Corpus luteum across the first trimester: size and laterality as observed by ultrasound
| Autor: | Stephen Tong, Simon Meagher, Mark Teoh, Shawn Choong, Katrina Rowan, Beverley Vollenhoven |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Ovulation
medicine.medical_specialty Victoria media_common.quotation_subject Gestational Age Functional Laterality Ultrasonography Prenatal Corpus Luteum Pregnancy medicine Humans Prospective Studies Ultrasonography Doppler Color Prospective cohort study media_common Retrospective Studies Gynecology Obstetrics business.industry Ultrasound Obstetrics and Gynecology Gestational age Retrospective cohort study medicine.disease Pregnancy Trimester First medicine.anatomical_structure Reproductive Medicine Gestation Female business Corpus luteum |
| Zdroj: | Fertility and sterility. 90(5) |
| ISSN: | 1556-5653 |
| Popis: | Objective To study the site and size of the corpus luteum (CL) across the first trimester of pregnancy. Design Retrospective observational study of 1,806 ultrasound scans performed at 5 to 9 (+6 d) weeks' gestation, as well as a prospective study (n = 313) performed at 10 to 13 (+6 d) weeks' gestation. Setting Four ultrasound practices across Victoria, Australia. Patient(s) Two thousand one hundred nineteen pregnant women. Intervention(s) Transvaginal ultrasound. Main Outcome Measure(s) Side and size (diameter) of the CL. Result(s) At 5 to 9 weeks' gestation, the mean CL diameter was 19.3 mm, with no statistically significant variation across each gestational week. Corpus luteum size then statistically significantly declined at 10 to 13 weeks' gestation, with a mean diameter of 16.85 mm. Of 237 women in whom both ovaries were visualized at 10 to 13 weeks' gestation, a CL was seen in 82% of cases. A statistically significant right-sided bias was observed in both groups (54% at 5–9 wk gestation, 56% at 10–13 wk). Conclusion(s) The CL remains static in size across 5 to 9 weeks' gestation, then its size declines or it disappears from 10 to 13 weeks. A novel right-sided ovulation bias occurs in human beings. |
| Databáze: | OpenAIRE |
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