Corpus overview


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MeSH Disease

Human Phenotype

Transmission

There are no transmission terms in the subcorpus


Seroprevalence
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    Placental pathology in COVID-19

    Authors: Elisheva D Shanes; Leena B Mithal; Sebastian Otero; Hooman A Azad; Emily S Miller; Jeffery A Goldstein

    doi:10.1101/2020.05.08.20093229 Date: 2020-05-12 Source: medRxiv

    Objectives: To describe histopathologic findings in the placentas of women with COVID-19 during pregnancy. Methods: Pregnant women with COVID-19 delivering between March 18, 2020 and May 5, 2020 were identified. Placentas were examined and compared to historical controls and women with placental evaluation for a history of melanoma HP melanoma MESHD. Results: 16 placentas from patients with SARS-CoV-2 were examined (15 with live birth in the 3rd trimester 1 delivered in the 2nd trimester after intrauterine fetal demise). Compared to controls, third trimester placentas were significantly more likely to show at least one feature of maternal vascular malperfusion (MVM), including abnormal or injured maternal vessels, as well as delayed villous maturation, chorangiosis, and intervillous thrombi MESHD. Rates of acute and chronic inflammation MESHD were not increased. The placenta from the patient with intrauterine fetal demise showed villous edema MESHD edema HP and a retroplacental hematoma MESHD. Conclusions: Relative to controls, COVID-19 placentas show increased prevalence SERO of features of maternal vascular malperfusion (MVM), a pattern of placental injury reflecting abnormalities in oxygenation within the intervillous space associated with adverse perinatal outcomes. Only 1 COVID-19 patient was hypertensive MESHD despite the association of MVM with hypertensive disorders MESHD and preeclampsia HP. These changes may reflect a systemic inflammatory or hypercoagulable state influencing placental physiology.

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MeSH Disease
Human Phenotype
Transmission
Seroprevalence


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