The 6-minute walking test and all-cause mortality in patients undergoing a post-cardiac surgery rehabilitation program
Key result
A pre-discharge 6-minute walking test distance was a significant predictor of all-cause mortality in post-cardiac surgery patients (adjusted HR 0.97; 95% CI 0.95-0.99; p=0.0038).
Why the study?
Does pre-discharge 6-minute walking test performance predict all-cause mortality in patients undergoing post-cardiac surgery rehabilitation?
Population
313 patients admitted to a rehabilitation institute following cardiac surgery, mean age 66 ± 11 years, 23%…
Design
Cohort
Follow-up
median 23 months
Authors
Discussion
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Implication
May refine post-cardiac surgery risk stratification; hypothesis-generating and should not yet change practice.
Study Design
Type
Cohort (n=313)
Multicenter
No
Structured PICO
Does pre-discharge 6-minute walking test performance predict all-cause mortality in patients undergoing post-cardiac surgery rehabilitation?
P
Population
313 patients (mean age 66, 23% female) admitted to a rehabilitation institute following cardiac surgery, followed for a median of 23 months.
E
Exposure
Pre-discharge 6-minute walking test (6mWT) performance (expressed as % of theoretical predicted values)
O
Outcome
All-cause mortalityhard clinical
Main Result
Hazard Ratio: 0.97 (95% CI 0.95–0.99)
Absolute Event Rate: 9% vs 44%
p-value: p=0.0038
The pre-discharge 6-minute walking test is a significant predictor of all-cause mortality in patients completing post-cardiac surgery rehabilitation.
Cite This Study
Rovere et al. (2013) conducted a cohort in Post-cardiac surgery (n=313). Pre-discharge 6-minute walking test (6mWT) vs. Did not perform 6mWT was evaluated on All-cause mortality (HR 0.97, 95% CI 0.95-0.99, p=0.0038). A pre-discharge 6-minute walking test distance was a significant predictor of all-cause mortality in post-cardiac surgery patients (adjusted HR 0.97; 95% CI 0.95-0.99; p=0.0038).