✔️Subchorionic hemorrhage or hematoma includes those hematomas between the chorion and decidua.
✔️SCH usually occurs in the first trimester and its incidence ranges from 0.46% to 39.5% during natural conception,while patients undergoing IVF have a higher risk of SCH with an incidence ranging from 4% to 48%.
➡️Most SCH occurs spontaneously and no certain cause can be distinguished.
➡️It is possible that a poorly developed vascular bed characterized by shallow trophoblast invasion and friable blood vessels, during implantation and development the of placenta, is a cause.
➡️It is the likely reason that can explain the higher incidence after IVF than natural conception.
✔️SCH has been associated with increased risk of miscarriage, stillbirth, abruption, preterm birth and preterm premature rupture of membranes.
➡️The risk of miscarriage increases when it amounts to 25% or more of the volume of the gestational sac.
➡️In a meta-analysis of 7 comparative studies, pregnant individuals with SCH had double the odds of pregnancy loss compared with those without (18 versus 9%).
✔️Small SCH is usually discovered by ultrasonography, while larger SCH may have symptoms like abdominal pain and vaginal bleeding.
➡️When the diagnosis of SCH is established, it is difficult to tell whether the hematoma will be absorbed spontaneously or persistently exist as well as whether it leads to adverse pregnancy outcome.
✔️For most SCH patients, a strategy of follow-up and observation is appropriate.
➡️Bed-rest does not improve outcomes.
➡️Progesterone has been used to treat SCH and symptoms of threatened miscarriage, but it is lacking in strong clinical evidence.
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Негізгі бет Subchorionic hemorrhage/hematoma
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