Papers

Submitted
Submitted.
2018
Molina RL, Gombolay M, Jonas J, Modest AM, Shah J, Golen TH, Shah NT. Association Between Labor and Delivery Unit Census and Delays in Patient Management: Findings From a Computer Simulation Module. Obstet Gynecol. 2018;131 (3) :545-552.Abstract
OBJECTIVE: To demonstrate the association between increases in labor and delivery unit census and delays in patient care decisions using a computer simulation module. METHODS: This was an observational cohort study of labor and delivery unit nurse managers. We developed a computer module that simulates the physical layout and clinical activity of the labor and delivery unit at our tertiary care academic medical center, in which players act as clinical managers in dynamically allocating nursing staff and beds as patients arrive, progress in labor, and undergo procedures. We exposed nurse managers to variation in patient census and measured the delays in resource decisions over the course of a simulated shift. We used mixed logistic and linear regression models to analyze the associations between patient census and delays in patient care. RESULTS: Thirteen nurse managers participated in the study and completed 17 12-hour shifts, or 204 simulated hours of decision-making. All participants reported the simulation module reflected their real-life experiences at least somewhat well. We observed 1.47-increased odds (95% CI 1.18-1.82) of recommending a patient ambulate in early labor for every additional patient on the labor and delivery unit. For every additional patient on the labor and delivery unit, there was a 15.9-minute delay between delivery and transfer to the postpartum unit (95% CI 2.4-29.3). For every additional patient in the waiting room, we observed a 33.3-minute delay in the time patients spent in the waiting room (95% CI 23.2-43.5) and a 14.3-minute delay in moving a patient in need of a cesarean delivery to the operating room (95% CI 2.8-25.8). CONCLUSION: Increasing labor and delivery unit census is associated with patient care delays in a computer simulation. Computer simulation is a feasible and valid method of demonstrating the sensitivity of care decisions to shifts in patient volume.
Nijagal MA, Shah NT, Levin-Scherz J. Both patients and maternity care providers can benefit from payment reform: four steps to prepare. Am J Obstet Gynecol. 2018.Abstract
Many Medicaid programs and private health plans are implementing new models of maternity care reimbursement, and clinicians face mounting pressure to demonstrate high-quality care at a lower cost. Clinicians will be better prepared to meet these challenges with a fuller understanding of new payment models and the opportunities they present. We describe the structure of maternity care episode payments and recommend 4 ways that clinicians can prepare for success as value-based payment models are implemented: identify opportunities to improve outcomes and experience, measure quality, reduce waste, and work in teams across settings.
Plough A, Henrich N, Galvin G, Shah NT. Common challenges managing bed and staff availability on labor and delivery units in the United States: A qualitative analysis. Birth. 2018.Abstract
BACKGROUND: Managers of labor and delivery units need to ensure that their limited supply of beds and nursing staff are adequately available, despite uncertainty with respect to patient needs. The ability to address this challenge has been associated with patient outcomes; however, best practices have not been defined. METHODS: We conducted a secondary analysis of 96 interviews with nurse and physician managers from 48 labor and delivery units across the United States. Included units represented a diverse range of characteristics, but skewed toward higher volume teaching hospitals. The prior study scored management practice based on their proactiveness (ability to mitigate challenges before they occur). Based on emerging themes, we identified common challenges in managing bed and staff availability and performed an analysis of positive deviants to identify an additional criterion for effective management performance. RESULTS: We identified four key challenges common to all labor and delivery units, (1) scheduling planned cases, (2) tracking patient flow, (3) monitoring bed and staff availability in the moment, and (4) adjusting bed and staff availability in the moment. We also identified "systematicness" (ability to address challenges in a consistent and reliable manner) as an emerging criterion for effective management. We observed that being proactive and systematic represented distinct characteristics, and units with both proactive and systematic practices appeared best positioned to effectively manage limited beds and staffing. DISCUSSION: Labor and delivery unit managers should distinctly assess both the proactiveness and systematicness of their existing management practices and consider how their practices could be modified to improve care.
Shah NT. Eroding Access and Quality of Childbirth Care in Rural US Counties. JAMA. 2018.
Chee M, Zhang JX, Ngooi S, Moriates C, Shah N, Arora VM. Generic Substitution Rates of Oral Contraceptives and Associated Out-of-Pocket Cost Savings Between January 2010 and December 2014. JAMA Intern Med. 2018.
Edmonds JK, O'Hara M, Clarke SP, Shah NT. In Response. J Obstet Gynecol Neonatal Nurs. 2018;47 (2) :234-235.
2017
Shah N. Look, then Leap: Quality and Improving Maternity Care. BJOG. 2017.Abstract
Obstetricians learned this lesson the hard way. A century ago, very little in obstetric practice was codified. Care was artisanal, variable, and sometimes dangerous. Based on a theory that childbirth is inherently "pathogenic," prominent American obstetricians recommended sweeping reforms. (DeLee, JB, Principles and Practice of Obstetrics, 1913, first edition). This article is protected by copyright. All rights reserved.
Lindquist SAI, Shah N, Overgaard C, Torp-Pedersen C, Glavind K, Larsen T, Plough A, Galvin G, Knudsen A. Association of Previous Cesarean Delivery With Surgical Complications After a Hysterectomy Later in Life. JAMA Surg. 2017.Abstract
Importance: In recent decades, the global rates of cesarean delivery have rapidly increased. Nonetheless, the influence of cesarean deliveries on surgical complications later in life has been understudied. Objective: To investigate whether previous cesarean delivery increases the risk of reoperation, perioperative and postoperative complications, and blood transfusion when undergoing a hysterectomy later in life. Design, Setting, and Participants: This registry-based cohort study used data from Danish nationwide registers on all women who gave birth for the first time between January 1, 1993, and December 31, 2012, and underwent a benign, nongravid hysterectomy between January 1, 1996, and December 31, 2012. The dates of this analysis were February 1 to June 30, 2016. Exposure: Cesarean delivery. Main Outcomes and Measures: Reoperation, perioperative and postoperative complications, and blood transfusion within 30 days of a hysterectomy. Results: Of the 7685 women (mean [SD] age, 40.0 [5.3] years) who met the inclusion criteria, 5267 (68.5%) had no previous cesarean delivery, 1694 (22.0%) had 1 cesarean delivery, and 724 (9.4%) had 2 or more cesarean deliveries. Among the 7685 included women, 3714 (48.3%) had an abdominal hysterectomy, 2513 (32.7%) had a vaginal hysterectomy, and 1458 (19.0%) had a laparoscopic hysterectomy. In total, 388 women (5.0%) had a reoperation within 30 days after a hysterectomy. Compared with women having vaginal deliveries, fully adjusted multivariable analysis showed that the adjusted odds ratio of reoperation for women having 1 previous cesarean delivery was 1.31 (95% CI, 1.03-1.68), and the adjusted odds ratio was 1.35 (95% CI, 0.96-1.91) for women having 2 or more cesarean deliveries. Perioperative and postoperative complications were reported in 934 women (12.2%) and were more frequent in women with previous cesarean deliveries, with adjusted odds ratios of 1.16 (95% CI, 0.98-1.37) for 1 cesarean delivery and 1.30 (95% CI, 1.02-1.65) for 2 or more cesarean deliveries. Blood transfusion was administered to 195 women (2.5%). Women having 2 or more cesarean deliveries had an adjusted odds ratio for receiving blood transfusion of 1.93 (95% CI, 1.21-3.07) compared with women having no previous cesarean delivery. Conclusions and Relevance: Women with at least 1 previous cesarean delivery face an increased risk of complications when undergoing a hysterectomy later in life. The results support policies and clinical efforts to prevent cesarean deliveries that are not medically indicated.
Gupta R, Shah NT, Moriates C, Wallingford S, Arora VM. Disseminating Innovations in Teaching Value-Based Care Through an Online Learning Network. J Grad Med Educ. 2017;9 (4) :509-513.Abstract
BACKGROUND : A national imperative to provide value-based care requires new strategies to teach clinicians about high-value care. OBJECTIVE : We developed a virtual online learning network aimed at disseminating emerging strategies in teaching value-based care. METHODS : The online Teaching Value in Health Care Learning Network includes monthly webinars that feature selected innovators, online discussion forums, and a repository for sharing tools. The learning network comprises clinician-educators and health system leaders across North America. We conducted a cross-sectional online survey of all webinar presenters and the active members of the network, and we assessed program feasibility. RESULTS : Six months after the program launched, there were 277 learning community members in 22 US states. Of the 74 active members, 50 (68%) completed the evaluation. Active members represented independently practicing physicians and trainees in 7 specialties, nurses, educators, and health system leaders. Nearly all speakers reported that the learning network provided them with a unique opportunity to connect with a different audience and achieve greater recognition for their work. Of the members who were active in the learning network, most reported that strategies gleaned from the network were helpful, and some adopted or adapted these innovations at their home institutions. One year after the program launched, the learning network had grown to 364 total members. CONCLUSIONS : The learning network helped participants share and implement innovations to promote high-value care. The model can help disseminate innovations in emerging areas of health care transformation, and is sustainable without ongoing support after a period of start-up funding.
Gombolay M, Golen T, Shah N, Shah J. Queueing theoretic analysis of labor and delivery : Understanding management styles and C-section rates. Health Care Manag Sci. 2017.Abstract
Childbirth is a complex clinical service requiring the coordinated support of highly trained healthcare professionals as well as management of a finite set of critical resources (such as staff and beds) to provide safe care. The mode of delivery (vaginal delivery or cesarean section) has a significant effect on labor and delivery resource needs. Further, resource management decisions may impact the amount of time a physician or nurse is able to spend with any given patient. In this work, we employ queueing theory to model one year of transactional patient information at a tertiary care center in Boston, Massachusetts. First, we observe that the M/G/∞ model effectively predicts patient flow in an obstetrics department. This model captures the dynamics of labor and delivery where patients arrive randomly during the day, the duration of their stay is based on their individual acuity, and their labor progresses at some rate irrespective of whether they are given a bed. Second, using our queueing theoretic model, we show that reducing the rate of cesarean section - a current quality improvement goal in American obstetrics - may have important consequences with regard to the resource needs of a hospital. We also estimate the potential financial impact of these resource needs from the hospital perspective. Third, we report that application of our model to an analysis of potential patient coverage strategies supports the adoption of team-based care, in which attending physicians share responsibilities for patients.
Wakeam E, Molina G, Shah N, Lipsitz SR, Chang DC, Gawande AA, Haynes AB. Variation in the cost of 5 common operations in the United States. Surgery. 2017;162 (3) :592-604.Abstract
BACKGROUND: Health care costs are an important policy focus in the United States. The magnitude and drivers of variation in the costs of common operative procedures are not well understood. We sought to characterize variation in costs across hospitals. METHODS: We used data from the Nationwide Inpatient Sample from 2001-2011 for 5 elective operations: colectomy, coronary artery bypass graft, total knee arthroplasty, cesarean section, and lung resection. Hospitals were benchmarked for each using hierarchical risk- and reliability-adjustment methods to generate an observed-to-expected cost ratio, which was adjusted for patient demographics, comorbidity, wage index, and procedure complexity. Hospitals were divided into quintiles. Characteristics of high- and low-quintile hospitals and their adjusted outcomes were examined. RESULTS: Cost observed-to-expected ratios ranged widely for all 5 procedures: 14.9-fold for colectomy, 5.5-fold for coronary artery bypass graft, 12.5-fold for lung resection, 10.6-fold for total knee arthroplasty, and 28.0-fold for cesarean section. Comparing highest to lowest cost quintiles of hospitals, high-cost hospitals were more likely to serve minority and Medicaid patients. Mortality was elevated significantly in high-cost hospitals for colectomy, coronary artery bypass graft, and lung resection (adjusted odds ratio 1.99, 1.32, 2.57; respectively). Service lines were correlated at low-cost hospitals. There was a significant association between greater procedure volume and low-cost hospitals for colectomy, coronary artery bypass graft, and total knee arthroplasty. CONCLUSION: Despite robust adjustment, there is wide cost variation for common operative procedures in the United States. High-cost hospitals may need to focus on cost reduction at the hospital level to reduce cost across service lines. Benchmarking costs may identify significant opportunities to promote value, or the balance between cost and quality, in operative care in the United States.
Vadnais MA, Hacker MR, Shah NT, Jordan JA, Modest AM, Siegel M, Golen TH. Quality Improvement Initiatives Lead to Reduction in Nulliparous Term Singleton Vertex Cesarean Delivery Rate. Jt Comm J Qual Patient Saf. 2017;43 (2) :53-61.Abstract
BACKGROUND: The nulliparous term singleton vertex (NTSV) cesarean delivery rate has been recognized as a meaningful benchmark. Variation in the NTSV cesarean delivery rate among hospitals and providers suggests many hospitals may be able to safely improve their rates. The NTSV cesarean delivery rate at the authors' institution was higher than state and national averages. This study was conducted to determine the influence of a set of quality improvement interventions on the NTSV cesarean delivery rate. METHODS: From 2008 through 2015, at a single tertiary care academic medical center, a multi-strategy approach that included provider education, provider feedback, and implementation of new policies was used to target evidence-based and inferred factors that influence the NTSV cesarean delivery rate. Data on mode of delivery, maternal outcomes, and neonatal outcomes were collected from birth certificates and administrative claims data. The Cochran-Armitage test and linear regression were used to calculate the p-trend for categorical and continuous variables, respectively. RESULTS: More than 20,000 NTSV deliveries were analyzed, including more than 15,000 during the intervention period. The NTSV cesarean delivery rate declined from 35% to 21% over eight years. The total cesarean delivery rate declined as well. Increase in meconium aspiration syndrome and maternal transfusion were observed. CONCLUSION: Quality improvement initiatives can decrease the NTSV cesarean delivery rate. Any increased incidence of fetal or maternal complications associated with decreased NTSV cesarean delivery rate should be considered in the context of the risks and benefits of vaginal delivery compared to cesarean delivery.
Plough AC, Galvin G, Li Z, Lipsitz SR, Alidina S, Henrich NJ, Hirschhorn LR, Berry WR, Gawande AA, Peter D, et al. Relationship Between Labor and Delivery Unit Management Practices and Maternal Outcomes. Obstet Gynecol. 2017.Abstract
OBJECTIVE: To define, measure, and characterize key competencies of managing labor and delivery units in the United States and assess the associations between unit management and maternal outcomes. METHODS: We developed and administered a management measurement instrument using structured telephone interviews with both the primary nurse and physician managers at 53 diverse hospitals across the United States. A trained interviewer scored the managers' interview responses based on management practices that ranged from most reactive (lowest scores) to most proactive (highest scores). We established instrument validity by conducting site visits among a subsample of 11 hospitals and established reliability using interrater comparison. Using a factor analysis, we identified three themes of management competencies: management of unit culture, patient flow, and nursing. We constructed patient-level regressions to assess the independent association between these management themes and maternal outcomes. RESULTS: Proactive management of unit culture and nursing was associated with a significantly higher risk of primary cesarean delivery in low-risk patients (relative risk [RR] 1.30, 95% CI 1.02-1.66 and RR 1.47, 95% CI 1.13-1.92, respectively). Proactive management of unit culture was also associated with a significantly higher risk of prolonged length of stay (RR 4.13, 95% CI 1.98-8.64), postpartum hemorrhage (RR 2.57, 95% CI 1.58-4.18), and blood transfusion (RR 1.87, 95% CI 1.12-3.13). Proactive management of patient flow and nursing was associated with a significantly lower risk of prolonged length of stay (RR 0.23, 95% CI 0.12-0.46 and RR 0.27, 95% CI 0.11-0.62, respectively). CONCLUSION: Labor and delivery unit management varies dramatically across and within hospitals in the United States. Some proactive management practices may be associated with increased risk of primary cesarean delivery and maternal morbidity. Other proactive management practices may be associated with decreased risk of prolonged length of stay, indicating a potential opportunity to safely improve labor and delivery unit efficiency.
Kozhimannil KB, Karaca-Mandic P, Blauer-Peterson CJ, Shah NT, Snowden JM. Uptake and Utilization of Practice Guidelines in Hospitals in the United States: the Case of Routine Episiotomy. Jt Comm J Qual Patient Saf. 2017;43 (1) :41-48.Abstract
BACKGROUND: The gap between publishing and implementing guidelines differs based on practice setting, including hospital geography and teaching status. On March 31, 2006, a Practice Bulletin published by the American College of Obstetricians and Gynecologists (ACOG) recommended against the routine use of episiotomy and urged clinicians to make judicious decisions to restrict the use of the procedure. OBJECTIVE: This study investigated changes in trends of episiotomy use before and after the ACOG Practice Guideline was issued in 2006, focusing on differences by hospital geographic location (rural/urban) and teaching status. METHODS: In a retrospective analysis of discharge data from the Nationwide Inpatient Sample (NIS)-a 20% sample of US hospitals-5,779,781 hospital-based births from 2002 to 2011 (weighted N = 28,067,939) were analyzed using multivariable logistic regression analysis to measure odds of episiotomy and trends in episiotomy use in vaginal deliveries. RESULTS: The overall episiotomy rate decreased from 20.3% in 2002 to 9.4% in 2011. Across all settings, a comparatively larger decline in episiotomy rates preceded the issuance of the ACOG Practice Guideline (34.0% decline), rather than following it (23.9% decline). The episiotomy rate discrepancies between rural, urban teaching, and urban nonteaching hospitals remained steady prior to the guideline's release; however, differences between urban nonteaching and urban teaching hospitals narrowed between 2007 and 2011 after the guideline was issued. CONCLUSION: Teaching status was a strong predictor of odds of episiotomy, with urban nonteaching hospitals having the highest rates of noncompliance with evidence-based practice. Issuance of clinical guidelines precipitated a narrowing of this discrepancy.
Edmonds JK, O'Hara M, Clarke SP, Shah NT. Variation in Cesarean Birth Rates by Labor and Delivery Nurses. J Obstet Gynecol Neonatal Nurs. 2017;46 (4) :486-493.Abstract
OBJECTIVE: To examine variation in the cesarean birth rates of women cared for by labor and delivery nurses. DESIGN: Retrospective cohort study. SETTING: One high-volume labor and delivery unit at an academic medical center in a major metropolitan area. PARTICIPANTS: Labor and delivery nurses who cared for nulliparous women who gave birth to term, singleton fetuses in vertex presentation. METHODS: Data were extracted from electronic hospital birth records from January 1, 2013 through June 30, 2015. Cesarean rates for individual nurses were calculated based on the number of women they attended who gave birth by cesarean. Nurses were grouped into quartiles by their cesarean rates, and the effect of these rates on the likelihood of cesarean birth was estimated by a logit regression model adjusting for patient-level characteristics and clustering of births within nurses. RESULTS: Seventy-two nurses attended 3,031 births. The mean nurse cesarean rate was 26% (95% confidence interval [23.9, 28.1]) and ranged from 8.3% to 48%. The adjusted odds of cesarean for births attended by nurses in the highest quartile was nearly 3 times (odds ratio = 2.73, 95% confidence interval [2.3, 3.3]) greater than for births attended by nurses in the lowest quartile. CONCLUSION: The labor and delivery nurse assigned to a woman may influence the likelihood of cesarean birth. Nurse-level cesarean birth data could be used to design practice improvement initiatives to improve nurse performance. More precise measurement of the relative influence of nurses on mode of birth is needed.
Gourevitch RA, Mehrotra A, Galvin G, Karp M, Plough A, Shah NT. How do pregnant women use quality measures when choosing their obstetric provider?. Birth [Internet]. 2017 :n/a–n/a. Publisher's VersionAbstract
Background Given increased public reporting of the wide variation in hospital obstetric quality, we sought to understand how women incorporate quality measures into their selection of an obstetric hospital. Methods We surveyed 6141 women through Ovia Pregnancy, an application used by women to track their pregnancy. We used t tests and chi-square tests to compare response patterns by age, parity, and risk status. Results Most respondents (73.2%) emphasized their choice of obstetrician/midwife over their choice of hospital. Over half of respondents (55.1%) did not believe that their choice of hospital would affect their likelihood of having a cesarean delivery. While most respondents (74.9%) understood that quality of care varied across hospitals, few prioritized reported hospital quality metrics. Younger women and nulliparous women were more likely to be unfamiliar with quality metrics. When offered a choice, only 43.6% of respondents reported that they would be willing to travel 20 additional miles farther from their home to deliver at a hospital with a 20 percentage point lower cesarean delivery rate. Discussion Women's lack of interest in available quality metrics is driven by differences in how women and clinicians/researchers conceptualize obstetric quality. Quality metrics are reported at the hospital level, but women care more about their choice of obstetrician and the quality of their outpatient prenatal care. Additionally, many women do not believe that a hospital's quality score influences the care they will receive. Presentations of hospital quality data should more clearly convey how hospital-level characteristics can affect women's experiences, including the fact that their chosen obstetrician/midwife may not deliver their baby.
O'Brien K, Shainker SA, Modest AM, Spiel MH, Resetkova N, Shah N, Hacker MR. Cost Analysis of Following Up Incomplete Low-Risk Fetal Anatomy Ultrasounds. Birth. 2017;44 (1) :35-40.Abstract
OBJECTIVES: To examine the clinical utility and cost of follow-up ultrasounds performed as a result of suboptimal views at the time of initial second-trimester ultrasound in a cohort of low-risk pregnant women. METHODS: We conducted a retrospective cohort study of women at low risk for fetal structural anomalies who had second-trimester ultrasounds at 16 to less than 24 weeks of gestation from 2011 to 2013. We determined the probability of women having follow-up ultrasounds as a result of suboptimal views at the time of the initial second-trimester ultrasound, and calculated the probability of detecting an anomaly on follow-up ultrasound. These probabilities were used to estimate the national cost of our current ultrasound practice, and the cost to identify one fetal anomaly on follow-up ultrasound. RESULTS: During the study period, 1,752 women met inclusion criteria. Four fetuses (0.23% [95% CI 0.06-0.58]) were found to have anomalies at the initial ultrasound. Because of suboptimal views, 205 women (11.7%) returned for a follow-up ultrasound, and one (0.49% [95% CI 0.01-2.7]) anomaly was detected. Two women (0.11%) still had suboptimal views and returned for an additional follow-up ultrasound, with no anomalies detected. When the incidence of incomplete ultrasounds was applied to a similar low-risk national cohort, the annual cost of these follow-up scans was estimated at $85,457,160. In our cohort, the cost to detect an anomaly on follow-up ultrasound was approximately $55,000. CONCLUSIONS: The clinical yield of performing follow-up ultrasounds because of suboptimal views on low-risk second-trimester ultrasounds is low. Since so few fetal abnormalities were identified on follow-up scans, this added cost and patient burden may not be warranted.
2016
Plough A, Galvin G, Caughey A, Gawande A, Shah N. 612: Characterizing variation in management practices among American labor & delivery units. American Journal of Obstetrics & Gynecology. 2016;214 (1) :S326-S327.
Kumar R, Farnan JM, Shah NT, Levy A, Saathoff M, Arora VM. GOTMeDS?: Development and Evaluation of an Interactive Module for Trainees on Reducing Patient's Drug Costs. The American Journal of Medicine. 2016;129 (12) :1338-1342.

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