The quality of life of older people is determined by their functional capacity, rather than by the number or type of disease suffered. We analyzed 43 patients over 65 years undergoing major surgery. Longitudinally continued evolution of functional status by analyzing six variables, activities of daily living (ADLs), instrumental activities of daily living (IADL), the get up and walk test, functional reach test of arm, strength of handgrip and walking speed, measured before surgery (baseline measurement) and at 1, 2, 3 and 4 months after discharge. The objectives were to estimate the impact that surgery has on functional status in the elderly, determine how long each of the measurements returned to preoperative values at 4 months follow-up. Recovery curves compared the baseline AIVD, grip strength and hand speed on the fly, between two groups defined by baseline walking speed in slow (< 0.8 m/s) and fast (> 0.8 m/s). The impact of surgery on physical fitness showed a statistically significant decrease in ADL, IADL, and the get up and walk test and walking speed, with variable time recovery beyond convalescence. All return to baseline at 4 months except test walking speed that exceeded the baseline. Functional status can be evaluated quickly and should be included in the preoperative evaluation, since it allows planning strategies to meet the needs and limitations of patients and their families, in the immediate postoperative period.
Keywords: elderly; hand grip strength; preoperative evaluation; walking speed.