ↗
  • O'Hara MW, McCabe JE. Postpartum depression: current status and future directions. Annu Rev Clin Psychol. 2013;9:379-407. doi: 10.1146/annurev-clinpsy-050212-185612. Epub 2013 Feb 1. PubMed 23394227 ↗
  • Deng CM, Ding T, Li S, Lei B, Xu MJ, Wang L, Xu SC, Yang HX, Sun XY, Li XY, Ma D, Wang DX. Neuraxial labor analgesia is associated with a reduced risk of postpartum depression: A multicenter prospective cohort study with propensity score matching. J Affect Disord. 2021 Feb 15;281:342-350. doi: 10.1016/j.jad.2020.12.027. Epub 2020 Dec 8. PubMed 33348177 ↗
  • Tian T, Li Y, Xie D, Shen Y, Ren J, Wu W, Guan C, Zhang Z, Zhang D, Gao C, Zhang X, Wu J, Deng H, Wang G, Zhang Y, Shao Y, Rong H, Gan Z, Sun Y, Hu B, Pan J, Li Y, Sun S, Song L, Fan X, Li Y, Zhao X, Yang B, Lv L, Chen Y, Wang X, Ning Y, Shi S, Chen Y, Kendler KS, Flint J, Tian H. Clinical features and risk factors for post-partum depression in a large cohort of Chinese women with recurrent major depressive disorder. J Affect Disord. 2012 Feb;136(3):983-7. doi: 10.1016/j.jad.2011.06.047. Epub 2011 Aug 7. PubMed 21824665 ↗
  • Purdon PL, Sampson A, Pavone KJ, Brown EN. Clinical Electroencephalography for Anesthesiologists: Part I: Background and Basic Signatures. Anesthesiology. 2015 Oct;123(4):937-60. doi: 10.1097/ALN.0000000000000841. PubMed 26275092 ↗
  • Koller-Schlaud K, Strohle A, Barwolf E, Behr J, Rentzsch J. EEG Frontal Asymmetry and Theta Power in Unipolar and Bipolar Depression. J Affect Disord. 2020 Nov 1;276:501-510. doi: 10.1016/j.jad.2020.07.011. Epub 2020 Jul 10. PubMed 32871681 ↗
  • de Aguiar Neto FS, Rosa JLG. Depression biomarkers using non-invasive EEG: A review. Neurosci Biobehav Rev. 2019 Oct;105:83-93. doi: 10.1016/j.neubiorev.2019.07.021. Epub 2019 Aug 7. PubMed 31400570 ↗
  • Brakowski J, Spinelli S, Dorig N, Bosch OG, Manoliu A, Holtforth MG, Seifritz E. Resting state brain network function in major depression - Depression symptomatology, antidepressant treatment effects, future research. J Psychiatr Res. 2017 Sep;92:147-159. doi: 10.1016/j.jpsychires.2017.04.007. Epub 2017 Apr 24. PubMed 28458140 ↗
  • Jesulola E, Sharpley CF, Agnew LL. The effects of gender and depression severity on the association between alpha asymmetry and depression across four brain regions. Behav Brain Res. 2017 Mar 15;321:232-239. doi: 10.1016/j.bbr.2016.12.035. Epub 2016 Dec 29. PubMed 28042006 ↗
  • Quraan MA, Protzner AB, Daskalakis ZJ, Giacobbe P, Tang CW, Kennedy SH, Lozano AM, McAndrews MP. EEG power asymmetry and functional connectivity as a marker of treatment effectiveness in DBS surgery for depression. Neuropsychopharmacology. 2014 Apr;39(5):1270-81. doi: 10.1038/npp.2013.330. Epub 2013 Nov 28. PubMed 24285211 ↗
  • Nusslock R, Shackman AJ, Harmon-Jones E, Alloy LB, Coan JA, Abramson LY. Cognitive vulnerability and frontal brain asymmetry: common predictors of first prospective depressive episode. J Abnorm Psychol. 2011 May;120(2):497-503. doi: 10.1037/a0022940. PubMed 21381804 ↗
  • Wang Y, He WY, Zhan CAA, Pan SL, Wu W, Li FX, Zhang HF. Protocol for prognosticating PPD using EEG changes during labor pain by uterine contractions: a prospective cohort study in the first stage of labor. BMC Pregnancy Childbirth. 2025 Jan 22;25(1):49. doi: 10.1186/s12884-025-07167-1. PubMed 39844134 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 23, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05217251
Lead sponsor
Zhujiang Hospital
Responsible party
Sponsor
First posted
Feb 1, 2022
Start date
Mar 1, 2022
Primary completion
Feb 2023 (estimated)
Completion
Dec 2024 (estimated)
Last update
Mar 23, 2022

Study contacts

HongFei Zhang, MD PhD
Contact
hongfeiz2003@163.com
8620 62787271
FengXian Li, MD PhD
Contact
lifengxian81@outlook.com
8620 62787271
HongFei Zhang, MD PhD
principal investigator · Zhujiang Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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