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IJ Radiology

An Innovative Journal in the Field of Radiology

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https://doi.org/10.5812/iranjradiol.48024

Diagnostic Value of Doppler Sonographic Findings in Neonatal Hypoxic Ischemic Brain Damage

Author(s):
Fatemeh YarmahmoodiFatemeh Yarmahmoodi1,*, Parisa PishdadParisa Pishdad2, Seyyed Mostajab RazavinejadSeyyed Mostajab Razavinejad2
1MD, Radiologist
2Shiraz Universities of Medical Sciences, Shiraz, Iran
IJ Radiology:Vol. 14, issue Special Issue; e48024
Published online:Apr 12, 2017
Article type:Abstract
Received:Dec 20, 2016
Accepted:Feb 07, 2017
How to Cite:Yarmahmoodi F, Pishdad P, Razavinejad SM. Diagnostic Value of Doppler Sonographic Findings in Neonatal Hypoxic Ischemic Brain Damage. I J Radiol. 2017;14(Special Issue):e48024. doi: https://doi.org/10.5812/iranjradiol.48024

Abstract

Background:

Significant improvements were done in perinatal and neonatal care in last decades. But Hypoxic Ischemic Encephalopathy (HIE) in neonates is still the important couse of neonatal mortality end adverse developmental sequelas. Neonatal HIE is defined when there is evidence of fetal distress, metabolic acidosis of neonate (PH < 7.1 and base deficit more than 12) and presence of encephalopathy. HIE can be diagnosed by presenve of some clinical Finding (Sarnat- Sarnat staging) and diagnostic imaging. Although Magnetic Resonance Imaging (MRI) is the gold standard and prefered modality for diagnosis of HIE, but it is not possible to do for ill and critical babies who are admitted in Neonatal Intensive Care Unit (NICU).Availability and safety of sonography make it a useful tool for early diagnosis of HIE, that helps physicians to do early and proper treatment.

Methods:

In this study we choose 32 neonate according to inclusion criteria of HIE. Doppler sonography of brain arteries was done in first 24 hours after birth.Brain MRI was done as soon as possible when clinical canditions permits doing it.

Results:

This study showed there is significant linear correlation between severity of HIE that is defined by sonographic finding compaired with severity of HIE showed by MRI finding and clinical date. Cut off point of resistive Index (RI) for all three brain arteries (ACA.MCA and BA) WAS 0.62 , The point of optimal sensitivity and specifity for diagnosis of HIE.

Conclusions:

Sonography is the excellent screening diagnostic modality for determination of severity and predicition of prognosis in neonatal HIE. Modern sonographic equipment can detect many brain abnormalities. Measuring cerebral Blood Flow Velocities (BFV) and RI of brain arteries with Doppler sonography is useful for predicition of severity of HIE. Use of this modality is helpful for early diagnosis and therapy of neonates with critical condition, that could decrease sequala of disease. Although MRI can detect more details and must be done when the babies clinical condition is appropriate for transport to MRI unit.

Keywords
Neonatal Hypoxic Ischemic Encephalopathy
Brain Doppler Sonography
Brain MRI

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