Development of the Tardivo Algorithm to Predict Amputation Risk of Diabetic Foot.
Diabetes is a chronic disease that affects almost 19% of the elderly population in Brazil and similar percentages around the world. Amputation of lower limbs in diabetic patients who present foot complications is a common occurrence with a significant reduction of life quality, and heavy costs on the health system. Unfortunately, there is no easy protocol to define the conditions that should be considered to proceed to amputation. The main objective of the present study is to create a simple prognostic score to evaluate the diabetic foot, which is called Tardivo Algorithm. Calculation of the score is based on three main factors: Wagner classification, signs of peripheral arterial disease (PAD), which is evaluated by using Peripheral Arterial Disease Classification, and the location of ulcers. The final score is obtained by multiplying the value of the individual factors. Patients with good peripheral vascularization received a value of 1, while clinical signs of ischemia received a value of 2 (PAD 2). Ulcer location was defined as forefoot, midfoot and hind foot. The conservative treatment used in patients with scores below 12 was based on a recently developed Photodynamic Therapy (PDT) protocol. 85.5% of these patients presented a good outcome and avoided amputation. The results showed that scores 12 or higher represented a significantly higher probability of amputation (Odds ratio and logistic regression-IC 95%, 12.2-1886.5). The Tardivo algorithm is a simple prognostic score for the diabetic foot, easily accessible by physicians. It helps to determine the amputation risk and the best treatment, whether it is conservative or surgical management.
Faculdade de Medicina do ABC, Santo Andre, SP, Brazil; Center for the treatment of diabetic feet-Faculdade de Medicina do ABC, Santo Andre, SP, Brazil.
João Paulo
JP
Tardivo
Universidade de São Paulo, Departamento de Bioquímica, Instituto de Quimica, São Paulo, SP, Brazil.
Maurício S
MS
Baptista
Faculdade de Medicina do ABC, Santo Andre, SP, Brazil.
João Antonio
JA
Correa
Faculdade de Medicina do ABC, Santo Andre, SP, Brazil.
Fernando
F
Adami
Faculdade de Medicina do ABC, Santo Andre, SP, Brazil.
Maria Aparecida Silva
MA
Pinhal
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D000671:Amputation, Surgical / Q000706:statistics & numerical data*; D017719:Diabetic Foot / Q000473:pathology* / Q000601:surgery*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012307:Risk Factors