Healthcare provider experiences interacting with survivors of intimate partner violence: a qualitative study to inform survivor-centered approaches.

BACKGROUND: Intimate partner violence (IPV) remains a pervasive form of gender-based violence (GBV) that is largely undisclosed, especially among women seeking healthcare services in Uganda. Prioritizing survivor needs may improve IPV disclosure. This study explores healthcare worker experiences from provider-patient interactions with survivors seeking antenatal care services (ANC) in Uganda. METHODS: In-depth interviews were conducted among twenty-eight experienced healthcare providers in a rural and an urban-based ANC clinic in Eastern and Central Uganda. Providers were asked what they viewed as the needs and fears of women identified as having experienced any form of IPV. Iterative, inductive/deductive thematic analysis was conducted to discover themes regarding perceived needs, fears, and normalizing violence experienced by IPV survivors. RESULTS: According to healthcare providers, IPV survivors are unaware of available support services, and have need for support services. Providers reported that some survivors were afraid of the consequences of IPV disclosure namely, community stigma, worries about personal and their children's safety, retaliatory abuse, fear of losing their marriage, and partners' financial support. Women survivors also blamed themselves for IPV. Contextual factors underlying survivor concerns included the socio-economic environment that 'normalizes' violence, namely, some cultural norms condoning violence, and survivors' unawareness of their human rights due to self-blame and shame for abuse. CONCLUSIONS: We underscore a need to empower IPV survivors by prioritizing their needs. Results highlight opportunities to create a responsive healthcare environment that fosters IPV disclosure while addressing survivors' immediate medical and psychosocial needs, and safety concerns. Our findings will inform GBV prevention and response strategies that integrate survivor-centered approaches in Uganda.

Intimate partner violence and antenatal care utilization predictors in Uganda: an analysis applying Andersen's behavioral model of healthcare utilization.

BACKGROUND: Optimal utilization of antenatal care (ANC) services improves positive pregnancy experiences and birth outcomes. However, paucity of evidence exists on which factors should be targeted to increase ANC utilization among women experiencing intimate partner violence (IPV) in Uganda. OBJECTIVE: To determine the independent association between IPV exposure and ANC utilization as well as the predictors of ANC utilization informed by Andersen's Behavioral Model of Healthcare Utilization. METHODS: We analyzed 2016 Uganda Demographic and Health Survey data that included a sample of 1,768 women with children aged 12 to 18 months and responded to both ANC utilization and IPV items. Our outcome was ANC utilization, a count variable assessed as the number of ANC visits in the last 12 months preceding the survey. The key independent variable was exposure to any IPV form defined as self-report of having experienced physical, sexual and/or emotional IPV. Covariates were grouped into predisposing (age, formal education, religion, problem paying treatment costs), enabling (women's autonomy, mass media exposure), need (unintended pregnancy, parity, history of pregnancy termination), and healthcare system/environmental factors (rural/urban residence, spatial accessibility to health facility). Poisson regression models tested the independent association between IPV and ANC utilization, and the predictors of ANC utilization after controlling for potential confounders. RESULTS: Mean number of ANC visits (ANC utilization) was 3.71 visits with standard deviation (SD) of ± 1.5 respectively. Overall, 60.8% of our sample reported experiencing any form of IPV. Any IPV exposure was associated with lower number of ANC visits (3.64, SD ± 1.41) when compared to women without IPV exposure (3.82, SD ± 1.64) at p = 0.013. In the adjusted models, any IPV exposure was negatively associated with ANC utilization when compared to women with no IPV exposure after controlling for enabling factors (Coef. -0.03; 95%CI -0.06,-0.01), and healthcare system/environmental factors (Coef. -0.06; 95%CI -0.11,-0.04). Predictors of ANC utilization were higher education (Coef. 0.27; 95%CI 0.15,0.39) compared with no education, high autonomy (Coef. 0.12; 95%CI 0.02,0.23) compared to low autonomy, and partial media exposure (Coef. 0.06; 95%CI 0.01,0.12) compared to low media exposure. CONCLUSION: Addressing enabling and healthcare system/environmental factors may increase ANC utilization among Ugandan women experiencing IPV. Prevention and response interventions for IPV should include strategies to increase girls' higher education completion rates, improve women's financial autonomy, and mass media exposure to improve ANC utilization in similar populations in Uganda.

Spatial accessibility to health facilities among pregnant women with and without exposure to intimate partner violence in Uganda.

BACKGROUND: Poor physical access to health facilities could increase the likelihood of undetected intimate partner violence (IPV) during pregnancy. We aimed to determine sub-regional differences and associations between spatial accessibility to health facilities and IPV among pregnant women in Uganda. METHOD: Weighted cross-sectional analyses were conducted using merged 2016 Uganda Demographic and Health Survey and 2014 Uganda Bureau of Statistics health facility datasets. Our study population were 986 women who self-reported being currently pregnant and responded to IPV items. Outcome was spatial accessibility computed as the near point linear distance [< 5 km (optimal) vs. ≥ 5 km (low)] between women's enumeration area and health facility according to government reference cutoffs. Primary independent variable (any IPV) was defined as exposure to at least one of physical, emotional, and sexual IPV forms. Logistic regression models were sequentially adjusted for covariates in blocks based on Andersen's behavioral model of healthcare utilization. Covariates included predisposing (maternal age, parity, residence, partner controlling behavior), enabling (wealth index, occupation, education, economic empowerment, ANC visit frequency), and need (wanted current pregnancy, difficulty getting treatment money, afraid of partner, and accepted partner abuse) factors. RESULTS: Respondents' mean age was 26.1 years with ± 9.4 standard deviations (SD), mean number of ANC visits was 3.8 (± 1.5 SD) and 492/986 (49.9%) pregnant women experienced IPV. Median spatial accessibility to the nearest health facility was 4.1 km with interquartile range (IQR) from 0.2 to 329.1 km. Southwestern, and Teso subregions had the highest average percentage of pregnant women experiencing IPV (63.8-66.6%) while Karamoja subregion had the highest median spatial accessibility (7.0 to 9.3 km). In the adjusted analysis, pregnant women exposed to IPV had significantly higher odds of low spatial accessibility to nearest health facilities when compared to pregnant women without IPV exposure after controlling for enabling factors in Model 2 (aOR 1.6; 95%CI 1.2, 2.3) and need factors in Model 3 (aOR 1.5; 95%CI 1.1, 3.8). CONCLUSIONS: Spatial accessibility to health facilities were significantly lower among pregnant women with IPV exposure when compared to those no IPV exposure. Improving proximity to the nearest health facilities with ANC presents an opportunity to intervene among pregnant women experiencing IPV. Focused response and prevention interventions for violence against pregnant women should target enabling and need factors.

PREvalence Study on Surgical COnditions (PRESSCO) 2020: A Population-Based Cross-Sectional Countrywide Survey on Surgical Conditions in Post-Ebola Outbreak Sierra Leone.

BACKGROUND: Understanding the burden of diseases requiring surgical care at national levels is essential to advance universal health coverage. The PREvalence Study on Surgical COnditions (PRESSCO) 2020 is a cross-sectional household survey to estimate the prevalence of physical conditions needing surgical consultation, to investigate healthcare-seeking behavior, and to assess changes from before the West African Ebola epidemic. METHODS: This study (ISRCTN: 12353489) was built upon the Surgeons Overseas Surgical Needs Assessment (SOSAS) tool, including expansions. Seventy-five enumeration areas from 9671 nationwide clusters were sampled proportional to population size. In each cluster, 25 households were randomly assigned and visited. Need for surgical consultations was based on verbal responses and physical examination of selected household members. RESULTS: A total of 3,618 individuals from 1,854 households were surveyed. Compared to 2012, the prevalence of individuals reporting one or more relevant physical conditions was reduced from 25 to 6.2% (95% CI 5.4-7.0%) of the population. One-in-five conditions rendered respondents unemployed, disabled, or stigmatized. Adult males were predominantly prone to untreated surgical conditions (9.7 vs. 5.9% women; p < 0.001). Financial constraints were the predominant reason for not seeking care. Among those seeking professional health care, 86.7% underwent surgery. CONCLUSION: PRESSCO 2020 is the first surgical needs household survey which compares against earlier study data. Despite the 2013-2016 Ebola outbreak, which profoundly disrupted the national healthcare system, a substantial reduction in reported surgical conditions was observed. Compared to one-time measurements, repeated household surveys yield finer granular data on the characteristics and situations of populations in need of surgical treatment.

Facilitators and barriers to routine intimate partner violence screening in antenatal care settings in Uganda.

BACKGROUND: Uganda clinical guidelines recommend routine screening of pregnant women for intimate partner violence (IPV) during antenatal care (ANC). Healthcare providers play a critical role in identifying IPV during pregnancy in ANC clinics. This study explored facilitators and barriers for IPV screening during pregnancy (perinatal IPV screening) by ANC-based healthcare workers in Uganda. METHODS: We conducted qualitative in-depth interviews among twenty-eight purposively selected healthcare providers in one rural and an urban-based ANC health center in Eastern and Central Uganda respectively. Barriers and facilitators to IPV screening during ANC were identified iteratively using inductive-deductive thematic analysis. RESULTS: Participants had provided ANC services for a median (IQR) duration of 4.0 (0.1-19) years. Out of 28 healthcare providers, 11 routinely screened women attending ANC clinics for IPV and 10 had received IPV-related training. Barriers to routine IPV screening included limited staffing and space resources, lack of comprehensive gender-based violence (GBV) training and provider unawareness of the extent of IPV during pregnancy. Facilitators were availability of GBV protocols and providers who were aware of IPV (or GBV) tools tended to use them to routinely screen for IPV. Healthcare workers reported the need to establish patient trust and a safe ANC clinic environment for disclosure to occur. ANC clinicians suggested creation of opportunities for triage-level screening and modification of patients' ANC cards used to document women's medical history. Some providers expressed concerns of safety or retaliatory abuse if perpetrating partners were to see reported abuse. CONCLUSIONS: Our findings can inform efforts to strengthen GBV interventions focused on increasing routine perinatal IPV screening by ANC-based clinicians. Implementation of initiatives to increase routine perinatal IPV screening should focus on task sharing, increasing comprehensive IPV training opportunities, including raising awareness of IPV severity, trauma-informed care and building trusting patient-physician relationships.

Adherence to COVID-19 preventive measures and its association with intimate partner violence among women in informal settings of Kampala, Uganda.

Cases of coronavirus disease 2019 (COVID-19) detected, and COVID-19 associated mortality increased since the first case was confirmed in Uganda. While adherence to WHO-recommended measures to disrupt COVID-19 transmission has since been implemented, it has been reported to be sub-optimal. An increase in intimate partner violence (IPV) cases was linked to enforcement of COVID-19 lockdowns and other preventive measures especially in informal settings of Kampala. We determined the association between adherence to COVID-19 preventive measures and intimate partner violence among women dwelling in informal settings in Kampala, Uganda. Between July and October 2020, we conducted a three-month prospective cohort study of 148 women living in informal settlements of Kampala during the COVID-19 lockdown and easing of restrictive measures. Participants were surveyed at baseline, at 3-weeks and 6-weeks (endline). The dependent variable was adherence to COVID-19 preventive measures (remained adherent vs poorly adherent) between baseline and endline surveys. This composite outcome variable was computed from implementing all four variables: social distancing, wearing face masks, frequent hand washing and use of hand sanitizers at baseline and endline surveys. The key independent variable was IPV measured as experiencing at least one form of physical, emotional, or sexual IPV. Covariates were age, education, marital status, household size, occupation, and having problems getting food. Adjusted logistic regression analyses tested the independent association between adherence to COVID-19 preventive measures and intimate partner violence. Among 148 respondents, the mean age (SD) was 32.9 (9.3) years, 58.1% were exposed to at least one form of IPV, and 78.2% had problems getting food. Overall, 10.1% were poorly adherent to COVID-19 preventive measures during the first COVID-19 wave. After controlling for potential confounders, remaining adherent to COVID-19 preventive measures were more likely to experience intimate partner violence when compared to women who were poorly adherent to COVID-19 preventive measures during the first COVID-19 wave in Uganda [OR 3.87 95%CI (1.09, 13.79)]. Proportions of women in informal settlements of Kampala experiencing at least one form of IPV during the first COVID-19 wave is substantial. Remaining adherent to preventive measures for COVID-19 transmission may increase IPV exposure risk among women living in informal settlements in Kampala. Contextualizing COVID-19 interventions to the needs of marginalized and vulnerable women and girls in informal settings of Kampala is warranted. Processes to integrated violence prevention and response strategies into the Uganda COVID-19 prevention strategy are underscored.

National Needs Assessment for a Pediatric Trauma Toolkit: General Requirements for Moderate- and High-Volume Hospitals.

BACKGROUND: Optimal outcomes have been reported for children treated at pediatric trauma centers; however, most children are treated at nonpediatric trauma centers or nonpediatric general hospitals. Hospitals that are not verified or designated pediatric trauma centers may lack the training and level of comfort and skill when treating severely injured children. OBJECTIVE: This study focused on identifying common pediatric guidelines for standardization across all trauma centers to inform a pediatric trauma toolkit. METHODS: A needs assessment survey was developed highlighting the guidelines from an expert committee review. The purpose of the survey was to prioritize needed items for the development of a pediatric trauma toolkit. Professional trauma organizations distributed the survey to their respective memberships to ensure good representation of people who care for traumatically injured children and work in trauma centers. Deidentified survey results were analyzed with frequencies and descriptive statistics provided. Data were compared by hospital trauma verification level using a chi-square test. The value of p < .05 was considered statistically significant. RESULTS: A total of 303 people responded to the survey. The majority of respondents reported a high value in the creation of a pediatric trauma toolkit for the guidelines that were included. There was variability in the reported access to the guidelines, indicating a significant need for the toolkit development and dissemination. CONCLUSION: As expected, Level III centers reported the largest gaps in access to standardized pediatric guidelines and demonstrated high levels of interest and need.

Ecological Study of Variability in the Relationship between Liver Cancer Mortality and Racial Residential Segregation.

Racial segregation has been identified as a predictor for the burden of cancer in several different metropolitan areas across the United States. This ecological study tested relationships between racial segregation and liver cancer mortality across several different metropolitan statistical areas in Wisconsin. Tract-level liver cancer mortality rates were calculated using cases from 2003-2012. Hotspot analysis was conducted and segregation scores in high, low, and baseline mortality tracts were compared using ANOVA. Spatial regression analysis was done, controlling for socioeconomic advantage and rurality. Black isolation scores were significantly higher in high-mortality tracts compared to baseline and low-mortality tracts, but stratification by metropolitan areas found this relationship was driven by two of the five metropolitan areas. Hispanic isolation was predictive for higher mortality in regression analysis, but this effect was not found across all metropolitan areas. This study showed associations between liver cancer mortality and racial segregation but also found that this relationship was not generalizable to all metropolitan areas in the study area.

Age- and Sex-Specific Risk Factors for Youth Suicide: A Mixed Methods Review.

BACKGROUND: Suicide is the second-leading cause of death for individuals ages 10 through 34, and rates are rising. This study seeks to broaden the understanding of suicide in youths ages 10-17. STUDY AIMS: Use a mixed-methods approach to investigate the different characteristics leading to youth suicide by 2 distinct youth age subgroups (pre-high school and high school) and by sex. METHODS: A retrospective review and analysis of the Wisconsin Violent Death Reporting System data on Wisconsin resident suicides was conducted for 146 individuals ages 10 through 17 who died by suicide from 2012 through 2016. RESULTS: A total of 20 common characteristics were extrapolated from the narratives. Among the 10- to 13-year-old age group, 4 age-specific characteristics emerged: estrangement, exposure to suicide, school issues, and adversity. Six age-specific characteristics emerged among the 14- to 17-year-old age group: history of abuse (P <0.01), history of self-harm (P < 0.01), and history of suicide attempt (P < 0.01) were highly associated with female sex. CONCLUSIONS: This study demonstrates that there are unique age and sex-specific characteristics for teenage suicide. This information can be leveraged to plan focused prevention strategies relevant to youth in 2 distinct age groups.

Pediatric trauma triage: A Pediatric Trauma Society Research Committee systematic review.

BACKGROUND: Significant variability exists in the triage of injured children with most systems using mechanism of injury and/or physiologic criteria. It is not well established if existing triage criteria predict the need for intervention or impact morbidity and mortality. This study evaluated existing evidence for pediatric trauma triage. Questions defined a priori were as follows: (1) Do prehospital trauma triage criteria reduce mortality? (2) Do prehospital trauma scoring systems predict outcomes? (3) Do trauma center activation criteria predict outcomes? (4) Do trauma center activation criteria predict need for procedural or operative interventions? (5) Do trauma bay pediatric trauma scoring systems predict outcomes? (6) What secondary triage criteria for transfer of children exist? METHODS: A structured, systematic review was conducted, and multiple databases were queried using search terms related to pediatric trauma triage. The literature search was limited to January 1990 to August 2019. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology was applied with the methodological index for nonrandomized studies tool used to assess the quality of included studies. Qualitative analysis was performed. RESULTS: A total of 1,752 articles were screened, and 38 were included in the qualitative analysis. Twelve articles addressed questions 1 and 2, 21 articles addressed question 3 to 5, and five articles addressed question 6. Existing literature suggest that prehospital triage criteria or scoring systems do not predict or reduce mortality, although selected physiologic parameters may. In contrast, hospital trauma activation criteria can predict the need for procedures or surgical intervention and identify patients with higher mortality; again, physiologic signs are more predictive than mechanism of injury. Currently, no standardized secondary triage/transfer protocols exist. CONCLUSION: Evidence supporting the utility of prehospital triage criteria for injured children is insufficient, while physiology-based trauma system activation criteria do appropriately stratify injured children. The absence of strong evidence supports the need for further prehospital and secondary transfer triage-related research. LEVEL OF EVIDENCE: Systematic review study, level II.

Racial disparities of liver cancer mortality in Wisconsin.

PURPOSE: To calculate tract-level estimates of liver cancer mortality in Wisconsin and identify relationships with racial and socioeconomic variables. METHODS: County-level standardized mortality ratios (SMRs) of liver cancer in Wisconsin were calculated using traditional indirect adjustment methods for cases from 2003 to 2012. Tract-level SMRs were calculated using adaptive spatial filtering (ASF). The tract-level SMRs were checked for correlations to a socioeconomic advantage index (SEA) and percent racial composition. Non-spatial and spatial regression analyses with tract-level SMR as the outcome were conducted. RESULTS: County-level SMR estimates were shown to mask much of the variance within counties across their tracts. Liver cancer mortality was strongly correlated with the percent of Black residents in a census tract and moderately associated with SEA. In the multivariate spatially-adjusted regression analysis, only Percent Black composition remained significantly associated with an increased liver cancer SMR. CONCLUSIONS: Using ASF, we developed a high-resolution map of liver cancer mortality in Wisconsin. This map provided details on the distribution of liver cancer that were inaccessible in the county-level map. These tract-level estimates were associated with several racial and socioeconomic variables.

Safety and Efficacy of Vasopressin After Fontan Completion: A Randomized Pilot Study.

BACKGROUND: Arginine vasopressin is a nonapeptide hormone with effects on intracellular water transport and arterial tone that is used in distributive shock and following cardiopulmonary bypass. We sought to evaluate the safety and efficacy of vasopressin infusion on hemodynamics and fluid balance in the early postoperative period after Fontan completion. METHODS: We conducted a randomized, double-blinded, placebo-controlled study of vasopressin infusion for 24 hours after cardiopulmonary bypass for Fontan completion. Patient characteristics, hospital outcomes, and measures of hemodynamic parameters, urine output, chest tube drainage, fluid balance, laboratory data, and plasma arginine vasopressin concentrations were collected at baseline and for 48 postoperative hours. Data were analyzed using mixed-effect regressions. RESULTS: Twenty patients were randomized, 10 to vasopressin and 10 to placebo. Transpulmonary gradient (6.4 ± 0.5 vs 8.3 ± 0.5 mm Hg, P = .011) and chest tube drainage (23 ± 20 vs 40 ± 20 mL/kg, P = .028) for 48 hours after surgery were significantly lower in the vasopressin arm compared to placebo. Arginine vasopressin concentrations were elevated above baseline after surgery until 4 hours post cardiac intensive care unit admission in both arms, and higher in the vasopressin arm during postoperative infusion. No differences in sodium concentration, liver function, or renal function were noted between groups. CONCLUSIONS: Vasopressin infusion after Fontan completion appears safe and was associated with reduced transpulmonary gradient and chest tube drainage in the early postoperative period. A larger multiinstitutional study may show further outcome benefit.

Changes in Health Care Utilization for Pediatric Patients Treated at a Specialized Outpatient Pain Clinic.

INTRODUCTION: Pediatric pain clinics may be the most efficacious way to manage chronic and recurrent pain in children and adolescents, but families often rely heavily on nonspecialized care, such as the emergency department (ED). Health care utilization patterns for pediatric chronic pain have not been fully explored, particularly the patient-level factors that may contribute to underutilization or overutilization of certain services. OBJECTIVES: To identify health care utilization patterns before and after treatment at a pediatric pain clinic and the associations by primary diagnosis and patient sociodemographics. METHODS: Data were obtained for all pediatric patients with an initial visit at an outpatient pediatric pain clinic between 2005 and 2009. Individual-level data included patient demographics, insurance type, and diagnosis at first pain clinic visit. Rate of health care system utilization 3 months before and after the initial pain clinic visit was quantified. Health care utilization rates before and after the initial visit to the pain clinic were compared using Wilcoxon signed-rank test. RESULTS: Eight hundred twenty-six pediatric pain clinic patients were included. Overall, there were significant decreases in ED utilization (P < 0.001) and increases in outpatient service utilization (P < 0.001) after the initial pain clinic visit. Similar patterns were noted for patients by diagnosis (headache, musculoskeletal, or abdominal pain diagnoses) and among those who were female, white, 15 to 18 years old, privately insured, middle- or high-income (P < 0.05). CONCLUSIONS: Visits to an outpatient pediatric pain clinic were associated with shifts in health care utilization patterns. Important changes were an overall decrease in emergency visits and an increase in outpatient visits.

Efficacy of surveillance ultrasound for venous thromboembolism diagnosis in critically ill children after trauma.

INTRODUCTION: Venous thromboembolism (VTE) is increasingly prevalent in injured children admitted to the intensive care unit (ICU). Few data exist to support VTE pharmacologic prophylaxis or ultrasound (US) surveillance in children with high bleeding risk. After implementation of screening US guidelines, we sought to describe our experience, hypothesizing that screening US of children at highest risk for VTE results in earlier detection and management. STUDY DESIGN: A retrospective analysis was conducted on prospectively collected data of injured children admitted to an American College of Surgeons Verified level 1 Pediatric Trauma Center from 2010 to 2015. In patients at high risk for both VTE and bleeding (HRHR), guidelines recommended deferral of pharmacologic prophylaxis and a screening US at ≥7 ICU days if bleeding risk remained. Outcomes analyzed included VTE rates, guideline compliance, and US timing. The rate of deep vein thrombosis (DVT) detection (number of DVT captured/number of US obtained) was examined. RESULTS: Of 4061 trauma patients, 588 (14.5%) were critically injured including 112 patients who met HRHR criteria. The rate of VTE in the HRHR group ≥7 ICU days was 25% (14/56). Of 23 VTE diagnosed in the ICU, 17 were detected by 49 US performed (34.7%), with the remaining 6 diagnosed by computed tomography. DVT was detected earlier than the US guideline recommended 7 days, independent of symptoms. Guideline compliance was 86%. CONCLUSION: Critically injured children at risk for bleeding frequently develop VTE. Surveillance ultrasound in patients at high risk for both VTE and bleeding allows earlier detection and treatment. LEVEL OF EVIDENCE: Therapeutic study, level II.

Medical Monitoring for Occupational Asthma Among Toluene Diisocyanate Production Workers in the United States.

OBJECTIVE: The aim of this study was to describe a study of medical monitoring methods and lessons learned in detecting health outcomes in U.S. plants producing toluene diisocyanate (TDI). METHODS: A multidisciplinary team implemented a medical and environmental monitoring program in three TDI plants. RESULTS: Of 269 eligible workers, 197 (73%) participated and 42 (21%) met symptom and/or lung function criteria that would trigger evaluation for possible asthma over 5 years of data collection. Subsequent evaluation was delayed for most, and a web-based data collection system improved timeliness. CONCLUSION: Medical monitoring of TDI workers identified workers triggering further assessment per study protocol. Systems and/or personnel to ensure rapid follow-up are needed to highlight when triggering events represent potential cases of asthma needing further evaluation. Implementation of a research protocol requires resources and oversight beyond an occupational health program.

Incidence of Occupational Asthma and Exposure to Toluene Diisocyanate in the United States Toluene Diisocyanate Production Industry.

OBJECTIVE: This study examines asthma risk in facilities producing toluene diisocyanate (TDI). METHODS: A total of 197 workers were monitored from 2007 to 2012. TDI air concentrations were used to estimate exposures. RESULTS: The incidence of cases consistent with TDI-induced asthma was 0.009 per person-years (seven cases) or consistent with TDI-induced asthma or asthma indeterminate regarding work-relatedness was 0.012 (nine cases). Increased risk of cases consistent with TDI asthma was observed for cumulative (odds ratio [OR] = 2.08, 95% confidence interval [CI] 1.07 to 4.05) per logarithm parts per billion-years and peak TDI exposures (OR = 1.18, 95% CI 1.06 to 1.32) (logarithm parts per billion). There was a weak association with cumulative and peak exposures for decline of short-term forced expiratory volume in one second (FEV1). Asthma symptoms were associated with workers noticing an odor of TDI (OR 6.02; 95% CI 1.36 to 26.68). CONCLUSIONS: There is evidence that cumulative and peak exposures are associated with TDI-induced asthma.

Longitudinal and Cross-sectional Analyses of Lung Function in Toluene Diisocyanate Production Workers.

OBJECTIVE: The aim of this study was to investigate lung function among toluene diisocyanate (TDI) production workers. METHODS: One hundred ninety-seven U.S workers performed spirometry from 2006 through 2012. Results were compared within the study cohort and with U.S. population measures. A mixed-effects model assessed factors affecting repeated forced expiratory volume in 1 second (FEV1) measurements. RESULTS: The cohort's mean FEV1 and forced vital capacity (FVC) percent reference values, although greater than 90%, were significantly lower and the prevalence of abnormal spirometry (predominantly restrictive pattern) was significantly higher than in the U.S. POPULATION: Differences in lung function among workers with higher cumulative TDI exposure were in the direction of an exposure effect, but not significant. CONCLUSION: We found little evidence of an adverse effect of TDI exposure on longitudinal spirometry in these workers. The association between TDI exposure and the increasing prevalence of a restrictive pattern needs further exploration.

Utilizing stricture indices to predict dilation of strictures after esophageal atresia repair.

BACKGROUND: Anastomotic stricture is the most common postoperative complication in infants undergoing repair of esophageal atresia with or without tracheoesophageal fistula (EA/TEF). Stricture indices (SIs) are used to predict infants at risk for stricture requiring dilation. We sought to determine the most accurate SI and optimal timing for predicting anastomotic dilation. MATERIALS AND METHODS: A retrospective study of infants undergoing repair of EA/TEF between 2008 and 2013 was performed. Esophagrams were used to calculate four SIs (upper pouch esophageal anastomotic stricture index [U-EASI], lower pouch esophageal anastomotic stricture index [L-EASI], lateral SI, and anterior/posterior SI). The best performing SI was identified. Logistic regression analysis was performed to determine if a first or second esophagram SI threshold was associated with dilation. A receiver operating characteristic curve measured the accuracy of the model using SIs to predict dilation. RESULTS: Of 45 EA/TEF infants included, 20 (44%) had postoperative strictures requiring dilation. As the best performing SI, logistic regression analysis showed that U-EASI as a continuous variable was predictive of dilation (P = 0.03) but was not significant at U-EASI ≤ 0.37. However, U-EASI ≤ 0.37 was associated with needing earlier dilation. On second esophagram (median, 38 days), U-EASI of ≤0.39 was significantly associated with dilation (OR: 7.8, 95% CI: 1.05-57.58, P = 0.04). The area under the receiver operating characteristic curve of the U-EASI model controlling for days to esophagram demonstrated improved predictive ability from first (AUC 0.73) to second esophagram (AUC 0.81). CONCLUSIONS: Calculation of the SI utilizing a U-EASI ≤ 0.39 on the delayed esophagram is associated with future anastomotic dilation. A multi-institutional study is necessary to confirm the predictive ability of the U-EASI.