Risk of postpartum hemorrhage among Native American women. 2015

Salam E Chalouhi, and Jodi Tarutis, and Guilherme Barros, and Robert M Starke, and Ellen L Mozurkewich
Department of Obstetrics and Gynecology, Rehoboth McKinley Christian Hospital, Gallup, NM, USA. Electronic address: salamchalouhy@gmail.com.

OBJECTIVE To assess whether Native American women have an increased risk of postpartum hemorrhage (PPH) after vaginal delivery. METHODS In a retrospective study, medical charts were reviewed for patients who delivered vaginally at Rehoboth McKinley Hospital in Gallup, NM, USA, between June 1, 2009, and June 30, 2012. Ethnic origin had been determined by self-report. PPH was defined as a visually estimated blood loss of more than 500 mL. Multivariable logistic analysis was undertaken to identify factors independently associated with PPH. RESULTS Among 1062 eligible patients, 751 (70.7%) were Native American and 311 (29.3%) were non-native (white, African American, or Hispanic). A significantly higher proportion of Native Americans than non-native women developed PPH (87 [11.6%] vs 22 [7.0%]; P=0.02). In multivariable analysis, Native American ethnic origin was an independent predictor of PPH (odds ratio 1.8, 95% confidence interval 1.1-3.0; P=0.02). In a comparison with white women only, PPH was significantly more frequent among Native American women (87/751 [11.6%] vs 13/194 [6.7%]; P=0.01). CONCLUSIONS Native American women have a higher risk of PPH after vaginal delivery than do non-native women.

UI MeSH Term Description Entries
D007198 Indians, North American Members of indigenous North American populations with pre-colonial contact origins. Amerinds, North American,Indigenous North Americans,American Indian, North,American, Indigenous North,Amerind, North American,Indian, North American,Indigenous North American,North American Amerind,North American Amerinds,North American Indian,North American Indians,North American, Indigenous
D009516 New Mexico State bounded on the north by Colorado, on the east by Oklahoma and Texas, on the south by Texas and Mexico, and on the west by Arizona.
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D005260 Female Females
D006473 Postpartum Hemorrhage Excess blood loss from uterine bleeding associated with OBSTETRIC LABOR or CHILDBIRTH. It is defined as blood loss greater than 500 ml or of the amount that adversely affects the maternal physiology, such as BLOOD PRESSURE and HEMATOCRIT. Postpartum hemorrhage is divided into two categories, immediate (within first 24 hours after birth) or delayed (after 24 hours postpartum). Hemorrhage, Postpartum,Delayed Postpartum Hemorrhage,Immediate Postpartum Hemorrhage,Hemorrhage, Delayed Postpartum,Hemorrhage, Immediate Postpartum,Postpartum Hemorrhage, Delayed,Postpartum Hemorrhage, Immediate
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative

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