{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,28]],"date-time":"2025-07-28T21:59:59Z","timestamp":1753739999964,"version":"3.37.3"},"reference-count":17,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2022,8,15]],"date-time":"2022-08-15T00:00:00Z","timestamp":1660521600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,8,15]],"date-time":"2022-08-15T00:00:00Z","timestamp":1660521600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100002386","name":"Cairo University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100002386","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Ultrasound"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n              <jats:title>Purpose<\/jats:title>\n              <jats:p>To evaluate the difference in cerebral blood flow in neonates with and without extreme unconjugated hyperbilirubinemia.<\/jats:p>\n            <\/jats:sec><jats:sec>\n              <jats:title>Methods<\/jats:title>\n              <jats:p>Transcranial Doppler parameters of 26 full term newborns with extreme unconjugated hyperbilirubinemia (UCH) were compared to 13 postnatal age and sex matched normal healthy neonates serving as controls. Resistance index (RI), pulsatility index (PI) and peak systolic velocity (PSV) were measured in the middle cerebral, internal carotid and posterior cerebral arteries on both sides by transcranial color Doppler ultrasound.<\/jats:p>\n            <\/jats:sec><jats:sec>\n              <jats:title>Results<\/jats:title>\n              <jats:p>An increase in cerebral blood flow (decreased RI, PI and increased PSV) was observed in the extreme unconjugated hyperbilirubinemia (UCH) group. There was positive correlation between total serum bilirubin level and peak systolic velocity and vice versa with resistivity and pulsatility indices. Eight neonates developed clinical features of acute bilirubin encephalopathy and showed significantly increased peak systolic velocity in the right middle cerebral artery compared to those with normal outcome. Resistivity index and pulsatility index were lower in patients managed by exchange transfusion compared to those managed with phototherapy.<\/jats:p>\n            <\/jats:sec><jats:sec>\n              <jats:title>Conclusion<\/jats:title>\n              <jats:p>An increase in cerebral blood flow was observed in neonates with UCH compared to those without hyperbilirubinemia. By assessing the cerebral blood flow velocity, resistivity index (RI), and pulsatility index (PI) of particular intracranial arteries, the transcranial Doppler can identify the at-risk neonates, for development of neurological affliction in extreme unconjugated hyperbilirubinemia.<\/jats:p>\n            <\/jats:sec>","DOI":"10.1007\/s40477-022-00704-0","type":"journal-article","created":{"date-parts":[[2022,8,15]],"date-time":"2022-08-15T06:02:32Z","timestamp":1660543352000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Role of transcranial Doppler in assessment of cerebral blood flow in full term neonates with extreme unconjugated hyperbilirubinemia"],"prefix":"10.1007","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5763-6315","authenticated-orcid":false,"given":"Sara Mahmoud","family":"Kamel","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reem Mahmoud","family":"Badr-Eldin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mahmoud Mostafa","family":"Arafat","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rania H.","family":"Hashem","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,8,15]]},"reference":[{"key":"704_CR1","doi-asserted-by":"publisher","first-page":"558","DOI":"10.1542\/peds.94.4.558","volume":"94","author":"Practice parameter","year":"1994","unstructured":"Practice parameter (1994) management of hyperbilirubinemia in the healthy term newborn. 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The ethics committee reference number is not available. A verbal consent was taken from the legal guardians of all patients accepting to participate in our research work.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval and consent to participate"}},{"value":"The legal guardians of all patients included in this research gave written informed consent to publish the data contained within this study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}}]}}