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박국인 ( Kook In Park ),남궁란 ( Ran Namgung ),이철 ( Chul Lee ),한동관 ( Dong Gwan Han ) 대한주산의학회 1990 Perinatology Vol.1 No.1
We conducted a retrospective study of early prediction of death based on arterial blood gas study and ventilatory indices in newborn infants with severe respiratory failure underwent conventional mechanical ventilation. Of 41 babies with severe respiratory failure admitted to a neonatal intensive care unit of Yonsei University Medical Center from Jan. 1986 to June 1989,7(17%) ultimately died. Thirty two of the 41 infants had hyaline membrane disease, 13 had pneumonia & / or sepsis, 13 had severe asphyxia, 4 had perisitent pulmonary hypertension, and 4 had meconium aspiration syndrome. There was a significant association between adverse outcome and severity of respirea-tory failure; patients with a single a/A PO2 ≤ 0.03 had mortality of 100%(4 of 4), those with a single OI≥ 60 had mortality 80%(4 of 5), those with a single PaO2 ≤ l8mmHg had mortality 100%(4 of 4), and those with a single Aa DO2 > 645mmHg had mortality 100%(6 of 6). An Aa DO2 criterion of greater than or equal to 640mmHg for 4 hours producecd a mortality of l00%(6 of 6) and an PaO2 < 50mmHg for a 28 hours interval was associated with a 83% mortality(5 of 6). Based on this study, we recommend that each NICU study its various patient groups to determine what quantitative indices, if any, allow reliable prediction of outcome and which specific index values allow discrimination between favorable and unfavorable outcomes. A predictive set of indices, once validated for a particular NICU, can then be used to indentify those infants who are likely to have an unfavorable outcome. Treatment options for those infants, whether conventional or experimental, can then be critically appraised.