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Long-term outcomes of infantile spasms

Korean Journal of Pediatrics 2010;53(1):80-84.
Published online January 15, 2010.
Long-term outcomes of infantile spasms
Seak Hee Oh, Eun-Hye Lee, Min-Hee Joung, Mi-Sun Yum, Tae-Sung Ko
Department of Pediatrics, Asan Medical Center Children`s Hospital, University of Ulsan College of Medicine, Seoul, Korea.
영아 연축 환아의 장기적 예후에 관한 고찰
오석희, 이은혜, 정민희, 염미선, 고태성
울산대학교 의과대학 서울아산병원 소아과학교실
Tae-Sung Ko, Tel: +82.2-3010-3725, Fax: +82.2-3010-3390, Email: tsko@amc.seoul.kr
: The aims of this study were to investigate the long-term outcomes in children with infantile spasms (IS) and to identify the prognostic factors influencing their neurodevelopment.
: We retrospectively evaluated seventy two children over five years old who were treated for IS at Asan Medical Center, Seoul, Korea, between 1994 and 2007. Forty-three children were contacted by telephone or medical follow-up to assess their current neurodevelopmental status. Multiple logistic regression was used to calculate odds ratios (ORs) and 95% confidence interval (95% CIs) of risk factors for unfavorable outcomes.
: The mean follow-up duration for these 43 children was 7.2¡¾1.5 years (range, 4.5 to 13.0 years). Of these, 13 (30.2%) had cryptogenic and 30 (69.8%) had symptomatic IS. Eleven (25.6%) children were initially treated with adrenocorticotrophic hormone (ACTH) therapy, with a mean treatment lag of 1.3¡¾1.9 months (range; 0.1 to 7.0 months). Eighteen (41.8%) children clinically responded to initial treatment, as shown by EEG response. Overall, 22 (51.2%) children had at least moderate neurodevelopmental disorders and 2 (4.8%) died. In univariate analysis, etiology (symptomatic) and poor electroclinical response to initial treatment were related to long-term unfavorable outcomes. In multivariate analysis, response to primary treatment was the sole significant independent risk factor with a high OR.
: Overall prognosis of children with IS was poor. Electroclinical non-responsiveness to initial treatment was related to unfavorable long-term outcomes, indicating that initial control of seizures may be important in reducing the likelihood of poor neurodevelopment.
Key Words: Infantile spasm, Long-term outcome, Prognostic factor

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