Frecuencia de Amputaciones y Sobrevida en Pacientes Hospitalizados con el Diagnóstico de Pie Diabético entre 1985-2000 en el Hospital Clínico de la Universidad de Chile

Authors

  • Juan C. Rodríguez T. Hospital Clínico Universidad de Chile. Sección de Endocrinología
  • Andrea Ruiz de Arechavaleta C. Hospital Clínico Universidad de Chile. Sección de Endocrinología
  • José M. Saavedra S. Hospital Clínico Universidad de Chile. Sección de Endocrinología
  • Álvaro Reyes P. Hospital Clínico Universidad de Chile. Oficina de Apoyo a la Investigación Clínica
  • Verónica Araya Q. Hospital Clínico Universidad de Chile. Sección de Endocrinología

Abstract

The diabetic foot is the main cause of amputation and mortality in diabetic patients. Aim: To determine the frequency of lower extremity amputations and clinical features in patients with the diagnosis of diabetic foot assisted at the University of Chile Clinical Hospital between 1985-2000 to determine risks factors and mortality after the discharge. Patients and Method: Analysis of patient records and obtainment of the date and cause of death from the National Register of Citizens. Results: Of 278 patients 193 patients (69.4%) underwent an amputation. The anatomic level was: 46% toe; 20% transmetatharsal; 17% under the knee and 17% over the knee. Risk factors for amputation were: history of amputation (odds ratio [OR] 1.95, 95% IC 1.1-3.4); low lymphocytes count ([OR] 0.96, 0.93-0.98); high eritro sedimentation rate ([OR] 1.012, 1.0044-1.02) and retinopathy ([OR] 4.4, 2.2-9.1). Longer hospitalizations were observed in amputee patients (25±22 vs 15±13 days). A similar frequency of amputations was observed between 1985-1994 and 1995-2000 periods. A 35% of amputee patients and 52% of non amputee patients died in a mean of 3.34 years after the event (range 0-15.5 y 0-11.8 respectively). Among non amputee patients the main cause of death was cardiovascular disease and infectious processes were the main cause in amputee patients. Conclusions: A high frequency of amputations because diabetic foot is still observed in our diabetic patients that is associated to longer hospitalizations. The complicated diabetic foot determines a high mortality before 5 years of the event.

Keywords:

Amputación Quirúrgica, Pie Diabético, Complicaciones de la Diabetes, Análisis de Supervivencia, Chile