Abstract：Objective To investigate the predictive value of composite index alveolar arterial oxygen difference（A-aDO2）,arterial alveolar oxygen partial pressure ratio（a/A）ratio and oxygenation index（PaO2/FiO2）in predicting respiratory distress with respiratory failure in late preterm infants value research.Methods According to the simple random number table method,80 cases of late preterm infants with respiratory distress syndrome were selected,40 cases did not require mechanical ventilation as the control group,and 40 cases required mechanical ventilation as the observation group.To analyze the prediction of respiratory failure parameters on the need for mechanical ventilation in late preterm infants with respiratory distress,the composite index A-aDO2,the difference between a/A ratio and PaO2/FiO2,the sensitivity,specificity,positive predictive value,negative predictive value,Positive rate,negative rate,Youden index and make ROC curve.Results There were no differences in the AUC curves of the maximum A-aDO2,the minimum a/A ratio,and the minimum PaO2/FiO2 between the two groups（P>0.05）.The three AUC curves were higher than that of PaCO2,and the A-aDO2 curve exceeded the maximum FiO2 curve（P<0.05）.A-aDO2>200 mmHg was proved to be the most effective index for predicting respiratory failure,and all children in the observation group reached the standard of A-aDO2>200 mmHg.Conclusion The composite index A-aDO2,a/A ratio and PaO2/FiO2 can reasonably predict respiratory distress with respiratory failure in late preterm infants,and the prediction effect is obvious,which has a certain research value.
吕芮. 复合指数A-aDO2、a/A比值与PaO2/FiO2预测晚期早产儿呼吸窘迫伴呼吸衰竭的价值研究[J]. 哈尔滨医药, 2023, 43(3): 41-42.
Lv Rui. The Value of Composite Index A-aDO2,a/A Ratio and PaO2 /FiO2 in Predicting Respiratory Distress with Respiratory Failure in Late Preterm Infants. journal1, 2023, 43(3): 41-42.
2023, Vol. 43 
