{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T13:30:18Z","timestamp":1781530218530,"version":"3.54.1"},"reference-count":14,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2019,7,26]],"date-time":"2019-07-26T00:00:00Z","timestamp":1564099200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background and Objectives: Doppler ultrasound of umbilical and fetal vessels is useful for monitoring fetal well-being, fetal anemia, intrauterine growth retardation, and other perinatal outcomes. The adverse perinatal outcome and circulatory changes can be reflected in fetal Doppler studies. The aim of this study was to evaluate the effect of increased pressure exerted on the maternal abdominal wall during routine ultrasound on the middle cerebral artery (MCA), resistance index (RI), pulsatility index (PI), and peak systolic velocity (PSV). Materials and Methods: A prospective study was conducted, in which we included 40 pregnant women between 24 + 0 and 41 + 3 gestational weeks (GW), with singleton pregnancies, without any associated pathologies, undergoing routine US examination. We recorded the flow velocity waveforms in the MCA, and we measured the RI, PI, PSV, and the applied pressure on to the maternal abdominal wall\u2014needed for a proper evaluation of MCA. We then repeated the same measurements at two different higher pressure levels, at the same time having a proper image of the targeted vessel. Results: We found significant differences for the PI and RI levels with an increase in abdominal pressure (median PI 1.46, 1.58, and 1.92, respectively; median RI 0.74, 0.78, and 0.85, respectively; p &lt; 0.05), for both PI and RI. At the same time, we found no significant differences for PSV in the studied group in relationship with increase in abdominal pressure (median PSV 39.56, 40.10, and 39.70, respectively; p &gt; 0.05). Conclusions: The applied abdominal pressure by the examiner\u2019s hand, during routine US scan in pregnancy, can modify the MCA parameters of blood flow resistance (PI and RI) when measured by Doppler US, thus influencing the diagnostic accuracy in a series of pregnancy associated pathologies, such as chronic fetal distress (CFD) or intrauterine growth restriction (IUGR).<\/jats:p>","DOI":"10.3390\/medicina55080410","type":"journal-article","created":{"date-parts":[[2019,7,26]],"date-time":"2019-07-26T11:55:22Z","timestamp":1564142122000},"page":"410","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Ultrasound Probe Pressure on the Maternal Abdominal Wall and the Effect on Fetal Middle Cerebral Artery Doppler Indices"],"prefix":"10.3390","volume":"55","author":[{"given":"Andrei Mihai","family":"M\u0103lu\u021ban","sequence":"first","affiliation":[{"name":"2nd Department of Obstetrics and Gynecology, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Delia","family":"Clinciu","sequence":"additional","affiliation":[{"name":"\u201cDominic Stanca\u201d Obstetrics and Gynecology Clinic, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u0218tefan Claudiu","family":"Mirescu","sequence":"additional","affiliation":[{"name":"Molecular Biology and Biotechnology Department, Biology and Geology Faculty, Babes-Bolyai University, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R\u0103zvan","family":"Ciortea","sequence":"additional","affiliation":[{"name":"2nd Department of Obstetrics and Gynecology, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marina","family":"Dudea-Simon","sequence":"additional","affiliation":[{"name":"2nd Department of Obstetrics and Gynecology, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dan","family":"Mihu","sequence":"additional","affiliation":[{"name":"2nd Department of Obstetrics and Gynecology, \u201cIuliu Hatieganu\u201d University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"232","DOI":"10.1016\/j.mjafi.2016.12.008","article-title":"Doppler indices of the umbilical and fetal middle cerebral artery at 18\u201340 weeks of normal gestation: A pilot study","volume":"73","author":"Srikumar","year":"2017","journal-title":"Med. 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Fetal Neonatal Med."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"740","DOI":"10.1111\/j.1471-0528.1990.tb16250.x","article-title":"Maternal abdominal pressure alters fetal cerebral blood flow","volume":"97","author":"Vyas","year":"1990","journal-title":"Br. J. Obstet. Gynaecol."}],"container-title":["Medicina"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1648-9144\/55\/8\/410\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:10:09Z","timestamp":1760188209000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1648-9144\/55\/8\/410"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,7,26]]},"references-count":14,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2019,8]]}},"alternative-id":["medicina55080410"],"URL":"https:\/\/doi.org\/10.3390\/medicina55080410","relation":{},"ISSN":["1648-9144"],"issn-type":[{"value":"1648-9144","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,7,26]]}}}