Utilização da safena magna in situ para arterialização do arco venoso do pé / The great saphenous vein in situ for the arterialization of the venous arch of the foot

CONTEXTO: O tratamento da isquemia crítica de membros inferiores sem leito arterial distal pode ser realizado por meio da inversão do fluxo no arco venoso do pé. OBJETIVO: O objetivo deste trabalho foi apresentar a técnica e os resultados obtidos com a arterialização do arco venoso do pé, mantendo a safena magna in situ. MÉTODOS: Dezoito pacientes, dos quais 11 com aterosclerose (AO), 6 com tromboangeíte obliterante (TO) e 1 com trombose de aneurisma de artéria poplítea (TA) foram submetidos ao método. A safena magna in situ foi anastomosada à melhor artéria doadora. O fluxo arterial derivado para o sistema venoso progride por meio da veia cujas válvulas são destruídas. As colaterais da veia safena magna são ligadas desde a anastomose até o maléolo medial, a partir do qual são preservadas. RESULTADOS: Dos pacientes, 10 (55,6 por cento) mantiveram suas extremidades, 5 com AO e 5 com TO; 7 (38,9 por cento) foram amputados, 5 com AO, 1 com TO e 1 com Ta; houve 1 óbito (5,5 por cento). CONCLUSÃO: A inversão do fluxo arterial no sistema venoso do pé deve ser considerada para salvamento de extremidade com isquemia crítica sem leito arterial distal.

BACKGROUND: Critical lower limb ischemia in the absence of a distal arterial bed can be treated by arterialization of the venous arch of the foot. OBJETIVE: The objective of this paper was to present the technique and the results of the arterialization of the venous arch of the foot with the in situ great saphenous vein. METHODS: Eighteen patients, 11 with atherosclerosis (AO), 6 with thromboangiitis obliterans (TO) and 1 with popliteal artery aneurysm thrombosis were submitted to venous arch arterialization. The in situ great saphenous vein was anastomosed to the best donor artery. Arterial flow derived from the venous system progresses through the vein whose valves were destroyed. The collateral vessels of the great saphenous vein are linked from the anastomosis to the medial malleolus and preserved from this point onward. RESULTS: Limb salvage was achieved in 10 (55.6 percent) patients, 5 with AO and 5 with TO. Seven (38.9 percent) patients were amputated, 5 with AO, 1 with TO and 1 with Ta. One (5.5 percent) patient died. CONCLUSION: Arterialization of the venous system of the foot should be considered for the salvage of limbs with critical ischemia in the absence of a distal arterial bed.

Arterialización venosa temporal del pie diabético / Temporal venous arterialization of the diabetic foot

La primera idea que tuvieron los cirujanos (1902) para evitar amputaciones por isquemia fue la de desviar el flujo arterial al sistema venoso por intermedio de una fístula arteriovenosa entre vasos adyacentes, pero con resultados inciertos. Desde entonces se han inventado las simpatecomias, las endarteriectomias y los injertos puentes o bypass y, últimamente, otros avances médicos, quirúrgicos y endovasculares. Sin embargo, en el mundo se siguen haciendo amputaciones, sobre todo en diabéticos. La arterialización de las venas del pie, basada en la vieja idea de la circulación invertida, constituye una esperanza más para estos pacientes ya condenados a la pérdida del miembro. Objetivo: Demostrar que la arterialización de las venas del pie en diabéticos con lesiones neuroisquémicas, generalmente infectadas (pie diabético), es un método eficaz y durable, aunque el puente solo funcione temporalmente. Pacientes y método: De enero de 2000 a febrero de 2009, 59 pacientes con pie diabético fueron tratados por arterialización de las venas del pie...

The first idea of surgeons (1902) to avoid amputations due to ischemia was to deviate the arterial flow to the venous system using an arteriovenous fistula between adjacent vessels; however, the results were unreliable. Since then, sympathectomies, endarterectomies and bypasses have been created, and more recently, other medical, surgical, and endovascular advances have been used. However, amputations continue to be performed worldwide mainly in diabetic patients. The arterialization of the foot veins, based on the old idea of inverted blood flow, is a new possibility for these patients who, otherwise, could lose their limbs. Objective: To demonstrate that arterialization of the foot veins in diabetic patients with neuroischemic lesions, usually infected (diabetic foot), is an effective and long-lasting method, even though the bypass only works temporally. Patients and method: From January 2000 to February 2009, 59 patients with diabetic foot were threated by means of arterialization of the foot veins. An early death was not included in the analysis. Of the 58 remaining patients, 44 were male and 14 were female. Their mean age was 71 years old: (53-91 years). Fifty-four of them were classified as being Fontaine IV and four were IIIB...