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CompletedNCT06442735IPUSUpdated Jun 4, 2024

Clinical Application of Intrapartum Ultrasound

An interventional study of intrapartum ultrasound and vaginal examination in Abnormal Labor and Complication of Delivery, sponsored by Third Affiliated Hospital, Sun Yat-Sen University. Completed at 1 site in China. Open to female participants aged 18 Years to 45 Years. Per ClinicalTrials.gov, last updated 2024-06-04.

Sponsored by Third Affiliated Hospital, Sun Yat-Sen University · Not applicable, Interventional, and Health services research

From the registry’s dates

  • Registered 2 years 4 months after the study started (first participant enrolled Jan 2022, registered May 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
455
Allocation
Randomized
Ages
18 Years to 45 Years
Sex
Female
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Study summary

Intrapartum ultrasound monitoring is to be compared with conventional labor monitoring to clarify the accuracy of this technology, and then provide a basis for later related research.

Read the detailed description

Intrapartum ultrasound monitoring is to be compared with conventional labor monitoring to clarify the accuracy of this technology, and then provide a basis for later related research. All pregnant women intending to have a vaginal delivery were enrolled in the study. After admission, women were randomly assigned to either intrapartum ultrasound (IPUS) or vaginal examination (VE). In IPUS group, the patient was evaluated by ultrasound, including fetal orientation, pelvic and cervical conditions. IPUS and VE were performed every 2 to 4 hours during the first stage of labor and at least hourly during the second stage. The progress of labor, the occurrence of complications and the prediction of the success rate of vaginal delivery were observed. Finally, the investigators compared whether there were any differences in labor and vaginal delivery complications between the two groups.

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Conditions studied

  • Abnormal Labor
  • Complication of Delivery

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03

In context

Dystocia

55 studies on the registry are indexed under Dystocia; 12 are open to participants now.

This study's enrollment of 455 is above the median of 200 across 42 interventional studies indexed under Dystocia.

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Lead sponsor

Third Affiliated Hospital, Sun Yat-Sen University is the lead sponsor of 133 studies on the registry; 35 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

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

  • All pregnant women in the delivery room for vaginal trial labor

Exclusion criteria

Exclusion Criteria:

  • Those who reject ultrasound
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Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
455 participants (actual)

Study arms

  • Experimental
    Intrapartum ultrasound

    IPUS group women were performed pelvic examination at admission and every 2 to 4 hours during the first stage of labor and at least hourly during the second stage by intrapartum ultrasound.

    Other: intrapartum ultrasound

  • Active comparator
    Vaginal examination

    VE group women were performed pelvic examination at admission and every 2 to 4 hours during the first stage of labor and at least hourly during the second stage by vaginal examination.

    Other: vaginal examination

Interventions

  • Otherintrapartum ultrasound

    In IPUS group, the patient's labor was observed by intrapartum ultrasound.

  • Othervaginal examination

    In VE group, the patient's labor was observed by vaginal examination.

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What researchers measure

Primary outcomes

  1. Duration of the first stage of labor

    Medical record about the length of first stage of labor

    Time frame: Day 1

  2. Duration of the second stage of labor

    Medical record about the length of second stage of labor

    Time frame: Day 1

  3. Number of Participants with fever

    physiological parameter about the body temperature when the patient has fever

    Time frame: Day 3

  4. Number of Participants with the soft birth canal laceration I, II,III, IV

    clinical assessment about the soft birth canal laceration after labor, including I(Perineal skin and vaginal entrance mucosa laceration, little bleeding), II(The lacerated injury has reached the fascia and muscle layer of the perineum, involved the mucous membrane of the posterior wall of the vagina, extended to the groove on both sides of the posterior wall of the vagina and tore upward, the anatomical structure is not easy to identify, and there is more bleeding),III(The lacerated wound extends deep into the perineum, the external anal sphincter is broken, and the rectal mucosa is intact), IV(The anus, rectum and vagina are completely penetrated, the rectointestinal cavity is exposed, the histological tissue is seriously damaged)

    Time frame: Day 1

  5. Number of Participants with postpartum hemorrhage

    total postpartum blood loss in 24 hours measured by weighing method

    Time frame: Day 1

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Study locations

1 site
  • Third Affiliated Hospital of Sun Yat-Sen University
    Guangzhou, Guangdong 510630, China
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References and documents

Individual participant data

Plan to share: No — All data generated or analyzed during this study are available from the Central Contact Person on reasonable request.

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 4, 2024, 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
NCT06442735
Responsible party
Ping Li (Clinical Professor, Third Affiliated Hospital, Sun Yat-Sen University) — Principal investigator
First posted
Jun 4, 2024
Start date
Jan 1, 2022
Primary completion
Dec 31, 2023
Completion
Dec 31, 2023
Last update
Jun 4, 2024

Oversight

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

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This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.

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