Topic
Retained placenta
About: Retained placenta is a research topic. Over the lifetime, 970 publications have been published within this topic receiving 24045 citations. The topic is also known as: Placenta, Retained.
Papers published on a yearly basis
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Papers
Book•
1 Jan 1967
TL;DR: Early development of the human placenta and histopathologic approach to villous alterations are studied.
Abstract: Preface.- Examination of the placenta.- Macroscopic features of the delivered placenta.- Microscopic survey.- Placental types.- Early development of the human placenta.- Basic structure of the villous trees.- Architecture of normal villous trees.- Characterization of the developmental stages.- Nonvillous parts and trophoblast invasion.- Involution of implantation site - retained placenta.- Anatomy and pathology of the placental membranes.- Anatomy and pathology of the umbilical cord and major fetal vessels.- Placental shape aberrations.- Histopathologic approach to villous alterations.- Classification of villous maldevelopment.- Erythroblastosis fetalis and hydrops fetalis.- Transplacental hemorrhage, cell transfer, trauma.- Fetal storage disorders.- Maternal diseases complicating pregnancy - diabetes - tumors - pre-eclampsia - lupus anticoagulant.- Infectious diseases.- Abortion, Placentas of trisomies, and immunological considerations of recurrent reproductive failure.- Molar pregnancies.- Trophoblastic neoplams.- Benign tumors, chorangiosis.- Multiple pregnancies.- Legal considerations.- Glossary.- Normative values and tables.- Index.
2,158 citations
TL;DR: Research has indicated that beta-carotene supplementation may enhance immunity and reduce the incidence of retained placenta and metritis in dairy cows and marginal copper deficiency resulted in reduced neutrophil killing and decreased interferon production by mononuclear cells.
Abstract: A number of antioxidants and trace minerals have important roles in immune function and may affect health in transition dairy cows. Vitamin E and β-carotene are important cellular antioxidants. Selenium (Se) is involved in the antioxidant system via its role in the enzyme glutathione peroxidase. Inadequate dietary vitamin E or Se decreases neutrophil function during the perpariturient period. Supplementation of vitamin E and/or Se has reduced the incidence of mastitis and retained placenta, and reduced duration of clinical symptoms of mastitis in some experiments. Research has indicated that β-carotene supplementation may enhance immunity and reduce the incidence of retained placenta and metritis in dairy cows. Marginal copper deficiency resulted in reduced neutrophil killing and decreased interferon production by mononuclear cells. Copper supplementation of a diet marginal in copper reduced the peak clinical response during experimental Escherichia coli mastitis. Limited research indicated that chromium supplementation during the transition period may increase immunity and reduce the incidence of retained placenta.
527 citations
TL;DR: More field studies are needed to validate criteria for treatment of metritis, but cows with at least two of RP, fever, dullness, and fetid uterine discharge appear to merit treatment with systemic antibiotics.
Abstract: This paper reviews the causes, impact, treatment, and prevention of retained placenta (RP), metritis, and endometritis in dairy cows. The occurrence of each of these diseases largely depends on immune function in the transition period. Retained placenta affects 5-10% of calvings and greatly increases the risk of metritis and endometritis. More field studies are needed to validate criteria for treatment of metritis, but cows with at least two of RP, fever, dullness, and fetid uterine discharge appear to merit treatment with systemic antibiotics. Clinical endometritis affects 15-20% of cows at 4-6 weeks postpartum; an additional 30-35% have subclinical endometritis between 4 and 9 weeks postpartum. Under specific conditions, treatment of cows with endometritis improved pregnancy rate. Systematic use of prostaglandin F(2alpha) at 5 and 7 weeks postpartum may improve pregnancy rate. The economic benefit of efforts to identify and treat endometritis is herd-specific.
498 citations
TL;DR: Effects on reproduction of dystocia, stillbirth, abortion, milk fever, retained placenta, metritis, cystic ovaries, anestrus, ketosis, displaced abomasum, locomotor disorders, and mastitis were reviewed.
475 citations
TL;DR: The report upon which the current discussion is based was prepared in response to the increasing interest of the dairy industry in the recording of clinical disease data, and two approaches to summarization and reporting were proposed.
401 citations
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Performance Metrics
| Year | Papers |
|---|---|
| 2025 | 10 |
| 2024 | 31 |
| 2023 | 35 |
| 2022 | 57 |
| 2021 | 39 |
| 2020 | 30 |