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      Fatores de morbimortalidade na cirurgia eletiva do aneurisma da aorta abdominal infra-renal: experiência de 134 casos Translated title: Morbidity and mortality factors in the elective surgery of infrarenal abdominal aortic aneurysm: a case study with 134 patients

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          Abstract

          CONTEXTO: O tratamento cirúrgico convencional do aneurisma da aorta abdominal (AAA) infra-renal pode resultar em complicações graves. A fim de otimizar os resultados na evolução do tratamento, é importante que sejam identificados os pacientes predispostos a determinadas complicações e instituídas condutas preventivas. OBJETIVOS: Avaliar a taxa de mortalidade operatória precoce, analisar as complicações pós-operatórias e identificar os fatores de risco relacionados com a morbimortalidade. MÉTODO: Foram analisados 134 pacientes com AAA infra-renal submetidos a correção cirúrgica eletiva no período de fevereiro de 2001 a dezembro de 2005. RESULTADOS: A taxa de mortalidade foi de 5,2%, sendo secundária principalmente a infarto agudo de miocárdio (IAM) e isquemia mesentérica. As complicações cardíacas foram as mais freqüentes, seguidas das pulmonares e renais. A presença de diabetes melito (DM), insuficiência cardíaca congestiva (ICC), insuficiência coronariana (ICO) e cintilografia miocárdica positiva para isquemia estiveram associadas às complicações cardíacas. A idade avançada, a doença pulmonar obstrutiva crônica (DPOC) e a capacidade vital forçada reduzida aumentaram os riscos de atelectasia e pneumonia. História de nefropatia, tempo de pinçamento aórtico prolongado e níveis de uréia elevados aumentaram os riscos de insuficiência respiratória aguda (IRA). A isquemia dos membros inferiores esteve associada ao tabagismo e à idade avançada, e a maior taxa de mortalidade, à presença de coronariopatia, tempos prolongados de pinçamento aórtico e de cirurgia. CONCLUSÃO: A taxa de morbimortalidade esteve compatível com a literatura nacional e internacional, sendo secundária às complicações cardíacas, respiratórias e renais. Os fatores de risco identificados no pré e transoperatório estiveram relacionados com essas complicações.

          Translated abstract

          BACKGROUND: Conventional surgical treatment of infrarenal abdominal aortic aneurysm (AAA) can result in serious complications. To optimize treatment outcome it is important to identify patients at risk of having complications and implement prophylaxis. OBJECTIVES: To analyze early surgical mortality rate and postsurgical complications, and to identify risk factors related to morbidity and mortality. METHOD: A total of 134 patients with infrarenal AAA submitted to elective surgical correction from February 2001 to December 2005 were analyzed. RESULTS: The mortality rate (5.2%) was secondary mainly to acute myocardial infarction and intestinal ischemia. Heart-related complications were the most frequent, followed by lung and kidney complications. Presence of diabetes mellitus, congestive heart failure, coronary artery disease, and scintigraphy suggestive of ischemia were related to cardiac complications. Advanced age, chronic obstructive lung disease and reduced forced vital capacity were related to higher risks of atelectasis and pulmonary infection. Presence of renal failure, prolonged aortic clamping and high urea rates were related to acute renal failure. Smoking and advanced age were associated with lower limb ischemia. Presence of obstructive coronary insufficiency and prolonged aortic clamping and surgery time were associated with higher mortality rate. CONCLUSION: The morbidity and mortality rate was compatible with data found in the national and international literature, secondary to cardiac, pulmonary and kidney complications. Identified risk factors before and during the surgery were related to these complications.

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          Applied Logistic Regression

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            Multicenter prospective study of nonruptured abdominal aortic aneurysm. Part II. Variables predicting morbidity and mortality.

            A previous article (Part I) described the patient population and operative management of 666 patients who had surgery for nonruptured abdominal aortic aneurysms. This article details the perioperative complications and, by chi-square and logistic regression analysis, identifies the variables that are associated with each complication. In summarizing the results (below) the incidence of each complication is listed, along with the predictive risk factors in parentheses that have significance levels less than 0.05. Vascular morbidity data are as follows: intraoperative bleeding, 4.8%; postoperative bleeding requiring transfusion, 2.3% or repeat operation, 1.4% (large volume of blood transfusion and/or use of an autotransfusion device); intraoperative limb ischemia, 3.5%; graft thrombosis, 0.9% (femoropopliteal disease and/or distal anastomosis at the femoral level); distal thromboembolism, 3.3% (male sex, femoral popliteal disease, and/or intraoperative graft thrombosis); amputation, 1.2%; graft infection, 1 case. General morbidity data are as follows: cerebrovascular event, 0.6%; paraplegia, 1 case; cardiac event, 15.1% (age, previous episode of congestive heart failure, and/or electrocardiogram [ECG] evidence of a previous myocardial infarction); myocardial infarction, 5.2% (advancing age, angina, and/or prolonged aortic cross-clamp time); congestive heart failure, 8.9% (previous history of congestive heart failure, ECG evidence of ischemia, and/or chronic obstructive lung disease); arrhythmia requiring treatment, 10.5% (preoperative ventricular premature beats and/or respiratory failure requiring ventilation for more than 48 hours); new arrhythmia, 8.4% (angina and/or chronic obstructive lung disease); respiratory failure, 8.4% (chronic obstructive lung disease, large volume of blood transfused, and/or occurrence of postoperative bleeding, cerebrovascular accident, congestive heart failure, or myocardial infarction); renal damage with rise in creatinine or blood urea nitrogen, 5.4% and/or renal failure requiring dialysis, 0.6% (elevated preoperative creatinine, suprarenal aortic cross-clamping, and/or renal vein ligation); diarrhea without evidence of ischemia colitis, 7.1% and ischemic colitis, 0.6% (pelvic flow interrupted); prolonged ileus, 11.0% (aortoiliac occlusive disease, deterioration of renal function, prolonged ventilation, and/or preoperative history of angina); superficial wound infection, 1.5% and deep infection, 0.5% (femoral anastomosis and/or female sex); coagulopathy, 1.1% (large volume of blood transfused).(ABSTRACT TRUNCATED AT 400 WORDS)
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              Mortality from ruptured abdominal aortic aneurysm in Wales.

              The aim of this study was to identify the incidence of, and mortality in, patients with a ruptured abdominal aortic aneurysm (AAA) reaching hospital alive in Wales. Patients who presented with a ruptured AAA between September 1996 and August 1997 were analysed. Data were collected prospectively by an independent body, observing strict confidentiality. Some 233 patients with a confirmed ruptured AAA were identified, giving an incidence of eight per 100 000 total population. Some 133 patients (57 per cent) underwent attempted operative repair; 85 (64 per cent) of these died within 30 days. Of the 233 patients, 92 were admitted under the care of a vascular surgeon and 141 under a non-vascular surgeon. Vascular surgeons operated on 82 patients (89 per cent), of whom 50 (61 per cent) died, whereas non-vascular surgeons operated on 51 patients (36 per cent), of whom 35 (69 per cent) died. This study is unique as it is an independent prospective study of mortality in patients with a ruptured AAA who reached hospital alive. Mortality was independent of the operating surgeon, but vascular surgeons turned down significantly fewer patients than non-vascular surgeons (11 versus 64 per cent, P < 0.001).
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                jvb
                Jornal Vascular Brasileiro
                J. vasc. bras.
                Sociedade Brasileira de Angiologia e de Cirurgia Vascular (SBACV) (Porto Alegre )
                1677-7301
                September 2008
                : 7
                : 3
                : 214-224
                Affiliations
                [1 ] Santa Casa de Misericórdia de São Paulo Brazil
                [2 ] Sociedade Brasileira de Angiologia e de Cirurgia Vascular
                [3 ] Santa Casa de Misericórdia de São Paulo Brazil
                Article
                S1677-54492008000300006
                10.1590/S1677-54492008000300006
                81e7b7f9-2b3f-4b6e-927f-03211a925e78

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1677-5449&lng=en
                Categories
                CARDIAC & CARDIOVASCULAR SYSTEMS
                PERIPHERAL VASCULAR DISEASE
                SURGERY

                Surgery,Cardiovascular Medicine
                Abdominal aortic aneurysm,morbidity,mortality,elective surgical procedures,risk factors,Aneurisma da aorta abdominal,morbidade,mortalidade,procedimentos cirúrgicos eletivos,fatores de risco

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