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Bitar G, Sibai BM, Chen HY, Neff N, Blackwell S, Chauhan SP, Bartal MF. Pregnancy-Associated Stroke and Outcomes Related to Timing and Hypertensive Disorders. Obstet Gynecol 2023:00006250-990000000-00811. [PMID: 37411017 DOI: 10.1097/aog.0000000000005249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/04/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE To estimate temporal trends of stroke in the peripartum period and to assess the relationship between stroke and maternal adverse outcomes vis-à-vis timing and hypertension. METHODS We conducted a retrospective, cross-sectional study using the National Inpatient Sample to identify hospitalizations with pregnancy-associated stroke in the United States (2016-2019). Temporal trends in pregnancy-associated stroke were examined according to timing of stroke (antepartum vs postpartum) and both prepregnancy and pregnancy hypertensive disorders (yes vs no). Multivariable Poisson regression models with robust error variance were used to examine the association among maternal adverse outcomes, timing of stroke, and hypertensive disorders. RESULTS Among 15,977,644 pregnancy hospitalizations, 6,100 hospitalizations (38.2/100,000 hospitalizations) were with pregnancy-associated stroke. Of these, 3,635 (59.6%) had antepartum pregnancy-associated stroke and 2,465 (40.4%) had postpartum pregnancy-associated stroke; alternatively, 2,640 (43.3%) had hypertensive disorders, and 3,460 (56.7%) were without hypertensive disorders. From 2016 to 2019, the overall rate of pregnancy-associated stroke (37.5 to 40.8/100,000 pregnancy hospitalizations, P=.028), rate of postpartum pregnancy-associated stroke (14.6 to 17.6/100,000 pregnancy hospitalizations, P=.005), and rate of pregnancy-associated stroke with hypertensive disorders (14.9 to 17.2/100,000 pregnancy hospitalizations, P=.013) increased. Antepartum pregnancy-associated stroke and pregnancy-associated stroke without hypertensive disorders, however, remained stable. Despite higher risk of maternal morbidity in postpartum stroke hospitalizations, including mechanical ventilation and pneumonia, there was no significant difference in in-hospital mortality between antepartum and postpartum stroke. Similarly, between pregnancy-associated stroke with hypertensive disorders and stroke without hypertensive disorders, an increased risk of mechanical ventilation, seizure, and prolonged hospital stay was seen for stroke with hypertensive disorders without an increase in mortality. CONCLUSION A nationally representative sample of hospitalizations in the United States indicates an increasing trend in the rate of postpartum stroke. Almost half of hospitalizations with pregnancy-associated stroke have concomitant hypertensive disorders. Risk of adverse outcomes, but not mortality, is elevated in patients with stroke occurring in the postpartum period and stroke associated with hypertensive disorders.
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Affiliation(s)
- Ghamar Bitar
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas; and the Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Sackler School of Medicine, Tel Aviv University, Israel
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Yu AYX, Nerenberg KA, Diong C, Fang J, Chu A, Kapral MK, Edwards JD, Dancey SR, Austin PC, Auger N. Maternal Health Outcomes After Pregnancy-Associated Stroke: A Population-Based Study With 19 Years of Follow-Up. Stroke 2023; 54:337-344. [PMID: 36689587 DOI: 10.1161/strokeaha.122.041471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/07/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND Pregnancy-associated stroke carries high short-term morbidity and mortality, but data on subsequent maternal outcomes are limited. We evaluated long-term maternal health outcomes after pregnancy-associated stroke. METHODS In this retrospective cohort study, we used administrative data to identify pregnant adults aged ≤49 years with stroke between 2002-2020 in Ontario, Canada and 2 comparison groups: (1) non-pregnant female patients with stroke and (2) pregnant patients without stroke. Patients who survived the index admission were followed until 2021. After propensity score matching, we used Cox regression with a robust variance estimator to compare pregnant patients with stroke and the 2 comparison groups for the composite outcome of death and all-cause non-pregnancy readmission. Where proportional hazard assumption was not met, we reported time-varying hazard ratios (HR) with 95% CIs by modeling the log-hazard ratio as a function of time using restricted cubic splines. RESULTS We identified 217 pregnant patients with stroke, 7604 non-pregnant patients with stroke, and 1 496 256 pregnant patients without stroke. Of the 202 pregnant patients with stroke who survived the index stroke admission, 41.6% (6.8 per 100 person-years) subsequently died or were readmitted during follow-up. Median follow-up times were 5 years (pregnancy-associated stroke), 3 years (non-pregnant stroke), and 8 years (pregnant without stroke). Pregnant patients with stroke had a lower hazard of death and all-cause readmission compared with non-pregnant patients with stroke at 1-year follow-up (HR, 0.64 [95% CI, 0.44-0.94]), but this association did not persist during longer-term follow-up. Conversely, pregnant patients with stroke had higher hazard of death and readmission compared with pregnant patients without stroke at 1-year follow-up (HR, 5.70 [95% CI, 3.04-10.66]), and this association persisted for a decade. CONCLUSIONS Stroke during pregnancy is associated with long-term health consequences. It is essential to transition care postpartum to primary or specialty care to optimize vascular health.
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Affiliation(s)
- Amy Y X Yu
- Department of Medicine (Neurology), University of Toronto, Sunnybrook Health Sciences Centre, Ontario, Canada (A.Y.X.Y.)
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
| | - Kara A Nerenberg
- Departments of Medicine and Obstetrics and Gynecology, University of Calgary, Alberta, Canada (K.A.N.)
| | - Christina Diong
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
| | - Jiming Fang
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
| | - Anna Chu
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
| | - Moira K Kapral
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
- Department of Medicine (General Internal Medicine), University of Toronto-University Health Network, Ontario, Canada (M.K.K.)
| | - Jodi D Edwards
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
- University of Ottawa Heart Institute, Ontario, Canada (J.D.E., S.R.D.)
| | - Sonia R Dancey
- University of Ottawa Heart Institute, Ontario, Canada (J.D.E., S.R.D.)
- School of Epidemiology and Public Heath, University of Ottawa, Ontario, Canada (J.D.E.)
| | - Peter C Austin
- ICES, Toronto, Ontario, Canada (A.Y.X.Y., C.D., J.F., A.C., M.K.K., J.D.E., P.C.A.)
| | - Nathalie Auger
- Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Quebec, Canada (N.A.)
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Karjalainen L, Tikkanen M, Rantanen K, Aarnio K, Korhonen A, Saaros A, Laivuori H, Gissler M, Ijäs P. Stroke in Pregnancy and Puerperium: Validated Incidence Trends With Risk Factor Analysis in Finland 1987-2016. Neurology 2021; 96:e2564-e2575. [PMID: 33827961 DOI: 10.1212/wnl.0000000000011990] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 02/26/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate whether previously reported increasing incidence of pregnancy-associated stroke (PAS) is observed in chart-validated register data in Finland. In an exploratory analysis, we studied risk factors for PAS. METHODS We performed a retrospective population-based cohort study and nested case-control study in Finland from 1987 to 2016. The Medical Birth Register (MBR) was linked to the Hospital Discharge Register to identify women with incident stroke (ischemic stroke, cerebral venous thrombosis, intracerebral or subarachnoid hemorrhage) during pregnancy or puerperium. Cases were verified from patient records. Incidence of PAS over the study period in 5-year age groups and pregnancy/postpartum period was calculated per number of deliveries. Three matched controls were selected for each case from MBR to compare risk factors. RESULTS After chart review, 29.6% (257 of 868) of cases were PAS. The incidence of PAS was 14.5 (95% confidence interval [CI] 12.8-16.3) per 100,000 deliveries. Incidence increased from 11.1 to 25.2 per 100,000 deliveries from 1987 to 1991 to 2012 to 2016 (p < 0.0001). Incidence increased by age from 9.8 to 29.9 per 100,000 deliveries from 20 to 24 years to >40 years of age (p < 0.0001). During the early postpartum period, incidence was 5-fold greater compared to the first trimester. Maternal mortality was 6.6%. In the multivariable-adjusted model, smoking beyond 12 gestational weeks (odds ratio [OR] 1.8, 95% CI 1.2-2.7), migraine (OR 16.3, 95% CI 5.3-49.8), and hypertensive disorders of pregnancy (OR 4.0, 95% CI 2.5-6.3) were the most important risk factors for PAS. CONCLUSION PAS incidence is increasing, stressing the importance of careful pregnancy surveillance and risk factor management, particularly in older expectant mothers and extending to puerperium. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that smoking beyond 12 gestational weeks, migraine, and hypertensive disorders of pregnancy are associated with an increased risk of PAS.
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Affiliation(s)
- Liisa Karjalainen
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden.
| | - Minna Tikkanen
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Kirsi Rantanen
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Karoliina Aarnio
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Aino Korhonen
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Anna Saaros
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Hannele Laivuori
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Mika Gissler
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
| | - Petra Ijäs
- From Neurology (L.K., K.R., K.A., A.K., A.S., P.I.), Obstetrics and Gynecology (M.T.), and Medical and Clinical Genetics (H.L.), University of Helsinki and Helsinki University Hospital; Obstetrics and Gynecology (L.K.), University of Helsinki and Hyvinkää Hospital, Helsinki University Hospital, Hyvinkää/Helsinki; Institute for Molecular Medicine Finland (H.L.), Helsinki Institute of Life Science, University of Helsinki; Department of Obstetrics and Gynecology (H.L.), Tampere University Hospital; Faculty of Medicine and Health Technology (H.L.), Tampere University; Department of Information Services (M.G.), Finnish Institute for Health and Welfare, Helsinki, Finland; and Department of Neurobiology (M.G.), Care Sciences and Society, Karolinska Institute, Stockholm, Sweden
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