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1.
Eur J Vasc Endovasc Surg ; 41(1): 54-60, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20961775

RESUMO

INTRODUCTION: So far the only endovascular option to treat patients with thoraco abdominal aortic aneurysms is the deployment of branched grafts. We describe a technique consisting of the deployment of standard off-the- shelf grafts to treat urgent cases. MATERIAL AND METHODS: The sandwich technique consists of the deployment of ViaBahn chimney grafts in combination with standard thoracic and abdominal aortic stent grafts. The chimney grafts are deployed using a transbrachial and transaxillary access. These coaxial grafts are placed inside the thoracic tube graft. After deployment of the infrarenal bifurcated abdominal graft a bridging stent-a short tube graft is positioned inside the thoracic graft further stabilizing the chimney grafts. RESULTS: 5 patients with symptomatic thoraco abdominal aneurysms were treated. There was one Type I endoleak that resolved after 2 months. In all patients 3 stentgrafts had to be used When possible all visceral and renal branches were revascularized. A total number of 17 arteries were reconnected with covered branches. During follow up we lost one target vessel the right renal artery. CONCLUSION: The sandwich technique in combination with chimney grafts permits a total endovascular exclusion of thoraco abdominal aortic aneurysms. In all cases off-the shelf products and grafts could be used. The number of patients treated so far is still too small to draw further more robust conclusions with regard to long term performance and durability.


Assuntos
Aneurisma da Aorta Torácica/cirurgia , Implante de Prótese Vascular/métodos , Prótese Vascular , Emergências , Anticoagulantes/administração & dosagem , Aneurisma da Aorta Torácica/diagnóstico por imagem , Materiais Revestidos Biocompatíveis , Heparina/administração & dosagem , Humanos , Artéria Mesentérica Superior/cirurgia , Politetrafluoretileno , Complicações Pós-Operatórias , Desenho de Prótese , Radiografia , Artéria Renal/cirurgia , Medição de Risco , Stents
2.
Eur J Vasc Endovasc Surg ; 42(5): 627-30, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21788143

RESUMO

BACKGROUND: Significant morbidity and mortality are related to conventional aortic replacement surgery. Endovascular debranching techniques, fenestrated or branched endografts are time consuming and costly. OBJECTIVE: We alternatively propose to use endovascular approach with parallel grafts for debranching of aortic arch. METHODS: Under general anesthesia, 12 F sheaths were inserted in the femoral, axillary and common carotid arteries for vascular accesses. ViaBahn grafts 10 - 15 cm in length were placed into the aortic arch from right common carotid, left common carotid and left axillary arteries, until the tip of each graft reached into the ascending aorta. Through one femoral artery, the aortic stent -graft was positioned and delivered. Soon after, the parallel grafts were sequentially delivered. Self-spanding Wallstents(R) were used for parallel grafts reinforcement. Ballooning was routinely used for parallel grafts and rarely for aortic graft. RESULTS: This technique was used in 2 cases. The first one was a lady with 72 years old, with an aortic retrograde dissection from left subclavian artery and involving remaining arch branches. Through right common carotid artery a stent-graft was placed in the ascending aorta and through the left common carotid artery a ViaBahn was inserted parallel to the former. A thoracic endograft then covered all the aortic arch dissection extending into the ascending aorta close to the sinu -tubular junction. The second case was a 82 year old male patient with a 7 cm aortic arch aneurysm. Through both common carotid arteries ViaBahn grafts were introduced and positioned into the ascending aorta. Soon after, the deployment of the thoracic stent graft covered all parallel grafts of the aortic arch, excluding the aneurysm. Both cases did not have neurologic or cardiac complications and were discharged 10 days after the procedure. CONCLUSIONS: This technique may be a good minimal invasive off-the-shelf technical option for aortic arch ''debranching''. More data and further improvements are required before this promising technique can be widely advocated.


Assuntos
Aneurisma da Aorta Torácica/cirurgia , Implante de Prótese Vascular , Procedimentos Endovasculares , Idoso , Idoso de 80 Anos ou mais , Aneurisma da Aorta Torácica/complicações , Aneurisma da Aorta Torácica/patologia , Feminino , Humanos , Masculino
3.
Ann Vasc Surg ; 24(3): 367-72, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19896796

RESUMO

INTRODUCTION: In a prospective trial we tested whether adjunctive intraoperative stem cell treatment in patients with critical limb ischemia (CLI) can be performed safely in combination with bypass surgery and/or interventional treatment. The end point of our study was the safety and integrity of a novel point-of-care system used in patients with CLI. METHODS: We included only patients with CLI and tissue loss according to Rutherford categories 4-6. The Harvest Bone Marrow Aspirate Concentrate System consists of an automated, microprocessor-controlled dedicated centrifuge with decanting capability and the accessory BMAC Pack for processing a patient's bone marrow aspirate (BMA). The centrifuge is portable and enables BMA to be rapidly processed in the operating room to provide an autologous concentrate of nucleated cells for immediate injection. The surgeon aspirated 120 ml BMA from the iliac crest. RESULTS: Eight consecutive patients were treated according to the study protocol. The mean follow-up period was 9.2 months (range 2-18). Stem cells were always injected during the final revascularization attempt. One minor amputation and two major amputations were required. In five of eight patients there was a discrete increase in the ankle-brachial index post-stem cell treatment. The dose of stem cells after centrifugation was 17.2 (range 13.8-54.2)x10E6 CD34-positive cells and 7.8 (range 1.8-35.9)x10E6 CD133-positive cells. The injected dose of VEGFR-2-coexpressing stem cells was 0.5-5.7x10E4. CONCLUSION: We were able to show that the buffy coat preparation using a point-of-care system is a simple and fast method to enrich stem cells from BMAs. This automated system gives high recovery rates and good reproducibility.


Assuntos
Transplante de Medula Óssea/instrumentação , Isquemia/cirurgia , Extremidade Inferior/irrigação sanguínea , Sistemas Automatizados de Assistência Junto ao Leito , Transplante de Células-Tronco/instrumentação , Procedimentos Cirúrgicos Vasculares , Antígeno AC133 , Adulto , Idoso , Idoso de 80 Anos ou mais , Amputação Cirúrgica , Antígenos CD/análise , Antígenos CD34/análise , Transplante de Medula Óssea/efeitos adversos , Separação Celular/instrumentação , Sobrevivência Celular , Centrifugação/instrumentação , Estado Terminal , Desenho de Equipamento , Glicoproteínas/análise , Humanos , Ílio/química , Ílio/citologia , Ílio/imunologia , Período Intraoperatório , Salvamento de Membro , Pessoa de Meia-Idade , Peptídeos/análise , Estudos Prospectivos , Reoperação , Transplante de Células-Tronco/efeitos adversos , Fatores de Tempo , Resultado do Tratamento , Receptor 2 de Fatores de Crescimento do Endotélio Vascular/análise , Procedimentos Cirúrgicos Vasculares/efeitos adversos
4.
J Cardiovasc Surg (Torino) ; 49(1): 67-71, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18212689

RESUMO

The aim of this study was to report an assisted or totally laparoscopic approach for renal revascularization in patients with congenital renal vascular anomalies during endovascular abdominal aneurysm repair (EVAR). In three patients with an ectopic main or a large accessory renal artery (>3mm) arising from the aneurysm, laparoscopic exposure of the target renal artery and the ipsilateral iliac bifurcation was performed. In two patients a small incision was made over the area between the iliac bifurcation and the renal target vessel in order to facilitate the anastomotic procedure. In the third patient a totally laparoscopic bypass between a big left inferior renal polar artery and the left common femoral artery was carried out. In all patients the aneurysm was successfully excluded using an endovascular graft. Technical success was achieved in all three patients. The mean total operative time was 126 min (range 110-152 min). The mean hospital length of stay (HLS) was 3.5 days. Renal function of the patients remained unchanged. All bypasses were found to be patent and endoleaks was not observed at 6-month follow-up. Laparoscopic assisted or totally laparoscopic renal revascularization may increase the applicability of EVAR in complex abdominal aortic aneurysms.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Implante de Prótese Vascular , Prótese Vascular , Laparoscopia , Artéria Renal/cirurgia , Procedimentos Cirúrgicos Vasculares/métodos , Idoso , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Aneurisma da Aorta Abdominal/fisiopatologia , Aortografia , Implante de Prótese Vascular/instrumentação , Estudos de Viabilidade , Feminino , Seguimentos , Humanos , Artéria Ilíaca/cirurgia , Testes de Função Renal , Tempo de Internação , Masculino , Artéria Renal/anormalidades , Artéria Renal/diagnóstico por imagem , Artéria Renal/fisiopatologia , Fatores de Tempo , Resultado do Tratamento , Grau de Desobstrução Vascular , Procedimentos Cirúrgicos Vasculares/instrumentação
5.
J Cardiovasc Surg (Torino) ; 48(1): 39-44, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17308520

RESUMO

The following paper gives an overview of the current status of stem cell use in vascular medicine. The role of endothelial progenitor cells (EPCs) is discussed. Different approaches to use cellular based concepts are outlined: among these are the treatment of patients with critical ischemia with bone marrow derived mononuclear cells as well as our own experience with purified and highly selected CD133 and CD34 cells. The pro and cons of these different treatment regimens are discussed. An outlook is given discussing a combination of gene therapy and stem cell injections. The clinical and laboratory results of 15 patients with end-stage critical ischemia are discussed with implications for future clinical trials. We conclude that, despite all open questions, the outlook for EPC-based therapies for tissue ischemia and blood vessel repair appears promising.


Assuntos
Isquemia/cirurgia , Perna (Membro)/irrigação sanguínea , Transplante de Células-Tronco/métodos , Humanos , Índice de Gravidade de Doença , Resultado do Tratamento
6.
J Cardiovasc Surg (Torino) ; 48(5): 659-65, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17989637

RESUMO

Open repair for aortic pathology requires clamping of the aorta. Aortic clamp time is an important predictor of outcome following open aortic reconstruction. In an attempt to decrease aortic clamp time, an aortic stapler was developed. The purpose of this clinical study was to evaluate the performance of the aortic stapler in the creation of a sutureless aorta-graft anastomosis. A single-center, intention to treat study was performed. Data were prospectively collected and retrospectively analyzed. The study protocol was approved by the institutional review board and all patients gave informed consent. Ten patients were analyzed. Patients with infrarenal abdominal aortic aneurysms and aorto-iliac occlusive disease who were candidates for elective, open aortic repair were included. All proximal anastomoses were completed in an end-to-end fashion using the aortic stapler. Time to complete the anastomosis (defined as time required to achieve anastomotic integrity and hemostasis) was the primary endpoint. Secondary endpoints were patency and anastomotic complications (pseudoaneurysm, hematoma, fistula) as diagnosed by duplex evaluation at one month follow-up. The aortic stapler was successfully used in all cases. Open aortic staplers of 14, 16, and 18 mm diameters were used in the procedures. Either woven dacron tube grafts or a bifurcated prosthesis were mounted on the staplers. In all cases only the proximal anastomosis was performed using the open aortic stapler. The distal anastomosis was sutured in a conventional manner using a continuous prolene suture. There were no stapler related deaths or anastomotic complications observed. The aortic stapler was successfully used in all cases. The mean time to complete the stapled proximal anastomosis was 10.2 min (7-18 ). The mean number of additional sutures required with the aortic stapler was 1.20 (0-6). Mean total aortic clamping time was 50.1 min (22-66). Duplex and CT imaging obtained at one-month confirmed the integrity of the proximal anastomosis as well as the patency of the vascular grafts. The aortic stapler can create a uniform staple line between a vascular prosthesis and the aortic wall. It is a simple, safe, rapid and reliable means for creation of a sutureless, end-to-end anastomosis in patients with aortic pathology, however, more patients and longer follow-up are required prior to concluding superiority to conventional suturing.


Assuntos
Aorta/cirurgia , Aneurisma da Aorta Abdominal/cirurgia , Arteriopatias Oclusivas/cirurgia , Implante de Prótese Vascular/instrumentação , Grampeadores Cirúrgicos , Idoso , Anastomose Cirúrgica/instrumentação , Aorta/patologia , Aorta/fisiopatologia , Aneurisma da Aorta Abdominal/patologia , Aneurisma da Aorta Abdominal/fisiopatologia , Arteriopatias Oclusivas/patologia , Arteriopatias Oclusivas/fisiopatologia , Implante de Prótese Vascular/efeitos adversos , Desenho de Equipamento , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Ultrassonografia Doppler Dupla , Grau de Desobstrução Vascular
7.
J Cardiovasc Surg (Torino) ; 47(5): 547-56, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17033602

RESUMO

We give an overview of different laparoscopic assisted techniques to perform aortic surgery. In a meta-analysis the paper describes the combined experience of two vascular surgical centers who together have performed more than 524 laparoscopic assisted aortic procedures. Basically the following techniques can be used to perform a laparoscopic assisted procedure: 1) transperitoneal approach (the Alimi procedure); 2) hand assisted laparoscopy (the Ferrari technique); 3) left retrocolic laparoscopic assisted; 4) combining laparoscopic assisted and total laparoscopy techniques. In all cases a transperitoneal approach was chosen to dissect the aorta. This was either accomplished directly or using a left retrocolic access originally described by Dion as the apron technique. In some cases a hand assist device was used, which permits the surgeon to introduce the non dominant hand while maintaining the pneumoperitoneum. The mortality in abdominal aortic aneurysm (AAA) patients in either center did not exceed 1.8%. ICU stay, postoperative ileus and length of stay were significantly shorter compared to patients with a full length incision. The Pisa group showed that there is still a significant reduction of operating time as well as aortic cross clamping time beyond the learning curve of the first 30 patients. The analysis of the pooled data shows that even in AAA patients the laparoscopic assisted procedure can be performed with operating times of less than 3 h and hospital stays up to 4 days, which we only know from endovascular aneurysm exclusion. This is the first publication of hand assisted laparoscopic endoaneurysm repair involving a large number of patients. The operations can be performed with expediency and safety. We can use these laparoscopic procedures to perform even complex aortic operations including suprarenal aneurysms with revascularization of the renal and visceral arteries. An outlook of future developments including stapling technology is given.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Laparoscopia , Procedimentos Cirúrgicos Vasculares/métodos , Angiografia , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Humanos , Resultado do Tratamento
8.
Acta Chir Belg ; 106(1): 36-9, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16612910

RESUMO

UNLABELLED: This paper describes our technique and results with total laparoscopic aortic aneurysm repair. MATERIAL AND METHODS: A transperitoneal left retrorenal access was used in all cases. Special laparoscopic clamps often in combination with balloon catheters were used to occlude the aorta and the renal arteries. Exactly the same techniques like in open surgery were used. Either a tube graft or a bifurcated graft,anastomosed with the iliac arteries or the femoral arteries, was implanted to exclude the aneurysm. Laparoscopic surgery is becoming a third way to perform aortic aneurysm repair. In contrast to EVAR it can offer to aneurysm patients the same definitive outcome which we obtain in open surgery.


Assuntos
Aneurisma Aórtico/cirurgia , Implante de Prótese Vascular/métodos , Laparoscopia/métodos , Anastomose Cirúrgica , Humanos , Aneurisma Ilíaco/cirurgia
9.
J Cardiovasc Surg (Torino) ; 46(4): 415-23, 2005 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16160688

RESUMO

Aortic endografting can be performed with a high initial success rate yet with the need for lifelong surveillance because of numerous long term problems. Among these graft migration, typ II endoleaks and endotension require treatment to prevent abdominal aortic aneurysm (AAA) rupture. We describe our experience with laparoscopic clipping of lumbar arteries and the inferior mesenteric artery (IMA) to prevent Type II leaks as well as with different banding procedures. Several ways to perform active graft fixation are described. Since we believe that active downsizing of the aneurysm reduces some of the intermediate term problems we go a step further and evacuate the thrombus to downsize the aneurysm to prevent longitudinal shrinkage. Laparoscopic techniques can also be used to obtain direct vascular access. This permits insertion of a thoracic endograft directly into the aorta in patients with diseased iliac vessels. Endovascular aneurysm repair (EVAR) insertion under laparoscopic navigation without contrast dye in cases with renal insufficiency is described. We describe our technique of total laparoscopic conversion after failed endografting. Future perspectives and preliminary experience with an aortic stapler are discussed.


Assuntos
Angioscopia , Aneurisma da Aorta Abdominal/cirurgia , Implante de Prótese Vascular/métodos , Laparoscopia , Idoso , Humanos , Desenho de Prótese , Técnicas de Sutura/instrumentação , Resultado do Tratamento
10.
Free Radic Biol Med ; 13(2): 95-100, 1992.
Artigo em Inglês | MEDLINE | ID: mdl-1516843

RESUMO

To assess whether oxidative stress contributes to the ischemia/reperfusion injury of aortic surgery, the contents of alpha-tocopherol, alpha-tocopheryl quinone, ascorbate, lipid-derived malondialdehyde, protein thiols, cholesterol, and lactate were analyzed in plasma samples from 24 patients subjected to aortic crossclamping. alpha-Tocopherol, ascorbate, and protein thiols decreased during ischemia, whereas alpha-tocopheryl quinone increased in all but two cases, doubling on average in proportion to alpha-tocopherol. Upon reperfusion alpha-tocopherol, ascorbate, and protein thiols remained low, whereas alpha-tocopheryl quinone returned to the preischemic level. Lipid-derived malondialdehyde (a measure of lipid hydroperoxides) increased significantly only during reperfusion. The results suggest that oxidative stress occurs simultaneously with ischemia/reperfusion during aortic surgery, and that measurement of the tocopheryl quinone/tocopherol ratio may shed new light on the underlying pathological events.


Assuntos
Aneurisma Aórtico/cirurgia , Traumatismo por Reperfusão/sangue , Vitamina E/análogos & derivados , Vitamina E/sangue , Idoso , Antioxidantes/metabolismo , Aneurisma Aórtico/sangue , Constrição , Radicais Livres/metabolismo , Humanos , Malondialdeído/sangue , Pessoa de Meia-Idade , Traumatismo por Reperfusão/etiologia
11.
J Thorac Cardiovasc Surg ; 84(5): 704-15, 1982 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7132410

RESUMO

Between 1971 and 1982, 41 patients were operated upon for recurrent sustained ventricular tachycardia. All but three had severe coronary artery disease with a history of myocardial infarction. In 10 patients (Group I) simple aneurysmectomy with or without aorta-coronary bypass grafting was done. Thirty-one patients (Group II) had an electrophysiologically guided procedure, mainly partial or complete encircling endocardial ventriculotomy (EEV) at the earliest source of electrical activity during ventricular tachycardia. The results in the two groups indicate a clear superiority of electrophysiologically guided procedures over a simple aneurysmectomy regarding early and late disappearance of tachycardiac rhythm problems (p = 0.01); the differences between the two groups in hospital mortality (p = 0.43) and long-term survival are not significant. We compared our data with results in 160 cases of simple aneurysmectomy and 224 cases of electrophysiologically guided operations recently published in the literature. This comparison confirms the higher efficiency of mapping-guided procedures in eradicating ventricular tachycardias. The improvements in hospital and long-term survival, again, are not significant.


Assuntos
Taquicardia/cirurgia , Adulto , Doença das Coronárias/complicações , Eletrocardiografia , Feminino , Seguimentos , Aneurisma Cardíaco/cirurgia , Ventrículos do Coração/cirurgia , Humanos , Masculino , Métodos , Pessoa de Meia-Idade , Infarto do Miocárdio/complicações , Taquicardia/etiologia , Taquicardia/mortalidade
12.
J Thorac Cardiovasc Surg ; 94(6): 848-65, 1987 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-3682855

RESUMO

UNLABELLED: Between June 1978 and 1986, 93 consecutive patients underwent electrophysiologically guided operations for life-threatening recurrent sustained ventricular tachycardia mostly associated with other surgical procedures, such as left ventricular resection (aneurysmectomy) and coronary artery bypass grafting. DATA: Eighty-seven percent of the surviving patients were free of spontaneous ventricular tachycardia return or sudden death 1 year after the operation and 77% at 5 years. The instantaneous risk of ventricular tachycardia return was highest immediately after operation, declined rapidly, and by 2 weeks postoperatively had merged with the constant hazard phase, which persisted as long as the patients were observed. Endocardial resection, rather than encircling endocardial myotomy, increased the risk of spontaneous ventricular tachycardia return/sudden death. Survival rates, including hospital deaths, were 95% at 30 days, 89% at 1 year, and 70% at 5 years after operation. The most prevalent mode of death was heart failure. The absence of anterolateral left ventricular aneurysms and the use of more extended encircling incisional techniques for ventricular tachycardia ablation increased the risk of early and late death. Survival was particularly poor in that subset of patients in whom recurrent sustained ventricular tachycardia returned after operation; the most prevalent mode of death in this group was also progressive left ventricular failure. Inferences: (1) Complete and partial encircling endocardial myotomy incisions are the most effective surgical techniques for malignant ventricular tachycardia ablation. (2) Because of their adverse effects on left ventricular structure and function, the arrhythmogenic tissues have to be localized as precisely as possible, and the encompassing incisions should be kept as limited as possible. (3) The late return of ventricular tachycardia may be more related to a progressive ischemic left ventricular cardiomyopathy than to an inadequate operation.


Assuntos
Doença das Coronárias/complicações , Taquicardia/cirurgia , Estimulação Cardíaca Artificial , Procedimentos Cirúrgicos Cardíacos/métodos , Ponte Cardiopulmonar , Morte Súbita/epidemiologia , Eletrocardiografia , Endocárdio/fisiopatologia , Endocárdio/cirurgia , Ventrículos do Coração , Humanos , Métodos , Recidiva , Fatores de Risco , Taquicardia/complicações , Taquicardia/mortalidade , Taquicardia/fisiopatologia
13.
J Am Coll Surg ; 190(4): 451-7, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10757383

RESUMO

BACKGROUND: There are several laparoscopic techniques that can be used to perform a total or video-assisted aorto-femoral bypass grafting procedure. Major drawbacks of laparoscopic aortic surgery are the long operating times and the steep learning curve required for these procedures. Hand-assisted laparoscopy is a novel technique that allows surgeons to use their hands and laparoscopic instruments in the operative field while maintaining a pneumoperitoneum. STUDY DESIGN: A prospective nonrandomized study was conducted in a community medical center. Any patient with aortoiliac occlusive disease or an abdominal aortic aneurysm who was determined to be suitable for a laparoscopic aorto-femoral bypass grafting procedure was included in the study. The main outcomes measured were: operating time, aortic cross-clamp time, incision size, complications, conversion rate to an open procedure, length of stay in the ICU, and postprocedural hospital stay. A concurrent control group of 20 patients was compared with the minimally invasive group. RESULTS: Forty-one consecutive patients were scheduled for the laparoscopic operation. Conversion to an open procedure was necessary in three patients. There were two major complications, including the development of renal failure in one patient who died 28 days postoperatively. The mean postprocedural hospital stay was 4.5 +/- 2.5 days (range 2 to 15 days). The mean operating time was 163.1 +/- 38.7 minutes, including an aortic cross-clamp time of 38.3 +/- 9.7 minutes. Postoperative hospital stay and the time required in the ICU were significantly shorter after the laparoscopic procedure compared with a conventional bypass grafting procedure. CONCLUSIONS: Hand-assisted laparoscopy is a minimally invasive technique with operating times and outcomes similar to those of conventional procedures. The possibilities of this technique in patients with aortoiliac disease should be evaluated in a prospective randomized study.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Arteriopatias Oclusivas/cirurgia , Implante de Prótese Vascular/métodos , Laparoscopia/métodos , Idoso , Aorta Abdominal/cirurgia , Humanos , Artéria Ilíaca/cirurgia , Pessoa de Meia-Idade , Estudos Prospectivos , Gravação em Vídeo
14.
Surg Endosc ; 16(1): 173-6, 2002 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11961633

RESUMO

BACKGROUND: Hand-assisted laparoscopy can be used to perform aortoiliac reconstructive procedures. This study aimed to evaluate the safety and feasibility of a hand-assisted aortofemoral bypass in patients with occlusive disease using a low abdominal transverse incision to reduce postoperative respiratory problems. METHODS: In 18 patients, a modified Pfannenstiel incision was performed. A hand-assist device was inserted, and the aorta was exposed using transperitoneal laparoscopy. Tunneling was performed under laparoscopic control. The anastomosis was always performed proximally to the inferior mesenteric artery. In three patients, the proximal anastomosis had to be performed laparoscopically. The indication for surgery was occlusive disease in 16 patients and a combination of an aneurysm and aortoiliac occlusion in 2 patients. RESULTS: Conversion was required in one patient (1/18). In 13 patients (13/18), the total operating time did not exceed 180 min, and 61% of the patients (11/18) could be discharged by postoperative day 5. None of the patients died perioperatively (0/18). Complications were observed in six patients (6/18). Only one of these patients had respiratory problems (1/18). The remaining five patients had local complications such as wound healing problems. The anastomosis was sutured laparoscopically in three patients (3/18). CONCLUSIONS: Hand-assisted laparoscopy can be performed safely using a low transverse abdominal incision. In our experience this laparoscopic access can reduce the incidence of postoperative respiratory problems and incision-related complications.


Assuntos
Aorta Abdominal/cirurgia , Implante de Prótese Vascular/métodos , Artéria Femoral/cirurgia , Laparoscopia/métodos , Idoso , Anastomose Cirúrgica/métodos , Arteriopatias Oclusivas/cirurgia , Estudos de Viabilidade , Humanos , Laparoscopia/efeitos adversos , Cirurgia Vídeoassistida/métodos
15.
J Cardiovasc Surg (Torino) ; 39(1): 15-8, 1998 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-9537529

RESUMO

Rotationangioplasty and catheter atherectomy using the TEC device was performed in 33 patients with peripheral arterial occlusive disease. Thirty-five femoral or popliteal artery occlusions could be recanalized with an initial patency of 100%. After 5 years the patients were re-evaluated by clinical examination, colour duplex scanning and in 5 cases by intra-arterial angiography. According to life table analysis there was no patent femoral or popliteal vessel after 5 years in those patients treated initially for rest pain or ischemic tissue loss. 82% of those treated for claudication had a re-occluded artery. In 5 cases a major amputation was necessary. 42% of those patients who were initially treated far disabling claudication had a severe deterioration of their functional status with development of critical ischemia. In 9 of these cases reconstructive arterial surgery was required which failed in one patient with subsequent limb loss. In the retrospective study presented patients with occlusions up to 30 cm and more were treated. Combining two interventional techniques there is a high initial success rate with poor long term results. Therefore these devices should be reserved for high risk patients who would not tolerate reconstructive vascular surgery. They should not be used in patients with claudication although even extensive occlusions can be recanalized there is an imminent danger of causing significant deterioration of the patients functional status.


Assuntos
Angioplastia , Arteriopatias Oclusivas/cirurgia , Aterectomia , Artéria Femoral/cirurgia , Artéria Poplítea/cirurgia , Idoso , Angioplastia/métodos , Angioplastia/estatística & dados numéricos , Arteriopatias Oclusivas/epidemiologia , Aterectomia/métodos , Aterectomia/estatística & dados numéricos , Feminino , Seguimentos , Humanos , Tábuas de Vida , Masculino , Pessoa de Meia-Idade , Recidiva , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Grau de Desobstrução Vascular
16.
Surg Laparosc Endosc Percutan Tech ; 10(2): 76-81, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10789577

RESUMO

Descending aorta-to-femoral artery bypass is a durable procedure with excellent long-term patency rates. The operation is usually performed using a lateral thoracotomy combined with retroperitoneal tunneling of the graft. Assuming that a smaller incision would reduce the operative trauma, minimally invasive video endoscopic techniques were used to perform a thoracoscopic bypass operation. In all patients, exposure of the descending aorta was obtained using thoracoscopy. This was accomplished with a maximum of four ports. For placing the conventional side-biting aortic clamp, a 3- to 4-cm incision was necessary. Using this incision as an access port, the proximal anastomosis was sutured endoscopically. Retroperitoneal tunneling was performed using laparoscopically guided balloon dissection. Eleven consecutive patients underwent surgery. In two patients, conversion to a standard thoracotomy was necessary because of extensive intrathoracic adhesions. There were no major complications, except for one hematoma. After a mean follow-up of 9.5 months, all bypass grafts were still patent. Patients could be discharged after a mean postprocedural hospital stay of 7.4 days (range, 5-12). Thoracoscopic descending aorta-to-femoral artery bypass is an operation with excellent patency rates; however, it is a novel technique that still requires further technical improvements. Clinical studies are needed to prove the safety and efficacy of this minimally invasive technique.


Assuntos
Abdome/irrigação sanguínea , Aorta Torácica/cirurgia , Implante de Prótese Vascular/métodos , Artéria Femoral/cirurgia , Isquemia/cirurgia , Toracoscopia , Idoso , Idoso de 80 Anos ou mais , Estudos de Viabilidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
17.
Chirurg ; 68(4): 429-32, 1997 Apr.
Artigo em Alemão | MEDLINE | ID: mdl-9206640

RESUMO

The combination of abdominal aortic aneurysm (AAA) and necrosis of the lumbar vertebral bodies is often the consequence of ischemia of the lumbar arteries and local compression from the aneurysm. A patient with necrosis of lumbar vertebral bodies 2 to 4 was admitted for abdominal aneurysm repair. CT scanning revealed almost complete destruction of the second and fourth lumbar vertebral bodies. In a combined operation an orthopedic and a vascular surgical team implanted two carbonic cages with autogenous splinter of the pelvic bone and an aortic vascular graft, using a retroperitoneal approach. Three months after the operation the 61-year-old man is entirely well and without any signs of back pain. He could be fully mobilized within 3 weeks postoperatively. This case study depicts the surgical techniques and discusses the advantages of the simultaneous operation and retroperitoneal exposure.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Isquemia/cirurgia , Vértebras Lombares/irrigação sanguínea , Osteonecrose/cirurgia , Equipe de Assistência ao Paciente , Aneurisma da Aorta Abdominal/diagnóstico , Terapia Combinada , Humanos , Isquemia/diagnóstico , Vértebras Lombares/cirurgia , Masculino , Pessoa de Meia-Idade , Osteonecrose/diagnóstico , Espaço Retroperitoneal/cirurgia , Equipamentos Cirúrgicos , Resultado do Tratamento
18.
Chirurg ; 69(5): 558-62, 1998 May.
Artigo em Alemão | MEDLINE | ID: mdl-9653567

RESUMO

Transabdominal aortic replacement is the most widely accepted approach for aortic surgery. Several controlled studies report a more favorable outcome after an extraperitoneal incision, yet there are an equal number of papers with contradictory results. The aim of our study was to assess operative trauma after aortic surgery, depending on whether transperitoneal or extraperitoneal access was used. As a parameter for the extent of the surgical trauma the concentration of Interleukin 6 and acute phase proteins (CRP) was measured pre-, 6 h and 24 h after aortic surgery. One group consisted of 34 patients scheduled for aortic surgery for exclusion of an abdominal aortic aneurysm. The second group consisted of 26 patients who were operated on for aorto-iliac occlusive disease. Each group was subdivided into an equal group of patients operated on either extra- or transperitoneally. In the retroperitoneal aneurysm patients, a posterolateral access was favored, and in patients with occlusive disease an extraperitoneal anterolateral approach was chosen. As a result patients with an extraperitoneal incision and aorto-iliac occlusive disease required less postoperative respiratory support than those operated on transperitoneally. In this subgroup of patients there was a significantly reduced synthesis of Interleukin 6 and CRP. When a retroperitoneal posterolateral approach was required in aneurysm patients, there was no difference between groups. We conclude from our data that only patients with limited infrarenal aortic access can benefit, from the retroperitoneal incision in terms of a reduced immunological reaction.


Assuntos
Proteínas de Fase Aguda/metabolismo , Aneurisma da Aorta Abdominal/cirurgia , Doenças da Aorta/cirurgia , Arteriopatias Oclusivas/cirurgia , Artéria Ilíaca/cirurgia , Interleucina-6/sangue , Complicações Pós-Operatórias/imunologia , Reação de Fase Aguda/diagnóstico , Reação de Fase Aguda/imunologia , Idoso , Aneurisma da Aorta Abdominal/imunologia , Doenças da Aorta/imunologia , Arteriopatias Oclusivas/imunologia , Feminino , Humanos , Artéria Ilíaca/imunologia , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Estudos Prospectivos , Fatores de Risco
19.
Chirurg ; 61(1): 27-31, 1990 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-2178892

RESUMO

From 1970 to 1987 among 964 patients with aortic aneurysms 52 (5.4%) underwent aortic graft replacement for inflammatory aortic aneurysm. 79.2% were symptomatic, 18.9% ruptured at the time of admission. CT-scan is of main diagnostic value. The perioperative mortality rate was 15.1%. At follow-up (28 months mean) 35 of 38 living patients (92.7%) were examined clinically, by sonography and in most cases by CT-scan. The late complication rate was 20% (n = 7, atrophic kidney 3, anastomotic aneurysms 4). In contrast to abdominal aortic aneurysms inflammatory aneurysms present an elevated morbidity and mortality rate which has to be reduced by exact preoperative diagnosis and modified surgical technique.


Assuntos
Aneurisma Aórtico/cirurgia , Ruptura Aórtica/cirurgia , Aortite/cirurgia , Prótese Vascular , Complicações Pós-Operatórias/patologia , Idoso , Aorta Abdominal/patologia , Aorta Abdominal/cirurgia , Aorta Torácica/patologia , Aorta Torácica/cirurgia , Aneurisma Aórtico/patologia , Ruptura Aórtica/patologia , Aortite/patologia , Feminino , Seguimentos , Oclusão de Enxerto Vascular/patologia , Humanos , Masculino , Tomografia Computadorizada por Raios X , Ultrassonografia
20.
J Cardiovasc Surg (Torino) ; 53(4): 419-26, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22854521

RESUMO

AIM: The aim of this paper was to evaluate short-term outcome of the use of endoanchors to secure the primary migrated endograft and additional extender cuffs to the aortic wall in patients with previous failed endovascular aortic aneurysm repair. METHODS: Consecutive patients who needed proximal repair of a primary failed endograft due to migration (with or without type IA endoleaks) were treated with endoanchors, with or without additional extender cuffs. Data of this group were prospectively gathered in vascular referral centers that were early adopters of the endoanchor technique. Preprocedural and periprocedural data were prospectively gathered and retrospectively analyzed. Follow-up after endoanchor placement consisted of regular hospital visits, with computed tomography or duplex scanning at 1, 6, and 12 months. RESULTS: From July 2010 to May 2011, 11 patients (8 men), mean age 77 years (range, 59-88 years), were treated with endoanchors for a failed primary endograft (2 Excluder endografts, 1 AneuRx endograft, and 8 Talent endografts) due to distal migration of the main body, with or without type IA endoleak. Revision consisted of using endoanchors to secure the body of the primary endograft to the aortic wall to avoid persistent migration. Most patients had additional proximal extender cuffs with suprarenal fixation, which were secured with endoanchors to the aortic wall and in some patients also to the primary endograft. A median of 6 endoanchors were implanted. All endoanchors were positioned correctly but one. One endoanchor dislodged but was successfully retrieved using an endovascular snare. During a mean follow-up of 10 months (range, 3-18 months) no endoanchor-related complications or renewed migration of the endografts occurred. Two patients underwent repeat intervention due to persistent type IA endoleak during follow-up. CONCLUSION: The use of endoanchors to secure migrated endografts to the aortic wall is safe and feasible and might help to overcome persistent migration of primary failed endografts. In combination with the use of sole extender cuffs the majority of proximal EVAR failures can be solved.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Implante de Prótese Vascular/instrumentação , Prótese Vascular , Endoleak/cirurgia , Procedimentos Endovasculares/instrumentação , Migração de Corpo Estranho/cirurgia , Stents , Idoso , Idoso de 80 Anos ou mais , Aortografia/métodos , Implante de Prótese Vascular/efeitos adversos , Endoleak/diagnóstico , Endoleak/etiologia , Procedimentos Endovasculares/efeitos adversos , Europa (Continente) , Feminino , Migração de Corpo Estranho/diagnóstico , Migração de Corpo Estranho/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Reoperação , Estudos Retrospectivos , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Ultrassonografia Doppler Dupla
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