التفاصيل البيبلوغرافية
| العنوان: |
Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDoppler |
| المؤلفون: |
Siv Steinsmo Ødegård, Hans Torp, Turid Follestad, Martin Leth-Olsen, Ragnhild Støen, Siri Ann Nyrnes |
| المصدر: |
Frontiers in Pediatrics, Vol 10 (2022) |
| بيانات النشر: |
Frontiers Media S.A., 2022. |
| سنة النشر: |
2022 |
| المجموعة: |
LCC:Pediatrics |
| مصطلحات موضوعية: |
cerebral hemodynamics, cerebroprotective, autoregulation, low frequency oscillations, cerebral short scale variability, Doppler ultrasound, Pediatrics, RJ1-570 |
| الوصف: |
BackgroundA cerebroprotective effect of low frequency oscillations (LFO) in cerebral blood flow (CBF) has been suggested in adults, but its significance in neonates is not known. This observational study evaluates normal arterial and venous cerebral blood flow in healthy neonates using NeoDoppler, a novel Doppler ultrasound system which can measure cerebral hemodynamics continuously.MethodUltrasound Doppler data was collected for 2 h on the first and second day of life in 36 healthy term born neonates. LFO (0.04–0.15 Hz) were extracted from the velocity curve by a bandpass filter. An angle independent LFO index was calculated as the coefficient of variation of the filtered curve. Separate analyses were done for arterial and venous signals, and results were related to postnatal age and behavioral state (asleep or awake).ResultsThe paper describes normal physiologic variations of arterial and venous cerebral hemodynamics. Mean (SD) arterial and venous LFO indices (%) were 6.52 (2.55) and 3.91 (2.54) on day one, and 5.60 (1.86) and 3.32 (2.03) on day two. After adjusting for possible confounding factors, the arterial LFO index was estimated to decrease by 0.92 percent points per postnatal day (p |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2296-2360 |
| Relation: |
https://www.frontiersin.org/articles/10.3389/fped.2022.929117/full; https://doaj.org/toc/2296-2360 |
| DOI: |
10.3389/fped.2022.929117 |
| URL الوصول: |
https://doaj.org/article/65909630889544e3a69968404484c14b |
| رقم الانضمام: |
edsdoj.65909630889544e3a69968404484c14b |
| قاعدة البيانات: |
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