Purpose The Duke Activity Status Index (DASI), a patient-administered questionnaire, is used to quantify functional capac- ity in patients undergoing cancer surgery. Methods This retrospective cohort study assessed whether the DASI was accurate in predicting peak oxygen consumption (pVO ) that was objectively measured using cardiopulmonary exercise testing (CPET) in 43 consecutive patients scheduled for elective major cancer surgery at a tertiary cancer centre. The primary outcome measured the limits of agreement between DASI-predicted pVO and actual measured pVO . 2 2 Results The study population was elderly (median 63 years, interquartile range 18), 58% were male, with the majority having intraabdominal cancer surgery. Although the DASI scores were statistically related to the measured pVO (N = 43, 2 − 1 − 1 − 1 − 1 adjusted R = 0.20, p = 0.002), both the bias (8 ml k g min ) and 95% limits of agreement (19.5 to − 3.4 ml k g min ) between the predicted and measured pV O were large. Using some of the individual components, recalibrating the intercept and regression coefficient of the total DASI score did not substantially improve its ability to predict the measured pVO . Conclusion In summary, both the limits of agreement
Journal of Anesthesia – Springer Journals
Published: May 29, 2018
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