User:Mr. Ibrahem/Placenta accreta spectrum
Placenta accreta spectrum | |
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Other names | Placenta accreta, morbidly adherent placenta[1] |
Types of placenta accreta | |
Specialty | Obstetrics |
Complications | Postpartum bleeding, disseminated intravascular coagulopathy, bladder injury[2] |
Types | Accreta, increta, percreta[2] |
Risk factors | Prior C-sections, high number of pregnancies, older age, uterine surgery, pelvic irradiation[2] |
Diagnostic method | Based on ultrasound[2] |
Treatment | C-section at 34 to 36 weeks, blood transfusion, hysterectomy[2] |
Frequency | 1 in 272 pregnancies[1] |
Placenta accreta is when the placenta attaches abnormally into the muscular layer of the uterine wall rather than just to the endometrium.[2] The most common complication is postpartum bleeding, with other potential complications including disseminated intravascular coagulopathy (DIC) and bladder injury.[2] The baby is also at higher risk of a poor outcome.[2]
Risk factors include prior C-sections, a high number of prior pregnancies, older age, uterine surgery, and pelvic irradiation.[2] Three grades of disease are defined by the depth of attachment into the muscular layers: accreta, increta, and percreta.[2] In accreta chorionic villi attach to the myometrium, in increta they invade into the myometrium, while in percreta they invade to the outside of the uterus.[3] Diagnosis is generally by ultrasound, though magnetic resonance imaging may occasionally be used.[2]
Treatment often involve early delivery at 34 to 36 weeks via a C-section.[2] Sufficient blood should be avaliable incase transfusion is required.[2] If the placenta does not deliver, a hysterectomy is recommended though some techniques may be able to preserve fertility.[2] Tranexamic acid may be used to try to decrease blood loss.[2] Rates of placenta accreta have increased from the 1960s to the 2010s.[2] As of 2016, they affect an estimated 1 in 272 pregnancies.[1]
References[edit]
- ^ a b c Society of Gynecologic Oncology; American College of Obstetricians and Gynecologists and the Society for Maternal–Fetal Medicine; Cahill, Alison G.; Beigi, Richard; Heine, R. Phillips; Silver, Robert M.; Wax, Joseph R. (2018-12-01). "Placenta Accreta Spectrum". American Journal of Obstetrics and Gynecology. 219 (6): B2–B16. doi:10.1016/j.ajog.2018.09.042. ISSN 1097-6868. PMID 30471891.
- ^ a b c d e f g h i j k l m n o p Shepherd, Alexa M.; Mahdy, Heba (2020). "Placenta Accreta". StatPearls. StatPearls Publishing. PMID 33085435.
- ^ "Placenta Accreta - Gynecology and Obstetrics". Merck Manuals Professional Edition. Retrieved 23 October 2020.