Acute Lower Limb Ischemia in COVID-19 Patient with Delayed Presentation

Thromboembolism is a common complication of SARS-CoV-2, which generally involves venous thromboembolism, although there have been reported cases of arterial thrombosis affecting cerebral, coronary, and visceral arteries, as well as arteries in the extremities. We discuss a case of a 45-year-old diabetic man with COVID-19 who developed late-onset acute lower limb ischemia.

Spot Stenting Combined With False Lumen Endovascular Occlusive Repair for Post-dissection Abdominal Aortic Aneurysm

Purpose: To introduce a new spot stenting, combined with a false lumen endovascular occlusive repair (SS-FLEVOR) technique for treating post-dissection abdominal aortic aneurysms. Technique: This technique is demonstrated in a 74-year-old man who received an initial thoracic endovascular aortic repair 7 years ago and suffered from distal aortic expansion during the follow-up session. All the tears located more than 15 mm away from the orifice of visceral arteries were excluded by spot stenting in the aortic true lumen. Then, a compliant stent-graft was implanted in the false lumen to seal the tears near the visceral arteries orifice from the outside. In addition, coils were deployed to block the potential backflow from the intercostal arteries and to induce false lumen thrombosis. Moreover, visceral arteries originated from false lumen were repaired by covered-stents implanted from the true lumen. The distal iliac arteries were sealed either with iliac extensions or cover-stents. This new technique has been applied in 5 patients, resulting in 100% technical success and encouraging intermediate outcomes. Conclusion: SS-FLEVOR is a feasible and safe technique to promote false lumen thrombosis in selected cases.

Visceral pseudoaneurysms and the role of endovascular treatment – a case report

Introduction: Visceral pseudoaneurysms are pathological dilations of the visceral arteries and/or their branches. They are a rare entity but with devastating consequences given their high potential for rupture and hemorrhage. The evolution of endovascular techniques has changed the paradigm in the treatment of this entity, making it the preferred option for the elective treatment of visceral pseudoaneurysms. Clinical case: The authors described the case of a pancreatic pseudoaneurysm in a young male patient, with past medical history of chronic pancreatitis and pancreatic pseudocyst, marked smoking and alcoholic habits, which presented with an abdominal pain and a drop in hemoglobin. After discussing the case with the Vascular Surgery department, it was decided towards an endovascular treatment given the patient's clinical stability and appropriate anatomical location for the proposed intervention. Coil embolization via humeral artery was performed with immediate angiographic success, and clinical, analytical and imaging improvement in the postoperative period. Conclusion: In addition to open surgical repair and laparoscopic surgery, there are also endovascular procedures for the treatment of visceral pseudoaneurysms, so the vascular surgeon must be aware with the available strategies, taking into account the patient, the characteristics and location of the visceral pseudoaneurysm.

Sebészi megoldások krónikus multivisceralis arteriás elzáródások esetében

Összefoglaló. Bevezetés: A zsigeri artériák akut elzáródása fulmináns klinikai képpel társul, és az esetek jelentős százalékában gyorsan halálhoz vezet. Ha ezen artériák obliteratív folyamata lassan alakul ki, a zsigeri artériák gazdag kollaterális kapacitása a klinikai tüneteket sokáig elfedi. Az esetek egy részében az anatómiailag közel fekvő renalis artériák obliteratív folyamata, illetve a társuló aortoiliacalis szűkületek és/vagy elzáródások rendkívül szerteágazó klinikai képet okozhatnak. Az átfedések más hasi betegségekkel félrevezetők lehetnek, emiatt késedelmes felismerésük súlyos következményekkel járhat. Előfordulásuk nem gyakori, ismeretük azonban nélkülözhetetlen mind a diagnosztika, mind a megoldás szempontjából. Dolgozatunkban e bonyolult kórkép eseteit tárgyaljuk, és ismertetjük a megoldások lehetőségeit. Summary. Introduction: Acute occlusions of the visceral arteries result in fulminant clinical consequences and without fast and appropriate treatment may lead to fatal outcome. If the obliterative disease has slow progression the huge capacity of the collateral circulation of the visceral arteries may remain free of symptoms at long run. By progression of the obliterative disease and extension to both, the renal arteries and the aortoiliac segment the clinical picture becomes more colourful. Symptoms mimicking other abdominal disorders may easily lead to misdiagnosis and/or unnecessary delay of adequate treatment – finally to organ or life threatening condition. In the present paper we deal with this infrequent, but severe disease in order to recognize it in time, to recommend proper diagnostic workup and propose adequate treatment.

Custom-made fenestrated stent for mycotic aortic aneurysms: a report of two cases

Background Mycotic aortic aneurysm is a rare and potentially life-threatening lesion, and endovascular repair has become increasingly accepted for intervention. Fenestrated endografts are available options to treat aneurysms involving visceral arteries. Here, we first report two patients with mycotic aortic aneurysm involving paraviscereal aorta who were successfully treated with custom-made fenestrated endograft. Case presentation Two patients were presented with mycotic aortic aneurysm. Due to their comorbidities and the involvement of the renal arteries, company-manufactured fenestrated stents were designed. Meanwhile, antibiotic therapy was administrated for 2 months before endovascular repair. Patients improved well without complications. Conclusions Custom-made fenestrated endovascular stent is an effective and feasible alternative solution to mycotic paravisceral aorta aneurysm.

Intraoperative angiography for visceral arteries originating from false lumen

A 70-year-old man had an acute type B aortic dissection 9 years before his admission. The last enhanced computed tomography that was performed revealed an aneurysm that extended from the ascending aorta to the aortic arch, associated with a chronic aortic dissection, which extended from the aortic arch to the left external iliac artery. His visceral arteries originated from the false lumen. We performed a total arch replacement with a frozen elephant trunk in the hybrid operating room. Immediately after the circulatory arrest termination, using intraoperative angiography, we verified that the blood supply to the visceral arteries was patent.

Endovascular treatment with Viabahn stent-grafts for arterial injury and bleeding at the visceral arteries: initial and midterm results

Purpose The purpose of the study is to evaluate the initial and midterm efficacy and safety of endovascular treatment (EVT) using Viabahn stent-graft (SG) for arterial injury and bleeding (AIB) at the visceral arteries. Materials and methods Consecutive patients with visceral AIB who underwent EVT using Viabahn between January 2017 and February 2021 were retrospectively reviewed. Technical success, clinical success, peripheral organ ischemia, peri-procedural complications, bleeding-related mortality, 30-day mortality, neck length, re-bleeding, endoleaks, and patency of the SGs at 1, 3, 6, and 12 months were evaluated. Results EVT using Viabahn was performed in 14 patients (mean age: 68.6 years; 12 males) and 15 arteries. The technical and clinical success rates were 100%. The rates of peripheral organ ischemia, peri-procedural complications, bleeding-related mortality, and 30-day mortality were all 0%. The mean neck length was 9.9 mm. No endoleaks or re-bleeding occurred during the follow-up (mean: 732 days). The SG patency was confirmed after 1, 3, 6, and 12 months in 78.6%, 78.6%, 78.6%, and 56.1% of the patients, respectively. Conclusion EVT using Viabahn for AIB at the visceral arteries was safe and effective. SG occlusions without ischemia often occurred after 12 months.