1985년 10월부터 동년 12월까지 3개월간 본원산부인과에 내원하여 초음파검사를 실행한 224명의 산모와 가임년령에 있는 47명의 비임신군을 대상으로 임신중 수신증에 대한 검토 및 분석을 하여 다음과 같은 결론을 얻었다 1 임신중 수신증의 빈도는 우측신이 40%, 좌측신이 20%이었으며 우측이 좌측보다 수신증의 정도가 기하였다 2 우측신이 좌측신에 비해 수신증 발생빈도가 2배로 높았다 3 임신기간 동안 신배의 직경이 증가하는 양상은 임신초기부터 증가하였으며 임신 13주이후 괄목할만한 증가를 보였다 4 임신기간중 수신증이 발생하는 시기는 9∼11주로 나타났다 5 분만력이나 요로감염은 수신증의 정도에 별다른 영향력이 없었다

Real-time sonographic examination of kidneys was obtained of 271 subjects, comprising 224 pregnants and 47 control subjects This study was undertaken to determine the incidence and severity of hydronephrosis of pregnancy, the incidence of dilatation of right and left kidneys during pregnancy, the pattern of increase of calyceal diameter during pregnancy, the time of onset of hydronephrosis during pregnancy, the effects of parity on the degree of calyceal dilatation, and the effects of urinary tract problems on the degree of calyceal dilatation The results was as follows: Incidence of Hydronephrosis in pregnancy was found to be 40% on the right side and 20% on the left side Incidence of hydronephrosis was more frequent in the right side than left side Calyceal diameter of both kidney was found to increase gradually throughout pregnancy, the right was more rapidly than the left The onset of dilatation was revealed 9-11 gestational week Neither parity nor a history of urinary tract infection was found to be relevant to the degree of calyceal dilatation