Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 28
Filtrar
1.
Neurol Perspect ; 1(1): 33-38, 2021.
Artigo em Espanhol | MEDLINE | ID: mdl-38620899

RESUMO

Objetivo: Presentar nuestra experiencia y analizar el pronóstico de pacientes COVID-19 con ictus isquémico agudo por oclusión de grandes vasos tratados con neurointervencionismo (NIV) en la unidad de ictus. Material y métodos: Se incluyeron todos los pacientes consecutivos con ictus isquémico agudo debido a oclusión de grandes vasos tratados por NIV en nuestra institución entre marzo y abril de 2020, durante el brote de COVID-19. Se realizó una comparación entre pacientes con COVID-19 y pacientes sin infección por coronavirus. Se comunican los resultados clínicos iniciales y a corto plazo. Resultados: Del 1 de marzo al 30 de abril se realizaron 25 procedimientos de NIV por ictus isquémico agudo en nuestra institución. Ocho pacientes eran COVID-19 y 17 eran pacientes no COVID-19. La edad media de los pacientes con COVID-19 fue de 70,1 ± 12,23 años, y 7 fueron hombres (87,5%, p = 0,006). Mientras que todos los pacientes sin COVID procedían de urgencias, solo 5 pacientes con COVID-19 (62,5%) fueron atendidos desde urgencias por ictus (p = 0,01). Tres pacientes procedían de hospitalización. La tasa de mortalidad en pacientes sin COVID-19 fue del 5,8%, pero en pacientes con COVID-19 fue considerablemente alta (50%). Ningún parámetro analítico difirió entre ambos grupos. No se registraron hemorragias en esta serie.En comparación con el mismo período del año pasado, se observó una disminución de la actividad neurointervencionista del 39%. Conclusiones: La mejor terapia médica y de NIV desembocó en malos resultados y una mortalidad dramática. La pandemia de COVID-19 dificultó significativamente el funcionamiento normal de los servicios de urgencias y la atención de estos pacientes con ictus.

2.
Eur J Vasc Endovasc Surg ; 51(1): 90-9, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26602223

RESUMO

OBJECTIVES: It is difficult to establish which patients suffering from critical lower limb ischaemia will benefit from revascularization. Risk scores can provide objectivity in decision making. The aim was to design a new risk score (ERICVA) and compare its predictive power with the PREVENT III and Finnvasc scores. METHODS: An observational retrospective study of patients who underwent revascularization (open or endovascular) in Valladolid's University Hospital between 2005 and 2010 was designed. The sample was divided into two subgroups (development and validation subsamples). After univariate analysis followed by a multivariate Cox regression, a number of variables associated with death and/or major amputation were selected, creating a weighed score called ERICVA, and a simplified version of it. The area under the curve (AUC) of receiver operating characteristic (ROC) curve analysis was performed and the AUC of these two scores were additionally compared with the AUC of the PREVENT III and Finnvasc scales. RESULTS: Six hundred and seventy two cases with an average surveillance of 778 days were included in the study. Amputation free survival (AFS) was 84.8% at 30 days and 63.1% at 1 year. Variables associated with death and/or major amputation in the Cox regression were cerebrovascular disease, prior contralateral major amputation, diabetes mellitus, dialysis, chronic obstructive pulmonary disease, cancer, haematocrit less than 30%, neutrophil/lymphocyte ratio exceeding 5, absence of arterial Doppler signal at the ankle, emergency admission, and Rutherford stage 6; these variables were used for the ERICVA and simplified ERICVA score designs. Scores were applied to both subsamples; in the development sample the AUC of ERICVA and simplified ERICVA was significantly higher than the PREVENT III (p = .008 and p = .045) and Finnvasc (p < .0001 and p = .0013) scores; in the validation sample the AUC of ERICVA and simplified ERICVA were significantly higher than Finnvasc score (p = .0323 and p = .0017). CONCLUSIONS: The ERICVA model has a good predictive capacity for death and/or major amputation in the clinical setting, and is better than the PREVENT III and Finnvasc scores.


Assuntos
Estado Terminal , Técnicas de Apoio para a Decisão , Procedimentos Endovasculares , Isquemia/terapia , Extremidade Inferior/irrigação sanguínea , Procedimentos Cirúrgicos Vasculares , Idoso , Idoso de 80 Anos ou mais , Amputação Cirúrgica , Área Sob a Curva , Comorbidade , Intervalo Livre de Doença , Procedimentos Endovasculares/efeitos adversos , Procedimentos Endovasculares/mortalidade , Feminino , Hospitais Universitários , Humanos , Isquemia/diagnóstico , Isquemia/mortalidade , Isquemia/fisiopatologia , Estimativa de Kaplan-Meier , Salvamento de Membro , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Seleção de Pacientes , Valor Preditivo dos Testes , Modelos de Riscos Proporcionais , Curva ROC , Reprodutibilidade dos Testes , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Espanha , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares/efeitos adversos , Procedimentos Cirúrgicos Vasculares/mortalidade
3.
Eur J Vasc Endovasc Surg ; 47(6): 640-6, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24725966

RESUMO

OBJECTIVE: Calcifying nanoparticles (NPs) have been detected recently in calcified human arterial specimens and are involved in the process of calcification. This study was designed to test the hypothesis that human-derived NPs could worsen the response to arterial endothelial injury and induce vascular calcification. METHODS: The right carotid artery of 24 New Zealand rabbits was injured with an angioplasty balloon. Animals were perfused intravenously with saline (100 mL) during the experiment and divided into three groups: group-A, control; group-B, exposed to NPs (2 mL) obtained from calcified aortic valves; and group-C, exposed to NPs (2 mL) and treated postoperatively with atorvastatin (2.5 mg/kg/24 h). At 30 days, both carotid arteries were removed and examined histologically. Blood measurements were monitored during the study. RESULTS: The intimal hyperplasia area was significantly larger in the injured right carotid artery compared with the left unoperated carotid artery in all groups. There was no significant variation in medial area between groups. Morphometrically, the intima/media ratio (IMR) was significantly higher in damaged carotids compared with controls. A significant increase of IMR was found in group-B (1.81 ± 0.41) compared with group-A (0.38 ± 0.59; p = .004) or group-C (0.89 ± 0.79; p = .035). Differences between groups C and A were not significant (p = .064). Calcifications were observed in six animals, all of which had been exposed to NPs (4 in group-B, 2 in group-C, p = .027). Plasma levels of cholesterol and triglycerides remained stable. CONCLUSIONS: This research confirms the ability of systemic inoculation of human-derived NPs to accelerate hyperplasia and stimulate calcification in localized areas of arteries previously submitted to endothelial damage, while it was harmless in healthy arteries. Atorvastatin was demonstrated to slow down this process.


Assuntos
Nanopartículas Calcificantes/metabolismo , Lesões das Artérias Carótidas/metabolismo , Músculo Liso Vascular/metabolismo , Calcificação Vascular/metabolismo , Angioplastia com Balão , Animais , Atorvastatina , Nanopartículas Calcificantes/administração & dosagem , Artérias Carótidas/metabolismo , Artérias Carótidas/patologia , Lesões das Artérias Carótidas/sangue , Lesões das Artérias Carótidas/etiologia , Lesões das Artérias Carótidas/patologia , Espessura Intima-Media Carotídea , Colesterol/sangue , Modelos Animais de Doenças , Ácidos Heptanoicos/farmacologia , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/farmacologia , Hiperplasia , Masculino , Músculo Liso Vascular/efeitos dos fármacos , Músculo Liso Vascular/lesões , Músculo Liso Vascular/patologia , Neointima , Pirróis/farmacologia , Coelhos , Fatores de Tempo , Triglicerídeos/sangue , Calcificação Vascular/sangue , Calcificação Vascular/etiologia , Calcificação Vascular/patologia
4.
Eur J Vasc Endovasc Surg ; 43(1): 35-7, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22032969

RESUMO

INTRODUCTION: Synchronous embolism to the superior mesenteric artery (SMA) and coeliac axis (CA) is a rare disease. REPORT: A 67-year-old man with atrial fibrillation developed acute liver failure due to an embolic occlusion of the CA and SMA, with a severe coagulation disorder. He was successfully managed with percutaneous stent placement and an exploratory laparotomy was not needed. He remains symptom-free 1 year after the procedure, and duplex follow-up showed stent patency. CONCLUSION: Endovascular techniques in patients with liver failure, no signs of peritonism, early diagnosis and high operative risk seem feasible and should be used if possible, as first-line option.


Assuntos
Angioplastia com Balão , Arteriopatias Oclusivas/terapia , Fibrilação Atrial/complicações , Artéria Celíaca , Embolia/terapia , Isquemia/terapia , Falência Hepática Aguda/terapia , Oclusão Vascular Mesentérica/terapia , Doenças Vasculares/terapia , Idoso , Angiografia Digital , Angioplastia com Balão/instrumentação , Arteriopatias Oclusivas/diagnóstico por imagem , Arteriopatias Oclusivas/etiologia , Artéria Celíaca/diagnóstico por imagem , Constrição Patológica , Embolia/diagnóstico por imagem , Embolia/etiologia , Humanos , Isquemia/diagnóstico por imagem , Isquemia/etiologia , Falência Hepática Aguda/diagnóstico por imagem , Falência Hepática Aguda/etiologia , Masculino , Isquemia Mesentérica , Oclusão Vascular Mesentérica/diagnóstico por imagem , Oclusão Vascular Mesentérica/etiologia , Stents , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Doenças Vasculares/diagnóstico por imagem , Doenças Vasculares/etiologia
5.
J Cardiovasc Surg (Torino) ; 52(6): 761-8, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22051985

RESUMO

AIM: The aim of this paper was to determine the prevalence of extracraneal carotid artery disease in patients with intermittent claudication, to describe classic cardiovascular risk factors in those with hemodynamically significant stenosis and to try to define subgroups at high risk, improving therefore the performance of non invasive testing. METHODS: A prospective descriptive study was conducted, with 146 patients reporting an intermittent claudication of the lower limbs and without a previous cerebrovascular event or carotid surgery. An ultrasonography examination was done. Risk factors were registed (smoking, dislipemia, arterial hypertension, diabetes mellitus), also ischemic cardiopathy and myocardial revascularization procedures. Univariate and multivariate analysis was made to define the variables associated with hemodynamically significant stenosis. RESULTS: Prevalence of hemodynamically significant stenosis was 23.2%. Smoking, dislipemia, arterial hypertension and diabetes mellitus were not significantly associated with carotid stenosis; 24.2% of patients affected of ischemic cardiopathy present a severe stenosis, and myocardial revascularization was a risk factor for carotid stenosis. CONCLUSION: Patients with claudication and ischemic miocardiopathy, especially when myocardial revascularization is needed, must be explored with carotid ultrasonography. In this patients, probably of hemodynamically significant carotid stenosis that requires treatment is more frequent.


Assuntos
Doenças Cardiovasculares/epidemiologia , Estenose das Carótidas/epidemiologia , Claudicação Intermitente/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Doenças Assintomáticas , Estenose das Carótidas/diagnóstico por imagem , Estenose das Carótidas/fisiopatologia , Distribuição de Qui-Quadrado , Feminino , Hemodinâmica , Humanos , Claudicação Intermitente/diagnóstico , Claudicação Intermitente/fisiopatologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Valor Preditivo dos Testes , Prevalência , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença , Espanha/epidemiologia , Ultrassonografia
6.
Eur J Vasc Endovasc Surg ; 38(5): 635-41, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19729323

RESUMO

OBJECTIVES: Leucocyte infiltration in the wall of varicose veins has been reported previously. This study was designed to investigate the expression of pro-inflammatory cytokines and chemokines in control and in patients with varicose veins and to test the effect of treating varicose vein patients with acetylsalicylic acid (ASA) on cytokine expression prior to removal of varices. MATERIAL AND METHODS: Sections of vein were removed during operation from both patient groups, and ribonuclease protection assays (RPAs) were performed to assess the expression of chemokines. Group I included non-varicose saphenous veins from healthy patients undergoing amputation for trauma. Varicose veins were obtained from patients with primary varicose undergoing surgical treatment who received no drug (group II) or treatment with 300 mg day(-1) of ASA for 15 days before surgery (group III). RESULTS: Non-varicose veins constitutively expressed low levels of monocyte-chemoattractant protein (MCP-1) and interleukin (IL)-8 mRNA. Varicose veins had a distinct chemokine expression pattern, since significant up-regulation of MCP-1 and IL-8 and a marked expression of IP-10, RANTES, MIP-1alpha and MIP-1beta mRNA were detected. Removal of the endothelium did not alter this pattern. Varicose veins obtained from patients treated with ASA showed a consistent decrease in chemokine expression, although it did not reach statistical significance. CONCLUSIONS: Varicose veins showed increased expression of several chemokines compared to control veins. A non-significant reduction of activation was observed following treatment with ASA for 15 days.


Assuntos
Anti-Inflamatórios/administração & dosagem , Aspirina/administração & dosagem , Quimiocinas/metabolismo , Citocinas/metabolismo , Mediadores da Inflamação/metabolismo , Inibidores da Agregação Plaquetária/administração & dosagem , Veia Safena/efeitos dos fármacos , Varizes/tratamento farmacológico , Adulto , Quimiocinas/genética , Terapia Combinada , Citocinas/genética , Método Duplo-Cego , Esquema de Medicação , Endotélio Vascular/efeitos dos fármacos , Endotélio Vascular/imunologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , RNA Mensageiro/metabolismo , Veia Safena/imunologia , Veia Safena/cirurgia , Resultado do Tratamento , Regulação para Cima , Varizes/imunologia , Varizes/cirurgia , Procedimentos Cirúrgicos Vasculares
7.
Eur J Vasc Endovasc Surg ; 37(5): 538-43, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19231249

RESUMO

OBJECTIVE: To compare the outcome of the postoperative administration of a restricted or standard intravenous fluid regimen in patients who underwent elective abdominal vascular surgery. The primary end point was postoperative hospital stay. DESIGN: Prospective observer-blinded, randomised controlled trial. MATERIAL AND METHODS: Patients were considered eligible if they underwent transperitoneal aorto-iliac approach with infrarenal graft repair. During the operation and intensive care unit stay, fluids were prescribed by the anaesthetists who were unaware of the details of the study. In the vascular surgical ward, patients in the standard group (SG) received 2500ml of fluids per day, whereas patients in the restricted group (RG) received 1500ml of fluids per day. All the patients were evaluated on an intention-to-treat basis. RESULTS: Forty patients were randomised to the RG (n=20) or SG (n=20). No significant differences were observed in the recovery of gastrointestinal function. However, the postoperative hospital stay was shorter in the RG (8 days) than in the SG (12 days) (p=0.003). CONCLUSIONS: The use of a restrictive postoperative fluid protocol significantly reduces the duration of hospital stay in patients who have undergone major elective abdominal vascular surgery.


Assuntos
Hidratação/métodos , Motilidade Gastrointestinal/fisiologia , Trato Gastrointestinal/fisiopatologia , Oclusão de Enxerto Vascular/cirurgia , Complicações Pós-Operatórias/terapia , Recuperação de Função Fisiológica , Procedimentos Cirúrgicos Vasculares/métodos , Idoso , Procedimentos Cirúrgicos Eletivos/métodos , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Pós-Operatórios/métodos , Estudos Prospectivos , Artéria Renal/cirurgia , Obstrução da Artéria Renal/cirurgia , Método Simples-Cego , Resultado do Tratamento
8.
Actas Urol Esp ; 27(8): 640-4, 2003 Sep.
Artigo em Espanhol | MEDLINE | ID: mdl-14587241

RESUMO

Liposarcoma is a malignant tumor that has an embryologic origin from mesodermal tissue depending on fatty tissue. Although liposarcoma is only 0.1% of all human neoplasms, it is the most common histology subtype of retroperitoneal soft tissue sarcomas. This tumor grows slowly. Diffuse abdominal pain is its most frequent symptom and abdominal mass is the most common sign. Aggressive surgical treatment is basic to get a complete resection and a local disease control. This objective is difficult because of the large tumor size it gets in the retroperitoneal location and the multiorgan involvement that require the resection of a high percentage of contiguous organs. We report a case of a giant retroperitoneal liposarcoma presenting like continuous left hemiabdominal pain because of the visceral compression. The right kidney was involved and suffering from renal vessel enlargement without renal function. There is a high probability of microscopic residual disease and a good follow-up of the patients is necessary as well as an adjuvant radiation therapy in some cases.


Assuntos
Lipossarcoma/patologia , Neoplasias Retroperitoneais/patologia , Dor Abdominal/etiologia , Calcinose/diagnóstico , Calcinose/patologia , Feminino , Humanos , Infarto/etiologia , Rim/irrigação sanguínea , Lipossarcoma/diagnóstico , Lipossarcoma/cirurgia , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Exame Físico , Neoplasias Retroperitoneais/diagnóstico , Neoplasias Retroperitoneais/cirurgia , Tomografia Computadorizada por Raios X
9.
Rev Clin Esp ; 203(2): 68-73, 2003 Feb.
Artigo em Espanhol | MEDLINE | ID: mdl-12605778

RESUMO

BACKGROUND: Venous thromboembolic disease (VTD) is a common and severe condition. Its anticoagulation-based treatment is not without complications and failures. OBJECTIVE: To create in Internet a broad database of patients with venous thromboembolic disease attended at spanish hospitals which might be helpful in the clinical practice. METHODS: Computerized registry of all incident cases of patients with objective diagnosis of VTD attended at 27 spanish hospitals since March, 1st, 2001. All data related to diagnosis, treatment and follow-up during at least a 3-month period were collected. RESULTS: Since March 1st to August 31st, 2001, 573 patients were included (399 with VTD, 108 with PE and 66 with VTD and PE). The mean age of patients was 65.8 years. 10.5 % of patients had at least one risk factor: 5.2% hypoprothrombinemia (< 50%), 3% history of recent hemorrhage, 1.8% creatinine higher than 3 mg/dl, 1.3% hemodynamic unstability, 1.1% pregnancy, and 1% thrombopenia lower than 60000 platelets/mm3. The three-month follow-up period was completed by 35.4% of patients, 21.8 % of them with events (death [4.7%], hemorrhage [12.5%], and VTD relapse [4.2%]). Hypoprothrombinemia was significantly associated with increased risk of complications and history of recent hemorrhage with relapse. CONCLUSIONS: It is feasible to create a database containing information on a relevant number of VTD patients, 10.5% of them with complications. Such information will allow its utilization at short-term for the decision-marking process, particularly for patients with complications.


Assuntos
Sistemas Computadorizados de Registros Médicos , Sistema de Registros , Tromboembolia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Espanha
11.
Ann Vasc Surg ; 14(5): 436-43, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-10990551

RESUMO

Multiple reports over the last decade have documented the clear superiority of surgery over other alternative treatments in the management of renal cell carcinoma with extension into the inferior vena cava (IVC). Controversy persists, however, regarding the management of tumor thrombus that extends retrohepatically, but not entering the right atrium. In this report, we retrospectively review our experience with the use of a feasible transabdominal technique without any form of bypass or anticoagulation for safe removal of renal tumor involving the retrohepatic IVC. From 1988 to 1998, 132 patients with renal cell carcinoma underwent radical nephrectomies at the urology service of our hospital. Five patients (3.8%) had retrohepatic venous extension through the renal vein into the IVC. Our transabdominal approach was accomplished by complete mobilization of the liver, control of the hepatocaval connection, total vascular exclusion of the IVC without heparin administration, removal of the tumor thrombus, and primary closure of the longitudinal vena cavotomy. From our results, we found the transabdominal approach with total vascular exclusion of the IVC to be satisfactory, with no early deaths, acceptable morbidity, and a remarkable limitation of blood loss and transfusion requirements.


Assuntos
Carcinoma de Células Renais/cirurgia , Neoplasias Renais/cirurgia , Células Neoplásicas Circulantes , Neoplasias Vasculares/cirurgia , Veia Cava Inferior/cirurgia , Adulto , Idoso , Carcinoma de Células Renais/patologia , Feminino , Humanos , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Nefrectomia , Estudos Retrospectivos , Neoplasias Vasculares/patologia , Procedimentos Cirúrgicos Vasculares/métodos , Veia Cava Inferior/patologia
12.
Rev Esp Anestesiol Reanim ; 47(7): 287-92, 2000.
Artigo em Espanhol | MEDLINE | ID: mdl-11002712

RESUMO

OBJECTIVES: To describe and compare the core-cutaneous thermal and photoplethysmographic time-course effects after induction of general anesthesia with propofol, fentanyl and vecuronium. PATIENTS AND METHODS: We measured digital blood flow, core temperature and skin temperature in the upper limb (fingertip, forearm and upper arm) in 20 patients (10 men and 10 women, ASA-I) before anesthetic induction and 5, 10, 15 and 20 min after induction. Skin temperature changes were recorded with disposable thermocouples. Blood flow was recorded by digital photoplethysmography (PhPl) in the thumb. Anesthesia was provided without premedication, using propofol (3 mg.kg-1), fentanyl (0.1 mg) and vecuronium (0.1 mg.kg-1). After endotracheal intubation, anesthesia was maintained with oxygen-nitrous oxide and 0.1 mg of intravenous fentanyl at the tenth minute, without inhaled anesthetics. RESULTS: All patients showed intense, abrupt vasodilatation in the thumb with marked increases in PhPl (PhPl = 10.4 +/- 5.0 mV/V, at 5 min, p < 0.001) and fingertip temperature (TFingertip = 6.2 +/- 2.0 C, at 10 min, p < 0.001). However, skin temperature changes in the upper arm and forearm were moderate and slower (TForearm = 2.1 +/- 1.4 C, p < 0.01 and TUpper arm = 1.1 +/- 1.2 C, p < 0.01; at 20 min in both cases). A significant correlation was found only between PhPl and TFingertip (r = 0.55, p < 0.001). CONCLUSIONS: Anesthetic induction with propofol, fentanyl and vecuronium produces cutaneous vasodilatation in the upper limb unequally: the greatest increase in skin temperature occurs at the fingertip, while forearm and upper arm temperatures increase less. We think that skin vasodilatation in peripheral distal areas may play an important role in redistributing core heat during anesthesia.


Assuntos
Anestesia Intravenosa , Braço/fisiologia , Temperatura Corporal , Fentanila , Propofol , Brometo de Vecurônio , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
13.
J Vasc Surg ; 30(2): 283-92, 1999 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-10436448

RESUMO

PURPOSE: The primary objective of this study was to evaluate with venography the rate of thrombus regression after a fixed dose of low-molecular weight heparin (LMWH) per day for 3 months compared with oral anticoagulant therapy for deep venous thrombosis (DVT). Secondary endpoints were the comparisons of the efficacy and safety of both treatments. METHODS: This study was designed as an open randomized clinical study in a university hospital setting. Of the 165 patients finally enrolled in the study, 85 were assigned LMWH therapy and 80 were assigned oral anticoagulant therapy. In the group randomized to oral anticoagulant therapy, the patients first underwent treatment in the hospital with standard unfractionated heparin and then coumarin for 3 months. Doses were adjusted with laboratory monitoring to maintain the international normalized ratio between 2.0 and 3.0. Patients in the LMWH group were administered subcutaneous injections of fixed doses of 40 mg enoxaparin (4000 anti-Xa units) every 12 hours for 7 days, and after discharge from the hospital, they were administered 40 mg enoxaparin once daily at fixed doses for 3 months without a laboratory control assay. A quantitative venographic score (Marder score) was used to assess the extent of the venous thrombosis, with 0 points indicating no DVT and 40 points indicating total occlusion of all deep veins. The rate of thrombus reduction was defined as the difference in quantitative venographic scores after termination of LMWH or coumarin therapy as compared with the scores obtained on the initial venographic results. The efficacy was defined as the ability to prevent symptomatic extension or recurrence of venous thromboembolism (documented with venograms or serial lung scans). The safety was defined as the occurrence of hemorrhages. RESULTS: After 3 months of treatment, the mean Marder score was significantly decreased in both groups in comparison with the baseline score, although the effect of therapy was significantly better after LMWH therapy (49.4% reduction) than after coumarin therapy (24.5% reduction; P <.001). LMWH therapy and male gender were independently associated with an enhanced resolution of the thrombus. A lower frequency of symptomatic recurrent venous thromboembolism was also shown in patients who underwent treatment with LMWH therapy (9.5%) than with oral anticoagulant therapy (23.7%; P <.05), although this difference was entirely a result of recurrence of DVT. Bleeding complications were significantly fewer in the LMWH group than in the coumarin group (1. 1% vs 10%; P <.05). This difference was caused by minor hemorrhages. Coumarin therapy and cancer were independently associated with an enhanced risk of complications. Subcutaneous heparin therapy was well tolerated by all patients. CONCLUSION: The patients who were allocated to undergo enoxaparin therapy had a significantly greater improvement in their quantitative venographic score, a significantly lower recurrence rate of symptomatic venous thromboembolism, and a significantly lower incidence of bleeding than patients who underwent treatment with coumarin. LMWH can be used on an outpatient basis as a safer and more effective alternative to classical oral anticoagulant therapy for the secondary prophylaxis of selected patients with DVT.


Assuntos
Anticoagulantes/uso terapêutico , Cumarínicos/uso terapêutico , Enoxaparina/uso terapêutico , Heparina de Baixo Peso Molecular/uso terapêutico , Flebografia , Tromboflebite/diagnóstico por imagem , Tromboflebite/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/efeitos adversos , Cumarínicos/efeitos adversos , Enoxaparina/efeitos adversos , Feminino , Seguimentos , Heparina de Baixo Peso Molecular/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Tempo
14.
Minerva Chir ; 54(3): 171-4, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10352528

RESUMO

Tumoral disease of the arteries is uncommon. It is possible that, in tumoral reoperations affecting cervical structures, periarterial fibrosis due to radiotherapy and previous surgery and metastatic adherences to the arterial wall makes radical surgery difficult. We present a case where the surgical treatment of a regional relapse from laryngeal neoplasm needed the removal of the common carotid artery and its reconstruction with autologous patent superficial femoral artery. Surgical technique included a PTFE graft interposition in the leg.


Assuntos
Artéria Carótida Primitiva/cirurgia , Artéria Femoral/transplante , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/cirurgia , Artéria Carótida Primitiva/patologia , Glote , Humanos , Neoplasias Laríngeas/patologia , Neoplasias Laríngeas/cirurgia , Laringectomia , Masculino , Pessoa de Meia-Idade , Esvaziamento Cervical , Invasividade Neoplásica , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Reoperação , Glândula Submandibular/patologia , Glândula Submandibular/cirurgia
15.
J Cardiovasc Surg (Torino) ; 40(1): 7-13, 1999 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-10221378

RESUMO

BACKGROUND: Lumbar sympathectomy (LS) is often the only alternative treatment that can be considered as a means of improving the distal circulation to such extent that major amputation is prevented. To make a retrospective study in order to know the current value of LS as isolated technique for the treatment of severe ischemia of lower limbs in the absence of the possibility for vascular reconstruction. METHODS: Between 1987 and 1992, 100 LS were performed in 93 patients (82 males and 11 females) aged 64.5+/-11.1 yrs. 63% were older than 70 years. Indication was invalidant claudication/rest pain (grade II, 57%) or trophic lesion (grade III, 43%) in patients where previous reconstructive surgery failed (18%), was not possible to do (23%) or refused revascularization (20%), or with poor surgical risk (39%). Preoperative evaluation included Doppler measures, ankle/brachial index (ABI) and arteriography in every case. Surgical sympathectomy was performed in all patients. Success was considered if rest pain was absent or trophic lesions have healed at six months, comparing results in patients diabetics and non-diabetics with ABI higher or lower 0.3. RESULTS: Postoperative stage was 6.4+/-2.3 days. Morbidity was 4% and mortality was 7% in the 30-day postoperative period, related with patients older than 70 years. Long-term mortality was 9%, for a global nortality of 16%. 12 patients needed inflow surgery after LS. There was success in 58.5% of grade II and 61.7% of grade III patients at six months, with significative difference (p=0.049) if ABI was >0.3. In diabetics with ABI >0.3, trophic lesions have worse prognostic than ABI <0.3. Pre- and postoperative ABI were correlated (R2=0.65), and the increasing of 0.1 in preoperative ABI had a positive prognostic value over lesion healing. Patency of superficial femoral artery (SFA) has correlated significantly (p=0.000021) with successful outcome after LS. CONCLUSIONS: LS could be a technique that moderately improves the ischemic limb in patients who refuse major surgery or where arterial reconstruction is not indicated. Preoperative ABI has prognostic value in postoperative outcome, with clinical improvement if it is >0.3. Diabetes has not been a negative predictive factor in our series. Patency of superficial femoral artery is related to successful outcome of the patients.


Assuntos
Isquemia/cirurgia , Perna (Membro)/irrigação sanguínea , Plexo Lombossacral/cirurgia , Simpatectomia , Adulto , Idoso , Idoso de 80 Anos ou mais , Doença Crônica , Feminino , Artéria Femoral/cirurgia , Humanos , Isquemia/fisiopatologia , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Prognóstico , Estudos Retrospectivos , Resultado do Tratamento , Grau de Desobstrução Vascular
16.
Eur J Vasc Endovasc Surg ; 16(4): 320-8, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9818009

RESUMO

OBJECTIVES: Somatosensory evoked potentials (SEPs), spinal evoked potentials (Spinal-EPs), and motor-evoked potentials (MEPs) were monitored in a rabbit model of spinal cord ischaemia to evaluate their accuracy and relationship to clinical status. METHODS: A modified rabbit spinal cord ischaemia model of infrarenal aortic occlusion for 21 min was employed (30 rabbits). After baseline SEPs, Spinal-EPs, and MEPs were obtained, evoked potentials were recorded continuously during and after clamping of the aorta (30 min). Neurological outcome at 24 h was correlated with evoked potentials, and histopathological findings. RESULTS: Fifteen animals became paraplegic. MEPs were always abolished after clamping of the aorta while Spinal-EPs and SEPs remained. The sensory evoked potentials (SEPs and Spinal-EPs) were the least sensitive to spinal cord ischaemia, and their presence had no correlation with the final clinical status (50% of false negatives). This was consistent with histopathological examination that showed damage almost entirely confined to the anterior horn, while the dorsal columns were generally well preserved. High spine MEPs evoked by twitch stimulation was the best predictor of clinical outcome (0% of false negatives, 0% of false positives). CONCLUSIONS: SEPs and Spinal-EPs cannot be used as safe monitors of ischaemia of the spinal cord. High spine MEPs evoked by twitch stimulation was the most useful for real-time evaluation of spinal cord ischaemia, and the best predictor of neurologic outcome during reperfusion.


Assuntos
Potencial Evocado Motor/fisiologia , Potenciais Somatossensoriais Evocados/fisiologia , Isquemia/fisiopatologia , Monitorização Intraoperatória/métodos , Medula Espinal/irrigação sanguínea , Animais , Aorta Abdominal , Constrição , Feminino , Masculino , Paraplegia/etiologia , Paraplegia/prevenção & controle , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Coelhos , Medula Espinal/fisiopatologia , Fatores de Tempo
18.
Ann Vasc Surg ; 10(1): 16-21, 1996 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8688291

RESUMO

The purpose of this study was to evaluate the renoprotective effect of a specific platelet-activating factor antagonist (WEB-2086) in an experimental model of normothermic renal ischemia. Twenty New Zealand white rabbits were studied for 2 days before and 24 hours after a 60-minute period of renal ischemia induced by bilateral clamping of the renal arteries. The animals were divided into two groups: a control group (group A; n = 10) and a treated group (group B; n = 10). In group A the urinary flow rate decreased significantly (from 0.098 +/- 0.008 ml/min to 0.029 +/- 0.005 ml/min) (p < 0.001) and there was a significant reduction in creatinine clearance (from 11.4 +/- 1.2 ml/min to 3.4 +/- 1.1 ml/min) (p < 0.001). In group B no significant changes were observed, although the urinary flow rate increased even in the postischemic period (from 0.09 +/- 0.008 ml/min to 0.11 +/- 0.02 ml/min). Microcirculatory cortical flow showed a postischemic reduction in both groups, although it was most significant in the control group (group A = 43.7%, group B = 71.5%; p < 0.001). Histologic study showed mild damage with patchy tubular necrosis in both groups, although this injury was less severe in the treated group. The results suggest that the preoperative administration of WEB-2086 produces a potent diuretic effect with significant attenuation of postischemic acute renal failure.


Assuntos
Azepinas/farmacologia , Isquemia/fisiopatologia , Rim/irrigação sanguínea , Rim/efeitos dos fármacos , Fator de Ativação de Plaquetas/antagonistas & inibidores , Inibidores da Agregação Plaquetária/farmacologia , Triazóis/farmacologia , Injúria Renal Aguda/etiologia , Injúria Renal Aguda/fisiopatologia , Injúria Renal Aguda/prevenção & controle , Animais , Azepinas/uso terapêutico , Modelos Animais de Doenças , Diurese/efeitos dos fármacos , Feminino , Isquemia/complicações , Rim/patologia , Testes de Função Renal , Masculino , Necrose , Inibidores da Agregação Plaquetária/uso terapêutico , Coelhos , Triazóis/uso terapêutico
19.
J Cardiovasc Surg (Torino) ; 36(6): 581-5, 1995 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-8632030

RESUMO

INTRODUCTION: Vascular graft infection is a rare (0.8-2.6%) but serious complication of reconstructive vascular surgery, that comprises limb-threatening when located in the groin. PURPOSE: Review our experience in the treatment of infected groin wounds after femoral surgery by using sartorius myoplasty. MATERIALS AND METHODS: Between January 1989 and October 1993, 13 patients with infected groin wounds involving vascular graft (Grade III of Szilagyi) were treated with local gently debridement, 10% povidone iodide lavage for 5 days, local and systemic antibodies for 14 days and in situ change of the infected graft followed by sartorius myoplasty, detaching its origin from superior anterior iliac spine and fixing it to inguinal ligament, except in one case where tissue cultures were negative and the graft was not changed. Follow-up was done using clinical and echographical criteria at 3, 6, 12 months after operation, and annually. RESULTS: Hospital mean stage was 10 days (8-13). The mean follow-up was 36 months (12-65). There was only one immediate complication from hemorrhage that needed surgery. The patient whose graft was not changed developed an abscess in the prosthetic bed 12 weeks after treatment. It was necessary to change it after debridement and antibiotics. No mortality was related to this technique. CONCLUSIONS: Sartorius myoplasty, with detaching and origin transposition, after in situ change of infected graft, is an excellent therapeutic option for reconstruction and treatment for infected groins with vascular grafts because it is easy to perform and offers very good results in long-term follow-up.


Assuntos
Prótese Vascular , Artéria Femoral , Músculo Esquelético/transplante , Retalhos Cirúrgicos , Infecção da Ferida Cirúrgica/cirurgia , Idoso , Idoso de 80 Anos ou mais , Virilha , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA