Author(s): Alexandrescu V, Hubermont G, Philips Y, Guillaumie B, Ngongang Ch,
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Abstract INTRODUCTION: This study aims to assess the patency, the clinical success and the limb-salvage rates of combined subintimal (SA) coupled to endoluminal angioplasty (EA) as the initial treatment of ischaemic inferior-limb ulcers in diabetic patients and to study the influence of other concurrent factors in the tissue-healing process. MATERIALS AND METHOD: Since September 2002 until December 2007, a consecutive series of 176 limbs with manifold ischaemic wounds in 161 diabetic patients were treated by associated multilevel angioplasties in a multidisciplinary 'diabetic-foot team' (a third-line diabetic-care institution integrating two departmental hospitals). There were 98 associated SA with EA procedures, 26 re-vascularisations by single SA technique and 52 others including selective multilevel EAs that were retrospectively reviewed. The mean follow-up period was 22.1 months (in the range of 1-50 months) by clinical and duplex evaluation (every 6 months). RESULTS: The initial technical success was noted in 149 limbs (84\%). For the single or associated SA procedures, 102 of 124 procedures were successful (82\%) and 145 of 150 of the miscellaneous EAs (96\%) evinced an equally favourable outcome. The 27 initially failed endovascular procedures (22 SA and five EA) required 16 surgical re-vascularisation, eight adjuvant endovascular procedures besides three amputations. A total of 21 secondary and five tertiary angioplasties were equally necessary during the entire follow-up period of these patients. The 30-day survival rate was 99\% (one patient died from myocardial infarction). In a intention-to-treat analysis, the cumulative primary and secondary patencies at 12, 24, 36 and 48 months were 62\%, 45\%, 41\% and 38\%, together with 80\%, 69\%, 66\% and 66\%, respectively. The aggregate clinical success rates at the same intervals were 86\%, 77\%, 70\% and 69\%, while the corresponding limb-salvage proportions showed 89\%, 83\%, 80\% and 80\%, respectively. The primary patency was negatively affected at 1 and 4 years by the length of the occluded segment (>10 cm) and the end-stage renal disease (ESRD) (p<0.0001). The limb-salvage rates were unfavourably influenced at the same periods by the extent of tissue defects (>3 cm), the ESRD and the presence of osteomyelitis. In addition, at 4 years, the age (>70 years), the accompanying peripheral neuropathy, the bedridden status and the presence of cardiac failure (left ventricular ejection fraction (LVEF)<30\%) appeared equally as negative predictors (p<0.0001) for wound healing and limb rescue. CONCLUSION: Primary angioplasty represents a low aggressive and efficacious method to improve the healing process in diabetic ischaemic ulcers. However, beyond appropriate re-vascularisation, even repetitive if necessary, achieving satisfactory limb-salvage rates probably implies a multidisciplinary control of the presenting risk factors for wound healing as well.
This article was published in Eur J Vasc Endovasc Surg
and referenced in Journal of Diabetes & Metabolism