Analysis of gastric fluid in preterm newborns supports the view that the amniotic cavity is sterile before the onset of parturition: a retrospective cohort study

Autor: Kyong-No Lee, Hyun Ji Choi, Ha Lim Shin, Yu Mi Shin, Eun Ji Oh, Hyunsu Kim, Hyeon Ji Kim, Jee Yoon Park, Young Hwa Jung, Kyung Joon Oh, Chang Won Choi
Rok vydání: 2023
Popis: Objective To compare the frequency of Ureaplasma-positive gastric fluid (GF) cultures based on the cause and mode of delivery in preterm newborns. Design Retrospective cohort study. Setting A single university hospital in South Korea. Population Women with a singleton pregnancy who delivered prematurely (between 23+0 and 32+0 weeks of gestation, N=464). Methods The newborns’ GF was obtained on the day of birth via nasogastric intubation. The frequency of Ureaplasma-positive GF cultures was compared according to the cause and mode of delivery. Main outcome measures Ureaplasma spp.-positivity in GF cultures. Results Ureaplasma spp. was detected in 20.3% of the GF samples. The presence of Ureaplasma spp. was significantly higher in the spontaneous preterm birth group than in the indicated preterm birth group (30.2% vs 3.0%; P < 0.001). Additionally, Ureaplama spp. was more frequently found in the vaginal delivery group than in the cesarean delivery group, irrespective of the cause of preterm delivery [indicated preterm birth group (22.2% vs. 1.9%, P = 0.023); spontaneous preterm birth group (37.7% vs. 24.2%, P = 0.015)]. Conclusions Ureaplasma spp. were found in 20.3% of the GFs. However, only 1.9% of newborns in the indicated preterm birth group with cesarean delivery had a Ureaplasma-positive GF culture. Our findings support the view that the amniotic cavity is a sterile environment before the onset of parturition. Funding Ministry of Health & Welfare and Ministry of Science and ICT, Republic of Korea (Grant No. HI22C1859) and the Seoul National University Bundang Hospital Research Fund (Grant No. 14-2021-0025).
Databáze: OpenAIRE