Assessing need for long-term oxygen therapy: a comparison of conventional evaluation and measures of ambulatory oximetry monitoring.
BACKGROUND: Appropriate identification of hypoxic patients with chronic obstructive pulmonary disease (COPD) is important because of the demonstrated survival benefit of long-term oxygen therapy (LTOT) and its associated cost. Resting oxygen saturation (measured via pulse oximetry [S(pO2)]) and lowe...
| Publicado en: | Respiratory Care Vol. 48; no. 2; pp. 115 - 120 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Mary Ann Liebert, Inc.
2003 Feb
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106838898&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106838898 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00201324 4GG jtl: Respiratory Care issn: 00201324 maglogo: N pubinfo: dt: 2003 Feb vid: 48 iid: 2 pid: 1365 pub: Mary Ann Liebert, Inc. place: New Rochelle, New York artinfo: ui: 106838898 106838898 2003082072 NLM12556251 106838898 ppf: 115 ppct: 5 formats: tig: atl: Assessing need for long-term oxygen therapy: a comparison of conventional evaluation and measures of ambulatory oximetry monitoring. aug: au: Russell KM Ayo DS Branca P Rogers JT Rodriguez M Light RW affil: Dept of Pulmonary Medicine, Saint Thomas Hospital and Vanderbilt University, Nashville, TN sug: subj: Ambulatory Care Lung Diseases, Obstructive Oxygen Saturation Evaluation Oxygen Therapy Pulse Oximetry Aged Aged, 80 and Over Anoxemia Clinical Research Comparative Studies Convenience Sample Correlation Coefficient Data Analysis Software Descriptive Research Descriptive Statistics Exercise Test Female Hospitals Linear Regression Male Middle Age Outpatients Oximeters Prospective Studies Sampling Error Tennessee Human Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Female Male ab: BACKGROUND: Appropriate identification of hypoxic patients with chronic obstructive pulmonary disease (COPD) is important because of the demonstrated survival benefit of long-term oxygen therapy (LTOT) and its associated cost. Resting oxygen saturation (measured via pulse oximetry [S(pO2)]) and lowest exercise S(pO2) (during a 6-min walk test) is the standard method of determining LTOT requirements, but that method does not measure the patient's oxygenation during sleep or activities of daily living. We hypothesized that values obtained via the standard method would correlate poorly with values obtained via ambulatory oximetry monitoring. METHODS: We conducted a prospective, cohort study in an out-patient pulmonary clinic in a tertiary care referral center, with 20 stable COPD patients who were being evaluated for LTOT with conventional evaluation versus 16-24 hours of ambulatory oximetry. RESULTS: The resting S(pO2) did not correlate well with mean ambulatory S(pO2) (r = 0.64) or the percent of monitored time spent with S(pO2) < 88% (r = 0.49). The lowest exercise S(pO2) also did not predict mean ambulatory S(pO2) (r = 0.39) or the percent of monitored time spent with S(pO2) < 88% (r = 0.32). Conventional evaluation overestimated LTOT requirements with 16 of the 20 patients developing an S(pO2) < 88%, most of them with exercise only (ie, most had normal resting S(pO2)). With ambulatory monitoring, however, only 3 of the 16 patients spent > 10% of the monitored time with S(pO2) < 88%. CONCLUSION: There was a poor relationship between the conventional oxygenation assessment method and continuous ambulatory oximetry during LTOT screening with COPD patients. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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