True umbilical cord knots are not always knotty: a case report
DOI:
https://doi.org/10.18203/issn.2454-2156.IntJSciRep20213699Keywords:
True knot, Umbilical cord, Cord accident, Live birthAbstract
A true umbilical cord knot (TUCK) is a rare event, complicating 0.3-1.3% of all pregnancies. Prenatal diagnosis is not usual, as it is mostly discovered at delivery, when the knot is identified. True cord knots are mostly asymptomatic, but can be associated with adverse perinatal outcomes such as birth asphyxia and foetal demise, owing to compression of the umbilical vessels within the knot. This compression, however, is largely dependent on how tightly the knot is formed. We report a 30-year-old booked gravida 2, para 1, with a living child, who had spontaneous vaginal delivery of a healthy male baby at term, with incidental finding of a single loose TUCK at delivery. The umbilical cord was 81 cm long. The baby weighed 3600 g at birth, with 1- and 5-minutes Apgar scores of 9 and 10 respectively, and no adverse perinatal occurrence.
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References
Karakecili S, Barut MU, Cakmak G, Ozturk E, Bozkurt M, Demir M. True knot of the umbilical cord in advanced weeks of pregnancy: a case report. Proc Obstet Gynecol. 2017;7(3):1-5.
Airas U, Heinonen S. Clinical significance of true umbilical knots: a population-based analysis. Am J Perinatol. 2002;19(03):127-32.
Räisänen S, Georgiadis L, Harju M, Keski-Nisula L, Heinonen S. True umbilical cord knot and obstetric outcome. Int J Gynecol Obstet. 2013;122(1):18-21.
Scioscia M, Fornalè M, Bruni F, Peretti D, Trivella G. Four‐dimensional and Doppler sonography in the diagnosis and surveillance of a true cord knot. J Clin Ultrasound. 2011;39(3):157-9.
Ikechebelu JI, Eleje GU, Ofojebe CJ. True umbilical cord knot leading to fetal demise. Ann Med Health Sci Res. 2014;4(8):155-8.
Hershkovitz R, Silberstein T, Sheiner E, Shoham-Vardi I, Holcberg G, Katz M, et al. Risk factors associated with true knots of the umbilical cord. Eur J Obstet Gynecol Reprod Biol. 2001;98(1):36-9.
Moessinger AC, Blanc WA, Marone PA, Polsen DC. Umbilical cord length as an index of fetal activity: experimental study and clinical implications. Pediatr Res. 1982;16(2):109-12.
Saadia Z, Farrukh R. Association between fetal sex ratio and maternal eclampsia- a descriptive study in Pakistani population. Internet J Gynecol Obstet. 2009;12:3.
Di Renzo GC, Rosati A, Sarti RD, Cruciani L, Cutuli AM. Does fetal sex affect pregnancy outcome?. Gend Med. 2007;4(1):19-30.
Moshiri M, Zaidi SF, Robinson TJ, Bhargava P, Siebert JR, Dubinsky TJ, et al. Comprehensive imaging review of abnormalities of the umbilical cord. Radiographics 2014;34(1):179-96.
Henry E, Andres RL, Christensen RD. Neonatal outcomes following a tight nuchal cord. J Perinatol. 2013; 33(3):231–234.