日本新生児成育医学会雑誌 37(1):129-135;2025 

日本新生児成育医学会雑誌 第37巻 第1号 129 ~ 135頁(2025年)
受付日:2024.04.25
受理日:2024.10.22
早産児に発症した周産期動脈性虚血性脳梗塞の2 例
Two Cases of Perinatal Arterial Ischemic Stroke in Preterm Infants
日本赤十字社愛知医療センター名古屋第二病院 小児科
Department of Pediatrics, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital
松野加奈・加藤 晋・上田健太郎・田原博乃・河嵜翔太・山田崇春・久野 正・幸脇正典
Kana MATSUNO,Shin KATO,Kentaro UEDA,Hirono TAHARA,Shota KAWASAKI,Takaharu YAMADA,Tadashi HISANO,Masanori KOUWAKI
Key Words:perinatal arterial ischemic stroke,premature infant,apnea,seizure,developmental disorder
 周産期動脈性虚血性脳梗塞(perinatal arterial ischemic stroke:PAIS)を発症した早産児は報告例が少なく, 病像が明らかになっていない。今回我々は早産児に発症したPAIS を2 例経験した。1 例目は在胎34 週1 日,体 重1,845g,Apgar スコア1 分値8 点,5 分値9 点で出生した男児。入院中は明らかな神経学的異常所見を認めず, 日齢19 で施行した頭部MRI で左大脳動脈領域のPAIS が発見された。修正3 歳時点での発達は良好であった。2 例目は在胎34 週3 日,体重2,055g,Apgar スコア1 分値3 点,5 分値6 点で出生した男児。明らかな神経学的異 常所見は認めず,日齢22 で施行した頭部MRI で左中大脳動脈,両側後大脳動脈領域のPAIS が発見された。修正 1 歳6 か月時点での発達は良好であった。両症例は神経学的異常所見に乏しく,頭部MRI を施行するまで診断が 困難であった。後期早産児でもPAIS のリスクがあれば,頭部MRI を積極的に考慮してもよいと考える。
Perinatal arterial ischemic stroke( PAIS) in preterm infants is rarely reported, and its features remain unclear. We treated two cases of preterm infants who developed PAIS. Case 1 was a male infant born at 34 weeks 1 day of gestation, weighing 1,845 g, with Apgar scores of 8 and 9 at 1 and 5 minutes. No obvious neurological abnormalities were evident during hospitalization. However, cranial magnetic resonance imaging (MRI) conducted at 19 days of age revealed PAIS in the region of the left middle cerebral artery. At a corrected age of 3 years, the child development was normal. Case 2 was a male infant born at 34 weeks 3 days of gestation, weighing 2,055 g, with Apgar scores of 3 and 6 at 1 and 5 minutes. Although no obvious neurological abnormalities were detected, cranial MRI conducted at 22 days of age revealed PAIS in the regions of the left middle cerebral artery and bilateral posterior cerebral arteries. At a corrected age of 1 year 6 months, the child development was normal. In both cases, neurological signs were absent, making the diagnosis difficult prior to the cranial MRI. These cases suggest that cranial MRI should be actively considered for late preterm infants if there is a risk of PAIS.