Journal
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH
Volume 34, Issue 6, Pages 986-993Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1447-0756.2008.00804.x
Keywords
gestational hypertension; high altitude; low birthweight; postpartum hemorrhage; pre-eclampsia; small for gestational age; Tibet
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Funding
- National Institute for Child Health and Human Development (NICHD) [U01-HD40613]
- Bill and Melinda Gates Foundation
- Mentzikhang Traditional Tibetan Medicine and Astrology Hospital
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Aim: To compare maternal and neonatal outcomes of Tibetan and Han Chinese women delivering vaginally at high altitude (3650 meters) in Lhasa, Tibet Autonomous Region, People's Republic of China. Method: Comparative analysis of data from a prospective observational study of Tibetan (n = 938) and Han Chinese (n = 146) women delivering at three hospitals between January 2004 and May 2005. Results: Han Chinese women had higher rates of pre-eclampsia/gestational hypertension than Tibetan women, (10.3% vs 5.9%, P = 0.04). There was no difference in rates of postpartum hemorrhage between Tibetan and Han women (12.8% vs 17.1%, P = 0.15). Han newborns weighed significantly less than Tibetan newborns (P < 0.01), and were twice as likely to be small for gestational age, (24.5% vs 11.6%, P < 0.01). Tibetan newborns were less likely to have poor neonatal outcomes than Han newborns (P < 0.01). Conclusion: In high altitude deliveries in Tibet, adverse outcomes were significantly more common among Han Chinese.
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