Many controversies have arisen regarding the choice between expectant management and immediate delivery when PROM occurs during the late preterm (between 34 and 37 weeks of gestation). More importantly, no study has been conducted on this subject in Korea. 

In this regard, this study aimed to provide evidence regarding the perinatal outcomes from expectant management and from immediate delivery in patients who presented with PROM during the late preterm. This study involved a systematic review of the literature regarding the perinatal outcomes of the two approaches, analysis of patient data, and a questionnaire survey for obstetricians to identify the status of medical treatment in Korea.