Transvaginal Ultrasonography in Predicting Placenta Previa at Delivery: A Longitudinal Study

Mustafá, Samir Abdalla; Brizot, Maria de Lourdes; Carvalho, Mário Henrique Burlacchini de; Watanabe, Luiz Carlos; Kahhale, Soubhi; Zugaib, Marcelo

doi:10.1097/01.ogx.0000058693.18516.b4

Cited by 2 publications

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“…A placental edge that exactly reaches the internal os is described by a measurement of 0 mm. For a placental edge reaching or overlapping the internal os, Mustafa et al [21] found in a longitudinal study an incidence of 42% between 11 and 14 weeks, 3.9% between 20 and 24 weeks, and 1.9% at term. With overlap of 23 mm between 11 and 14 weeks, they estimated that the probability of placenta previa at term was 8%.…”

Section: Prediction Of Placenta Previa At Deliverymentioning

confidence: 96%

“…[21][22][23][24][25][26] In this guideline, the following terminology is recommended to describe this relationship: when the placenta edge does not reach the internal os, the distance is reported in millimetres away from the internal os; when the placental edge overlaps the internal os by any amount, the distance is described as millimetres of overlap. A placental edge that exactly reaches the internal os is described by a measurement of 0 mm.…”

Section: Prediction Of Placenta Previa At Deliverymentioning

confidence: 99%

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Diagnosis and management of placenta previa

2008

Intl J Gynecology & Obste

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Objective: To review the use of transvaginal ultrasound for the diagnosis of placenta previa and recommend management based on accurate placental localization. Options: Transvaginal sonography (TVS) versus transabdominal sonography for the diagnosis of placenta previa; route of delivery, based on placenta edge to internal cervical os distance; in-patient versus out-patient antenatal care; cerclage to prevent bleeding; regional versus general anesthesia; prenatal diagnosis of placenta accreta. Outcome: Proven clinical benefit in the use of TVS for diagnosing and planning management of placenta previa. Evidence: MEDLINE search for "placenta previa" and bibliographic review.

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Section: Prediction Of Placenta Previa At Deliverymentioning

confidence: 96%

Section: Prediction Of Placenta Previa At Deliverymentioning

confidence: 99%

Diagnosis and management of placenta previa

2008

Intl J Gynecology & Obste

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“…Over 90% of those diagnosed with placenta previa by a routine transvaginal ultrasound scan (TVUS) prior to 14 weeks of gestation become normally situated at term [10]. The incidence of placenta praevia between 18-23 weeks is reported to be about 2% and 80% of these placentae are likely to be in the upper segment at term [11].…”

Section: Management Of Placenta Praeviamentioning

confidence: 97%

Management of Massive Obstetric Haemorrhage

Krishna¹,

Chandraharan²

2011

CWHR

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Obstetric haemorrhage refers to any bleeding that occurs during pregnancy, delivery or in the postpartum period. It is associated with maternal morbidity and remains the leading cause of direct maternal deaths in developing countries. Antepartum haemorrhage (APH) refers to any genital tract bleeding prior to the delivery of the baby. Identifiable causes of APH include placenta praevia, placental abruption, vasa praevia and local organic pathology such as genital tract tumours. The exact cause of APH remains uncertain in approximately 50% of patients. Postpartum haemorrhage (PPH) refers to excessive bleeding from the genital tract after the delivery of the baby and is termed primary when it occurs within the first 24 hours of birth. Common causes include atonic uterus, genital tract trauma, retained placental tissue and coagulopathy. Secondary PPH occurs after the first 24 hours and is due to retained products of conception and/or infection (endometritis). The management algorithm 'HAEMOSTASIS' has been proposed to aid the systematic management of postpartum haemorrhage.A multidisciplinary approach is essential to improve outcomes. Early diagnosis, timely institution of appropriate measures to arrest haemorrhage, replacement of blood volume (intravenous fluids), ensuring oxygen carrying capacity of blood (by blood transfusion) and correction of coagulopathy may help save lives.

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Transvaginal Ultrasonography in Predicting Placenta Previa at Delivery: A Longitudinal Study

Cited by 2 publications

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Diagnosis and management of placenta previa

Diagnosis and management of placenta previa

Management of Massive Obstetric Haemorrhage

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