HEART RATE, ILLNESS SEVERITY, GESTATIONAL AGE

这项回顾性研究的目的是确定患者是否 出生体重（BW）和胎龄（GA）的特征或 心率（HR）的生理特征、长期变异性 （LT-HRV）或疾病严重程度评分独立预测死亡率 早产儿接受开胸手术，而在 重症监护室（ICN）。 研究的第二个目的是 定义这些因素对解释的相对贡献 接受开胸手术的早产儿的死亡风险。 现状：数据收集工作已完成。 研究完成。

The purpose of this retrospective study is to determine if the patient characteristics of birth weight (BW) and gestational age (GA) or the physiological characteristics of heart rate (HR), long term variability (LT-HRV) or severity of illness scores independently predict mortality in premature neonates who underwent thoracotomy surgery while in the intensive care nursery (ICN). A secondary purpose of the study is to define the relative contribution of these factors to the explanation of mortality risk in premature neonates who underwent thoracotomy surgery. Status: Data collection finalized. Study completed.