Predicting peripartum blood transfusion: Focusing on pre-pregnancy characteristics

Yung Taek Ouh, Kyu Min Lee, Ki Hoon Ahn, Soon Cheol Hong, Min Jeong Oh, Hai Joong Kim, Sung Won Han, Geum Joon Cho

Research output: Contribution to journalArticle


Background: Obstetric hemorrhage is one of the most common causes of obstetrical morbidity and mortality, and transfusion is the most important management for hemorrhage. The aim of our study was to investigate the pre-pregnancy and pregnancy risk factors for peripartum transfusion. Methods: Women who delivered a baby from 2010 to 2014 in Korea and participated in the Korean National Health Screening Program for Infants and Children were included. To analyze pre-pregnant risk factors for peripartum transfusion, an additional analysis was done for women who underwent a National Health Screening Examination within 1 year before pregnancy, including maternal waist circumference, body mass index, blood pressure, laboratory tests and history of smoking. Multivariable logistic regression analysis was used to estimate the risk factors for peripartum transfusion. Results: Of the total 1,980,126 women who met the inclusion criteria, 36,868 (1.86%) were transfused at peripartum. In a multivariable regression model, the pregnancy risk factors for peripartum transfusion included maternal age above 35 years [odds ratio (OR): 1.41; 95% confidence interval (CI): 1.32-1.50], preterm birth (OR: 2.39; 95% CI: 2.15-2.65), and maternal hypertension (OR: 2.49; 95% CI: 2.24-2.77). Pre-pregnancy risk factors including fasting glucose level of more than 126 mg/dL (OR: 1.11; 95% CI: 1.02-1.20), current-smoker status (OR: 1.20; 95% CI: 1.06-1.37), and waist-circumference less than 80 cm (OR: 1.18; 95% CI: 1.06-1.30) were independently associated with peripartum blood transfusion. Conclusions: Several pre-pregnancy and pregnancy risk factors were associated with peripartum blood transfusion. Some identified factors are modifiable before conception, and our study validated peripartum blood transfusion as a form of triage.

Original languageEnglish
Article number477
JournalBMC Pregnancy and Childbirth
Issue number1
Publication statusPublished - 2019 Dec 5



  • Blood transfusion
  • Peripartum
  • Postpartum hemorrhage

ASJC Scopus subject areas

  • Obstetrics and Gynaecology

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