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<p>Although emergency department length of stay (ED-LOS) is an important parameter of ED performance, its relationship with patient outcomes remains unclear. This study investigated the association between prolonged ED-LOS and clinical outcomes, and explored disease-specific effects. From January, 2016 to September, 2022, adult patients admitted to the internal medicine wards via the ED of a tertiary hospital were retrospectively categorized into two groups: prolonged ED-LOS group (&gt; 48&#xa0;h) and reference group (≤ 48&#xa0;h). The primary outcomes included hospital-LOS, in-hospital mortality, 30-day mortality, and intensive care unit (ICU)-LOS. Of a total of 30,753 eligible patients, 4554 (14.8%) had prolonged ED-LOS. Factors associated with prolonged ED-LOS included older patients and those with higher Charlson comorbidity index scores (CCIS). In-hospital and 30-day all-cause mortality were 259 (6%) and 296 (7%), respectively, in the prolonged ED-LOS group versus 2021 (8%) and 2066 (8%), respectively, in the reference group. The hospital-LOS and ICU-LOS were 10.8 ± 9.9 and 9.3 ± 7.4&#xa0;days, respectively, in the prolonged ED-LOS versus 10.9 ± 11.9 and 7.7 ± 8.2&#xa0;days, respectively, in the reference group. Compared to the reference group, patients with prolonged ED-LOS had lower in-hospital and 30-day mortality, and longer ICU-LOS. Subgroup analysis revealed lower mortality rate and shorter hospital-LOS in the Chest medicine ward. Prolonged ED-LOS (&gt; 48&#xa0;h) was associated with longer ICU-LOS, it was paradoxically linked to lower mortality rates. The choice of optimal cut-off timing for assessing ED efficiency and specific patient populations who may benefit from expedited hospitalization remain to be elucidated. </p>

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Association between emergency department length of stay and outcomes among patients admitted to internal medicine wards

  • 期刊论文

  • 发表日期：

    2025年7月26日

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  • Chun-Yen Chen,
  • Renin Chang,
  • Chun-Hao Yin,
  • Jin-Shuen Chen,
  • Yao-Shen Chen

摘要

Although emergency department length of stay (ED-LOS) is an important parameter of ED performance, its relationship with patient outcomes remains unclear. This study investigated the association between prolonged ED-LOS and clinical outcomes, and explored disease-specific effects. From January, 2016 to September, 2022, adult patients admitted to the internal medicine wards via the ED of a tertiary hospital were retrospectively categorized into two groups: prolonged ED-LOS group (> 48 h) and reference group (≤ 48 h). The primary outcomes included hospital-LOS, in-hospital mortality, 30-day mortality, and intensive care unit (ICU)-LOS. Of a total of 30,753 eligible patients, 4554 (14.8%) had prolonged ED-LOS. Factors associated with prolonged ED-LOS included older patients and those with higher Charlson comorbidity index scores (CCIS). In-hospital and 30-day all-cause mortality were 259 (6%) and 296 (7%), respectively, in the prolonged ED-LOS group versus 2021 (8%) and 2066 (8%), respectively, in the reference group. The hospital-LOS and ICU-LOS were 10.8 ± 9.9 and 9.3 ± 7.4 days, respectively, in the prolonged ED-LOS versus 10.9 ± 11.9 and 7.7 ± 8.2 days, respectively, in the reference group. Compared to the reference group, patients with prolonged ED-LOS had lower in-hospital and 30-day mortality, and longer ICU-LOS. Subgroup analysis revealed lower mortality rate and shorter hospital-LOS in the Chest medicine ward. Prolonged ED-LOS (> 48 h) was associated with longer ICU-LOS, it was paradoxically linked to lower mortality rates. The choice of optimal cut-off timing for assessing ED efficiency and specific patient populations who may benefit from expedited hospitalization remain to be elucidated.