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  • Title: Abnormal sharp transients on electroencephalograms in preterm infants with periventricular leukomalacia.
    Author: Okumura A, Hayakawa F, Kato T, Maruyama K, Kubota T, Suzuki M, Kidokoro H, Kuno K, Watanabe K.
    Journal: J Pediatr; 2003 Jul; 143(1):26-30. PubMed ID: 12915820.
    Abstract:
    OBJECTIVE: To determine the clinical significance of abnormal sharp transients other than positive rolandic sharp waves (PRS), electroencephalograms were used for the diagnosis of periventricular leukomalacia (PVL). STUDY DESIGN: We evaluated 126 electroencephalograms from 93 preterm infants; 31 infants had PVL, and 62 were control infants. Frontal sharp waves (FS) were defined as sharp transients of positive polarity with an amplitude >100 microV. Occipital sharp waves (OS) were defined as those of negative polarity with an amplitude >150 microV. FS, OS, or PRS were considered to be present when there were >0.1 per minute. RESULTS: The number of FS per minute was significantly higher in the PVL group than in the control group during days 0 to 4 and 5 to 7. The number of OS per minute was also significantly higher in the PVL group than in the control group during days 0 to 4, 5 to 7, and 8 to 14. The sensitivity of FS or OS was relatively high but that of PRS was low. The presence of two or more types of abnormal sharp transients was correlated with a poor outcome. CONCLUSIONS: FS or OS may be useful for predicting which infant will have PVL.
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