How often is the placenta included in human pregnancy research? A rapid systematic review of the literature

Gates Open Research

article

Leigh A. Taylor¹  Kelly Gallagher¹  Katherine A. Ott²  Alison D. Gernand¹ 

[1] Department of Nutritional Sciences, The Pennsylvania State University, University Park;Department of Biobehavioral Health, The Pennsylvania State University, University Park

关键词: pregnancy;    placenta;    rapid review;    pathology;    ultrasound;   

DOI  :  10.12688/gatesopenres.13215.1

学科分类：电子与电气工程

来源: American Journal Of Pharmtech Research

【 摘 要 】

Background: The placenta is a complex organ that plays a vital role not only in nutrient transfer but also in directing maternal and fetal physiological processes across pregnancy. Due to its multi-functionality, assessing the placenta can provide critical information about maternal and child health and risks of adverse outcomes. Objective: We aimed to quantify the percentage of human pregnancy studies that include placenta data. Methods: We conducted a rapid review of pregnancy studies conducted in the US that were published as original research in PubMed in 2018. Human studies conducted during the second trimester, third trimester, or labor and/or delivery were eligible. The systematic search produced 1,448 publications. After screening and full article review, 290 studies met all eligibility criteria. We then extracted data on study design, reporting of placenta data, time and type of data collection, and study objective categorization. Results: In total, 32% of studies were randomized controlled trials; the remaining were observational studies. Only 14% included placenta data of any kind. A total of 10% included placenta data during pregnancy and 7% included data after delivery; only 2% included both. Most data during pregnancy were collected by ultrasound and most data on the delivered placenta were from pathology exams. Study objectives were focused on maternal and/or infant outcomes (99.7%), while only one study had a placenta outcome. Conclusion: Based on this rapid review, a small proportion of pregnancy studies use placenta data in research. The placenta, an essential component of understanding healthy or adverse outcomes, deserves much more attention in pregnancy research.

【 授权许可】

CC BY