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| Doppler Ultrasound Evaluation of Cerebral Blood Flow Pattern in Neonates with Congenital Heart Disease |
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| Tae Hoon Kim, M.D.* Mi Young Kim, M.D.** Yang Min Kim, M.D.** Soo-Hyun Lee, M.D.** Soo-Jin Kim, M.D.*** Woong-Han Kim, M.D.**** |
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| *Department of Radiology, Yongdong Severance Hospital, Seoul **Department of Radiology, Sejong General Hospital, Pucheon ***Department of Pediatrics, Sjong General Hospital, Pucheon ****Department of Cardiac Surgery, Sejong General Hospital, Pucheon |
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| PURPOSE : To evaluate intracerebral resistive index (RI) values in neonates with congenital heart disease and to investigate
their changes after the corrective surgery of the congenital heart disease.
MATERIALS and METHODS : Sixty nine neonates with congenital heart disease who underwent brain ultrasonography
were included. Resistive index values were obtained at the genu portion of the anterior cerebral arteries through
the anterior fontanelles. The patients were divided into 4 groups according to the presence of associated patent
ductus arteriosus (PDA) and intracranial RI values. We evaluated the types of congenital heart disease that could
influence RI values.
RESULTS : Resistive index values were statistically higher in patients with PDA than in patients without PDA
(p<0.05). RI values were higher in cases of large PDA with left-to-right shunt, but within the normal range in
cases of small or nearly closing PDA or large PDA with bidirectional blood flow or with right-to-left shunt. For
those patients without PDA, RI values were higher when patients had pulmonary atresia with multiple collateral
vessels into the lung or when truncus arteriosus was present. RI values were also high in patients with hypoplastic
left heart syndrome. RI values were normalized after the ligation of PDA, but patients with hypoplastic left
heart syndrome showed persistently high RI values even after the Norwood’s operation with Blalock-Taussig
shunt.
CONCLUSION : RI values are influenced by various congenital heart diseases except PDA. Therefore, the presences
of the congenital heart disease and its hemodynamic changes should be taken into consideration in the evaluation
of the intracranial RI values using Doppler ultrasonography. |
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| Keyword : Ultrasound(US), Doppler Studies Brain Brain, blood flow |
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pdf파일 : 33-38 김태훈.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2003 ; 22 (1) : p.33-38
