The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Third‐trimester transvaginal ultrasonography in placenta previa: does the shape of the lower placental edge predict clinical outcome?
Open accessAbstract
Objective: To evaluate the clinical significance of the shape of the lower placental edge in women with transvaginal sonographic diagnosis of placenta previa. Design: A prospective observational study at a tertiary teaching hospital. Population: A total of 104 women with confirmed transvaginal sonographic diagnosis of placenta previa before 32 weeks' gestation. Methods: Initial transvaginal sonography was performed at between 28 and 32 weeks' gestation in 138 patients with either strong clinical suspicion or previous abdominal sonographic diagnosis of placenta previa in the early third trimester. The lower placental edge was found to be positioned over the internal cervical os in 33 women (complete previa) and within 3 cm from it in 71 women (low‐lying placenta). Patients with low‐lying placenta were followed up by serial transvaginal sonographic examinations until delivery; detailed information including the placental location (anterior or posterior), the distance of its edge from the internal cervical os and its thickness were recorded. The clinical outcomes of the 17 who had a thick‐edge low‐lying placenta were compared with those who had a thin‐edge one (54 women). In patients with complete placenta previa, demographic data, the shape of the lower placental edge whenever transvaginal sonography visualized it, and the clinical outcomes were documented. The incidence of major complications in thick‐edge or central placenta was compared to that in the thin‐edge group. Results: Women having a low‐lying placenta with a thick edge had a significantly higher rate of antepartum hemorrhage (P = 0.0002), abdominal delivery (P = 0.02), abnormally adherent placenta (P = 0.012) and low birth weight (P = 0.006) than those in whom the placental edge was thin. Cesarean hysterectomy was required in six patients with complete placenta previa because of severe peripartum hemorrhage; all of them had either central or thick‐edge placenta accreta. Conclusion: Women with placenta previa are at a relatively higher risk of developing complications if the lower placental edge is thick. Integration of the shape of the lower placental edge into transvaginal sonographic assessment of placenta previa may improve the prediction of mode of delivery and clinical outcome. Copyright © 2001 International Society of Ultrasound in Obstetrics and Gynecology
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“These additional ultrasound features are poorly defined, not routinely assessed in UK practice”
From Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green‐top Guideline No. 27a (2019) · cites this paper as [76]
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“Women presenting with a placental edge less than 20 mm from the internal os in the third trimester are more likely to need delivery by caesarean section when the placental edge is thicker (over 10 mm) 75,76 and/or contains a sponge-like echo 77 or marginal 'sinus'.78”
From Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green‐top Guideline No. 27a (2019) · cites this paper as [76]
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Citations
Cites
Maternal-Fetal Medicine: Principles and Practice
Welch, R. A. (1985) · Archives of Pediatrics and Adolescent Medicine · doi:10.1001/archpedi.1985.02140060022017 · Cited by 928
Accuracy and Safety of Transvaginal Sonographic Placental Localization
LEERENTVELD, R. A., GILBERTS, E. C. A. M., ARNOLD, M. J. C. W. J., & WLADIMIROFF, J. W. (1990) · Obstetrics & Gynecology · doi:10.1097/00006250-199011000-00006 · Cited by 179
Characterization of placenta accreta using transvaginal sonography and color Doppler imaging
Lerner, J. P., Deane, S., & Timor‐Tritsch, I. E. (1995) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.1995.05030198.x · Cited by 153
Confirming the safety of transvaginal sonography in patients suspected of placenta previa.
Timor‐Tritsch, I. E., & Yunis, R. A. (1993) · PubMed · Cited by 136
Oppenheimer, L. W., Farine, D., Ritchie, J. W. K., Lewinsky, R. M., Telford, J., & Fairbanks, L. A. (1991) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(91)90465-4 · Cited by 105
Vaginal ultrasound for diagnosis of placenta previa
Farine, D., Fox, H. E., Jakobson, S., & Timor‐Tritsch, I. E. (1988) · American Journal of Obstetrics and Gynecology · doi:10.1016/s0002-9378(88)80009-7 · Cited by 88
The technique of transvaginal sonography with the use of a 6.5 MHz probe
Timor‐Tritsch, I. E., Bar-Yam, Y., Elgali, S., & Rottem, S. (1988) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(88)90210-4 · Cited by 87
Placenta previa and Antepartum Hemorrhage after Previous Cesarean Section
Nielsen, T. F., Hagberg, H., & Ljungblad, U. W. (2010) · Gynecologic and Obstetric Investigation · doi:10.1159/000293625 · Cited by 83
The epidemiology and clinical history of asymptomatic midtrimester placenta previa
Newton, E. R., Barss, V. A., & Cetrulo, C. L. (1984) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(84)90559-3 · Cited by 66
Pregnancies complicated by placenta praevia: what is appropriate management?
Love, C. D. B., & Wallace, E. M. (1996) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1996.tb09903.x · Cited by 66
Placenta previa and abruptio placentae.
Lm, H., & Ja, P. (1971) · Cited by 53
Technical factors responsible for "placental migration": sonographic assessment.
Townsend, R. R., Laing, F. C., Nyberg, D. A., Jeffrey, R. B., & Wing, V. W. (1986) · Radiology · doi:10.1148/radiology.160.1.3520642 · Cited by 47
Diagnosis of Placenta Previa by Transvaginal Sonography
Timor‐Tritsch, I. E., & Monteagudo, A. (1993) · Annals of Medicine · doi:10.3109/07853899309147875 · Cited by 44
Do Women With Placenta Praevia Without Antepartum Haemorrhage Require Hospitalization?
Rosen, D. M. B., & Peek, M. J. (1994) · Australian and New Zealand Journal of Obstetrics and Gynaecology · doi:10.1111/j.1479-828x.1994.tb02674.x · Cited by 29
Transperineal sonography in second trimester to term pregnancy and early labor.
Zilianti, M., Azuaga, A., Calderon, F., & Redondo, C. N. (1991) · Journal of Ultrasound in Medicine · doi:10.7863/jum.1991.10.9.481 · Cited by 28
Abdomino-pelvic packing to control severe haemorrhage following caesarean hysterectomy
Ghourab, S. (1999) · Journal of Obstetrics and Gynaecology · doi:10.1080/01443619965480 · Cited by 25
Self-citationThe mid-trimester placenta previa: a prospective follow-up
Ancona, S., Chatterjee, M. S., Rhee, I., & Sicurenza, B. (1990) · European Journal of Radiology · doi:10.1016/0720-048x(90)90142-x · Cited by 15
Vaginal ultrasound for ruling out placenta praevia. Case report
Farine, D., Fox, H. E., & Timor‐Tritsch, I. E. (1989) · BJOG An International Journal of Obstetrics & Gynaecology · doi:10.1111/j.1471-0528.1989.tb01588.x · Cited by 12
341 What is a low lying placenta?
(1991) · American Journal of Obstetrics and Gynecology · doi:10.1016/0002-9378(91)91080-g · Cited by 6
Research works printed but not linked: 3
- [12]12. Makie WC. Placenta previa. Clin Perinatol 1992; 19: 425 -35
- [15]15. Ancona S, Chatterjee M, Rhee I, Sicurenza B. The midtrimester placenta previa: prospective follow up. Eur J Radiol 1990; 10: 215 - 6
- [17]17. Nielson T, Hagberg H, Ljungblad U. Placenta previa and antepartum haemorrhage after previous caesarean section. Gynecol Obstet Invest 1989; 27: 88 -90
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Placenta Praevia and Placenta Accreta: Diagnosis and Management: Green‐top Guideline No. 27a
Jauniaux, E., Alfirevic, Z., Bhide, A., Belfort, M., Burton, G., Collins, S., Dornan, S., Jurkovic, D., Kayem, G., Kingdom, J., et al. (2019) · BJOG: An International Journal of Obstetrics & Gynaecology · doi:10.1111/1471-0528.15306 · Cited by 506
Romundstad, L. B. (2006) · Human Reproduction · doi:10.1093/humrep/del153 · Cited by 288
Epidemiology of placenta previa accreta: a systematic review and meta-analysis
Jauniaux, E. R. M., Grønbeck, L., Bunce, C., Langhoff‐Roos, J., & Collins, S. (2019) · BMJ Open · doi:10.1136/bmjopen-2019-031193 · Cited by 206
Using ultrasound in the clinical management of placental implantation abnormalities
Vintzileos, A. M., Ananth, C. V., & Smulian, J. C. (2015) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2015.05.059 · Cited by 145
Ultrasound in placental disorders
D’Antonio, F., & Bhide, A. (2014) · Best Practice & Research Clinical Obstetrics & Gynaecology · doi:10.1016/j.bpobgyn.2014.01.001 · Cited by 107
Metadata
- Authors
- Ghourab, S.
- Affiliations
- King Saud University (SA)
- Corresponding author
- Ghourab, S.
- ORCID
- Ghourab, S.
- Venue
- Ultrasound in Obstetrics & Gynecology
- Publisher
- Wiley
- Published
- 2001-08
- Volume
- 18
- Issue
- 2
- Pages
- 103-108
- ISSN
- 0960-7692 (ISSN-L)
- 1469-0705
- OpenAlex
- W1974068772
- Cited by
- 159
- References
- 19
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 7 · 2023: 5 · 2022: 6 · 2021: 6 · 2020: 4 · 2019: 7 · 2018: 11 · 2017: 61 · 2016: 2 · 2015: 4 · 2014: 4 · 2013: 4 · 2012: 3
- FWCI
- 2.00
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Ultrasound in Obstetrics and Gynecology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Maternal and fetal healthcare
- Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
- Health Sciences › Medicine › Hematology › Blood transfusion and management
- Keywords
- placenta previa, transvaginal ultrasound, low-lying placenta, complete placenta previa, antepartum hemorrhage, mode of delivery, placenta accreta, cesarean hysterectomy, low birth weight, placental location
- MeSH terms
- Adult, Female, Humans, Placenta Previa, Predictive Value of Tests, Pregnancy, Pregnancy Trimester, Third, Prospective Studies, Ultrasonography, Prenatal, Endosonography
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