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Revista de la Facultad de Medicina (México)
versão On-line ISSN 2448-4865versão impressa ISSN 0026-1742
Resumo
GERALDO-MURILLO, José Adrián; PEREZ, Juan Carlos e RIVERA ROJAS, José Adrián. True Knot as a Cause of Persistent Fetal Tachycardia. Case Report. Rev. Fac. Med. (Méx.) [online]. 2022, vol.65, n.6, pp.20-25. Epub 20-Jan-2023. ISSN 2448-4865. https://doi.org/10.22201/fm.24484865e.2022.65.6.04.
Umbilical cord abnormalities are associated with adverse effects during pregnancy. The true umbilical cord knot is present in 0.3-2.1% of pregnancies and has been associated with fetal death. Risk factors include maternal age, high BMI, multiparity, hypertensive disorders, smoking, polyhydramnios, gestational diabetes, male sex of the fetus, and other malformations. Prenatal diagnosis of the true knot is rare and challenging. Most are diagnosed at birth and only 0.08% of true knots are diagnosed prenatally. Non-reassuring cardiotocography traces may be present, reflecting hypoxic or mechanical stress disrupting fetal oxygenation. The aim of this case report is to present a case of true umbilical cord knot presenting with persistent fetal tachycardia during labor, resolved by vaginal delivery.
Palavras-chave : True knot; umbilical cord; fetal tachycardia; stillbirth; fetal asphyxia.