The factors associated with the efficacy of indomethacin treatment in premature infants with patent ductus arteriosus

인도메타신 투여 시 미숙아 동맥관개존 치료효과에 영향을 미치는 인자

  • Yoon, Min Jeong (Department of Pediatrics, College of Medicine, Kyunghee University) ;
  • Yoon, Hye Sun (Department of Pediatrics, College of Medicine, Eulji University) ;
  • Chung, Sung Hoon (Department of Pediatrics, College of Medicine, Kyunghee University) ;
  • Han, Mi Young (Department of Pediatrics, College of Medicine, Kyunghee University) ;
  • Bae, Chong Woo (Department of Pediatrics, Kyunghee University East-West Neo-medical Center)
  • 윤민정 (경희대학교 의과대학 소아과학교실) ;
  • 윤혜선 (을지대학교 소아과학교실) ;
  • 정성훈 (경희대학교 의과대학 소아과학교실) ;
  • 한미영 (경희대학교 의과대학 소아과학교실) ;
  • 배종우 (경희대학교 동서신의학병원 소아과학교실)
  • Received : 2007.04.13
  • Accepted : 2007.05.17
  • Published : 2007.06.15

Abstract

Purpose : Indomethacin treatment is successful in about 90% of patent ductus arteriosus (PDA) in premature infants, but in some, repeated administration or surgical closure is required. The object of the present study is to determine the factors affecting the efficacy of indomethacin treatment and to predict the treatment result. Method : The 29 preterm neonates, admitted to neonatal intensive care unit of Kyunghee university medical center and Eulji university hospital between September 2002 and April 2006 were diagnosed of PDA and treated with indomethacin. The risk factors that might affect the efficacy of treatment were studied retrospectively. Results : The single-administered group was 19 patients out of 29 (65.5%) and among the repeated-administered group, 5 patients (17.2%) had repeated indomethacin administration and the other 5 patients (17.2%) underwent surgery due to reopening of the duct after repeated medical treatment. In repeated-administered group, the diameter of PDA was significantly larger ($3.66{\pm}0.8mm$ vs $2.55{\pm}0.8mm$, P<0.01), especially when larger than 3.5 mm (sensitivity: 70%, specificity: 89%). Also, the mean postnatal age of the first indomethacin administration was significantly delayed in repeated-administered group (19.7 days vs 12.5 days, P<0.05). There were no significant differences in gestational age (32 wk 5 days vs 30 wk 8 days) and in birth weight (1598.9 g vs 1750.5 g). There were no significant differences in associated morbidities. Conclusion : In patients with larger diameter of PDA (>3.5 mm) and older postnatal age (>7 days), the effect of indomethacin was decreased. Therefore in such cases, repeated dose of indomethacin or surgical ligation should be considered earlier.

목 적 : 인도메타신 투여는 미숙아 동맥관개존의 치료로 약 80-90%에서 효과를 보이며 일부는 반복 투여나 수술적 치료를 필요로 한다. 본 연구는 인도메타신 치료 효과에 영향을 미칠 수 있는 요인들을 분석하여 치료 효과를 관찰함으로써 조기에 인도메타신 재 투여나 수술적 치료를 고려해야 할 경우를 예측하는데 도움이 되는 인자를 알아보고자 시행되었다. 방 법 : 2002년 9월부터 2006년 4월까지 경희 의료원과 노원 을지병원 신생아 중환자실에 입원한 미숙아 중 동맥관개존을 진단받고 일차적으로 인도메타신 주사를 투여 받은 환아 29명을 대상으로 하였다. 이중 1 cycle 투여로 치료된 경우를 단일 투여 군으로, 약물을 재 투여하였거나 재 투여 후 수술적 치료를 받은 경우를 재 투여 군으로 하였으며 인도메타신 치료 효과에 영향을 줄 수 있는 인자들에 관하여 후향적으로 비교, 조사하였다. 결 과 : 단일 투여 군은 전체 29명 중 19명(65.5%)였고 재 투여군 중 수술적 치료 없이 인도메타신의 재 투여로 치료된 환아는 29명 중 5명(17.2%), 재 투여 후 재발하여 수술 받은 환아는 29명 중 5명(17.2%)이였다. 재 투여 군에서는 동맥관개존의 크기가 유의하게 더 컸으며($3.66{\pm}0.8mm$ vs $2.55{\pm}0.8mm$, P<0.01), 또한 인도메타신의 첫 투여 시 평균 연령은 재 투여 군에서 통계적으로 유의하게 높았다(19.7일 vs 12.5일, P<0.05). 재태 연령과 출생 체중은 의미 있는 차이는 없었다. 그밖에 기관지 폐 이형성증, 괴사성 장염, 패혈증, 뇌실 내 출혈 등과 같은 예후에도 양군간의 의미 있는 차이가 없었다. 결 론 : 동맥관개존의 크기가 3.5 mm 이상인 경우, 인도메타신 투여시기가 생후 7일 이상으로 늦은 경우에 적극적인 인도메타신의 재 투여나 수술적 치료를 고려해야 할 것으로 생각되며 향후 보다 많은 환자 군을 대상으로 하는 연구가 필요할 것으로 생각된다.

Keywords

References

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