Should the 6-minute walk test be stopped if oxyhemoglobin saturation falls below 80%?

AuthorsAfzal, Sumbla
Burge, Angela T.
Lee, Annemarie L.
Bondarenko, Janet
Holland, Anne E.
TypeJournal Article (Original Research)
JournalArchives of Physical Medicine
PubMed ID30130517
Year of Publication2018
URLhttp://ahro.austin.org.au/austinjspui/handle/1/20679
DOI/10.1016/j.apmr.2018.07.426.
AbstractTo 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


< More publications



HEALTHY MALES AND FEMALES WANTED FOR SLEEP STUDYHEALTHY MALES AND FEMALES WANTED FOR SLEEP STUDY

Interested to participate in a study investigating the effect of fatigue on driving performance?

ARIELARIEL

Interstitial lung disease (ILD) is a chronic lung condition that causes stiff lungs and restricts sufferers from taking a deep breath. Exercise in a gym, such as walking or riding a bike, can help make...

Notch monitoring in sleepNOTCH MONITORING IN SLEEP

Sleep apnea is a condition where breathing is abnormal during sleep. There are two main forms of sleep apnea: obstructive and central. For obstructive sleep apnea, breathing is reduced because the airway...

IBAS researcher featured on NHMRC Tracker magazineIBAS RESEARCHER FEATURED ON NHMRC TRACKER MAGAZINE

Prof Anne Holland's research on chronic obstructive pulmonary disease is featured as one of the 10 best research topics in the NHMRC publication, Tracker.

Good sleep more essential than ever during COVID-19GOOD SLEEP MORE ESSENTIAL THAN EVER DURING COVID-19

This Sleep Awareness Week, Austin Health's sleep experts remind us all that sleep is integral to good health, particularly at times when we're under stress.

Professor David Berlowitz receives over 7 million in grantsPROFESSOR DAVID BERLOWITZ RECEIVES OVER 7 MILLION IN GRANTS

University of Melbourne Chair of Physiotherapy at Austin Health, Professor David Berlowitz has had quite a memorable week.

Do you have Spinal cord injury? Tired?  Get treated!DO YOU HAVE SPINAL CORD INJURY? TIRED? GET TREATED!

Melbourne researchers have found that 80 percent of people with quadriplegic spinal injuries have sleep apnoea. It's having a big effect on their lives but they don't know they have it, and they don't know it can be treated.

Institute for Breathing and Sleep

Level 5, Harold Stokes Building, Austin Hospital
145 Studley Road
Heidelberg, Victoria, 3084

(03) 9496 5390

Email Us

Donate