Sepsis, a condition of enormous public health importance, has two-fold regional variation in mortality in the US, with the highest cluster in the Southeastern US. Few studies have had the large-scale, national, population-based design required to explain these regional variations. Our proposed study will capitalize on the infrastructure of the 30,000 subject REGARDS community-based cohort, which has the elements needed to identify individual and community-level sepsis risk factors and their mediating effects on regional sepsis variations. Our study will advance sepsis science by identifying individual and community-level factors amenable to risk reduction, potentially leading to strategies to prevent sepsis and reduce its high mortality. Our study objectives are 1) identify individual, family, community and societal/system healthcare factors associated with sepsis attack rates and case fatality, and 2) determine their mediating effects on regional sepsis variations. Sepsis is a dangerous syndrome of body-wide systemic inflammation triggered by microbial infection. Sepsis may injure vital organs, resulting in shock and death. Sepsis is a major community threat, resulting in over 750,000 hospitalizations and 215,000 deaths in the US annually - exceeding deaths resulting from acute myocardial infarction, lung cancer or breast cancer. Our recent study indicates a Southeastern US """"""""belt"""""""" of two-fold excess sepsis mortality, reflecting almost 8,500 excess sepsis deaths annually. To understand the reasons for regional variations in sepsis mortality, a study must be able to identify the pre-hospital individual and community-level risk factors associated with sepsis attack rates and case fatality. However, few studies have had the large-scale, national, population-based design required to examine these relationships. We propose an ancillary study to the Reasons for Geographic And Racial Differences in Stroke (REGARDS) study, an ongoing NINDS-funded national cohort of >30,000 community-dwelling adults. Using the well- established infrastructure of this large cohort study, we will identify sepsis hospitalizations and deaths, drawing upon over 3,300 events across a 10-year span. We will test associations between baseline individual and community healthcare-related characteristics (resources, access and quality of care) and the risks of incident sepsis and 28-day sepsis death (case fatality), determining their mediating influences on regional sepsis variations.
The specific aims of this study are to 1) Determine US geographic variations in sepsis susceptibility (attack rate) and case fatality, 2) Determine the individual and family characteristics that mediate sepsis geographic variations and 3) Determine the community and societal/system healthcare characteristics that mediate sepsis geographic variations.

Public Health Relevance

Sepsis is a life-threatening condition consisting of body-wide inflammation triggered by infections such as pneumonia, kidney infection, cellulitis or meningitis. This study will determine if certain individuals or communities are prone to develop sepsis. Information from this study will support strategies to reduce or prevent sepsis in the community. .

Agency
National Institute of Health (NIH)
Institute
National Institute of Nursing Research (NINR)
Type
Research Project (R01)
Project #
5R01NR012726-04
Application #
8651767
Study Section
Health Services Organization and Delivery Study Section (HSOD)
Program Officer
Hardy, Lynda R
Project Start
2011-07-15
Project End
2016-04-30
Budget Start
2014-05-01
Budget End
2015-04-30
Support Year
4
Fiscal Year
2014
Total Cost
Indirect Cost
Name
University of Alabama Birmingham
Department
Emergency Medicine
Type
Schools of Medicine
DUNS #
City
Birmingham
State
AL
Country
United States
Zip Code
35294
Chaudhary, Ninad S; Donnelly, John P; Moore, Justin X et al. (2017) Association of baseline steroid use with long-term rates of infection and sepsis in the REGARDS cohort. Crit Care 21:185
Akinyemiju, Tomi; Moore, Justin Xavier; Judd, Suzanne et al. (2017) Metabolic dysregulation and cancer mortality in a national cohort of blacks and whites. BMC Cancer 17:856
Wang, Henry E; Jones, Allison R; Donnelly, John P (2017) Revised National Estimates of Emergency Department Visits for Sepsis in the United States. Crit Care Med 45:1443-1449
Donnelly, John P; Safford, Monika M; Shapiro, Nathan I et al. (2017) Application of the Third International Consensus Definitions for Sepsis (Sepsis-3) Classification: a retrospective population-based cohort study. Lancet Infect Dis 17:661-670
Moore, Justin Xavier; Akinyemiju, Tomi; Wang, Henry E (2017) Pollution and regional variations of lung cancer mortality in the United States. Cancer Epidemiol 49:118-127
Mahalingam, Mythreyi; Moore, Justin Xavier; Donnelly, John P et al. (2017) Frailty Syndrome and Risk of Sepsis in the REasons for Geographic And Racial Differences in Stroke (REGARDS) Cohort. J Intensive Care Med :885066617715251
Donnelly, John P; Nair, Sunil; Griffin, Russell et al. (2017) Association of Diabetes and Insulin Therapy With Risk of Hospitalization for Infection and 28-Day Mortality Risk. Clin Infect Dis 64:435-442
Moore, Justin Xavier; Donnelly, John P; Griffin, Russell et al. (2016) Defining Sepsis Mortality Clusters in the United States. Crit Care Med 44:1380-7
Guirgis, Faheem W; Donnelly, John P; Dodani, Sunita et al. (2016) Cholesterol levels and long-term rates of community-acquired sepsis. Crit Care 20:408
Donnelly, John P; Locke, Jayme E; MacLennan, Paul A et al. (2016) Inpatient Mortality Among Solid Organ Transplant Recipients Hospitalized for Sepsis and Severe Sepsis. Clin Infect Dis 63:186-94

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