نبذة مختصرة : BackgroundPregnant women with a substance-related diagnosis, such as an alcohol use disorder, are a vulnerable population that may experience higher rates of severe maternal morbidity, such as hemorrhage and eclampsia, than pregnant women with no substance-related diagnosis.MethodsThis retrospective cross-sectional study reviewed electronic health record data on women (aged 18-44years) who delivered a single live birth or stillbirth at ≥ 20weeks of gestation from March 1, 2016, to August 30, 2019. Women with and without a substance-related diagnosis were matched on key demographic characteristics, such as age, at a 1:1 ratio. Adjusting for these covariates, odds ratios and 95% confidence intervals were calculated.ResultsA total of 10,125 deliveries met the eligibility criteria for this study. In the matched cohort of 1,346 deliveries, 673 (50.0%) had a substance-related diagnosis, and 94 (7.0%) had severe maternal morbidity. The most common indicators in women with a substance-related diagnosis included hysterectomy (17.7%), eclampsia (15.8%), air and thrombotic embolism (11.1%), and conversion of cardiac rhythm (11.1%). Having a substance-related diagnosis was associated with severe maternal morbidity (adjusted odds ratio=1.81 [95% CI, 1.14-2.88], p-value=0.0126). In the independent matched cohorts by substance type, an alcohol-related diagnosis was significantly associated with severe maternal morbidity (adjusted odds ratio=3.07 [95% CI, 1.58-5.95], p-value=0.0009), while the patterns for stimulant- and nicotine-related diagnoses were not as well resolved with severe maternal morbidity and opioid- and cannabis-related diagnoses were not associated with severe maternal morbidity.ConclusionWe found that an alcohol-related diagnosis, although lowest in prevalence of the substance-related diagnoses, had the highest odds of severe maternal morbidity of any substance-related diagnosis assessed in this study. These findings reinforce the need to identify alcohol-related diagnoses in pregnant women early to minimize potential harm through intervention and treatment.
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