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Not yet recruitingNCT07826247Updated Sep 17, 2026

Hematological and Coagulation Markers in Predicting Placenta Accreta Spectrum in Placenta Previa

An observational study in Placenta Accreta Spectrum and Placenta Previa, sponsored by Assiut University. Not yet recruiting. Open to female participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by Assiut University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
130
Ages
18 Years to 40 Years
Sex
Female
01

Study summary

Placenta accreta spectrum (PAS) is a serious pregnancy complication where the placenta attaches too deeply into the wall of the uterus. This condition can lead to severe complications during delivery, including heavy bleeding, the need for blood transfusions, intensive care unit (ICU) admission, or the surgical removal of the uterus (hysterectomy).

Currently, doctors primarily use ultrasound to detect PAS before birth, but the accuracy of ultrasound can vary depending on the equipment and the doctor's experience. The main goal of this study is to determine if routine, simple blood tests can serve as an additional tool to help doctors predict which mothers are at the highest risk of developing PAS.

The study will involve pregnant women who have placenta previa (a low-lying placenta) and a history of a previous cesarean delivery. Researchers will collect a standard blood sample when the mother is admitted to the hospital to look at specific markers, including a complete blood count (CBC) and blood clotting (coagulation) factors.

By comparing these admission blood test results with the actual diagnosis of PAS confirmed during delivery, researchers hope to identify a reliable way to predict this condition. Improving the early detection of PAS could help medical teams better prepare for high-risk deliveries, optimize surgical planning, and ultimately improve health outcomes for mothers.

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Conditions studied

  • Placenta Accreta Spectrum
  • Placenta Previa

Keywords

  • Hematological markers
  • Coagulation markers
  • Complete blood count (CBC)
  • Neutrophil-to-Lymphocyte Ratio (NLR)
  • Platelet-to-Lymphocyte Ratio (PLR)
  • D-dimer
  • Previous cesarean delivery
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In context

Placenta Accreta

150 studies on the registry are indexed under Placenta Accreta; 40 are open to participants now.

This study's planned enrollment of 130 is above the median of 87 across 78 observational studies indexed under Placenta Accreta.

Browse Placenta Accreta studies →

Lead sponsor

Assiut University is the lead sponsor of 5,078 studies on the registry; 2,178 are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

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Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
Female
Sampling method
Non-probability sample

Study population

The study population consists of pregnant women aged 18 to 40 years presenting to the Women's Health Hospital at Assiut University. Eligible participants must have a singleton pregnancy at a gestational age greater than 28 weeks, a diagnosis of placenta previa confirmed by ultrasound, a history of previous cesarean delivery, and be hemodynamically stable upon admission. Patients will be excluded if they present with intrauterine fetal demise (IUFD), intrauterine growth restriction (IUGR), premature rupture of membranes (PROM), chorioamnionitis, known blood diseases or bleeding tendencies, hypertension, or diabetes mellitus.

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

  • Age: 18-40 years
  • Placenta previa diagnosed by ultrasound
  • Singleton pregnancy
  • Gestational age >28 weeks
  • Previous cesarean delivery
  • Hemodynamically stable on admission

Exclusion criteria

Exclusion Criteria:

  • Intrauterine fetal demise (IUFD)
  • Intrauterine growth restriction (IUGR)
  • Premature rupture of membranes (PROM)
  • Chorioamnionitis
  • Patients with known blood disease or bleeding tendency
  • Hypertension (HTN)
  • Diabetes mellitus (DM)
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Study design

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

Groups and cohorts

  • Patients with Placenta Previa and Previous Cesarean Delivery

    This cohort consists of pregnant women aged 18 to 40 years with a singleton pregnancy at \>28 weeks gestational age. Participants must be diagnosed with placenta previa via ultrasound, have a history of previous cesarean delivery, and be hemodynamically stable on admission. Participants will undergo an antenatal ultrasound to assess for signs of placenta accreta spectrum (PAS). Venous blood samples will be collected upon admission to evaluate complete blood count (CBC) parameters (including calculation of inflammatory indices like NLR, PLR, SII, and SIRI) and a coagulation profile (PT, PC, INR, aPTT, and D-dimer).

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What researchers measure

Primary outcomes

  1. Diagnostic Accuracy of the Systemic Immune-Inflammation Index (SII) for Predicting Placenta Accreta Spectrum

    Evaluation of the predictive value of the maternal Systemic Immune-Inflammation Index (SII) for diagnosing placenta accreta spectrum (PAS). The SII is calculated from the complete blood count (neutrophils × platelets / lymphocytes) collected on hospital admission. Diagnostic accuracy will be quantified using the Area Under the Receiver Operating Characteristic (ROC) curve to determine the optimal cut-off point, sensitivity, and specificity. The reference standard diagnosis of PAS is confirmed via intraoperative assessment at the time of delivery.

    Time frame: Within 12 weeks of enrollment

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Study locations

No study locations are listed for this record.

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Oct 2026; primary completion for Oct 2027, 12 months later.

Of 34 observational studies under Placenta Accreta, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 35. This study's planned 12 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 13, 2026
First posted
Sep 17, 2026
StartEst.
Oct 2026
Primary completionEst.
Oct 2027
CompletionEst.
Nov 2027
Last update
Sep 17, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 17, 2026, 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
NCT07826247
Lead sponsor
Assiut University
Responsible party
Mariam Khalifa Abdelnour Dous (Resident of Obstetrics and Gynecology, Assiut University) — Principal investigator
First posted
Sep 17, 2026
Start date
Oct 2026 (estimated)
Primary completion
Oct 2027 (estimated)
Completion
Nov 2027 (estimated)
Last update
Sep 17, 2026
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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