| Change of Cerebral Blood Flow Velocity in Normal Newborn Infants. |
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Sang Hee Kim1, Se Jin Kang1, Chang Sung Son1, Pyung Hwa Choe1, Nam Joon Lee2 |
1Department of Pediatrics, College of Medicine, Korea University, Seoul, Korea
2Department of Radiology, College of Medicine, Korea University, Seoul, Korea |
| 정상신생아의 뇌혈류속도 변동에 관하여 |
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김상희1, 강세진1, 손창성1, 최평화1, 이남준2 |
1고려대학교 의과대학 소아과학교실
2고려대학교 의과대학 방사선과학교실 |
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Received: 10 July 1989 • Accepted: 10 July 1989 |
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| Abstract |
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The purpose of this study was to determine the cerebral hemodynamic change in normal newborn
infant before and after ductal closure. The measurements of cerebral blood flow velocity of internal
carotid artery, middle cerebral artery and anterior cerebral artery were obtained using a 5 MHzpulsed
wave Doppler and pulsatility indices were calculated from the Pourcelot index in 15 normal fullterm
newborn infants.
The newborn infants were bom at Korea University Hospital from June 1 to August 31, the mean
birth weight was 3.45 ±0.41 kg and the mean gestational age 39.7 ±1.5 weeks.
The results were as follows.
1) Color and pulsed wave Doppler demonstrated reverse ductal flow in 15 of 15 infants at the first
examination (mean age 5.8±2.7 hours) and the second study was performed at a mean time 35.6±13.
1 hours when ductal flow was no longer demonstrable in the pulmonary artery.
2) Ductal closure was associated with a significant decrease in pulsatility indices in internal carotid
artery, middle cerebral artery and anterior cerebral artery (p< 0.001).
3) The increase in the diastolic velocity of internal carotid artery, middle cerebral artery and
anterior cerebral artery was statistically significant (p< 0.001).
4) The systolic velocity of internal carotid artery was increased significantly (p<0.05), but the
increase of reminders were not significant.
5) The mean blood pressure measured after ductal closure in riht arm was slightly increased but not
significant statistically. |
| Key Words:
Pulsatility Index |
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