Ascending aortobifemoral and adjunct carotid bypass grafts.

We describe a case of simultaneous ascending aortobifemoral and right common carotid artery bypass to treat a symptomatic brachiocephalic artery and juxtarenal chronic total occlusion in a 68-year-old female patient with unfavorable characteristics for endovascular and standard aortofemoral procedures. Mid-term follow-up revealed sustained remission of symptoms, quality of life quality of life improvement, and patent bypass grafts. In highly selected patients, this solution can be useful when treating other intrathoracic diseases, as well as allowing the simultaneous revascularization of two remote arterial beds.

Intravascular foreign body retrieval.

INTRODUCTION: Intravascular foreign body (IFB) embolization is a potential complication of any vascular procedure. Intravascular foreign body retrieval (IFBR) can be achieved using percutaneous techniques, open surgery, or both combined. METHODS: We completed a retrospective review of patients who underwent endovascular or open IFBR since 2011 on our institution. Primary end-point was technical retrieval success, and secondary end-points were procedure-related compli- cations and 30-days survival. RESULTS: Twenty-seven patients underwent IFBR. Median time from intravascular device loss and retrieval was less than one day. 67% were non-endovascular guidewires and sheath fragments (N=28). 59% of IFBs were lost during their deployment (N=16); 41% during their removal attempts (N=11). 44% were lost in the arterial system (N=12) and 52% in the venous system (N=14). An endovascular procedure was used as the first approach in IFBR in 56% of patients (N=15) and open procedure in 44% (N=12). In the presence of IFB on the thoracic or abdominal cavity, it was always tried a first-endo approach; if IFB was present on the neck or limbs, 75% were retrieved by open surgery (N=20; p<0.001). Success rates were 100% for open and 87% for endovascular procedures. IFB caused five acute complications: one IJV thrombosis, two strokes and three acute limb ischemia. There were no IFBR-related complications. 30 days-survival was 100%. CONCLUSION: Embolization of IFBs can be minimized with proper device selection, deployment and removal. In this study, open and endovascular retrieval had high success rates and minimal morbidity. Its choice is surgeon-dependent and restrained by devices availability.

Off the Shelf Thoracic Endovascular Aortic Repair with Sandwich Technique for the Treatment of a Thoraco-Abdominal Penetrating Aortic Ulcer.

Introduction: Penetrating aortic ulcers (PAUs) are the rarest subset of acute aortic syndromes, and a thoraco-abdominal (TA) location is uncommon. Endovascular surgery is considered first line treatment. Custom made branched/fenestrated endografts have been successfully applied in this disease but are unavailable in the urgent setting. Off the shelf solutions may be required in high risk patients. The case of a symptomatic rapidly expanding TA-PAU without a distal seal zone that underwent urgent endovascular repair is described. Report: An 81 year old male presented with acute intense thoracic pain. Workup revealed a large TA-PAU. As pain was refractory and computed tomography angiography confirmed rapid expansion, urgent repair was proposed. Due to multiple comorbidities and absence of adequate distal seal zone, an off label endovascular treatment was proposed. The patient underwent successful endovascular repair with two aortic stent grafts (GORE cTAG) with 30% oversize and 50-55 mm overlap between modules, combined with chimney self expanding stent grafts (GORE VIABAHN) to the coeliac trunk and superior mesenteric artery in a sandwich configuration. The post-operative course was uneventful. Follow up at 18 months revealed no endoleaks and patent bridging stent grafts without visceral compromise. Discussion: Thoracic endovascular aortic repair (TEVAR) is considered the first treatment option for urgent PAU. However, anatomic requirements limit its use in the thoraco-abdominal aorta. Parallel graft techniques have been described to overcome these anatomic constraints in TA aneurysms. The use of a "sandwich technique" to successfully exclude a PAU without a distal sealing zone for standard TEVAR is described. The advantage was limited aortic coverage compared with a branched device or an "octopus" technique. This solution is particularly useful in urgent situations when patients cannot wait for a custom made device and the morbidity associated with open or hybrid repair is unacceptably high. An off the shelf sandwich technique is a potential safe and long lasting therapeutic option for the urgent treatment of TA-PAU.

Cystic Adventitial Disease of the Popliteal Vein, a Rare Cause of Lower Limb Deep Vein Thrombosis.

Introduction: Cystic adventitial disease (CAD) is characterised by the accumulation of gelatinous fluid within the adventitial layer of a blood vessel. Over 90% of CAD occurs in the arterial system. Venous CAD most commonly involves the iliofemoral rather than the popliteal segments. Report: This is the report of a 49 year old female patient with a previous right leg deep vein thrombosis (DVT). She presented to a vascular outpatient appointment with recurrent right lower extremity swelling. Venous duplex ultrasound showed an ectatic and incompetent right popliteal vein. Computed tomography (CT) venography showed focal ectasia of the right popliteal vein resulting from an eccentric low density cyst with a diameter of 15 mm. Under general anaesthesia, the patient was placed in the prone position. A lazy S incision was performed in the right popliteal fossa. The popliteal vein had an eccentrically thickened lateral bulge. After heparinisation, a longitudinal venotomy, endophlebectomy, and en bloc cyst removal were performed sequentially. Popliteal patch venoplasty was performed subsequently using the ipsilateral small saphenous vein. After six months, the patient remains on rivaroxaban. A follow up venous duplex ultrasound showed vein reflux through a standard calibre popliteal vein without evidence of cyst recurrence. Conclusion: Venous CAD is a rare disease and should be considered if previous DVT or symptoms mimicking DVT occur. Cyst resection and reconstruction with vein patch, venous or synthetic graft is the most commonly used strategy and has lower rates of cyst recurrence and need for re-operation.

Vascular Trauma in Children-Review from a Major Paediatric Center.

BACKGROUND: Traumatic noniatrogenic vascular injuries in children are rare and rarely discussed in literature. Pediatric vascular injuries pose a set of challenges mainly because of continued growth and development in a child or adolescent. The purpose of the study is to characterize management strategies and outcomes in these cases. METHODS: This is a single-center retrospective review of patients less than age 18 years (pediatric age) with acute, noniatrogenic traumatic vascular injuries between January 2009 and December 2015. Patient's demographics, injury characteristics, surgical management, complications, and follow-up were analyzed. RESULTS: From 2009 to 2015, 3277 children with traumatic injuries were treated, of which 21 (0.6%) had 23 significant vascular injuries: 17 arterial and 6 venous injuries. The majority were males (n = 16), and the median age was 14 years (range 1 to 16 years). Penetrating injuries were the predominant mechanism (n = 21), mainly by glass (n = 13). At presentation, 4 patients were hemodynamically unstable, 3 of them in hypovolemic shock. All patients were managed operatively. Operations for arterial injuries included 5 primary arterial repairs, 4 repairs using vein grafts and 8 ligations. The following adjunct procedures were necessary: one 4-compartment leg fasciotomy due to associated soft tissue trauma, 8 tendon repairs, and 11 nerve repairs. Operations for venous injuries included 4 ligations and 2 primary repairs. There were no intraoperative or postoperative deaths, major complications, or limb loss. The median length of stay in the hospital was 6 days (range: 2-23 days). The median time of follow-up was 52 months (range: 20-94 months). Ten patients did not have any sequelae, and 11 patients reported impaired mobility and/or decreased sensation, which was transitory in most cases and related to associated neurological or muscle tendon injuries. All reconstructions remained patent over the course of follow-up. No limb asymmetry was observed. CONCLUSIONS: Noniatrogenic pediatric vascular trauma is uncommon. Penetrating mechanism is more common than blunt and extremities are more frequently affected. Overall complications come from associated injuries to tendons and nerves.

Influence of interhospital transfer on outcomes of symptomatic and ruptured abdominal aortic aneurysms.

Objetive: Evaluate the influence of the geographic location of patients with symptomatic abdominal aortic aneurysms (AAA) or ruptured AAA (rAAA), on mortality. METHODS: Retrospective review of all cases of symptomatic AAA and rAAA submitted to surgery in a tertiary institution, between January 2011 and August 2017. The main outcome was in-hospital mortality. Secondary outcomes were admission to intensive care unit (ICU), length of ICU and hospital stay, type of repair and anesthesia and weekend presentation. Data was submitted to univariable analysis and logistic regression. Statistical significance was considered if the p value was <0.05. RESULTS: 135 patients were admitted with the diagnosis of symptomatic or rAAA and submitted to surgery, 83 (61.5%) by endovascular repair and 52 (38.5%) by open repair, 30.4% with local anesthesia and sedation. 92 patients (68.1%) were transferred from other hospitals, with a mean distance of 113±88 km. Subgroup analysis revealed that there were no significant differences between transferred and not transferred patients' groups concerning main outcome (31.5% vs 34.9%, p=0.35), baseline characteristics (age and gender), type of surgery and anesthesia, weekend presentation, ICU admission, length of ICU and hospital stay. Logistic regression analysis revealed that the variables associated with mortality were female gender (odds ratio [OR] 2.28; 95% confidence interval [CI] 1.40-3.70; p<0.01), open repair (OR 2.79; 95% CI 1.68-4.63; p<0.01) and general anesthesia (OR 9.16; 95% CI 2.33-36.06; p<0.01). CONCLUSION: Our study revealed that interhospital transfer of patients for urgent repair of AAA was not associated with an increased mortality.

Objetivo: Avaliar a influência da localização geográfica dos doentes com aneurismas da aorta abdominal (AAA) sintomáticos ou rotos (rAAA), na mortalidade. Métodos: Revisão retrospetiva de todos os casos de AAA sintomáticos ou rAAA submetidos a cirurgia numa instituição terciária, entre Janeiro 2011 e Agosto 2017. O outcome primário foi a mortalidade intrahospitalar. Os outcomes secundários foram a admissão em unidade de cuidados intensivos (UCI), duração do internamento na UCI e hospitalar, tipo de cirurgia e anestesia e a apresentação ao fim-de-semana. Os dados foram submetidos a análise univariável e regressão logística. Foi considerado um valor estatisticamente significativo quando o valor de p <0.05. Resultados: 135 doentes foram admitidos com o diagnóstico de AAA sintomático ou rAAA e submetidos a cirurgia, 83 (61.5%) por via endovascular e 52 (38.5%) por via convencional, 30.4% com anestesia local e sedação. 92 doentes (68.1%) foram transferidos de outros hospitais, com uma distância média de 113±88 km. A análise de subgrupos revelou que não existia diferença significativa entre os grupos de doentes transferidos e não transferidos relativamente ao outcome primário (31.5% vs 34.9%, p=0.35), características de base (idade e género), tipo de cirurgia e anestesia, apresentação ao fim-de-semana, admissão na UCI, duração do internamento na UCI e hospitalar. A análise de regressão logística revelou que as variáveis associadas com a mortalidade foram o género feminino (odds ratio [OR] 2.28; 95% intervalo de confiança [IC] 1.40- 3.70; p<0.01), cirurgia convencional (OR 2.79; 95% IC 1.68-4.63; p<0.01) e anestesia geral (OR 9.16; 95% IC 2.33- 36.06; p<0.01). Conclusão: Este estudo revelou que a transferência interhospitalar de doentes para a reparação cirúrgica urgente de AAA não está associada a aumento da mortalidade.

Median Arcuate Ligament Syndrome of Diaphragm - Literature Review and Case Report.

OBJECTIVES: To report a case of median arcuate ligament syndrome (MALS) and to review current literature. METHODS: Case report and literature review using PubMed with the terms "median arcuate ligament", "Dunbar syndrome" and "MALS treatment" as major topics. The bibliography of relevant articles has been checked to identify other significant papers. RESULTS: Median arcuate ligament syndrome (MALS) or Dunbar syndrome is a rare clinical entity characterized by celiac trunk compression by median arcuate ligament and variable gastrointestinal symptoms. However, some degree of radiographic compression is observed in 10%-24% of asymptomatic patients, so MALS is a diagnosis of exclusion. Treatment options include release of median arcuate ligament (open, laparoscopic or robot-assisted) and open vascular reconstruction. Endovascular treatment is currently used only as adjuvant procedure after surgical release of median arcuate ligament. A 34-year-old woman, previously healthy, presented with a epigastric pain, mainly postprandial, for 6 months, associated to anorexia and unprovoked weight loss of 8kg over 3 months. Physical examination was normal. Other gastrointestinal pathologies were ruled out. Abdomino-pelvic computed tomography angiography revealed a focal 80% stenosis of proximal celiac trunk. An open decompression of the celiac trunk was performed. The postoperative period was uneventful and the patient was discharged 5 days later, with normal gastrointestinal transit and without abdominal pain recurrence. CONCLUSION: MALS diagnostic and therapeutic approach must be patient focused, bearing in mind the multiple clinical presentation and treatment options. Open surgical decompression of median arcuate ligament is the base of treatment.

Objetivos: Descrever um caso clínico de síndrome do ligamento arqueado do diafragma (SLA) e realizar uma revisão da literatura. Métodos: Descrição de um caso clínico e revisão da literatura com recurso ao PubMed com os termos "median arcuate ligament", "Dunbar syndrome" e "MALS treatment". A bibliografia dos artigos relevantes foi verificada para identificar outros artigos pertinentes. Resultados: A síndrome do ligamento arqueado (SLA) ou síndrome de Dunbar é uma entidade clínica rara caracterizada pela compressão do tronco celíaco associada a sintomas gastrointestinais variáveis. No entanto, algum grau de compressão radiográfica é observado em 10-24% de doentes assintomáticos, o que torna o diagnóstico de SLA de exclusão. As opções terapêuticas incluem a secção do ligamento arcuato (via convencional, laparoscópica ou robótica) e a reconstrução vascular. A abordagem endovascular é atualmente utilizada apenas como procedimento adjuvante após a secção do ligamento arqueado. Doente do sexo feminino de 34 anos de idade, previamente saudável, recorre ao médico assistente por um quadro de dor epigástrica, especialmente pós-prandial, com 6 meses de evolução, associada a anorexia e perda ponderal não provocada superior a 8kg, num período de 3 meses. O exame objetivo não relevou alterações. Outras patologias gastrointestinais foram excluídas. A angiografia por tomografia computorizada revelou uma estenose focal de 80% na porção proximal do tronco celíaco. A doente foi submetida a uma descompressão cirúrgica por via convencional. O período pós-operatório decorreu sem intercorrências, tendo alta 5 dias após a intervenção com o trânsito gastrointestinal restabelecido e sem recorrência da dor abdominal. Conclusão: A abordagem diagnóstica e terapêutica do SLA deve ser individualizada e focada no doente, tendo em conta as múltiplas apresentações clínicas e possíveis opções terapêuticas. A descompressão cirúrgica convencional do ligamento arqueado continua a ser a base do tratamento.

Median Arcuate Ligament Syndrome - Literature Review and Case Report.

INTRODUCTION: Median arcuate ligament syndrome (MALS) or Dunbar syndrome is a rare clinical entity characterized by celiac trunk compression by median arcuate ligament and variable gastrointestinal symptoms (postprandial epigastric pain, nausea, weight loss, anorexia and diarrhea). However, some degree of radiographic compression is observed in 10%-24% of asymptomatic patients. Besides the extrinsic vascular compression, MALS has a multifactorial etiology and it has been suggested as a neurogenic disease resulting in altered sensation and pain from the somatic nerves in the splanchnic plexus. MALS is a diagnosis of exclusion, so other causes must be excluded. Treatment options include release of median arcuate ligament (open, laparoscopic or robot-assisted) and open vascular reconstruction. Endovascular treatment is currently used only as adjuvant procedure after surgical approach, in refractory cases with residual stenosis of celiac trunk. OBJECTIVE: To report a case of MALS and to review current literature. METHODS: The authors report a clinical case and present a literature review using PubMed with the terms "median arcuate ligament", "Dunbar syndrome" and "MALS treatment" as major topics. The bibliography of relevant articles has been checked to identify other significant papers. RESULTS: A 34-year-old woman, previously healthy, recurred to a General Practitioner with a recurrent epigastric pain, exacerbated by ingestion, without relieving factors, in the previous 6 months. Patient also reported anorexia and unprovoked weight loss of 8Kg over 3 months. Physical examination was normal. Other gastrointestinal pathologies were ruled out. Computed Tomography Angiography (CTA) abdomen revealed a focal 80% stenosis of the celiac trunk, located 8mm from its origin in aorta and a post- -stenotic enlargement of 9mm. An open decompression of the celiac trunk was performed. Through an 8cm median supraumbilical laparotomy, supraceliac abdominal aorta was approached. The compressive band across the celiac trunk was identified and cut. Further dissection was performed until the celiac artery became completely exposed and its branches identified. The postoperative period was uneventful and the patient was discharged 5 days later, with normal gastrointestinal transit and without recurrence of the abdominal pain. 1 month later, the patient remained asymptomatic. A long-term follow-up with annual duplex scan and clinical evaluation must be done, in order to evaluate the need of a revascularization due to persistent stenosis or aneurysmal degeneration. CONCLUSION: MALS diagnostic and therapeutic approach must be patient focused, bearing in mind the multiple clinical presentation and treatment options. Open surgical decompression of median arcuate ligament is the base of therapy.

Influence of Interhospital Transfer on Outcomes of Symptomatic and Ruptured Abdominal Aortic Aneurysms.

INTRODUCTION: Symptomatic or ruptured abdominal aortic aneurysms (rAAA) maintains a high mortality index despite technical advances in its treatment. The influence of patients' geographic location on rAAA outcomes, when the rupture occurs or when the AAA becomes symptomatic, has not been a commonly studied issue. Due to the lack of research on this matter, the impact of interhospital transfer on mortality is ambiguous. OBJECTIVE: Evaluate the influence of the geographic location of patients with symptomatic AAA or rAAA on AAA mortality. METHODS: Retrospective review of all cases of symptomatic AAA and rAAA submitted to surgery in a tertiary institution, between January 2011 and August 2017. The main outcome was in-hospital mortality. Secondary outcomes were admission to intensive care unit (ICU), length of ICU and hospital stay, type of repair and anesthesia and weekend presentation. Data was submitted to univariable analysis and logistic regression. Statistical significance was considered if the p value was <0.05. RESULTS: During the defined period of 80 months, a total of 135 patients were admitted with the diagnosis of symptomatic or rAAA and submitted to surgery. Most patients had a ruptured AAA (90.4%, n=122), while symptomatic AAA represented a minority (9.6%, n=13). All patients (91.1% male gender, mean age 74±10 years) were submitted to surgery, 83 (61.5%) by endovascular repair and 52 (38.5%) by open repair, 30.4% with local anesthesia and sedation (n=41), all in the endovascular group. 92 patients (68.1%) were transferred from other hospitals, with a mean distance of 113±88 km. In this cohort, in-hospital mortality was 31.5% in transferred patients and 34.9% in not transferred patients. Subgroup analysis revealed that there were no significant differences between transferred and not transferred patients' groups concerning main outcome (p=0.35), baseline characteristics (age and gender), type of surgery and anesthesia, weekend presentation, ICU admission, length of ICU and hospital stay. Logistic regression analysis revealed that the variables associated with mortality were female gender (odds ratio [OR] 2.28; 95% confidence interval [CI] 1.40-3.70; p<0.01), open repair (OR 2.79; 95% CI 1.68-4.63; p<0.01) and general anesthesia (OR 9.16; 95% CI 2.33-36.06; p<0.01). CONCLUSION: Our study revealed that transfer of patients for urgent repair of AAA was not associated with an increased mortality. The hypothetical increased mortality due to transfer might have been compensated by endovascular treatment and local anesthesia in some cases. Further studies must be carried out, particularly comparing endovascular and open repair in emergency setting.

In the Current Era of Endovascular Surgery, What is the Role of Axillofemoral Bypass?

INTRODUCTION: Nowadays, axillofemoral bypass is viewed as an end-of-line solution for lower limb revascularization, owing to its classically described poor long-term patency, and recent advances in endovascular options for patients with complex aortoiliac anatomy not suitable for open reconstruction. There is a marked difference in patient profiles in published series of axillofemoral bypass, reflecting changing procedures indications due to technical innovations. The objective of this study is to determine the contemporary profile of patients treated with axillofemoral bypass and their outcome. METHODS: Patients who underwent axillofemoral bypass surgery in a tertiary hospital from April 2011 to September 2017 were identified. Surgical indication, patency, amputation and death rates were recorded. Patients were grouped in axillouni vs axillobifemoral, 1st revascularization procedure vs reintervention, and primary aortoiliac occlusive disease vs primary aneurysmal disease, and were compared using Kaplan-Meier survival analysis. RESULTS: 54 patients were included. 80% underwent an axillobifemoral bypass. Median age was 67 years; 96% were male. The most prevalent cardiovascular risk factors were HTA (81%) and history of smoking (76%). Primary vascular disease was aneurysmal in 24% of patients. The remaining group had peripheral occlusive arterial disease. In 53%, axillofemoral bypass was the first revascularization performed (naif group). On these, indications for this procedure were aorto-iliac occlusive disease (89%) and AA thrombosis (19%). In patients previously submitted to revascularization (47%), the most common first procedures were aortobifemoral bypass (56%), femoro-femoral bypass (44%) and EVAR (36%). Indications for axillofemoral bypass on this group were: prosthesis thrombosis (64%), secondary aorto-enteric fistulae (28%) and prosthesis infection (8%). Primary patency of axillofemoral bypass was 93% at 1 month and 80% at 5 years (Graphic 1). Differences were not significant regardless the vascular surgery status (naif vs reintervention), but axillobifemoral bypass and aneurysmal disease groups had a higher patency than axillounifemoral bypass and occlusive disease groups, respectively. No patient with aneurysmal disease required amputation over a 5-year follow-up. In primary occlusive disease group, 88% of patients were free-of-amputation at 1 month and 83% at 5 years. Patients who underwent this procedure had a survival rate of 78% at 1 month and 59% at 5 years (Graphic 2). No major difference was recorded between study groups. CONCLUSION: Axillofemoral bypass, although being an increasingly uncommon procedure, still allows acceptable rates of patency and limb salvage. As patients with aortoiliac disease usually have multiple comorbidities and a short life- -expectancy, axillofemoral bypass is attractive owing to its less invasive character.

Infrarenal Abdominal Penetrating Aortic Ulcer, an Atypical Location of a Rare Disease.

INTRODUCTION: Penetrating aortic ulcer (PAU) is classically included in acute aortic syndromes, together with aortic dissection and intramural hematoma. These three disorders are considered different stages of the same disease. PAU is the result of medial degeneration with disruption of the intima, mainly due to atherosclerotic risk factors. Most of them are located on descending thoracic aorta and only a few small series and case reports demonstrate location on infrarenal abdominal aorta. Clinical presentation varies in spectrum, from asymptomatic to fatal aortic rupture. Treatment options include medical therapy, particularly strict blood pressure control, and surgical approach. Nowadays endovascular exclusion is commonly performed, although open surgical reconstruction remains the gold standard. METHODS: Report a case of endovascular repair of an infrarenal abdominal PAU. RESULTS: A 72-year-old man, with hypertension, type 2 diabetes, hypercholesterolemia, lumbar osteoarthrosis, was referred to Vascular Surgery outpatient clinic with the diagnosis of infrarenal abdominal PAU on a Computed Tomography Angiography (CTA). This exam was performed due to chronic lumbar complaints from lumbar osteoarthrosis. The patient denied any other complaint. Physical examination was normal. A thoraco-abdomino-pelvic CTA revealed two sites of PAU in the infrarenal aorta with 10mm and 21mm of depth and associated aortic enlargement of 39mm maximum diameter. This exam revealed an enlargement of the depth of the PAU and the aorta diameter in 2 and 3mm, respectively, in the course of 2 months. An EVAR was performed, in a standard aorto-biiliac fashion. The post-operative period was uneventful and the patient discharged 3 days later. 1 month after the surgery, patient remained asymptomatic and the follow-up CTA demonstrated exclusion of both PAU, no endoleaks and stability of aortic diameter. A long term follow-up should be maintained, as for regular EVAR. CONCLUSION: PAU is a rare clinical entity, with infrarenal abdominal aorta location even scarcer. Asymptomatic patient must be regularly followed and threshold to treatment low, bearing in mind the possible catastrophic evolution of the disease. Endovascular approach should be considered as a first approach, considering the technical feasibility and the comorbidities associated with this elderly population.

Acute Iatrogenic Limb Ischaemia, a Report of 2 Late Presentation Cases.

INTRODUCTION: With increasing use of percutaneous vascular procedures, access complications that present to a vascular surgeon increase. The most limb-threatening condition is acute limb ischaemia. Acute limb ischaemia is the most common vascular surgical emergency. In spite of recent advances in vascular surgery, it continues to carry a poor prognosis, if not early diagnosed and managed. METHODS: This is a case-report of 2 patients referenced to a vascular surgery emergency department of a tertiary hospital with late acute limb ischaemia. RESULTS: Patient 1: Male, 42 years, alcoholic, autonomous, presented with pain with elbow active movements in a secondary hospital. Excluded acute orthopaedic injury, doctor recorded signs of acute limb ischaemia and referenced patient to a tertiary hospital, where vascular surgeon diagnosed an acute advanced upper limb ischaemia. Bed-side Eco-Doppler showed an echogenic linear material on a thrombosed umeral artery, surgically confirmed to be a guidewire (Fig.1. Surgical extraction of intra-umeral guidewire). Reviewing patient history, this guidewire should have been missed over 6 months, by the time the patient was hospitalized on an ICU for alcoholic coma. Patient underwent umeral, radial and ulnar thromboembolectomy and had a no-reflow status. However, poor persistent global status, with limited mobilization, pressure forces and prolonged vasotropic support, promoted progression of a cyanotic leg plaque to a necrotic evolving leg ulcer with septic response, despite persistent good perfusion of the foot (Fig.2. Necrotic evolving leg ulcer). Unfortunately, the two reported patients underwent urgent major limb amputation, patient 1 above the elbow, and patient 2 above the knee. CONCLUSION: Acute limb ischaemia continues to carry a poor limb and life prognosis if not early diagnosed. We should be alert for the increasingly prevalence of iatrogenic acute limb ischaemia, and regularly evaluate perfusion status of limbs after any percutaneous procedure.

Estanques de compensacion en Ovejuyo calculo estructural

El proyecto consiste en el calculo de la cupula esferica central, de la cubierta exterior que consiste en una placa empotrada en la pared cilindrica exterior y simplemente apoyada en el anillo de la cupula. Este anillo esta situado en la base de la cupula nos permite absorber los empujes horizontales provenientes del peso propio y la sobrecarga en la cupula. Las paredes cilindricas estan empotradas en su base, de manera que la losa del piso no está solicitad por ningun esfuerzo, sirviendo tan solo para la impermeabilizacion de la parte inferior de los estanques. El proyecxto ha sido diseñado con el objeto de proveer a la ciudad de La Paz en sus zonas de Ovejuyo, calacoto, San Miguel y la proxima urbanizacion de los pinos, de un buen servicio de agua potable mediante la construccion de estanques de compensación, de modo que se pueda abastecer a las diferenets zonas indicadas, en las horas de maximo consumo y el acumulamiento en dichos depósitos durante las horas de poco consumo