{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T01:18:25Z","timestamp":1768785505599,"version":"3.49.0"},"reference-count":73,"publisher":"Georg Thieme Verlag KG","issue":"01","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Z Geburtshilfe Neonatol"],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>COVID-19 pregnancies are associated with increased rates of premature delivery\n                    and stillbirths. It is still a matter of debate whether there is a\n                    COVID-19-associated pattern of placenta pathology. We updated our previously\n                    published results on a systematic literature review and meta-analysis of\n                    COVID-19 pregnancies. In total, 38 reports on 3677 placentas were evaluated\n                    regarding histopathological changes. Maternal vascular malperfusion\n                    (32%), fetal vascular malperfusion (19%), acute and chronic\n                    inflammation (20% and 22%) were frequent pathologies. In\n                    non-COVID-19 pregnancies, placentas show similar histologic patterns and mainly\n                    similar frequencies of manifestation. It has to be taken into account that there\n                    might be an observation bias, because some findings are diagnosed as a\n                    \u201cpathology\u201d that might have been classified as minor or\n                    unspecific findings in non-COVID-19 placentas. COVID-19 placentitis occurs in\n                    1\u20132% of cases at the most. In conclusion, this updated\n                    meta-analysis indicates that COVID-19 infection during pregnancy does not result\n                    in an increased rate of a specific placenta pathology and COVID-19 placentitis\n                    is rare.<\/jats:p>","DOI":"10.1055\/a-2220-7469","type":"journal-article","created":{"date-parts":[[2024,2,8]],"date-time":"2024-02-08T23:33:16Z","timestamp":1707435196000},"page":"42-48","source":"Crossref","is-referenced-by-count":6,"title":["An Update on COVID-19-Associated Placental\n                    Pathologies"],"prefix":"10.1055","volume":"228","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0899-1462","authenticated-orcid":false,"given":"Nora","family":"Schaumann","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Pathologie, Medizinische Hochschule Hannover,\n                    Hannover, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jan-Theile","family":"Suhren","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Pathologie, Medizinische Hochschule Hannover,\n                    Hannover, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2024,2,8]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"100049","DOI":"10.1016\/j.xagr.2021.100049","article-title":"Systematic review and meta-analysis of COVID-19 maternal and neonatal clinical\n                    features and pregnancy outcomes up to June 3, 2021","volume":"2","author":"G Marchand","year":"2022","journal-title":"AJOG Glob Rep"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"84","DOI":"10.1016\/j.trsl.2022.08.007","article-title":"COVID-19 and pregnancy: clinical outcomes; mechanisms, and vaccine efficacy","volume":"251","author":"D 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