Dunn P M
Clin Orthop Relat Res. 1976 Sep(119):23-7.
At least 1 per cent of all newborn infants in the United Kingdom have CDH (Fig 10). Among these infants, approximately 85 per cent are normally formed and 15 per cent malformed. Among the normally formed infants, 90 per cent of the CDH are of the Grade 1 type, and 10 per cent of Grades 2 and 3. Such infants have a perinatal mortality of about 5 per cent. In contrast, among the malformed infants, about 50 per cent are CDH Grade 1, and 50 per cent Grades 2 and 3; their perinatal mortality is around 70 per cent. In other words, a much higher proportion than usual of the severe grades of CDH are found among the infants with a high perinatal mortality.
在英国，至少1%的新生儿患有先天性膈疝（图10）。在这些婴儿中，约85%身体结构正常，15%存在畸形。在身体结构正常的婴儿中，90%的先天性膈疝为1级，10%为2级和3级。这类婴儿的围产期死亡率约为5%。相比之下，在畸形婴儿中，约50%为先天性膈疝1级，50%为2级和3级；他们的围产期死亡率约为70%。换句话说，在围产期死亡率高的婴儿中，严重等级的先天性膈疝比例比平常高得多。
