| Authors | Afzal, Sumbla Burge, Angela T. Lee, Annemarie L. Bondarenko, Janet Holland, Anne E. |
|---|---|
| Type | Journal Article (Original Research) |
| Journal | Archives of Physical Medicine |
| PubMed ID | 30130517 |
| Year of Publication | 2018 |
| URL | http://ahro.austin.org.au/austinjspui/handle/1/20679 |
| DOI | /10.1016/j.apmr.2018.07.426. |
| Abstract | To examine the occurrence of adverse events in patients undergoing assessment for pulmonary rehabilitation when a 6-minute walk test (6MWT) continues despite desaturation below 80%. Objective: To examine the occurrence of adverse events in patients undergoing assessment for pulmonary rehabilitation when a 6-minute walk test (6MWT) continues despite desaturation below 80%. Design: Retrospective audit following REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) Statement. Setting: Large teaching hospital. Participants: All patients assessed for pulmonary rehabilitation (September 2005 to January 2016). Interventions: The standardized tests were conducted by experienced cardiorespiratory physiotherapists. Oxyhemoglobin saturation was monitored continuously using a pulse oximeter (lowest value used for analysis). Medical records were reviewed, and adverse events defined as tachycardia, bradycardia, chest pain or other sign/symptom necessitating cessation. Main outcome measure: 6MWT. Results: Data from 672 walk tests were included (55% men, mean age 69 (standard deviation 11) years) with mean distance 369 (124) meters. The main diagnoses were chronic obstructive pulmonary disease (70%), interstitial lung disease (14%) and bronchiectasis (8%). Sixty individuals (11%) recorded desaturation below 80% without adverse events. Two adverse events were recorded during tests without desaturation; in one instance, chest pain with no evidence of cardiorespiratory compromise and in another, the patient stopped due to concern regarding blood sugar levels (11.5 mmol/L when tested). Independent predictors of desaturation to less than 80% were resting oxyhemoglobin saturation < 95% (odds ratio 3.82, 95% confidence interval 2.06 to 7.08) and a diagnosis of interstitial lung disease or pulmonary arterial hypertension (OR 5.24, 2.59 to 10.58). Conclusions: This study found that desaturation to less than 80% during a 6MWT was not associated with adverse events in a large cohort of patients referred to pulmonary rehabilitation and assessed by experienced physiotherapists, suggesting that test cessation due to desaturation in stable patients may be unwarranted. |
http://www.ibas.org.au/what-we-do/publications/3872994
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