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Revista médica de Chile

versión impresa ISSN 0034-9887


VARGAS, Javiera et al. Assessment of two frailty scales for the preoperative period. Rev. méd. Chile [online]. 2020, vol.148, n.3, pp.311-319. ISSN 0034-9887.


In the perioperative context, a frailty evaluation scale must consider certain characteristics such as validation, execution speed, simplicity, the capacity to measure multiple dimensions and not being dependent on a cognitive or physical test that could not be performed prior to surgery. The test should select patients that could benefit from interventions aimed to improve their postoperative outcomes.


To validate two frailty evaluation scales for the perioperative period.

Material and Methods:

The Risk Analysis Index with local modifications (RAI-M) were applied to 201 patients aged 73 ± 7 years (49% women) and the Edmonton frailty scale were applied in 151 patients aged 73 ± 7 years (49% women) in the preoperative period. Their results were compared with the Rockwood frailty index.


The Edmonton frail scale showed adequate psychometric properties and assessed multiple dimensions through 8 of the 11 original questions, achieving a discrimination power over 80% compared to the Rockwood Index. The RAI- M, demonstrated solid psychometric properties with a tool that examines 4 dimensions of frailty through 15 questions and reviewing the presence of 11 medical comorbidities. This scale had a discrimination power greater than 85% and it was significantly associated with prolongation of the planned hospital stay and mortality.


RAI-M is a short and easily administered scale, useful to detect frailty in the preoperative period.

Palabras clave : Anesthesia; Frail Elderly; Perioperative Care; Perioperative Period; Risk Assessment.

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