[Prognostic factors of mortality one year after a hip fragility fracture. Anoia hip study]

Abstract

Introduction: Most of the patients who had a hip fragility fracture are characterized by advanced age, frailty, multimorbidity and high mortality rate into the first year. Our aim is to describe the prognostic factors of mortality one year after a hip fragility fracture.

Material and methods: Observational prospective study. During the study period we included patients older than 69 years with hip fragility fracture who were admitted to the Acute Geriatric Unit.

Results: We have followed 364 patients, 100 of them died (27.5%). The independent prognostic factors of mortality one year after a hip fragility fracture had been: have a less basis score in Lawton and Brody Scale 0.603 (0.505-0.721) (p< 0.001); have a higher score in Charlson Comorbidity Index 2.332 (1.308-4.157) p = 0.04); have a surgical waiting time ≥ 3 days 3.013 (1.330-6.829) p = 0.008); finding hydroelectrolytic disorders and/or deterioration of glomerular filtration 1.212 (1.017-1.444) p = 0.031) during hospital stay; discriminatory capacity of the area under the curve (AUC) (± 95%): 0.888 (0.880-0.891).

Conclusions: Prognostic predictors of mortality at one year after a hip fragility fracture are those variables that reflect a worse state of health, complications during hospital stay and a longer surgical waiting time.

Keywords: Acute Geriatric Unit; Adulto mayor; Elderly; Factores pronósticos; Fractura de cadera; Hip fracture; Prognostic factors; Unidad Geriátrica Agudos.