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JOURNAL ARTICLE
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
RESEARCH SUPPORT, NON-U.S. GOV'T
RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
National Trends in Timing of Death Among Patients With Septic Shock, 1994-2014.
Critical Care Medicine 2019 November
OBJECTIVES: To assess trends in timing of mortality among patients with septic shock.
DESIGN: Retrospective cohort study.
SETTING: Agency for Healthcare Research and Quality's Healthcare Cost and Utilization Project's National Inpatient Sample, 1994-2014.
PATIENTS: Hospitalized adults (≥ 18 yr) with International Classification of Diseases, 9th Edition, Clinical Modification codes consistent with septic shock; secondary analysis: adults with International Classification of Diseases, 9th Edition, Clinical Modification codes consistent with acute respiratory failure receiving invasive mechanical ventilation and patients with both septic shock and acute respiratory failure receiving invasive mechanical ventilation.
INTERVENTIONS: None.
MEASUREMENTS AND MAIN RESULTS: From 1994 to 2014, 48-hour mortality rates decreased among patients with septic shock (21.2% to 10.8%) and septic shock with acute respiratory failure receiving invasive mechanical ventilation (19.1% to 13.4%) but increased among patients with acute respiratory failure receiving invasive mechanical ventilation (7.9% to 9.8%; p value for all trends, < 0.001). Three-to-14-day mortality decreased among patients with septic shock (22.1% to 15.5%), septic shock with acute respiratory failure receiving invasive mechanical ventilation (28.7% to 22.4%) and acute respiratory failure receiving invasive mechanical ventilation (16.8% to 15.0%; p value for all trends, < 0.001). Mortality after 14 days decreased among all groups (septic shock: 12.6% to 6.7%; septic shock with acute respiratory failure receiving invasive mechanical ventilation: 20.3% to 11.3%; and acute respiratory failure receiving invasive mechanical ventilation: 12.7% to 5.8%; p value for all trends, < 0.001). Cox proportional hazard ratio for declining risk in mortality per year (adjusted for patient and hospital characteristics) was 0.96 (95% CI, 0.96-0.96) for septic shock, 0.97 (0.97-0.97) for acute respiratory failure receiving invasive mechanical ventilation and septic shock, and 0.99 (0.99-0.99) for acute respiratory failure receiving invasive mechanical ventilation.
CONCLUSIONS: Septic shock 48-hour, 3-14-day and greater than 14-day mortality declined markedly over two decades; in contrast, patients with acute respiratory failure only experienced marked decreases in greater than 14-day in-hospital mortality rates.
DESIGN: Retrospective cohort study.
SETTING: Agency for Healthcare Research and Quality's Healthcare Cost and Utilization Project's National Inpatient Sample, 1994-2014.
PATIENTS: Hospitalized adults (≥ 18 yr) with International Classification of Diseases, 9th Edition, Clinical Modification codes consistent with septic shock; secondary analysis: adults with International Classification of Diseases, 9th Edition, Clinical Modification codes consistent with acute respiratory failure receiving invasive mechanical ventilation and patients with both septic shock and acute respiratory failure receiving invasive mechanical ventilation.
INTERVENTIONS: None.
MEASUREMENTS AND MAIN RESULTS: From 1994 to 2014, 48-hour mortality rates decreased among patients with septic shock (21.2% to 10.8%) and septic shock with acute respiratory failure receiving invasive mechanical ventilation (19.1% to 13.4%) but increased among patients with acute respiratory failure receiving invasive mechanical ventilation (7.9% to 9.8%; p value for all trends, < 0.001). Three-to-14-day mortality decreased among patients with septic shock (22.1% to 15.5%), septic shock with acute respiratory failure receiving invasive mechanical ventilation (28.7% to 22.4%) and acute respiratory failure receiving invasive mechanical ventilation (16.8% to 15.0%; p value for all trends, < 0.001). Mortality after 14 days decreased among all groups (septic shock: 12.6% to 6.7%; septic shock with acute respiratory failure receiving invasive mechanical ventilation: 20.3% to 11.3%; and acute respiratory failure receiving invasive mechanical ventilation: 12.7% to 5.8%; p value for all trends, < 0.001). Cox proportional hazard ratio for declining risk in mortality per year (adjusted for patient and hospital characteristics) was 0.96 (95% CI, 0.96-0.96) for septic shock, 0.97 (0.97-0.97) for acute respiratory failure receiving invasive mechanical ventilation and septic shock, and 0.99 (0.99-0.99) for acute respiratory failure receiving invasive mechanical ventilation.
CONCLUSIONS: Septic shock 48-hour, 3-14-day and greater than 14-day mortality declined markedly over two decades; in contrast, patients with acute respiratory failure only experienced marked decreases in greater than 14-day in-hospital mortality rates.
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