- Academic Editors
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Background: The optimal management of patients diagnosed in the
mid-gestation with a low-lying placenta (LLP) is controversial. We sought to
determine the rate of adverse pregnancy outcomes with an initial diagnosis of
LLP, and whether this was dependent on a follow up sonographic diagnosis of
resolution or the initial placenta-to-internal os distance (P-IOD).
Methods: A retrospective cross-sectional study of singleton pregnancies
with a sonographically diagnosed LLP between 18–24 weeks’ gestation (12/2010 to
7/2018) was conducted at a tertiary referral center in the U.S. Follow-up
ultrasound examinations from the late second or early third trimester were
reviewed. Maternal morbidity associated with blood loss, regardless of resolution
of LLP was recorded and stratified by P-IOD at
diagnosis. The LLP was considered resolved if the P-IOD was