1
|
Mei JY, Hauspurg A, Corry-Saavedra K, Nguyen TA, Murphy A, Miller ES. Remote blood pressure management for postpartum hypertension: a cost-effectiveness analysis. Am J Obstet Gynecol MFM 2024; 6:101442. [PMID: 39074606 DOI: 10.1016/j.ajogmf.2024.101442] [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: 04/26/2024] [Revised: 07/15/2024] [Accepted: 07/20/2024] [Indexed: 07/31/2024]
Abstract
BACKGROUND Recognizing the importance of close follow-up after hypertensive disorders of pregnancy, many centers have initiated programs to support postpartum remote blood pressure management. OBJECTIVE This study aimed to evaluate the cost-effectiveness of remote blood pressure management to determine the scalability of these programmatic interventions. STUDY DESIGN This was a cost-effectiveness analysis of using remote blood pressure management vs usual care to manage postpartum hypertension. The modeled remote blood pressure management included provision of a home blood pressure monitor, guidance on warning symptoms, instructions on blood pressure self-monitoring twice daily, and clinical staff to manage population-level blood pressures as appropriate. Usual care was defined as guidance on warning symptoms and recommendations for 1 outpatient visit for blood pressure monitoring within a week after discharge. This study designed a Markov model that ran over fourteen 1-day cycles to reflect the initial 2 weeks after delivery when most emergency department visits and readmissions occur and remote blood pressure management is clinically anticipated to be most impactful. Parameter values for the base-case scenario were derived from both internal data and literature review. Quality-adjusted life-years were calculated over the first year after delivery and reflected the short-term morbidities associated with hypertensive disorders of pregnancy that, for most birthing people, resolve by 2 weeks after delivery. Sensitivity analyses were performed to assess the strength and validity of the model. The primary outcome was the incremental cost-effectiveness ratio, which was defined as the cost needed to gain 1 quality-adjusted life-year. The secondary outcome was incremental cost per readmission averted. Analyses were performed from a societal perspective. RESULTS In the base-case scenario, remote blood pressure management was the dominant strategy (ie, cost less, higher quality-adjusted life-years). In univariate sensitivity analyses, the most cost-effective strategy shifted to usual care when the cost of readmission fell below $2987.92 and the rate of reported severe range blood pressure with a response in remote blood pressure management was <1%. Assuming a willingness to pay of $100,000 per quality-adjusted life-year, using remote blood pressure management was cost-effective in 99.28% of simulations in a Monte Carlo analysis. Using readmissions averted as a secondary effectiveness outcome, the incremental cost per readmission averted was $145.00. CONCLUSION Remote blood pressure management for postpartum hypertension is cost saving and has better outcomes than usual care. Our data can be used to inform future dissemination of and support funding for remote blood pressure management programs.
Collapse
Affiliation(s)
- Jenny Y Mei
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of California, Los Angeles, Los Angeles, CA (Mei, Corry-Saavedra, Nguyen, and Murphy).
| | - Alisse Hauspurg
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Pittsburgh Medical Center Magee-Womens Hospital, Pittsburgh, PA (Hauspurg)
| | - Kate Corry-Saavedra
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of California, Los Angeles, Los Angeles, CA (Mei, Corry-Saavedra, Nguyen, and Murphy)
| | - Tina A Nguyen
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of California, Los Angeles, Los Angeles, CA (Mei, Corry-Saavedra, Nguyen, and Murphy)
| | - Aisling Murphy
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of California, Los Angeles, Los Angeles, CA (Mei, Corry-Saavedra, Nguyen, and Murphy)
| | - Emily S Miller
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Warren Alpert Medical School of Brown University and Women & Infants Hospital, Providence, RI (Miller)
| |
Collapse
|
2
|
Mei JY, Corry-Saavedra K, Nguyen TA, Murphy A. Standardized Clinical Assessment and Management Plan to Reduce Readmissions for Postpartum Hypertension. Obstet Gynecol 2023:00006250-990000000-00806. [PMID: 37411026 DOI: 10.1097/aog.0000000000005248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/20/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE To evaluate the effect of a postpartum hypertension standardized clinical assessment and management plan on postpartum readmissions and emergency department (ED) visits. METHODS We conducted a prospective cohort study of patients with postpartum hypertension (either chronic hypertension or hypertensive disorders of pregnancy) who delivered at a single tertiary care center for 6 months after enacting an institution-wide standardized clinical assessment and management plan (postintervention group). Patients in the postintervention group were compared with patients in a historical control group. The standardized clinical assessment and management plan included 1) initiation or uptitration of medication for any blood pressure (BP) higher than 150/100 mm Hg or any two BPs higher than 140/90 mm Hg within a 24-hour period, with the goal of achieving normotension (BP lower than 140/90 mm Hg) in the 12 hours before discharge; and 2) enrollment in a remote BP monitoring system on discharge. The primary outcome was postpartum readmission or ED visit for hypertension. Multivariable logistic regression was used to evaluate the association between standardized clinical assessment and management plan and the selected outcomes. A sensitivity analysis was performed with propensity score weighting. A planned subanalysis in the postintervention cohort identified risk factors associated with requiring antihypertensive uptitration after discharge. For all analyses, the level of statistical significance was set at P<.05. RESULTS Overall, 390 patients in the postintervention cohort were compared with 390 patients in a historical control group. Baseline demographics were similar between groups with the exception of lower prevalence of chronic hypertension in the postintervention cohort (23.1% vs 32.1%, P=.005). The primary outcome occurred in 2.8% of patients in the postintervention group and in 11.0% of patients in the historical control group (adjusted odds ratio [aOR] 0.24, 95% CI 0.12-0.49, P<.001). A matched propensity score analysis controlling for chronic hypertension similarly demonstrated a significant reduction in the incidence of the primary outcome. Of the 255 patients (65.4%) who were compliant with outpatient remote BP monitoring, 53 (20.8%) had medication adjustments made per protocol at a median of 6 days (interquartile range 5-8 days) from delivery. Non-Hispanic Black race (aOR 3.42, 95% CI 1.68-6.97), chronic hypertension (aOR 2.09, 95% CI 1.13-3.89), having private insurance (aOR 3.04, 95% CI 1.06-8.72), and discharge on antihypertensive medications (aOR 2.39, 95% CI 1.33-4.30) were associated with requiring outpatient adjustments. CONCLUSION A standardized clinical assessment and management plan significantly reduced postpartum readmissions and ED visits for patients with hypertension. Close outpatient follow-up to ensure appropriate medication titration after discharge may be especially important in groups at high risk for readmission.
Collapse
Affiliation(s)
- Jenny Y Mei
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | | | | | | |
Collapse
|
3
|
Avorgbedor F, McCoy TP, Gondwe KW, Xu H, Spielfogel E, Cortés YI, Vilme H, Lacey JVJ. Cardiovascular Disease-Related Emergency Department Visits and Hospitalization among Women with Hypertensive Disorders of Pregnancy. Am J Prev Med 2023; 64:686-694. [PMID: 36863895 PMCID: PMC11421440 DOI: 10.1016/j.amepre.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 03/04/2023]
Abstract
INTRODUCTION The risk of developing cardiovascular disease is higher for women who had hypertensive disorders of pregnancy than for women without a history of hypertensive disorders of pregnancy. However, it is unknown whether the emergency department visits and hospitalization differ between women with a history of hypertensive disorders of pregnancy and women without hypertensive disorders of pregnancy. The objective of this study was to characterize and compare cardiovascular disease-related emergency department visits, hospitalization rates, and diagnoses in women with a history of hypertensive disorders of pregnancy with those in women without. METHODS This study included participants from the California Teachers Study (N=58,718) with a history of pregnancy and data from 1995 through 2020. Incidence of cardiovascular disease-related emergency department visits and hospitalizations based on linkages with hospital records were modeled using multivariable negative binomial regression. Data were analyzed in 2022. RESULTS A total of 5% of the women had a history of hypertensive disorders of pregnancy (5.4%, 95% CI=5.2%, 5.6). A total of 31% of women had 1 or more cardiovascular disease-related emergency department visits (30.9%), and 30.1% had 1 or more hospitalizations. The incidence of cardiovascular disease-related emergency department visits (adjusted incident rate ratio=8.96, p<0.001) and hospitalizations (adjusted incident rate ratio=8.88, p<0.001) were significantly higher for women with hypertensive disorders of pregnancy than for those without, adjusting for other related characteristics of the women. CONCLUSIONS History of hypertensive disorders of pregnancy is associated with higher cardiovascular disease-related emergency department visits and hospitalizations. These findings underscore the potential burden on women and the healthcare system of managing complications associated with hypertensive disorders of pregnancy. Evaluating and managing cardiovascular disease risk factors in women with a history of hypertensive disorders of pregnancy is necessary to avoid cardiovascular disease-related emergency department visits and hospitalizations in this group.
Collapse
Affiliation(s)
- Forgive Avorgbedor
- School of Nursing, University of North Carolina Greensboro, Greensboro, North Carolina.
| | - Thomas P McCoy
- School of Nursing, University of North Carolina Greensboro, Greensboro, North Carolina
| | - Kaboni W Gondwe
- School of Nursing, University of Wisconsin Milwaukee, Milwaukee, Wisconsin
| | - Hanzhang Xu
- Duke Family Medicine & Community Health, Duke University Medical Center, Durham, North Carolina
| | | | - Yamnia I Cortés
- School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Helene Vilme
- Department of Population Health Sciences, Duke University Medical Center, Durham, North Carolina
| | | |
Collapse
|
4
|
Mitchell KA, Haddock AJ, Husainy H, Walter LA, Rajapreyar I, Wingate M, Smith CH, Tita A, Sinkey R. Care of the Postpartum Patient in the Emergency Department: A Systematic Review with Implications for Maternal Mortality. Am J Perinatol 2023; 40:489-507. [PMID: 34327686 PMCID: PMC10961102 DOI: 10.1055/s-0041-1732455] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Approximately one-third of maternal deaths occur postpartum. Little is known about the intersection between the postpartum period, emergency department (ED) use, and opportunities to reduce maternal mortality. The primary objectives of this systematic review are to explore the incidence of postpartum ED use, identify postpartum disease states that are evaluated in the ED, and summarize postpartum ED use by race/ethnicity and payor source. STUDY DESIGN We searched PubMed, Embase, Cumulative Index of Nursing and Allied Health Literature (CINAHL), ClinicalTrials.gov, Cochrane CENTRAL, Social Services Abstracts, and Scopus from inception to September 19, 2019. Each identified abstract was screened by two authors; the full-text manuscripts of all studies deemed to be potential candidates were then reviewed by the same two authors and included if they were full-text, peer-reviewed articles in the English language with primary patient data reporting care of a female in the ED in the postpartum period, defined as up to 1 year after the end of pregnancy. RESULTS A total of 620 were screened, 354 records were excluded and 266 full-text articles were reviewed. Of the 266 full-text articles, 178 were included in the systematic review; of these, 108 were case reports. Incidence of ED use by postpartum females varied from 4.8 to 12.2% in the general population. Infection was the most common reason for postpartum ED evaluation. Young females of minority race and those with public insurance were more likely than whites and those with private insurance to use the ED. CONCLUSION As many as 12% of postpartum women seek care in the ED. Young minority women of lower socioeconomic status are more likely to use the ED. Since approximately one-third of maternal deaths occur in the postpartum period, successful efforts to reduce maternal mortality must include ED stakeholders. This study is registered with the Systematic Review Registration (identifier: CRD42020151126). KEY POINTS · Up to 12% of postpartum women seek care in the ED.. · One-third of maternal deaths occur postpartum.. · Maternal mortality reduction efforts should include ED stakeholders..
Collapse
Affiliation(s)
- Kellie A. Mitchell
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama
- Center for Women’s Reproductive Health, Birmingham, Alabama
| | - Alison J. Haddock
- Department of Emergency Medicine, Baylor College of Medicine, Houston, Texas
| | | | - Lauren A. Walter
- Department of Emergency Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Indranee Rajapreyar
- Division of Cardiovascular Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Martha Wingate
- School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama
| | - Catherine H. Smith
- Division of Library Sciences, University of Alabama at Birmingham, Birmingham, Alabama
| | - Alan Tita
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama
- Center for Women’s Reproductive Health, Birmingham, Alabama
| | - Rachel Sinkey
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama
- Center for Women’s Reproductive Health, Birmingham, Alabama
| |
Collapse
|
5
|
Parker SE, Ajayi A, Yarrington CD. De Novo Postpartum Hypertension: Incidence and Risk Factors at a Safety-Net Hospital. Hypertension 2023; 80:279-287. [PMID: 36377603 DOI: 10.1161/hypertensionaha.122.19275] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Postpartum hypertension can be persistent, following a pregnancy complicated by hypertension, or new onset (de novo), following a normotensive pregnancy. The aim of this study is to estimate the incidence and identify risk factors for de novo postpartum hypertension (dn-PPHTN) among a diverse safety-net hospital population. METHODS We conducted a retrospective cohort study of 3925 deliveries from 2016 to 2018. All blood pressure (BP) measures during pregnancy through 12 months postpartum were extracted from medical records. Patients with chronic hypertension or hypertensive disorders of pregnancy were excluded. dn-PPHTN was defined as 2 separate BP readings with systolic BP ≥140 mm Hg and diastolic BP ≥90 mm Hg at least 48 hours after delivery. Severe dn-PPHTN was defined as systolic BP ≥160 and diastolic BP ≥110. We examined risk factors individually and in combination and timing of diagnosis. RESULTS Among the 2465 patients without a history of hypertension, 12.1% (n=298) developed dn-PPHTN; 17.1% of whom had severe dn-PPHTN (n=51). Compared to those without dn-PPHTN; cases were more likely to be ≥35 years, delivered via cesarean, or be current or former smokers. Patients with all of these characteristics had a 29% risk of developing dn-PPHTN, which was elevated among non-Hispanic Black patients (36%). Approximately 22% of cases were diagnosed after 6 weeks postpartum. CONCLUSIONS More than 1 in 10 patients with normotensive pregnancies experience dn-PPHTN in the year after delivery. Opportunities to monitor and manage patients at the highest risk of dn-PPHTN throughout the entire year postpartum could mitigate cardiovascular related maternal morbidity.
Collapse
Affiliation(s)
- Samantha E Parker
- Department of Epidemiology, Boston University School of Public Health, MA (S.E.P., A.A.)
| | - Ayodele Ajayi
- Department of Epidemiology, Boston University School of Public Health, MA (S.E.P., A.A.)
| | - Christina D Yarrington
- Department of Obstetrics and Gynecology, Boston University School of Medicine, MA (C.D.Y.)
| |
Collapse
|
6
|
Malhamé I, Dong S, Syeda A, Ashraf R, Zipursky J, Horn D, Daskalopoulou SS, D'Souza R. The use of loop diuretics in the context of hypertensive disorders of pregnancy: a systematic review and meta-analysis. J Hypertens 2023; 41:17-26. [PMID: 36453652 DOI: 10.1097/hjh.0000000000003310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
AIMS Addressing volume expansion may improve the management of hypertension across the pregnancy continuum. We conducted a systematic review to summarize the evidence on the use of loop diuretics in the context of hypertensive disorders during pregnancy and the postpartum period. METHODS AND RESULTS Medline, Embase, Cochrane library, ClinicalTrials.gov, and Google Scholar were searched for original research articles published up to 29 June 2021. Of the 2801 results screened, 15 studies were included: eight randomized controlled trials, six before-after studies, and one cohort study. Based on random effects meta-analysis of before-after studies, antepartum use of loop diuretics was associated with lower DBP [mean difference -17.73 mmHg, (95% confidence intervals -34.50 to -0.96); I2 = 94%] and lower cardiac output [mean difference -0.75 l/min, (-1.11 to -0.39); I2 = 0%], with no difference in SBP, mean arterial pressure, heart rate, or total peripheral resistance. Meta-analysis of randomized controlled trials revealed that postpartum use of loop diuretics was associated with decreased need for additional antihypertensive patients [relative risk 0.69, (0.50-0.97); I2 = 14%], and an increased duration of hospitalization [mean difference 8.80 h, (4.46-13.14); I2 = 83%], with no difference in the need for antihypertensive therapy at hospital discharge, or persistent postpartum hypertension. CONCLUSION Antepartum use of loop diuretics lowered DBP and cardiac output, while their postpartum use reduced the need for additional antihypertensive medications. There was insufficient evidence to suggest a clear benefit. Future studies focusing on women with hypertensive pregnancy disorders who may most likely benefit from loop diuretics are required.
Collapse
Affiliation(s)
- Isabelle Malhamé
- Department of Medicine, McGill University Health Centre
- Research Institute of the McGill University Health Centre, Montréal, Quebéc
| | - Susan Dong
- Faculty of Medicine, University of Toronto
| | - Ambreen Syeda
- Department of Obstetrics & Gynaecology, Mount Sinai Hospital, Toronto
| | - Rizwana Ashraf
- Department of Obstetrics & Gynaecology, Mount Sinai Hospital, Toronto
- Department of Obstetrics & Gynaecology, McMaster University, Hamilton
| | - Jonathan Zipursky
- Department of Medicine, Sunnybrook Health Sciences Centre, Toronto
- Institute of Health Policy, Management, and Evaluation, University of Toronto
| | - Daphne Horn
- Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Stella S Daskalopoulou
- Department of Medicine, McGill University Health Centre
- Research Institute of the McGill University Health Centre, Montréal, Quebéc
| | - Rohan D'Souza
- Department of Obstetrics & Gynaecology, Mount Sinai Hospital, Toronto
- Department of Obstetrics & Gynaecology, McMaster University, Hamilton
| |
Collapse
|
7
|
Smithson SD, Greene NH, Esakoff TF. Risk factors for re-presentation for postpartum hypertension in patients without a history of hypertension or preeclampsia. Am J Obstet Gynecol MFM 2020; 3:100297. [PMID: 33516136 DOI: 10.1016/j.ajogmf.2020.100297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Re-presentation for evaluation of hypertension following discharge after delivery is common. However, a subset of patients who re-present for evaluation of postpartum hypertension do not have a history of hypertension. Identification of those at risk may help guide postpartum management and prevent re-presentations to the hospital. OBJECTIVE This study aimed to establish risk factors for re-presentation for hypertension within 30 days of discharge after delivery in patients without a history of hypertension compared with women who did not re-present and to distinguish from risk factors for re-presentation for another reason. STUDY DESIGN Subjects were identified through data extraction from a single institution between January 2012 and December 2018. We included subjects without an International Classification of Diseases, Ninth Revision or International Classification of Diseases, Tenth Revision code for (1) chronic hypertension or (2) a hypertensive disorder of pregnancy during their delivery encounter who re-presented to the hospital within 30 days. Thus, the re-presentation group was divided into the following 2 groups: those who re-presented for hypertension and those who re-presented for any other reason. Each re-presentation group was compared with the cohort of patients who delivered within the study window and did not re-present using the Student t test or Wilcoxon tests for continuous variables and chi-square or Fisher's exact tests for categorical variables. Multivariable regression was also performed on all potentially important risk factors. RESULTS Factors that emerged as uniquely significant in the re-presentation group for hypertension were maternal age of ≥40 years and antenatal prescription of low-dose aspirin. Black race and body mass index of ≥30 kg/m2, although significant in both re-presentation groups, were more strongly predictive of re-presentation for hypertension. These factors remained independently significant when compared with each other in a multivariable analysis. CONCLUSION There are identifiable risk factors for postpartum re-presentation for hypertension in patients without a history of hypertension. Upon discharge, providers may consider close blood pressure monitoring and follow-up in patients who have any of the following risk factors: age of ≥40 years, black race, body mass index of ≥30 kg/m2, or those who were prescribed low-dose aspirin in pregnancy.
Collapse
Affiliation(s)
- Sarah D Smithson
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, CA.
| | - Naomi H Greene
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Tania F Esakoff
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, CA
| |
Collapse
|
8
|
Malhamé I, Danilack VA, Raker CA, Hardy EJ, Spalding H, Bouvier BA, Hurlburt H, Vrees R, Savitz DA, Mehta N. Cardiovascular severe maternal morbidity in pregnant and postpartum women: development and internal validation of risk prediction models. BJOG 2020; 128:922-932. [PMID: 32946639 DOI: 10.1111/1471-0528.16512] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To develop and internally validate risk prediction models identifying women at risk for cardiovascular severe maternal morbidity (CSMM). DESIGN A retrospective cohort study. SETTING An obstetric teaching hospital between 2007 and 2017. POPULATION A total of 89 681 delivery hospitalisations. METHODS We created and evaluated two models, one predicting CSMM at delivery (delivery model) and the other predicting CSMM postpartum following discharge from delivery hospitalisation (postpartum CSMM). We assessed model discrimination and calibration and used bootstrapping for internal validation. MAIN OUTCOME MEASURES Cardiovascular severe maternal morbidity comprised the following confirmed conditions: pulmonary oedema/acute heart failure, myocardial infarction, aneurysm, cardiac arrest/ventricular fibrillation, heart failure/arrest during surgery or procedure, cerebrovascular disorders, cardiogenic shock, conversion of cardiac rhythm and difficult-to-control severe hypertension. RESULTS The delivery model contained 11 variables and 3 interaction terms. The strongest predictors were gestational hypertension, chronic hypertension, multiple gestation, cardiac lesions or valvular heart disease, maternal age ≥40 years and history of poor pregnancy outcome. The postpartum model comprised eight variables. The strongest predictors were severe pre-eclampsia, non-Hispanic Black race/ethnicity, chronic hypertension, gestational hypertension, non-severe pre-eclampsia and maternal age ≥40 years at delivery. The delivery and postpartum models had an area under the receiver operating characteristic curve of 0.87 (95% CI 0.85-0.89) and 0.85 (95% CI 0.80-0.90), respectively. Both models were adequately calibrated and performed well on internal validation. CONCLUSIONS These tools may help providers to identify women at highest risk of CSMM and enable future prevention measures. TWEETABLE ABSTRACT Risk assessment tools for cardiovascular severe maternal morbidity were developed and internally validated.
Collapse
Affiliation(s)
- I Malhamé
- Department of Medicine, McGill University Health Centre, McGill University, Montreal, Quebec, Canada.,Department of Medicine, Women and Infants Hospital, Warren Alpert School of Brown University, Providence, RI, USA
| | - V A Danilack
- Department of Obstetrics and Gynecology, Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA.,Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA
| | - C A Raker
- Department of Obstetrics and Gynecology, Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - E J Hardy
- Department of Medicine, Women and Infants Hospital, Warren Alpert School of Brown University, Providence, RI, USA.,Department of Obstetrics and Gynecology, Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - H Spalding
- Department of Medicine, Women and Infants Hospital, Warren Alpert School of Brown University, Providence, RI, USA
| | - B A Bouvier
- Department of Medicine, Women and Infants Hospital, Warren Alpert School of Brown University, Providence, RI, USA
| | - H Hurlburt
- Department of Medicine, Brigham and Women's Cardiovascular Associates of Care New England, Harvard Medical School, Boston, MA, USA
| | - R Vrees
- Department of Obstetrics and Gynecology, Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - D A Savitz
- Department of Obstetrics and Gynecology, Women & Infants Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA.,Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA
| | - N Mehta
- Department of Medicine, Women and Infants Hospital, Warren Alpert School of Brown University, Providence, RI, USA.,Department of Medicine, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| |
Collapse
|