Key result
Elective cardiac patients walk up to ~171 fewer meters on the 6MWT vs reference populations.
Why the study?
Preoperative cardiorespiratory fitness may influence recovery after cardiac procedures, but fitness levels across patients awaiting different elective cardiac procedures compared with reference populations were not well characterized.
Do patients scheduled for elective cardiac procedures have lower cardiorespiratory fitness compared to a population-based sample of adults?
Cross-Sectional (n=234)
No
Do patients scheduled for elective cardiac procedures have lower cardiorespiratory fitness compared to a population-based sample of adults?
p-value: p=<0.001
Patients scheduled for elective cardiac procedures, particularly CABG, have significantly lower cardiorespiratory fitness compared to the general population, highlighting a potential need for targeted preoperative rehabilitation.
Patients awaiting elective cardiac procedures show reduced fitness; this Level 4 cross-sectional data leaves open whether preoperative rehab improves outcomes.
Preoperative cardiorespiratory fitness may influence the recovery after cardiac procedure. The aim of this study was to investigate the cardiorespiratory fitness of patients scheduled for elective cardiac procedures, using a six-minute walk test, and compare the results with a population-based sample of Finnish adults. Patients (n=234) awaiting percutaneous coronary intervention or coronary angiography, coronary artery bypass grafting, aortic valve replacement or mitral valve surgery performed the six-minute walk test. VO2max was calculated based on the walk test. The patients were compared to a population-based sample of 60–69-year-old Finnish adults from the FinFit2017 study. The mean six-minute walk test distances (meters) and VO2max (ml/kg/min) of the patient groups were: 452±73 and 24.3±6.9 (coronary artery bypass grafting), 499±84 and 27.6±7.2 (aortic valve replacement), 496±85 and 27.4±7.3 (mitral valve surgery), and 519±90 and 27.3±6.9 (percutaneous coronary intervention or coronary angiography). The population-based sample had significantly greater walk test distance (623±81) and VO2max (31.7±6.1) than the four patient groups (all p-values<0.001). All patient groups had lower cardiorespiratory fitness than the reference population of 60–69-year-old Finnish adults. Particularly the coronary artery bypass grafting group had a low cardiorespiratory fitness, and therefore might be prone to complications and challenging rehabilitation after the operation.
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Vasankari et al. (2023) conducted a cross-sectional in Elective cardiac procedures (CABG, AVR, MVS, PCI-CA) (n=234). Elective cardiac procedure vs. Population-based sample of 60-69-year-old Finnish adults (FinFit2017) was evaluated on 6-minute walk test distance (meters) (p=<0.001). Patients scheduled for elective cardiac procedures had significantly lower cardiorespiratory fitness, with mean 6-minute walk test distances ranging from 452 to 519 meters compared to 623 meters in a reference population.
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