OBJECTIVE To identify the risk factors for placenta previa in an Asian population. METHODS This retrospective cohort study involved Taiwanese women delivered between July 1990 and December 2003 at Chang Gung Memorial Hospital, Taipei, Taiwan. Pregnancies complicated by multiple gestation and fetal anomalies were excluded. RESULTS There were 457 cases of placenta previa (1.2%) among the 37,7...

Ultrasound is a useful adjunct to the physical examination, particularly in obstetrics patients. By ultrasonography we visualize the placenta position in-situ and describe various positioning of placenta in the uterus. The placenta is positioned at different sites in the uterus which can predict methods of parturition. The objective of this study is to investigate the different positions of pla...

Vasa previa is a rare but clinically important obstetrical complication that can be associated with a low-lying placenta or placenta previa. We aim to present one case of vasa previa diagnosed during the placenta examination after the caesarean indicated for triple uterus scar. A 26-year-old female was referred to our hospital at 30 weeks of gestation to provide a scheduled caesarean. Trans-abd...

OBJECTIVE To determine the frequency of placenta Previa in patients coming to a tertiary care unit with previously scarred and non-scarred uterus. METHODS A descriptive cross sectional study was carried on 114 cases who underwent caesarean sections (37 cases out of 645 cases with non scarred uterus and 77 cases from 721 cases with scarred uterus) in the department of obstetrics and gynecology...

Placenta previa is a condition derived to an abnormal implantation of the embryos in the lower uterine segment, a place that predisposes to persistent uterine bleeding because of the development of new vessels and because it is a poorly contractile area of the uterus. Risk factors for placents previa are: maternal age, number of pregnancies, cigarette smoking, multiple pregnancies, previus surg...

OBJECTIVE To examine the diagnostic precision of ultrasound examination for placenta accreta in women with placenta previa and to compare the morbidity associated with accreta to that of previa alone. METHODS This was a retrospective cohort study of all women with previa with/without accreta examined at the University of California, San Francisco (UCSF) between 2002 and 2008. The sensitivity,...

www.aana.com/aanajournalonline.aspx The rate of cesarean delivery in the United States is at an all-time high. With the increased rate of primary and repeated cesarean delivery, a corresponding increase in the occurrence rate of placenta previa and placenta accreta has been observed. The purpose of this case report is to discuss the obstetric disorder of placenta previa with the concurrent occu...

There are few methods to control heavy intra-operative bleeding during cesarean delivery of placenta previa. Transient occlusion of uterine arteries (TOUA) during operation has previously been reported as a quick and safe method to control intra-operative uterine bleeding. We reported 2 cases of cesarean delivery with complete placenta previa in which TOUA was performed to safely reduce intra-o...

Placenta previa is associated with increased maternal and fetal morbidity, caused primarily by hemorrhage, making an accurate diagnosis very important. However, diagnosis and treatment remain difficult, especially in the second trimester. We treated two cases with placenta previa at 18 weeks' gestation. In both patients, the cervical os was still closed when bleeding increased, necessitating em...

Background Cesarean section (CS) is an independent risk factor for placenta accreta. Some researchers think that the timing of primary cesarean delivery is associated with placenta accreta in subsequent pregnancies. The aim of this study was to investigate the risk of placenta accreta following primary CS without labor, also called primary elective CS, in a pregnancy complicated with placenta p...