Oxygen saturation as a marker for admission or relapse with acute bronchospasm

Jerris R. Hedges, James T. Amsterdam, David J. Cionni, Steven Embry

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Oxygen saturation (SaO2) as measured by pulse oximetry was evaluated as a means of complementing or supplementing peak expiratory flow rate (PEFR) for early identification of the adult patient needing prolonged therapy for acute bronchospasm. SaO2 was recorded at baseline and at the time of peak drop after initial bronchodilator therapy for 28 patient visits. PEFR was recorded at baseline and at 15 minutes after initial bronchodilator therapy. Potential admission criteria based on these parameters were compared to patients actually admitted or returned within 72 hours (prematurely discharged). Mean patient age was 36 ± 16.8 years. Mean baseline SaO2 was 95.4 ± 2.3% (92 to 100%) and SaO2 at the peak drop after the first bronchodilator therapy was 91.9 ± 3.0% (86 to 97%). Of the criteria evaluated, the following had a significant correlation with admission or premature discharge: baseline PEFR ≤ 100 L/min (P = .017); PEFR after first bronchodilator therapy ≤ 160 L/min (P < .0004); the combination of a baseline PEFR ≤ 100 L/min with an improvement in PEFR ≤ 100 L/min (P < .0003); and the combination of baseline SaO2 ≤ 95% with an improvement in PEFR ≤ 100 L/min (P = .0017). As isolated variables, SaO2 at baseline and SaO2 at peak drop following bronchodilator therapy were not useful predictors of outcome, although patients severely hypoxemic at presentation were not evaluated.

    Original languageEnglish (US)
    Pages (from-to)196-200
    Number of pages5
    JournalAmerican Journal of Emergency Medicine
    Volume5
    Issue number3
    DOIs
    StatePublished - Jan 1 1987

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    Peak Expiratory Flow Rate
    Bronchial Spasm
    Bronchodilator Agents
    Oxygen
    Recurrence
    Therapeutics
    Oximetry

    All Science Journal Classification (ASJC) codes

    • Emergency Medicine

    Cite this

    Oxygen saturation as a marker for admission or relapse with acute bronchospasm. / Hedges, Jerris R.; Amsterdam, James T.; Cionni, David J.; Embry, Steven.

    In: American Journal of Emergency Medicine, Vol. 5, No. 3, 01.01.1987, p. 196-200.

    Research output: Contribution to journalArticle

    Hedges, Jerris R. ; Amsterdam, James T. ; Cionni, David J. ; Embry, Steven. / Oxygen saturation as a marker for admission or relapse with acute bronchospasm. In: American Journal of Emergency Medicine. 1987 ; Vol. 5, No. 3. pp. 196-200.
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    abstract = "Oxygen saturation (SaO2) as measured by pulse oximetry was evaluated as a means of complementing or supplementing peak expiratory flow rate (PEFR) for early identification of the adult patient needing prolonged therapy for acute bronchospasm. SaO2 was recorded at baseline and at the time of peak drop after initial bronchodilator therapy for 28 patient visits. PEFR was recorded at baseline and at 15 minutes after initial bronchodilator therapy. Potential admission criteria based on these parameters were compared to patients actually admitted or returned within 72 hours (prematurely discharged). Mean patient age was 36 ± 16.8 years. Mean baseline SaO2 was 95.4 ± 2.3{\%} (92 to 100{\%}) and SaO2 at the peak drop after the first bronchodilator therapy was 91.9 ± 3.0{\%} (86 to 97{\%}). Of the criteria evaluated, the following had a significant correlation with admission or premature discharge: baseline PEFR ≤ 100 L/min (P = .017); PEFR after first bronchodilator therapy ≤ 160 L/min (P < .0004); the combination of a baseline PEFR ≤ 100 L/min with an improvement in PEFR ≤ 100 L/min (P < .0003); and the combination of baseline SaO2 ≤ 95{\%} with an improvement in PEFR ≤ 100 L/min (P = .0017). As isolated variables, SaO2 at baseline and SaO2 at peak drop following bronchodilator therapy were not useful predictors of outcome, although patients severely hypoxemic at presentation were not evaluated.",
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