Thomas Uray1, Florian B Mayr2, James Fitzgibbon3, Jon C Rittenberger4, Clifton W Callaway5, Tomas Drabek6, Anthony Fabio7, Derek C Angus2, Patrick M Kochanek8, Cameron Dezfulian9. 1. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria. 2. Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 3. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 4. Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 5. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 6. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 7. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA. 8. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA. 9. Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA. Electronic address: dezfulianc@upmc.edu.
Abstract
AIM: In a prior study of seven North American cities Pittsburgh had the highest crude rate of cardiac arrest deaths in patients 18 to 64 years of age, particularly in neighborhoods with lower socioeconomic status (SES). We hypothesized that lower SES, associated poor health behaviors (e.g., illicit drug use) and pre-existing comorbid conditions (grouped as socioeconomic factors [SE factors]) could affect the type and severity of cardiac arrest, thus outcomes. METHODS: We retrospectively identified patients aged 18 to 64 years treated for in-hospital (IHCA) and out-of hospital arrest (OHCA) at two Pittsburgh hospitals between January 2010 and July 2012. We abstracted data on baseline demographics and arrest characteristics like place of residence, insurance and employment status. Favorable cerebral performance category [CPC] (1 or 2) was our primary outcome. We examined the associations between SE factors, cardiac arrest variables and outcome as well as post-resuscitation care. RESULTS: Among 415 subjects who met inclusion criteria, unfavorable CPC were more common in patients who were unemployed, had a history of drug abuse or hypertension. In OHCA, favorable CPC was more often associated with presentation with ventricular fibrillation/tachycardia (OR 3.53, 95% CI 1.43-8.74, p = 0.006) and less often associated with non-cardiovascular arrest etiology (OR 0.22, 95% CI 0.08-0.62, p = 0.004). We found strong associations between specific SE factors and arrest factors associated with outcome in OHCA patients only. Significant differences in post-resuscitation care existed based on injury severity, not on SES. CONCLUSIONS: SE factors strongly influence type and severity of OHCA but not IHCA resulting in an association with outcomes.
AIM: In a prior study of seven North American cities Pittsburgh had the highest crude rate of cardiac arrest deaths in patients 18 to 64 years of age, particularly in neighborhoods with lower socioeconomic status (SES). We hypothesized that lower SES, associated poor health behaviors (e.g., illicit drug use) and pre-existing comorbid conditions (grouped as socioeconomic factors [SE factors]) could affect the type and severity of cardiac arrest, thus outcomes. METHODS: We retrospectively identified patients aged 18 to 64 years treated for in-hospital (IHCA) and out-of hospital arrest (OHCA) at two Pittsburgh hospitals between January 2010 and July 2012. We abstracted data on baseline demographics and arrest characteristics like place of residence, insurance and employment status. Favorable cerebral performance category [CPC] (1 or 2) was our primary outcome. We examined the associations between SE factors, cardiac arrest variables and outcome as well as post-resuscitation care. RESULTS: Among 415 subjects who met inclusion criteria, unfavorable CPC were more common in patients who were unemployed, had a history of drug abuse or hypertension. In OHCA, favorable CPC was more often associated with presentation with ventricular fibrillation/tachycardia (OR 3.53, 95% CI 1.43-8.74, p = 0.006) and less often associated with non-cardiovascular arrest etiology (OR 0.22, 95% CI 0.08-0.62, p = 0.004). We found strong associations between specific SE factors and arrest factors associated with outcome in OHCA patients only. Significant differences in post-resuscitation care existed based on injury severity, not on SES. CONCLUSIONS: SE factors strongly influence type and severity of OHCA but not IHCA resulting in an association with outcomes.
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