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1.
J. vasc. bras ; 23: e20230033, 2024. tab, graf
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1534799

ABSTRACT

Resumo Contexto A abordagem cirúrgica para estenose carotídea sintomática está consolidada na literatura para a prevenção de eventos neurológicos, devendo seguir padrões ótimos de qualidade. Entretanto, há uma crescente preocupação relacionada à possibilidade ou não de replicar os dados dos trabalhos controlados no mundo real. Objetivos Avaliar a população com estenose carotídea sintomática submetida a cirurgia e seus desfechos de curto prazo em um contexto de mundo real em um centro de formação profissional. Métodos Tratou-se de um estudo observacional realizado por meio de coleta de dados em prontuário de janeiro de 2012 a janeiro de 2023. Foram excluídos pacientes operados por outras etiologias e com cirurgia cardíaca concomitante. Resultados Foram incluídos 70 pacientes submetidos a angioplastia ou endarterectomia carotídea. Os subgrupos populacionais submetidos a angioplastia ou endarterectomia foram semelhantes. Houve diferença estatisticamente relevante quanto à modalidade anestésica e ao tempo cirúrgico maior para o subgrupo de endarterectomia carotídea. Houve quatro casos de acidente vascular encefálico isquêmico, e três deles estavam relacionados à lesão, sendo dois menores e um maior. Dessa forma, a taxa de acidente vascular encefálico maior relacionado à lesão foi de 1,43% e de qualquer acidente vascular encefálico relacionado à lesão, de 4,29%. A taxa total de eventos adversos cardiovasculares maiores foi de 5,71%. Houve um caso de infarto agudo do miocárdio no grupo angioplastia e nenhum óbito. Não houve diferença estatística entre os grupos de endarterectomia e angioplastia quanto aos desfechos principais. Conclusões Os desfechos acidente vascular encefálico isquêmico, infarto agudo do miocárdio, óbito e eventos adversos cardiovasculares maiores neste centro são semelhantes aos encontrados em estudos clínicos randomizados, demonstrando viabilidade da manutenção deste tratamento em centros com programas de ensino.


Abstract Background Surgical treatment of symptomatic extracranial carotid stenosis is well established for preventing neurological events and should adhere to optimal quality standards. However, there is growing concern as to whether results of controlled trials are replicable in real-world settings. Objectives To assess a symptomatic carotid stenosis population that underwent surgery and its short-term outcomes in a real-world context at a professional training center. Methods Observational study using data collected from medical records from January 2012 to January 2023. Patients undergoing operations for other carotid diseases and with concomitant heart surgery were excluded. Results A total of 70 patients undergoing angioplasty or carotid endarterectomy were included. Population subsets undergoing angioplasty or endarterectomy were similar. Differences in anesthetic modality and a longer operative time in the carotid endarterectomy subgroup were statistically significant. There were 4 cases of stroke, only 3 of which (2 minor and 1 major) were related to the index lesion. Thus, the rate of major operation-related stroke was 1.43% and the rate of any lesion-related stroke was 4.29%. There was 1 case of AMI in the angioplasty group and there were no deaths in the sample. The overall rate of major adverse cardiovascular events was 5.71%. There were no statistical differences between the endarterectomy and angioplasty groups regarding the main outcomes. Conclusions The rates of outcomes of ischemic stroke, acute myocardial infarction, death, and major adverse cardiovascular events at this center are in line with the rates reported by randomized controlled trials, demonstrating the feasibility of carotid surgery in centers with teaching programs.

2.
J. vasc. bras ; 22: e20230042, 2023. tab
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1521176

ABSTRACT

Resumo Trauma é uma causa importante de morbimortalidade, que acomete principalmente jovens. A hemorragia incoercível é o principal mecanismo de óbito precoce nessas vítimas, e as lesões vasculares não compressíveis representam grandes desafios para os cirurgiões. O traumatismo vascular impacta diretamente a viabilidade de membros traumatizados, aumentando o risco de amputação. Nas últimas décadas, muitas condutas de diagnóstico e tratamento de lesões vasculares traumáticas foram modificadas. A angiotomografia suplantou a angiografia como padrão ouro para diagnóstico, as técnicas endovasculares foram incorporadas ao arsenal terapêutico e o conceito de "controle de danos" foi estabelecido. No entanto, há lacunas na literatura nacional sobre a normatização de condutas em trauma vascular, principalmente considerando as limitações do Brasil. Por isso, a Sociedade Brasileira de Angiologia e de Cirurgia Vascular e a Sociedade Brasileira de Atendimento Integrado ao Traumatizado revisaram a literatura disponível sobre trauma vascular e organizaram diretrizes sobre o diagnóstico e tratamento dessas lesões.


Abstract Trauma is a leading cause of death, permanent disability, and health care cost worldwide. The young and economically active are the most affected population. Exsanguination due to noncompressible torso hemorrhage is one of the most frequent causes of early death, posing a significant challenge to trauma and vascular surgeons. The possibility of limb loss due to vascular injuries must also be considered. In recent decades, the approach to vascular injuries has been significantly modified. Angiotomography has become the standard method for diagnosis, endovascular techniques are currently incorporated in treatment, and damage control, such as temporary shunts, is now the preferred approach for the patients sustaining physiological derangement. Despite the importance of this topic, few papers in the Brazilian literature have offered guidelines on vascular trauma. The Brazilian Society of Angiology and Vascular Surgery has developed Projetos Diretrizes (Guideline Projects), which includes this publication on vascular trauma. Since treating trauma patients is a multidisciplinary effort, the Brazilian Trauma Society (SBAIT) was invited to participate in this project. Members of both societies reviewed the literature on vascular trauma management and together wrote these guidelines on vascular injuries of neck, thorax, abdomen, and extremities.

3.
J. vasc. bras ; 22: e20230007, 2023. tab
Article in Portuguese | LILACS-Express | LILACS | ID: biblio-1448594

ABSTRACT

Resumo Contexto O tromboembolismo venoso (TEV) é a terceira doença cardiovascular mais comum e a principal causa de óbito evitável em pacientes internados. Apesar de diretrizes bem estabelecidos na literatura, a profilaxia dessa afecção ainda é subutilizada. Estudos apontam taxa de adequação da profilaxia próxima de 50% mundialmente. Objetivos Avaliar a adequação da estratificação de risco e da prescrição de medidas de profilaxia do TEV em um hospital universitário terciário. Métodos Estudo transversal observacional realizado através da coleta de dados de prontuário. Foram incluídos pacientes adultos internados em diferentes especialidades e divididos em grupos cirúrgico e clínico. A estratificação de risco de TEV realizada pelos médicos assistentes foi comparada com a realizada pelos médicos pesquisadores, com base nas diretrizes recentes. A prescrição de medidas de profilaxia realizadas pelos médicos assistentes foi comparada com as recomendações das diretrizes, obtendo assim a taxa de adequação da profilaxia. Resultados Foram avaliados 400 pacientes, sendo 169 (42,3%) cirúrgicos e 231 (57,7%) clínicos. A taxa geral de adequação da estratificação foi de 50,8%. Nos grupos cirúrgico e clínico, as taxas de adequação foram respectivamente 39,1% e 59,3% (p < 0,0001). A taxa geral de adequação da profilaxia foi de 71,5%, enquanto no grupo cirúrgico foi de 78,1% e no grupo clínico de 66,7% (p = 0,0137). Conclusões A adequação da estratificação de risco para TEV foi baixa, demonstrando a pouca conscientização dos médicos assistentes sobre esse problema. No entanto, as taxas de adequação da prescrição de medidas de profilaxia estão superiores às de dados globais.


Abstract Background Venous thromboembolism is the third most common cardiovascular disease and the main cause of preventable death in hospitalized patients. Prophylaxis is still underused, despite well-established guidelines in the literature. Studies show a worldwide prophylaxis adequacy rate close to 50%. Objectives To assess the adequacy of risk stratification and prophylactic measures for venous thromboembolism in a tertiary university hospital. Methods A cross-sectional observational study was carried out, collecting data from medical records. Adult patients hospitalized by different specialties were enrolled and divided into surgical and clinical groups. The risk stratification of venous thromboembolism performed by the attending physicians was compared with stratification based on recent guidelines performed by the research physicians. Prophylaxis measures prescribed by the attending physicians were compared with guideline recommendations, thus obtaining the prophylaxis adequacy rate. Results 400 patients were analyzed, 169 (42.3%) surgical and 231 (57.7%) clinical. The overall stratification adequacy rate was 50.8%. Adequacy rates were 39.1% and 59.3% in the surgical and clinical groups respectively (P < 0.0001). The overall prophylaxis adequacy rate was 71.5%, with 78.1% in the surgical group and 66.7% in the clinical group (P=0.0137). Conclusions Risk stratification adequacy is low, demonstrating a low awareness among prescribing physicians of the need for adequate stratification for prescription of prophylaxis. However, the prophylaxis prescription adequacy rates are higher than those in global data.

4.
J. vasc. bras ; 21: e20210159, 2022. tab, graf
Article in English | LILACS | ID: biblio-1375799

ABSTRACT

ABSTRACT Background Inpatient consultations are a fundamental component of practice in tertiary care centers. However, such consultations demand resources, generating a significant workload. Objectives To investigate the profile of inpatient consultations requested by other specialties and provided by the Vascular and Endovascular Surgery team at an academic tertiary hospital. Methods Prospective observational study. Results From May 2017 to May 2018, 223 consultations were provided, representing 2.2% of the workload. Most consultations were requested by Oncology (16.6%), Hematology (9.9%), Nephrology (9.0%), and Cardiology (6.3%). The leading reasons for inpatient consultation were: need for vascular access (51.1%) and requests to evaluate a vascular disease (48.9%). Acute venous diseases accounted for 19.3% of consultations, chronic arterial diseases for 14.8%, acute arterial diseases for 7.2%, diabetic feet for 5.4%, and chronic venous diseases accounted for 2.2%. Surgical treatment was performed in 57.0%, either conventional (43.9%) or endovascular (13.0%). Almost all (98.2%) patients' issues were resolved. Conclusions Inpatient consultations with the Vascular and Endovascular Surgery team in a tertiary academic hospital accounted for 2.2% of the team's entire workload. Most patients were elective and underwent low-complexity elective surgical procedures. There may be an opportunity to improve healthcare, redirecting these patients to the outpatient flow.


RESUMO Introdução Interconsultas são um componente fundamental da prática clínica em centros de atendimento terciários. No entanto, esse tipo de consulta requer recursos, resultando em uma alta carga de trabalho. Objetivo Investigar o perfil das interconsultas solicitadas por outros departamentos e realizadas pela equipe de Cirurgia Vascular e Endovascular em um hospital universitário terciário. Métodos Estudo observacional prospectivo. Resultados De maio de 2017 a maio de 2018, foram realizadas 223 consultas, correspondendo a 2,2% da carga de trabalho. A maioria das consultas foram solicitadas pelos departamentos de Oncologia (16,6%), Hematologia (9,9%), Nefrologia (9,0%) e Cardiologia (6,3%). As principais razões das interconsultas foram a necessidade de acesso vascular (51,1%) e de avaliação de doenças vasculares (48,9%). As doenças venosas agudas corresponderam a 19,3% das avaliações; as doenças arteriais crônicas, a 14,8%; as doenças arteriais agudas, a 7,2%; o pé diabético, a 5,4%; e as doenças venosas crônicas corresponderam a 2,2%. Foi realizado tratamento cirúrgico em 57,0% dos casos, tanto convencional (43,9%) quanto endovascular (13,0%). Foram resolvidos os problemas de quase todos os pacientes (98,2%). Conclusão As interconsultas realizadas pela equipe de Cirurgia Vascular e Endovascular em um hospital universitário terciário corresponderam a 2,2% da carga de trabalho total. A maioria dos pacientes eram eletivos e foram submetidos a procedimentos cirúrgicos eletivos de baixa complexidade. O redirecionamento desses pacientes para o atendimento ambulatorial poderia auxiliar na melhoria dos serviços de saúde.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Patient Admission , Referral and Consultation , Tertiary Healthcare/methods , Tertiary Care Centers/organization & administration , Vascular Surgical Procedures/organization & administration , Prospective Studies , Workload , Elective Surgical Procedures/methods , Health Resources , Hospitals, University
7.
Rev. Col. Bras. Cir ; 45(4): e1858, 2018. tab, graf
Article in Portuguese | LILACS | ID: biblio-956568

ABSTRACT

RESUMO Objetivo: avaliar a incidência, características epidemiológicas, diagnóstico e evolução dos pacientes que retornaram às unidades de pronto atendimento (UPA) do Hospital Albert Einstein em São Paulo/SP com sinais e sintomas sugestivos de complicações até 30 dias após realização de colonoscopia. Métodos: estudo retrospectivo uni-institucional de pacientes submetidos à colonoscopia em 2014 e que retornaram, em até 30 dias após o procedimento, a uma UPA. Resultados: foram realizadas colonoscopias em 8968 pacientes, dos quais 95 (1,06%) tiveram queixa relacionada à possível complicação. A maioria dos procedimentos foi realizada eletivamente. Complicações menores (dor abdominal inespecífica/distensão) foram frequentes (0,49%) e a maioria dos pacientes recebeu alta após consulta na UPA. Complicações graves foram menos frequentes: perfuração (0,033%), hemorragia digestiva baixa (0,044%) e obstrução intestinal (0,044%). A procura à UPA em menos de 24 horas após o procedimento associou-se a maior índice de colonoscopias normais (P=0,006), mais diagnóstico de febre (P=0,0003) e síndrome dispéptica (P=0,043) e menos diagnóstico de colite/ileíte (P=0,015). A presença de febre em pacientes atendidos na UPA associou-se ao diagnóstico de pólipos na colonoscopia (P=0,030). Conclusão: os dados do presente estudo corroboram as evidências de segurança do exame de colonoscopia e apontam para redução nos índices de complicações mais graves deste exame.


ABSTRACT Objective: to evaluate the incidence, epidemiological characteristics, diagnosis and evolution of patients who returned to the emergency care units of the Albert Einstein Hospital in São Paulo/SP with signs and symptoms suggestive of colonoscopy complications up to 30 days after the procedure. Methods: we conducted a retrospective, uni-institutional study of patients submitted to colonoscopy in 2014 who returned to the Emergency department (ED) within 30 days after the procedure. Results: 8968 patients underwent colonoscopies, 95 (1.06%) of whom had complaints related to possible complications. Most of the procedures were elective ones. Minor complications (nonspecific abdominal pain/distension) were frequent (0.49%) and most of the patients were discharged after consultation at the ED. Severe complications were less frequent: perforation (0.033%), lower gastrointestinal bleeding (0.044%), and intestinal obstruction (0.044%). ED consultations in less than 24 hours after the procedure was associated with a higher index of normal colonoscopies (p=0.006), more diagnosis of fever (p=0.0003) and dyspeptic syndrome (p=0.043), and less diagnosis of colitis/ileitis (p=0.015). The observation of fever in patients treated at the ED was associated with the diagnosis of polyps at colonoscopy (p=0.030). Conclusion: the data corroborate the safety of the colonoscopy exam and points to a reduction in major complications rates.


Subject(s)
Humans , Male , Female , Adult , Aged , Colonoscopy/adverse effects , Colon/injuries , Gastrointestinal Hemorrhage/epidemiology , Intestinal Perforation/epidemiology , Patient Readmission/statistics & numerical data , Abdominal Pain/etiology , Abdominal Pain/epidemiology , Incidence , Retrospective Studies , Colonoscopy/statistics & numerical data , Emergency Service, Hospital/statistics & numerical data , Fever/etiology , Fever/epidemiology , Gastrointestinal Hemorrhage/etiology , Intestinal Perforation/etiology , Middle Aged
8.
J. vasc. bras ; 16(1): f:48-l:51, Jan.-Mar. 2017. ilus
Article in Portuguese | LILACS | ID: biblio-841407

ABSTRACT

Resumo Relatamos o caso de uma menina de 12 anos que deu entrada na unidade de emergência com quadro de abdome agudo hemorrágico, massa abdominal pulsátil e instabilidade hemodinâmica. Confirmado o diagnóstico de aneurisma roto de artéria ilíaca direita, foi realizada correção cirúrgica de emergência por reparo aberto com reconstrução extra-anatômica, utilizando enxerto sintético de fino calibre, compatível com a anatomia. O tratamento foi bem-sucedido e a criança apresentou evolução favorável em curto prazo.


Abstract We describe the case of a 12-year-old girl who presented at the emergency department with hemorrhagic acute abdomen, an abdominal pulsating mass and hemodynamic instability. A diagnosis of ruptured right iliac artery aneurysm was confirmed and an emergency open repair procedure was performed with extra-anatomic reconstruction, using a small-caliber synthetic graft, compatible with her anatomy. The treatment was successful and the child was doing well at short-term follow-up.


Subject(s)
Humans , Female , Child , Aneurysm, Ruptured/surgery , Child , Iliac Aneurysm/surgery , Iliac Artery , Abdomen, Acute/complications , Abdomen, Acute/diagnosis , Blood Vessel Prosthesis
9.
J. vasc. bras ; 15(4): 287-292, Oct.-Dec. 2016. graf
Article in English | LILACS | ID: biblio-841391

ABSTRACT

Abstract Air plethysmography is a non-invasive test that can quantify venous reflux and obstruction by measuring volume changes in the leg. Its findings correlate with clinical and hemodynamic measures. It can quantitatively assess several components of venous hemodynamics: valvular reflux, calf muscle pump function, and venous obstruction. Although clinical uses of air plethysmography have been validated, it is used almost exclusively for medical research. Air plethysmography can be used to assess chronic venous disease, to evaluate improvement after venous surgery, to diagnose acute and past episodes of deep venous thrombosis, to evaluate compression stocking therapy, to study the physiological implications of high-heeled shoes in healthy women, and even to evaluate the probability of ulcer healing.


Resumo A pletismografia a ar é um método não invasivo que pode quantificar refluxo e obstrução venosa medindo alterações no volume das pernas. Seus achados se correlacionam com parâmetros clínicos e hemodinâmicos. Ela pode fornecer informações quantitativas dos diferentes componentes da hemodinâmica venosa: refluxo valvular, função de bomba muscular da panturrilha e obstrução venosa. Apesar de ter seu uso clínico validado, a pletismografia a ar é usada quase que exclusivamente para pesquisa. Ela pode ser usada para avaliar a doença venosa crônica, mensurar o ganho hemodinâmico após cirurgia venosa, diagnosticar trombose venosa profunda atual ou prévia, avaliar os efeitos da elastocompressão, estudar as implicações fisiológicas do uso de salto alto em mulheres e também avaliar a probabilidade de cura de uma úlcera venosa.


Subject(s)
Humans , Female , Skin Ulcer/pathology , Venous Thrombosis/diagnostic imaging , Venous Thrombosis/pathology , Chronic Disease , Plethysmography/classification
10.
J. vasc. bras ; 15(3): 245-249, jul.-set. 2016. graf
Article in Portuguese | LILACS | ID: lil-797956

ABSTRACT

Resumo A doença cística da adventícia é uma entidade rara que acomete principalmente a artéria poplítea. A ocorrência em veias é muito rara, e sua etiologia é desconhecida. Clinicamente, apresenta-se como isquemia, trombose ou dor a depender do território acometido. Apresentamos o caso de um paciente masculino jovem referindo nódulo no braço esquerdo. A angiorressonância magnética do membro mostrou lesão cística em contato com a veia basílica, com conteúdo homogêneo e sem realce pós-contraste. Foi realizada ressecção da lesão em bloco com o segmento venoso envolvido. O estudo anatomopatológico foi sugestivo de cisto de adventícia de veia basílica.


Abstract Cystic adventitial disease is a rare entity that most often involves the popliteal artery. It rarely occurs in veins. Its etiology is unknown. Clinically, it presents with ischemia, thrombosis or pain, depending on the vessel affected. Here we present the case of a young male with a nodule in the left arm. Magnetic resonance angiography showed a cystic lesion in contact with the basilic vein, with homogenous content without post-contrast enhancement. The lesion was resected en bloc together with the venous segment involved. The results of microscopic analysis were suggestive of basilic vein cystic adventitial disease.


Subject(s)
Humans , Male , Adult , Epidermal Cyst/diagnostic imaging , Popliteal Artery/anatomy & histology , Popliteal Artery/diagnostic imaging
11.
Acta cir. bras ; 28(11): 794-799, Nov. 2013. ilus, tab
Article in English | LILACS | ID: lil-695961

ABSTRACT

PURPOSE: To assess venous hemodynamics and quality of life at lest five years after varicose vein stripping. METHODS: We conducted a prospective study with 39 patients (63 limbs) with primary lower limbs varicose veins. Preoperatively, all patients were subjected to clinical evaluation, duplex ultrassound, air plethysmography (APG), and CIVIQ questionnaire of quality of life. By APG, venous filling index (VFI), ejection fraction (EF), and residual volume fraction (RVF) were determined. CIVIQ addresses four domains in course of 20 questions, including states of physical, social, and psychological well-being, and pain level. Varicose veins were treated by standard venous stripping. At least five years after surgery (77.9 ± 10.9 months), patients were reassessed and had clinical examination, duplex ultrasound, APG, and CIVIQ repeated. No late follow-up data was available for 24 patients. RESULTS: Preoperative and late postoperative VFI levels were similar, whereas EF (P=0.05) and RVF (P=0.01), as hemodynamic variables, significantly improved following surgery. In the late postoperative period, overall CIVIQ scores were significantly lower (P=0.005), as were scores in all four domains: pain (P=0.001), physical (P=0.007), social (P=0.008), and psychological (P= 0.05). CONCLUSION: In a small prospective cohort, improvements in venous hemodynamics and in quality of life of patients submitted to standard varicose veins stripping were maintained five years after the procedure.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Hemodynamics , Quality of Life , Saphenous Vein/surgery , Varicose Veins/surgery , Follow-Up Studies , Plethysmography , Postoperative Period , Preoperative Period , Prospective Studies , Reference Values , Stroke Volume , Surveys and Questionnaires , Time Factors , Treatment Outcome , Varicose Veins/physiopathology
12.
Acta cir. bras ; 28(6): 441-446, June 2013. ilus
Article in English | LILACS | ID: lil-675579

ABSTRACT

PURPOSE: To investigate the protective effects of ischemic pre and postconditioning, as well as the association of both methods, in skeletal muscle injury produced by ischemia and reperfusion in rats. METHODS: An experimental study was designed using 40 Wistar rats divided in four groups (n=10): Control - rats submitted to ischemia for 240 minutes (min) and reperfusion for 60 min; Ischemic preconditioning (Pre) - animals submitted to three cycles of clamping and releasing the aorta for five min before being submitted to the ischemia/reperfusion procedure; Ischemic postconditioning (Post) - rats submitted to three cycles of clamping and releasing the aorta for one min after the 240-minute ischemic phase; Ischemic pre and postconditioning (Pre-post) - animals submitted to the same procedures of Pre and Post groups. Skeletal muscle injury was evaluated by measuring serum levels of aspartate aminotransferase (AST), lactate dehydrogenase (LDH) and creatine phosphokinase (CPK); and muscular levels of malondialdehyde (MDA) and glycogen. RESULTS: AST levels were significantly higher in Pre and Pre-post groups (P<.01). There were no differences in LDH and CPK levels. Muscular MDA levels were similar. Glycogen levels were significantly higher in Pre and Pre-post groups (P<.01). CONCLUSIONS: Both preconditioning and its association with postconditioning had a protective effect by avoiding glycogen depletion in skeletal muscle in rats submitted to ischemia and reperfusion. Association of pre and postconditioning did not show advantage compared to preconditioning alone. Postconditioning alone did not show protective effect.


Subject(s)
Animals , Male , Rats , Ischemic Postconditioning/methods , Ischemic Preconditioning/methods , Muscle, Skeletal/blood supply , Reperfusion Injury/prevention & control , Aspartate Aminotransferases/blood , Creatine Kinase/blood , Disease Models, Animal , Glycogen/analysis , L-Lactate Dehydrogenase/blood , Malondialdehyde/analysis , Random Allocation , Rats, Wistar , Reproducibility of Results , Reperfusion Injury/blood , Time Factors
13.
J. vasc. bras ; 9(3): 164-167, Sept. 2010. ilus
Article in English | LILACS | ID: lil-578786

ABSTRACT

We present the case of aorto-iliac aneurysm in a patient with chronic renal failure requiring dialysis who were treated with an endovascular stent graft and, later on, submitted to kidney transplantation. A 53-year-old male with renal failure requiring dialysis presented with an asymptomatic abdominal aorto-iliac aneurysm measuring 5.0cm of diameter. He was treated with endovascular repair technique, being used an endoprosthesis Excluder®. After four months, he was successfully submitted to kidney transplantation (dead donor), with anastomosis of the graft renal artery in the external iliac artery distal to the endoprosthesis. The magnetic resonance imaging, carried out 30 days after the procedure, showed a good positioning of the endoprosthesis and adequate perfusion of the renal graft. In the follow-up, the patient presented improvement of nitrogenous waste, good positioning of the endoprosthesis without migration or endoleak. The endovascular repair of aorto-iliac aneurysm in a patient with end-stage renal failure under hemodialysis treatment showed to be feasible, safe and efficient, as it did not prevent the success of the posterior kidney transplantation.


Apresentamos o caso de aneurisma aortoilíaco em um paciente com insuficiência renal crônica dialítica tratado com uma endoprótese vascular, sendo, após, submetido a transplante renal. Um homem de 53 anos com insuficiência renal dialítica apresentava um aneurisma abdominal aortoilíaco assintomático com 5,0cm de diâmetro. Foi tratado com técnica endovascular com uma endoprótese Excluderâ. Após quatro meses, foi submetido a transplante renal (doador cadáver) com sucesso, com anastomose da artéria renal do enxerto na artéria ilíaca externa distal à endoprótese. A ressonância magnética 30 dias após o procedimento mostrou a endoprótese bem posicionada e o enxerto renal bem perfundido. No seguimento, o paciente evoluiu com melhora das escórias nitrogenadas, bom posicionamento da endoprótese, sem migração ou endoleak. O reparo endovascular do aneurisma aortoilíaco em paciente com insuficiência renal terminal em hemodiálise mostrou-se exequível, seguro e eficaz, e não comprometeu o sucesso do transplante renal posterior.


Subject(s)
Humans , Male , Middle Aged , Aortic Aneurysm/surgery , Renal Insufficiency, Chronic/therapy , Blood Vessel Prosthesis/classification , Kidney Transplantation/adverse effects , Chronic Disease , Time Factors
15.
Rev. bras. cir. cardiovasc ; 24(3): 312-317, jul.-set. 2009. ilus
Article in English | LILACS | ID: lil-533259

ABSTRACT

OBJECTIVE: To investigate the possible role of apoptosis on brief distensions of human saphenous veins at different pressures. METHODS: Fresh isolated grafts of human saphenous vein were assigned as control or distended (D) for fifteen seconds at 100, 200 and 300 mmHg. The degree of apoptotic caspases 3, 8, 9 and anti-apoptotic protein Bcl-2 expression were assessed by immunohistochemistry. RESULTS: Fresh isolated segments of distended human saphenous veins presented similar apoptotic protein expression when compared with control veins. However, the Bcl-2 expression was significantly higher in the 300 mmHg distended segments compared with the control vein. CONCLUSION: These findings show that intact segments of human saphenous veins submitted to distensions at different pressures have similar apoptotic proteins expression when compared with non-distended control veins. Therefore, brief distensions commonly performed during surgical harvesting do not trigger apoptosis, and probably are not involved on the physiopathological mechanisms that lead to graft failure


OBJETIVO: Investigar o possível papel da apoptose em distensões breves de veias safenas humanas em diferentes pressões. MÉTODOS: Segmentos frescos isolados de veia safena humana foram distribuídos em 4 grupos: controle ou distendidos (D) por quinze segundos a 100, 200 e 300 mmHg. O grau de apoptose das caspases 3, 8, 9 e expressão da proteína anti-apoptótica Bcl-2 foram avaliados por imuno-histoquímica. RESULTADOS: Segmentos frescos distendidos isolados de veias safenas humanas apresentaram expressão protéica para apoptose similar às veias controle. No entanto, a expressão de Bcl-2 foi significativamente maior nos segmentos distendidos a 300 mmHg, quando comparados à veia controle. CONCLUSÃO: Estes achados demonstram que segmentos intactos de veias safenas humanas submetidos a distensões em diferentes pressões têm expressão de proteínas apoptóticas similares quando comparados com veias controle nãodistendidas. Por conseguinte, breves distensões comumente realizadas durante a coleta cirúrgica não ativam o processo de apoptose e, provavelmente, não estão envolvidas em mecanismos fisiopatológicos que levam à falência do enxerto


Subject(s)
Humans , Apoptosis/physiology , Coronary Artery Bypass , Stress, Mechanical , Saphenous Vein/metabolism , Caspase 9/metabolism , /metabolism , /metabolism , Pressure , /metabolism , Regional Blood Flow/physiology , Saphenous Vein/pathology
16.
Acta cir. bras ; 23(supl.1): 151-156, 2008. ilus, graf, tab
Article in English | LILACS | ID: lil-483138

ABSTRACT

PURPOSE: To assess the most frequent deposition site of mural thrombi in infrarenal abdominal aorta aneurisms, as well as the route of the residual lumen. METHODS: Assessment of CT scan images from 100 patients presenting asymptomatic abdominal aorta aneurism, and followed at HC-FMRP-USP. RESULTS: In 53 percent of the cases the mural thrombus was deposited on the anterior wall; from these, in 22 percent, the residual lumen described a predominantly right sided route; in 22 percent, a left sided route; on the mid line in 5 percent; and crossing over the mid line in 1 percent. In 23 percent, the deposition of thrombi was concentric. In 11 percent it occured on the posterior wall; from these, in 5 percent, the route of the residual anterior lumen was predominantly right sided; in 5 percent, left sided; and crossed over the mid line in 1 percent. In 13 percent complex morfological deposition patterns were found. CONCLUSION: Mural thrombi formation was predominantly found on the anterior wall of the aneurismatic mass, with the route of the residual lumen projecting towards the posterior wall.


OBJETIVOS: Avaliar o local mais freqüente de deposição do trombo mural em aneurismas de aorta abdominal infrarenal, bem como o trajeto da luz residual. MÉTODOS: Avaliação de tomografias de 100 pacientes do HC-FMRP-USP apresentando aneurisma de aorta abdominal assintomático. RESULTADOS: O trombo mural se deposita na parede anterior em 53 por cento dos casos, sendo que a luz residual posterior descreveu um trajeto predominantemente à direita em 22 por cento dos casos, à esquerda em 22 por cento, na linha mediana em 5 por cento e cruzando da direita para a esquerda em 4 por cento. 23 por cento dos casos apresentaram deposição concêntrica do trombo e 11 por cento apresentaram deposição na parede posterior, sendo o trajeto da luz residual anterior predominante a direita em 5 por cento dos casos, a esquerda em 5 por cento e cruzando a linha mediana em 1 por cento. Padrões morfológicos complexos de deposição do trombo foram encontrados em 13 por cento dos casos. CONCLUSÃO: A formação do trombo mural predominou na parede anterior da massa aneurismática, com o trajeto da luz residual se projetando para a parede posterior.


Subject(s)
Female , Humans , Male , Aortic Aneurysm, Abdominal , Heart Diseases , Thrombosis , Aortic Rupture , Tomography, X-Ray Computed
17.
J. vasc. bras ; 6(2): 182-185, jun. 2007. ilus
Article in Portuguese | LILACS | ID: lil-462280

ABSTRACT

Homem de 78 anos de idade, portador de múltiplas morbidades clínicas deu entrada na emergência com um aneurisma de aorta abdominal justa-renal em condições hemodinâmicas estáveis. A tomografia computadorizada caracterizou aneurisma de 6 cm de diâmetro, e a distância do colo proximal do aneurisma era de 5 mm em relação à artéria renal direita e 28 mm à esquerda. Em virtude das condições clínicas do paciente, optou-se pelo reparo endovascular, mas previamente fez-se uma derivação ilíaco-renal direita com enxerto de politetrafluoretileno, via retroperitoneal para se criar um colo proximal adequado. Após quatro dias, o aneurisma de aorta abdominal foi corrigido colocando-se uma endoprótese Excluder® sem intercorrências. O seguimento pós-operatório evidenciou boa perfusão do rim esquerdo e ausência de migração ou endoleak da endoprótese. Este caso ilustra a combinação de técnicas para tornar possível o reparo de aneurisma de aorta abdominal justa-renal em pacientes de alto risco cirúrgico e anatomia desfavorável.


A 78-year-old man with a juxtarenal abdominal aortic aneurysm and several comorbid conditions was admitted at the emergency room in hemodynamically stable conditions. Computed tomography revealed an aneurysm measuring 6 cm in diameter beginning 28 mm below the left renal artery and 5 mm below the right renal artery. Because of the patient's clinical status, a bypass from the right iliac artery to the right renal artery was performed through a retroperitoneal approach using a polytetrafluoroethylene vascular graft. Four days later, an endovascular aneurysm repair was successfully performed using an Excluder® stent-graft. Postoperative follow-up showed good left renal perfusion and no migration or endoleak. This case illustrates the effectiveness of combining open and endovascular techniques to repair juxtarenal abdominal aortic aneurysm in high-risk patients with unfavorable anatomy.


Subject(s)
Humans , Male , Aged , Aortic Aneurysm, Abdominal/surgery , Aortic Aneurysm, Abdominal/complications , Aortic Aneurysm, Abdominal/diagnosis , Renal Artery/surgery , Blood Vessel Prosthesis/standards , Blood Vessel Prosthesis , Angiography/methods , Angiography
18.
Rev. bras. cir. cardiovasc ; 22(1): 87-95, jan.-mar. 2007. ilus, graf
Article in Portuguese | LILACS | ID: lil-454632

ABSTRACT

As células endoteliais vasculares estão expostas a uma variedade de forças mecânicas in vivo, resultantes do fluxo sangüíneo pulsátil. Dentre essas forças, destacam-se: forças de cisalhamento, tangenciais à parede do vaso, produzidas pelo atrito com o fluxo sangüíneo viscoso, tensão de complacência da parede vascular e a pressão hidrostática do conteúdo sangüíneo no interior da vasculatura. Diversos autores estudaram as alterações hemodinâmicas, funcionais e morfológicas em veias safenas humanas causadas por esses tipos de forças com resultados conflitantes. A motivação dessa revisão foi analisar dados da literatura e alguns dados experimentais do nosso laboratório. Os aspectos revistos são: 1) Respostas endoteliais e regulação gênica causadas pelo shear stress; 2) Efeitos da pressão hidrostática na morfologia da célula endotelial, expressão gênica da superfície celular endotelial e proliferação das células endoteliais, 3) Efeitos da tração no endotélio de veias safenas humanas.


Vascular endothelial cells are exposed to a variety of in vivo mechanical forces, specifically, shear stress for the blood flow, tensile stress from the compliance of the vessel wall and the hydrostatic pressure from containment of blood within inside the vasculature. Many authors studied hemodynamic, functional and morphological human saphenous veins alterations caused by these different forces with conflictant results. This review text was motivated with the specific aim of analyze literature data and some experimental data carried out in our laboratory. The adopted review subjects were: 1) Endothelial responses and gene regulation to shear stress; 2) Effects of the hydrostatic pressure in the endothelial cell morphology, gene expression of the endothelial cellular surface and proliferation of endothelial cells; 3) Effects of the traction on the human saphenous vein endothelium.


Subject(s)
Humans , In Vitro Techniques , Myocardial Revascularization , Saphenous Vein , Endothelium , Nitric Oxide
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