Characteristics of Preterm Labor at Sanglah General Hospital Denpasar from January 1st, 2017- December 31st, 2018

The incidence rate for preterm labor ranged from 6-10 % of all pregnancies, and 75 % of them was the highest cause for perinatal mortality and morbidity worldwide. Based on the medical records in 2015, 285 out of 1198 labor were preterm in nature (23.7 %). This study aimed to observe the characteristics of preterm labor in Obstetric and Gynecologic Emergency Room from January 1st, 2017 until December 31st, 2018. This descriptive, retrospective study used secondary data based on the medical records of all patients presenting with preterm labor from January 1st, 2017 until December 31st, 2018. During two years of observation, there were 555 (29.5 %) preterm labors out of 1.880 total labors. Preterm labor occurred most commonly on mothers of 20-35 years old (70.1 %), gestational age of 32 until less than37 weeks (moderate preterm) as many as 70.3 %, and normal BMI (91.7 %). Most cases were spontaneous vaginal delivery (51.9 %), primigravida (44.3 %), and no prior history of preterm labor (89.7 %). The most common comorbidity identified was gestational hypertension (24.9 %). Most infants were born in category of 1500 to less than2500 g (72.7 %), vigorous baby (52.6 %), and were admitted to NICU (58.2 %).