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Updated: Jun 15, 2026
08:49
External Cephalic Version: Is it an Effective and Safe Procedure?
Published on: June 6, 2020
Probability of breech presentation and its significance
Slobodan R Sekulić1, Aleksandra Mikov, Dorđe S Petrović
1Department of Neurology, University Hospital, Clinical Center of Vojvodina, Novi Sad, Serbia. turija@EUnet.rs
Summary
Investigating fetal presentation reveals that cephalic presentations are not random. A proposed method adjusts for bias by reclassifying some cephalic fetuses as breech before analysis.
Area of Science:
- Obstetrics and Gynecology
- Fetal Development
- Perinatal Medicine
Background:
- Existing data suggest breech presentation is random, leading to a heterogeneous cephalic presentation group.
- This heterogeneity complicates comparisons between breech and cephalic fetuses.
- A need exists to refine methodologies for accurate fetal presentation analysis.
Purpose of the Study:
- To propose a method for eliminating bias in comparisons of breech and cephalic presenting fetuses.
- To identify the underlying physiological processes influencing fetal presentation from the 25th gestational week.
Main Methods:
- Subtracting fetuses with identical characteristics from the cephalic group and adding them to the breech group.
- Correcting comparisons for gestational age and delivery-independent data.
- Analyzing data from the 25th gestational week onwards.
Main Results:
- The proposed method allows for a more accurate comparison of breech and cephalic presentations.
- Identifies a significant physiological process influencing fetal presentation.
- Suggests 92% of cephalic presentations are due to a specific physiological process.
Conclusions:
- Cephalic presentation is not solely due to intrauterine space filling; a physiological process is involved.
- Methodological adjustments are crucial for valid comparisons of fetal presentations.
- Further research into the physiological process from the 25th gestational week is warranted.
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