Research ArticleORIGINAL RESEARCH
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Evaluation of Hospital Admission Status for Emergency Department Patients Seen for Chronic Obstructive Pulmonary Disease Exacerbation: A Retrospective Observational Study

Hayden L. Smith and Corey S. Ellis
Ochsner Journal March 2021, 21 (1) 19-24; DOI: https://doi.org/10.31486/toj.19.0121

Article Figures & Data

Figures

  • Figure.
    Figure.

    Receiver operator characteristic curve for the set of nonzero coefficients selected via adaptive least absolute shrinkage and selection operator (adaLASSO) model for variables associated with hospital admission status in patients seen in the emergency department (ED) for chronic obstructive pulmonary disease (COPD) exacerbation (n=1,165). Selected variables included heart rate, blood oxygen saturation, depression, anxiety, age, and prior ED encounter for COPD exacerbation during study period.

Tables

  • Table 1.

    Characteristics of Emergency Department (ED) Encounters for Chronic Obstructive Pulmonary Disease Exacerbation, n=1,165

    VariableValue
    Hospital admission635 (54.5)
    Age, years, mean ± SD67 ±13
    Male476 (40.9)
    White race1,095 (94.0)
    Heart rate, bpm, mean ± SDa94 ± 19
    Respiratory rate, breaths per min, mean ± SDa22 ± 5
    Blood oxygen saturation, %, mean ± SDa93 ± 5
    Documented primary care provider1,058 (90.8)
    Prior ED encounters for exacerbationb
     0857 (73.6)
     1191 (16.4)
     257 (4.9)
     ≥360 (5.1)
     Mean ± SD0.5 ± 1.4
    Weekday arrival860 (73.8)
    Clinic or urgent care clinic open784 (67.3)
    Secondary diagnosis of depression149 (12.8)
    Secondary diagnosis of anxiety149 (12.8)

    • ↵aInitial ED values.

    • ↵bPrior ED encounter within study period at any of the 3 study hospitals.

    • Note: Data are presented as n (%) unless otherwise indicated.

  • Table 2.

    Characteristics of Emergency Department (ED) Encounters for Chronic Obstructive Pulmonary Disease Exacerbation Stratified by Admission Status, n=1,165

    VariableAdmitted to Hospital n=635 (54.5)Not Admitted to Hospital n=530 (45.5)
    Age, years, mean ± SD69 ± 1265 ± 13
    Male245 (38.6)231 (43.6)
    White race610 (96.1)485 (91.5)
    Heart rate, bpm, mean ± SDa97 ± 2091 ± 17
    Respiratory rate, breaths per min, mean ± SDa23 ± 622 ± 5
    Blood oxygen saturation, %, mean ± SDa92 ± 694 ± 4
    Documented primary care provider604 (95.1)454 (85.7)
    Prior ED encounters for exacerbationb
     0489 (77.0)368 (69.4)
     13 (0.5)2 (0.4)
     222 (3.5)35 (6.6)
     ≥3121 (19.1)125 (23.6)
     Mean ± SD0.5 ± 1.50.6 ± 1.3
    Weekday arrival489 (77.0)371 (70.0)
    Clinic or urgent care clinic open444 (69.9)340 (64.2)
    Secondary diagnosis of depression131 (20.6)18 (3.4)
    Secondary diagnosis of anxiety121 (19.1)28 (5.3)

    • ↵aInitial ED values.

    • ↵bPrior ED encounter within study period at any of the 3 study hospitals.

    • Note: Data are presented as n (%) unless otherwise indicated.

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