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Both vascular territories exhibit higher impedance patterns in pregnancies complicated\nby fetal growth restriction (FGR), hypertensive disorders, fetal anemia, and chromosomal abnormalities.\nEarly identification of these complications is critical in obstetric practice, to reduce\nperinatal morbidity and mortality through prevention and close antenatal surveillance. Available\ndata suggest that aortic and umbilical impedances follow the same variation pattern as pregnancy\nprogresses. This observation implies that both vessels may be considered as a single artery, referred\nto as the \u201caortoumbilical column\u201d. Our hypothesis posits that changes in the hemodynamic\npattern of this column could identify high-risk pregnancies, particularly those complicated by\npreeclampsia, FGR, intrauterine fetal demise, fetal aneuploidies, and fetal anemia. Understanding\nvascular embryogenesis and the FVWs of the aortic and umbilical arteries enables comprehension\nof impedance changes throughout normal pregnancies. The continuous variation in impedance\nalong a single vessel supports our concept of the aortoumbilical column. Deviations\nfrom the regular pattern could assist in identifying compromised fetuses during early pregnancy.\nFurther research on normal aortoumbilical column FVW and the development of reference charts\nis necessary to consider this arterial column as a screening tool in clinical practice.<\/jats:p>\n<\/jats:sec>","DOI":"10.2174\/011573403x255256230919061018","type":"journal-article","created":{"date-parts":[[2023,10,19]],"date-time":"2023-10-19T19:01:39Z","timestamp":1697742099000},"update-policy":"https:\/\/doi.org\/10.2174\/bsp_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fetal Aortic and Umbilical Doppler Flow Velocity Waveforms in\nPregnancy: The Concept of Aortoumbilical Column"],"prefix":"10.2174","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7898-5132","authenticated-orcid":true,"given":"De Almeida","family":"Ana Beatriz","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Centro Hospitalar Universit\u00e1rio de Santo Ant\u00f3nio, University of Oporto,\nOporto, Portugal"},{"name":"Instituto de Ci\u00eancias Biom\u00e9dicas Abel Salazar, University of Oporto, Oporto, Portugal"}]},{"given":"Morais","family":"Ana Rita","sequence":"additional","affiliation":[{"name":"Instituto de Ci\u00eancias Biom\u00e9dicas Abel Salazar, University of Oporto, Oporto, Portugal"}]},{"given":"Ferreira","family":"Miguel","sequence":"additional","affiliation":[{"name":"Instituto de Ci\u00eancias Biom\u00e9dicas Abel Salazar, University of Oporto, Oporto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3906-0775","authenticated-orcid":true,"given":"Gaio","family":"Ana Rita","sequence":"additional","affiliation":[{"name":"Department\nof Mathematics, Faculty of Sciences, University of Oporto, Oporto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0491-0752","authenticated-orcid":true,"given":"Guedes-Martins","family":"Lu\u00eds","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Centro Hospitalar Universit\u00e1rio de Santo Ant\u00f3nio, University of Oporto,\nOporto, Portugal"},{"name":"Instituto de Ci\u00eancias Biom\u00e9dicas Abel Salazar, University of Oporto, Oporto, Portugal"},{"name":"Fetal Medicine Centre, Centro Hospitalar\nUniversit\u00e1rio de Santo Ant\u00f3nio, University of Oporto, Oporto, Portugal"}]}],"member":"965","reference":[{"key":"ref=1","doi-asserted-by":"publisher","first-page":"31","DOI":"10.1016\/0028-2243(92)90211-G","volume":"47","author":"K\u00fcnzel W.","year":"1992","unstructured":"K\u00fcnzel W.; Jovanovic V.; Gr\u00fc\u03b2ner S, Colling T. 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