Predicting diabetic foot ulcer outcomes - differences with PVD

NewsBot · Feb 27, 2008

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Prediction of outcome in individuals with diabetic foot ulcers: focus on the differences between individuals with and without peripheral arterial disease. The EURODIALE Study.
Prompers L, Schaper N, Apelqvist J, Edmonds M, Jude E, Mauricio D, Uccioli L, Urbancic V, Bakker K, Holstein P, Jirkovska A, Piaggesi A, Ragnarson-Tennvall G, Reike H, Spraul M, Van Acker K, Van Baal J, Van Merode F, Ferreira I, Huijberts M.
Diabetologia. 2008 Feb 23 [Epub ahead of print]

AIMS/HYPOTHESIS: Outcome data on individuals with diabetic foot ulcers are scarce, especially in those with peripheral arterial disease (PAD). We therefore examined the clinical characteristics that best predict poor outcome in a large population of diabetic foot ulcer patients and examined whether such predictors differ between patients with and without PAD.

METHODS: Analyses were conducted within the EURODIALE Study, a prospective cohort study of 1,088 diabetic foot ulcer patients across 14 centres in Europe. Multiple logistic regression modelling was used to identify independent predictors of outcome (i.e. non-healing of the foot ulcer).

RESULTS: After 1 year of follow-up, 23% of the patients had not healed. Independent baseline predictors of non-healing in the whole study population were older age, male sex, heart failure, the inability to stand or walk without help, end-stage renal disease, larger ulcer size, peripheral neuropathy and PAD. When analyses were performed according to PAD status, infection emerged as a specific predictor of non-healing in PAD patients only.

CONCLUSIONS/INTERPRETATION: Predictors of healing differ between patients with and without PAD, suggesting that diabetic foot ulcers with or without concomitant PAD should be defined as two separate disease states. The observed negative impact of infection on healing that was confined to patients with PAD needs further investigation.
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Admin2 · Feb 27, 2008

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NewsBot · Jun 2, 2010

Predictive value of routine transcutaneous tissue oxygen tension (tcpO2) measurement for the risk of non-healing and amputation in diabetic foot ulcer patients with non-palpable pedal pulses.
Ladurner R, Küper M, Königsrainer I, Löb S, Wichmann D, Königsrainer A, Coerper S, Beckert S.
Med Sci Monit. 2010 Jun 1;16(6):CR273-277.
Department of General and Transplant Surgery, University Hospital of Tübingen, Germany.
Abstract

Background: It was evaluated whether transcutaneous tissue oxygen tension (tcpO2) measurement, when assessed in daily routine, can be used to predict the risk of non-healing and amputation in diabetic foot ulcer patients with non-palpable pedal pulses.

Material/Methods: Patients were followed up in an outpatient setting according to a comprehensive wound-care protocol. tcpO2 measurements were performed at the dorsum of the forefoot in a standardized setting. Patients were divided into three subgroups according to their initial tcpO2-readings (tcpO2 <20 mmHg, tcpO2 20-40 mmHg, tcpO2 >40 mmHg). Patients with clinical signs of soft tissue infection at the initial presentation were excluded.

Results: One hundred forty-one patients were enrolled. Wounds associated with a tcpO2 reading <20 mmHg demonstrated a significantly decreased probability of healing compared with those associated with a tcpO2 >40 mmHg (p=0.008). In addition, the risks of soft tissue infection (p=0.057) and hospitalization during follow-up (p=0.019) were different among the three groups. The overall amputation rate increased with decreasing tcpO2 (p=0.014) although there was no significant difference for major amputations (p=0.448).

Conclusions: Routine assessment of tcpO2 is suitable as a clinical screening tool for estimating the risk of non-healing in diabetic foot ulcer patients without palpable pedal pulses. However, its predictive value for the risk of amputation remains unclear.
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