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Journal of the Korean Pediatric Society 2003;46(12):1274-1278.
Published online December 15, 2003.
A Case of Micturition Syncope in a Child
Sun Youn Lee1, Su Jeong Ryu1, Deok Soo Kim2, Young Hwue Kim1, Tae Sung Ko1, Jae Moon Kim3
1Department of Pediatrics, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea
2Department of Pediatrics, Kangbuk Samsung Hospital, College of Medicine, Sungkyunkwan University, Seoul, Korea
3Department of Neurology, College of Medicine, Chungnam National University, Taejon, Korea
소아에서 발현한 배뇨 후 실신 1례
이선연1, 류수정1, 김덕수2, 김영휘1, 고태성1, 김재문3
1울산대학교 의과대학 서울아산병원 소아과
2성균관대학교 의과대학 강북삼성병원 소아과
3충남대학교 의과대학 신경과학교실
Correspondence:  Tae Sung Ko,
Email: tsko@amc.seoul.kr
Abstract
Syncope in children and adolescents have a common occurrence according for up to 15% before adulthood. Micturition syncope, a kind of situational syncope, can be considered a form of reflex syncope. It can typically occur in healthy young men after rising from bed in the early morning who experience sudden loss of consciousness during or immediately after urination. The mechanism of micturition syncope is not completely understood, but it has been suggested that vasovagal reflex mediated bradycardia and peripheral vasodilation and decreased venous return due to Valsalva effect and standing position lead to the decrease in cerebral blood flow resulting in syncope. The causes of syncope are variable. So complete history taking, physical examination, electrocardiography, exercise stress test, echocardiography, head-up tilt table test, electroencephalography(EEG), brain magnetic resonance image and urodynamic study should be required for the diagnosis of micturition syncope. There were several reports about micturition syncope. However, literature of micturition syncope at the pediatric age has rarely been reported in Korea so far. Therefore, we report a case of a 9- year-old boy with micturition syncope with typical EEG findings of high amplitude delta wave and flattening during syncope.
Key Words: Syncope, Micturition, Head-up tilt test, Electroencephalography


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