Si-Huei Lee1,2, Tzu-Chun Hsu3, Meng-Tse Gabriel Lee3, Christin Chihh-Ting Chao4, Wan-Chien Lee3, Chi-Cheng Lai5, Chien-Chang Lee3,6,7. 1. Department of Physical Medicine and Rehabilitation, Taipei Veteran General Hospital, Taipei, Taiwan. 2. Department of Medicine, College of Medicine, National Yang Ming University, Taipei, Taiwan. 3. Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan. 4. Canberra Hospital, ACT Health, Garran, ACT, Australia. 5. Department of Intensive Care Medicine, Chi Mei Medical Center, Liouying, Tainan, Taiwan. 6. Department of Emergency Medicine, National Taiwan University Hospital Yunlin Branch, Douliou, Taiwan. 7. Department of General Medicine, National Taiwan University Hospital Yunlin Branch, Douliou, Taiwan.
Abstract
OBJECTIVE: We aimed to compare the sepsis incidence, mortality rates, and primary sites of infection among adult, elderly, and octogenarian patients with sepsis. DESIGN: Population-based cohort study. SETTING: The entire health insurance claims data of Taiwan, which enrolled 99.8% of the 23 million Taiwanese population. PATIENTS: Sepsis patients were identified by International Classification of Diseases, 9th Edition, Clinical Modification codes for both infection and organ dysfunction from January 1, 2002, to December 31, 2012. Patients were categorized into three age groups: 1) adults (18-64 yr); 2) elderly (65-84 yr); and 3) oldest old (≥ 85 yr). The 30-day all-cause mortality was verified by a linked national death certificate database. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: From 2002 to 2012, we identified 1,259,578 patients with sepsis, of which 417,328 (33.1%) were adults, 652,618 (51.8%) were elderly, and 189,632 (15.1%) were oldest old. We determined that the incidence of sepsis in the oldest old was 9,414 cases per 100,000 population on 2012, which was 31-fold greater than the adult incidence (303 cases per 100,000 population) and three-fold greater than the elderly incidence (2,908 cases per 100,000 population). Despite the increasing trend in incidence, the mortality decreased by 34% for adults, 24% for elderly, and 22% for oldest old. However, systemic fungal infection was disproportionately increased in oldest old patients (1.76% annual increase) and the elderly patients (1.00% annual increase). CONCLUSION: The incidence of sepsis is disproportionately increased in elderly and oldest old patients. Despite the increasing trend in incidence, the mortality rate in geriatric patients with sepsis has decreased. However, the increased incidence of fungal infections in the geriatric population warrants further attention.
OBJECTIVE: We aimed to compare the sepsis incidence, mortality rates, and primary sites of infection among adult, elderly, and octogenarian patients with sepsis. DESIGN: Population-based cohort study. SETTING: The entire health insurance claims data of Taiwan, which enrolled 99.8% of the 23 million Taiwanese population. PATIENTS: Sepsispatients were identified by International Classification of Diseases, 9th Edition, Clinical Modification codes for both infection and organ dysfunction from January 1, 2002, to December 31, 2012. Patients were categorized into three age groups: 1) adults (18-64 yr); 2) elderly (65-84 yr); and 3) oldest old (≥ 85 yr). The 30-day all-cause mortality was verified by a linked national death certificate database. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: From 2002 to 2012, we identified 1,259,578 patients with sepsis, of which 417,328 (33.1%) were adults, 652,618 (51.8%) were elderly, and 189,632 (15.1%) were oldest old. We determined that the incidence of sepsis in the oldest old was 9,414 cases per 100,000 population on 2012, which was 31-fold greater than the adult incidence (303 cases per 100,000 population) and three-fold greater than the elderly incidence (2,908 cases per 100,000 population). Despite the increasing trend in incidence, the mortality decreased by 34% for adults, 24% for elderly, and 22% for oldest old. However, systemic fungal infection was disproportionately increased in oldest old patients (1.76% annual increase) and the elderly patients (1.00% annual increase). CONCLUSION: The incidence of sepsis is disproportionately increased in elderly and oldest old patients. Despite the increasing trend in incidence, the mortality rate in geriatric patients with sepsis has decreased. However, the increased incidence of fungal infections in the geriatric population warrants further attention.
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