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Characteristics, Complications and Perinatal Outcomes in Placenta Previa Women

7. juni 2021 opdateret af: Maternal and Child Health Hospital of Foshan

Characteristics, Complications and Perinatal Outcomes in Placenta Previa Women: a Prospective, Matched Case-control Study

This study aim to investigate the characteristics, complications and perinatal outcomes in pregnant women with placenta previa.

Studieoversigt

Status

Rekruttering

Betingelser

Detaljeret beskrivelse

Placenta previa (PP) is defined as the placenta overlying the endocervical os and grades according to the relationship and the distance between the lower placental edge and the internal os of the uterine cervix: low-lying previa, marginal previa, partial previa, and complete previa.

Cesarean delivery and assisted reproductive technology are associated with an increased risk of placenta previa in subsequent pregnancies. Other risk factors for previa include previous spontaneous, elective pregnancy terminations, previous uterine surgery, increasing maternal age and maternal parity, multiple gestations, smoking, cocaine use, and prior previa.

It is associated with numerous adverse maternal and fetal-neonatal complications, such as perinatal hemorrhage, preterm birth, blood transfusion, hysterectomy, maternal intensive care unit admission, disseminated intravascular coagulation, septicemia, thrombophlebitis, and even fetal-neonatal and maternal death.

This is a 1:2 prospective, matched and hospital-based case-control study to investigate the characteristics, complications and perinatal outcomes in pregnant women with placenta previa. For each placenta previa women, the investigators selected two none-placenta previa pregnant women as control from the same department matched on the mode of delivery, using simple random selection when excess matches are available. The date of their admission is limited to two days.

This hospital is a tertiary university-affiliated medical center with a stable number of approximately 12,000 deliveries per year. Placenta previa is diagnosed by experienced ultrasonologists based on a transabdominal ultrasonic finding of placental tissue covering the internal cervical os before delivery, and further confirmed by obstetricians at delivery.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

1500

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

  • Kina
    • Guangdong
      • Foshan, Guangdong, Kina, 528000
        • Rekruttering
        • Maternal and Child Health Hospital of Foshan
        • Kontakt:
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

12 år til 60 år (Barn, Voksen)

Tager imod sunde frivillige

N/A

Køn, der er berettiget til at studere

Kvinde

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Pregnant women is diagnosed with placenta previa after delivery and their matched pregnant women.

Beskrivelse

Inclusion Criteria:

  • Single Pregnancy
  • Informed consent
  • Fetal gestational age 28 to < 42 weeks

Exclusion Criteria:

  • Multiple pregnancy
  • Refuses to consent

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Placenta Previa
Pregnant women is diagnosed with placenta previa after delivery. Placenta previa is diagnosed by experienced ultrasonologists based on a transabdominal ultrasonic finding of placental tissue covering the internal cervical os before delivery, and further confirmed by obstetricians at delivery.
None-Placenta Previa
Pregnant women is diagnosed without placenta previa after delivery. Placenta previa is diagnosed by experienced ultrasonologists based on a transabdominal ultrasonic finding of placental tissue covering the internal cervical os before delivery, and further confirmed by obstetricians at delivery.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of Participants with postpartum hemorrhage
Tidsramme: 24 hours after delivery
Blood loss > 1000ml during cesarean section or > 500 ml during vaginal delivery
24 hours after delivery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of Participants with antepartum hemorrhage
Tidsramme: From the time of viability of pregnancy to the delivery of the baby, assessed up to 42 weeks
At least one episode of bleeding from the genital tract during the antenatal period
From the time of viability of pregnancy to the delivery of the baby, assessed up to 42 weeks
Number of Participants with preterm birth
Tidsramme: From the time of viability of pregnancy to the delivery of the baby, assessed up to 37 weeks
Before 37 completed gestational weeks
From the time of viability of pregnancy to the delivery of the baby, assessed up to 37 weeks
Number of Participants with very preterm birth
Tidsramme: From the time of viability of pregnancy to the delivery of the baby, assessed up to 32 weeks
Before 32 completed gestational weeks
From the time of viability of pregnancy to the delivery of the baby, assessed up to 32 weeks
Number of participant needed for blood transfusion
Tidsramme: 72 hours after delivery
Calculation of the number of participant needed for blood transfusion
72 hours after delivery
Number of urological injury
Tidsramme: 72 hours after delivery
Calculation of the number of participant with bladder or ureteric injury
72 hours after delivery
Number of needed for extra surgical maneuvers
Tidsramme: 72 hours after delivery
internal iliac ligation or hysterectomy
72 hours after delivery
Number of need for caesarean hysterectomy
Tidsramme: 72 hours after delivery
Yes or no
72 hours after delivery
Number of needed for neonatal ICU
Tidsramme: 72 hours after delivery
Yes or no
72 hours after delivery
Number of needed for maternal ICU
Tidsramme: 72 hours after delivery
Yes or no
72 hours after delivery

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Maternal and Child Health Hospital of Foshan

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. januar 2019

Primær færdiggørelse (Forventet)

31. december 2021

Studieafslutning (Forventet)

30. juni 2022

Datoer for studieregistrering

Først indsendt

5. december 2018

Først indsendt, der opfyldte QC-kriterier

11. december 2018

Først opslået (Faktiske)

13. december 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

9. juni 2021

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

7. juni 2021

Sidst verificeret

1. juni 2021

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • MCHHFoshan-1901

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-delingstidsramme

Six months after completion of the study

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Kliniske forsøg med Placenta Previa

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Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

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Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner