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1.
Arq. bras. oftalmol ; 84(3): 235-240, May-June 2021. tab
Article in English | LILACS | ID: biblio-1248975

ABSTRACT

ABSTRACT Purposes: To evaluate the optical coherence tomography angiography findings in patients with Behçet disease with and without ocular involvement. Methods: A total of 40 patients with Behçet disease and 30 healthy controls were enrolled in the study. Retinal vessel density in the superficial capillary plexus and deep capillary plexus, foveal avascular zone area and perimeter, acirculatory index, foveal density, and nonflow area in the superficial retina were automatically measured using the optical coherence tomography angiography software AngioVue and compared between the groups. Results: The mean parafoveal and perifoveal vessel densities in the superficial capillary plexus and deep capillary plexus and foveal density were significantly lower in the eyes with Behçet uveitis compared to the eyes without Behçet uveitis and eyes of the healthy controls. In the eyes with Behçet uveitis, logMAR visual acuity showed a moderate correlation with parafoveal and perifoveal vessel densities and foveal density (r=-0.43, p=0.006; r=-0.62, p<0.001; r=-0.42, p=0.008; respectively). Conclusion: Behçet disease with posterior uveitis was associated with significant perifoveal and parafoveal vascular decrements in the superficial and deep retina.(AU)


RESUMO Objetivo: Avaliar achados de angiografia por tomografia de coerência óptica em pacientes com doença de Behçet com e sem acometimento ocular. Métodos: Foram incluídos 40 pacientes com doença de Behçet e 30 controles saudáveis. A densidade vascular retiniana nos plexos capilares superficial e profundo, a zona avascular foveal, o índice de circularidade, a densidade foveal e a área sem fluxo da retina superficial foram medidos automaticamente, através do software AngioVue para angiografia por tomografia de coerência óptica, e comparados entre os grupos. Resultados: A densidade vascular parafoveal e perifoveal média nos plexos capilares superficial e profundo, bem como a densidade foveal, foram significativamente menores nos olhos com uveíte de Behçet em comparação com os olhos sem uveíte de Behçet e os olhos dos controles saudáveis. Nos olhos com uveíte de Behçet, a acuidade visual logMAR mostrou correlação moderada com a densidade vascular parafoveal e perifoveal e com a densidade foveal (respectivamente, r=-0,43, p=0,006; r=-0,62, p<0,001; e r=-0,42, p = 0,008). Conclusão: A doença de Behçet com uveíte posterior foi associada a decréscimos significativos da vascularização perifoveal e parafoveal na retina superficial e profunda.(AU)


Subject(s)
Humans , Uveitis/pathology , Angiography/instrumentation , Behcet Syndrome/physiopathology , Tomography, Optical Coherence/instrumentation , Fovea Centralis/blood supply
2.
J. vasc. bras ; 20: e20200191, 2021. tab, graf
Article in English | LILACS | ID: biblio-1279371

ABSTRACT

Abstract Background The contrast power injector (CPI) is the gold standard method for injecting contrast with the pressure and flow needed to generate a satisfactory images during endovascular procedures, but it is an expensive tool, narrowing its wide-scale applications. One alternative is the manual injection (MI) method, but this does not generate the pressure required for adequate visualization of anatomy. It is therefore imperative to create an alternative low-cost method that is capable of producing high quality images. Objectives To compare the injection parameters of a new mechanical device (Hand-Crank) created in a university hospital with the MI method and with the contrast power injector's ideal values. Methods A circulation phantom was constructed to simulate the pressure in the aorto-iliac territory and the injection parameters of the two methods were compared in a laboratory setting. Student's t test and the Mann-Whitney test were used for statistical analysis. Three vascular surgery residents (the authors) performed the injections (each performed 9 tests using conventional manual injection and 9 tests using the Hand-Crank, totaling 54 injections). Results There were statistical differences between the two methods (p<0.05) in total volume injected until maximum pressure was attained, pressure variation, maximum pressure, total injection time, and time to reach the maximum pressure. Conclusions The Hand-Crank can achieve higher maximum pressure, higher average flow, and lower injection time than the manual method. It is a simple, low-cost, and effective tool for enhancing injection parameters in an experimental setup. It could help to produce higher quality images in a clinical scenario.


Resumo Contexto A bomba injetora é o método padrão-ouro para a injeção de contraste em aortografias. Entretanto, é uma ferramenta de alto custo, o que limita o seu uso. A injeção manual surge como alternativa, mas a pressão gerada com esse método é baixa, e, por isso, a qualidade das imagens não é usualmente satisfatória. Assim, a criação de um método de baixo custo capaz de gerar imagens de qualidade é imperativo. Objetivos Comparar os parâmetros de injeção de um novo dispositivo mecânico (manivela articulada) criado em um hospital universitário com os parâmetros da injeção manual e com os valores ideais da bomba injetora. Métodos Um simulador do território aórtico foi construído, e parâmetros de injeção entre os diferentes métodos em um cenário laboratorial controlado foram analisados. O teste t de Student e o teste de Mann-Whitney foram usados para análise estatística. Três residentes de Cirurgia Vascular realizaram os testes (nove usando o novo dispositivo, e nove usando a injeção manual, totalizando 54 injeções). Resultados Houve diferença estatisticamente significativa (p < 0,05) entre os dois métodos, considerando os parâmetros: variação de pressão, pressão máxima, tempo de injeção, tempo até a pressão máxima e volume até a pressão máxima. Conclusões A manivela articulada atingiu níveis superiores de pressão e de velocidade de injeção, com menor tempo de injeção do que a injeção manual. É um dispositivo simples, de baixo custo e com resultados comparáveis à bomba injetora, o que sugere seu uso potencial na geração de imagens satisfatórias em aortografias.


Subject(s)
Infusion Pumps , Radiology, Interventional/instrumentation , Contrast Media/administration & dosage , Vascular Surgical Procedures , Angiography/instrumentation , Low Cost Technology , Costs and Cost Analysis , Endovascular Procedures , Injections/instrumentation
3.
Ann. hepatol ; 16(3): 460-464, May.-Jun. 2017. graf
Article in English | LILACS | ID: biblio-887259

ABSTRACT

ABSTRACT The Abernethy malformation is a rare congenital malformation defined by the presence of an extrahepatic portosystemic shunt. Although most patients are asymptomatic, clinical encephalopathy is present in 15% of cases. We present a patient with type 2 Abernethy malformation, hyperammonemia, and encephalopathy. Shunt closure was performed successfully using interventional angiography; however, hyperammonemia recurred 3 months later. The diagnosis of Abernethy malformation can be made easily, but the ideal patient management strategy has not yet been established. This is the first reported patient with recurrence of hyperammonemia after interventional treatment; we discuss the therapeutic options for Abernethy malformation.(AU)


Subject(s)
Humans , Congenital Abnormalities/physiopathology , Brain Diseases/etiology , Hyperammonemia/etiology , Angiography/instrumentation , Portasystemic Shunt, Surgical
4.
J. vasc. bras ; 12(4): 329-334, Oct-Dec/2013. graf
Article in English | LILACS | ID: lil-699135

ABSTRACT

Aneurysms of the subclavian-axillary segment are rare, but when diagnosed they must be treated. This article describes two cases of aneurysms of the upper extremities, one in a subclavian artery and the other in an axillary artery. The first case was a 71-year-old male with a pulsating supraclavicular bulge on the right and muscle weakness in the ipsilateral extremity. Duplex scanning and arteriography confirmed the diagnosis of aneurysm of the right subclavian artery and the patient underwent aneurysmectomy and end-to-end anastomosis. The second case was a 24-year-old female patient, with no history of comorbidities, who presented with a pulsating mass in the right axillary region and paresthesia of the ipsilateral extremity. Duplex scanning and arteriography confirmed an aneurysm in the right axillary artery, which was successfully treated with aneurysmectomy and end-to-end anastomosis. Pathology findings showed that the first case was an atherosclerotic aneurysm and the second was a congenital aneurysm.


Os aneurismas do segmento subclávio-axilar são de ocorrência rara e, uma vez diagnosticados, devem ser tratados. Neste trabalho, relatamos dois casos de aneurismas de membros superiores, sendo um da artéria subclávia e outro da artéria axilar. No primeiro caso, o paciente de 71 anos, sexo masculino, apresentava abaulamento pulsátil supraclavicular direito associado à fraqueza muscular no membro ipsilateral. Foram realizados duplex scan e arteriografia, que confirmaram o diagnóstico de aneurisma da artéria subclávia direita, sendo o paciente submetido à aneurismectomia com anastomose término-terminal. No segundo caso, uma paciente de 24 anos, do sexo feminino, sem antecedentes mórbidos ou comorbidades, apresentava queixa de massa pulsátil na região axilar direita associada à parestesia no membro ipsilateral. O duplex scan e a arteriografia confirmaram o aneurisma da artéria axilar direita, que foi tratado com aneurismectomia e anastomose término-terminal com sucesso. O diagnóstico anátomo-clínico foi de aneurisma aterosclerótico no primeiro caso e, no segundo caso, de aneurisma congênito.


Subject(s)
Humans , Male , Female , Young Adult , Aged , Aneurysm/surgery , Aneurysm/congenital , Aneurysm/diagnosis , Axillary Artery/pathology , Subclavian Artery/pathology , Angiography/instrumentation
6.
Article in English | IMSEAR | ID: sea-86142

ABSTRACT

Recent advances in interventional cardiology, pharmacotherapeutics and modern surgical management in tertiary cardiac care centers have tremendously improved the present treatment of Pulmonary Embolism (PE). CT pulmonary angiography (CTPA), nuclear lung scan (V/Q scan), D-dimer test and modern echocardiography have revolutionized the diagnostic methodology and risk assessment criteria. Cardiogenic shock or systolic hypotension (BP < 90 mmHg) and presence of right ventricular dysfunction (or failure) are two principal criteria which govern the severity of pulmonary embolism. While all patients of pulmonary embolism require anticoagulation, systemic thrombolytic therapy is the mainstay of initial treatment in massive and submassive pulmonary embolism. When thrombolysis is contraindicated or has failed, urgent surgical embolectomy or catheter embolectomy may be life saving procedures in severe pulmonary embolism.


Subject(s)
Acute Disease , Angiography/instrumentation , Antifibrinolytic Agents/therapeutic use , Embolectomy/methods , Fibrinolytic Agents/therapeutic use , Humans , Pulmonary Embolism/diagnosis , Streptokinase/therapeutic use , Thrombolytic Therapy , Tissue Plasminogen Activator/therapeutic use , Tomography, X-Ray Computed/instrumentation , Urokinase-Type Plasminogen Activator/therapeutic use
7.
Acta gastroenterol. latinoam ; 36(3): 131-138, 2006. ilus
Article in Spanish | LILACS | ID: lil-461599

ABSTRACT

Objetivo: mostrar una nueva técnica de evaluación prequirúrgica del hígado utilizando tomografía computada multidetector (TCMD), determinando la utilidad de las reconstrucciones angiográficas, la volumetría hepática y la hepatectomía virtual, en correlación con los hallazgos quirúrgicos. Métodos: veinte pacientes con tumores hepáticos primarios o secundarios fueron evaluados con TCMD y luego operados. Las TC se efectuaron con técnica de doble fase (arterial y venosa) con un tomógrafo de 4 filas de detectores (Mx8000; Philips Medical Systems) luego de la inyección de 120ml de contraste endovenoso con una bomba inyectora. La adquisición se realizó con una colimación de 4x2.5mm. Las imágenes se evaluaron en conjunto con los cirujanos. Se calcularon los volúmenes hepáticos, se realizaron reconstrucciones vasculares y se efectuó la hepatectomía virtual. Se determinó la correlación del volumen de hígado a resecar establecido por la hepatectomía virtual y el de la pieza quirúrgica mediante el método de Bland y Altman. Resultados: la hepatectomía virtual permitió planificar y realizar en todos los pacientes la cirugía en un solo tiempo quirúrgico. No se produjeron complicaciones. El coeficiente de correlación fue 0.83 (IC 95%: -132.08- 159.78). Conclusiones: la hepatectomía virtual prequirúrgica es una nueva herramienta diagnóstica de la TCMD que, junto con las reconstrucciones vasculares, es útil para determinar la técnica quirúrgica a realizar en cada paciente y para estimar si el volumen hepático remanente será suficiente para evitar el desarrollo de una insuficiencia hepática post-quirúrgica.


Aim: to show a new technique of presurgical liver tumor evaluation using multidetector computed tomography (MDCT), determining the usefulness of angiographic reconstructions, presurgical virtual hepatectomy and 3D liver volume determination, in correlation with surgery findings. Methods: twenty patients with primary or secondary liver tumors were evaluated with MDCT and then operated on. Dualphase CT was performed in all patients on a 4-row multidetector CT scanner (Mx8000; Philips Medical Systems) after mechanical injection of 120ml of iodinated contrast medium. Scanning was performed using a detector configuration of 4x2.5mm. Images were sent to a workstation and they were analysed with the surgeons. The 3D volumes of each lesion, of the total liver and of the segments to be resected were calculated. Vascular reconstructions and virtual hepatectomy were also performed. Correlation of the liver volume between MDCT and surgery was calculated using the Bland and Altman method. Results: virtual liver segmentation allowed to perform the surgery in 100 % of the patients in one time and there were no complications. The correlation coefficient was 0.83 (CI 95%: -132.08, 159.78). Conclusions: presurgical liver hepatectomy is a new application tool of MDCT. The angiographic findings and the volume determination are useful to determine the surgical technique for each patient and this information allows the surgeons to know if the remnant liver will be enough for the patients to avoid a post-surgical liver insufficiency.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Angiography/methods , Hepatectomy/methods , Image Processing, Computer-Assisted , Image Processing, Computer-Assisted/methods , Liver Neoplasms , Liver , Tomography, X-Ray Computed/methods , Angiography/instrumentation , Contrast Media , Hepatectomy/instrumentation , Hepatic Artery , Hepatic Veins , Imaging, Three-Dimensional , Liver Neoplasms/pathology , Liver Neoplasms/surgery , Liver/blood supply , Liver/pathology , Organ Size
8.
Rev. colomb. neumol ; 7(1): 38-44, mar. 1995. tab
Article in Spanish | LILACS | ID: lil-190659

ABSTRACT

En un período de 20 años, se operaron 15 casos de secuestro pulmonar (SP); 11 fueron hombres, y la edad media fue de 34 años (rango 10-56 años). Doce pacientes fueron sintomáticos. La angiografía preoperatoria practicada a trece pacientes, fue diagnóstica en todos los casos. En 86 por ciento de los pacientes el SP se localizó en el segmento basal posterior. La cirugía fue practicada en todos los casos sin mortalidad; catorce fueron intralobares (SIL) y no fue estralobar (SEL). En un paciente se encontró incidentalmente un carcinoma bronquioloalveolar. El SP aunque infrecuente es importante de tener en mente ya que puede asociarse a infecciones pulmonares crónicas severas y otras enfermedades muy incapacitantes o potencialmente letales, tales como el cáncer de pulmón. La cirugía es el tratamiento de elección, e idealmente requiere que el diagnóstico se haga preoperatoriamente, para detectar el vaso anómalo y evitar accidentes quirúrgicos que puede ser fatales; esto es ahora más fácil con la nueva tecnología no invasiva en imágenes, sin embargo un alto índice de sospecha es necesario.


Subject(s)
Humans , Angiography , Angiography/instrumentation , Angiography/statistics & numerical data , Bronchopulmonary Sequestration/classification , Bronchopulmonary Sequestration/complications , Bronchopulmonary Sequestration/diagnosis , Bronchopulmonary Sequestration/diet therapy , Bronchopulmonary Sequestration/economics , Bronchopulmonary Sequestration/embryology , Bronchopulmonary Sequestration/nursing , Thoracic Surgery
9.
Bahrain Medical Bulletin. 1995; 17 (3): 116-7
in English | IMEMR | ID: emr-36525

ABSTRACT

We report an unusual case of a 44 year old woman who developed caecal infarction following a routine percutaneous transfemoral arteriography performed for worsening intermittent claudication


Subject(s)
Female , Cecum/physiopathology , Angiography/instrumentation
10.
Acta méd. colomb ; 19(5): 292-9, sept.-oct. 1994. ilus, tab
Article in Spanish | LILACS | ID: lil-292940

ABSTRACT

La tromboangeítis obliterante o enfermedad de Buerger ha sido reconocida como entidad patológica desde hace más de 80 años. Afecta primordialmente las arterias de miembros inferiores. Dentro de los criterios utilizados para su diagnóstico se incluyen los cambios arteriográficos en pacientes con enfermedad de Buerger. Informamos nuestra experiencia en estudios arteriográficos en pacientes con enfermedad de Buerger en los últimos cinco años. Llamamos la atención sobre la alta frecuencia de lesiones proximales a la arteria poplítea (57 por ciento). Los signos arteriográficos más frecuentes encontrados fueron tortuosidad de los vasos (57 por ciento), adelgazamiento progresivo del lumen (50 por ciento), alternancia de la lesión (50 por ciento), adelgazamiento abrupto (50 por ciento), siendo menos frecuentes los signos clásicamente descritos para la enfermedad como lo son: colaterales en tirabuzón (29 por ciento), signo de Martorrell (21 por ciento), corrugado de la pared del vaso (14 por ciento) e imagen en raíz de árbol (7 por ciento). Todas las arteriografías mostraron múltiples hallazgos de compromiso vascular, entre 3 y 7 de los signos descritos para la enfermedad


Subject(s)
Humans , Angiography , Angiography/instrumentation , Angiography/trends , Angiography/statistics & numerical data , Thromboangiitis Obliterans/drug therapy , Thromboangiitis Obliterans/physiopathology , Thromboangiitis Obliterans/surgery , Thromboangiitis Obliterans/therapy
11.
Rev. mex. radiol ; 48(2): 57-63, abr.-jun. 1994. ilus
Article in Spanish | LILACS | ID: lil-138941

ABSTRACT

Las angiodisplasias congénitas (ADC) o malformaciones arteriovenosas (MAV) continúan en la actualidad mal clasificadas y por lo tanto tratadas en forma deficiente por la mayor parte de los médicos. Presentamos la experiencia inicial en el diagnóstico y tratamiento radiológico de las mismas, utilizando la clasificación de Malan y Puglionissi, así como también de la Yasargil. Se emplearon diversos agentes de embolización (espirales de alambre, gelfoam, farmaflebón y etanol). Se trataron con técnicas embolizantes y esclerosantes a 13 pacientes de una serie de 48, con rango de edad entre 7 y 75 años, el número de embolizaciones varió desde una hasta más de 3 veces, el porcentaje de éxito fluctuó entre el 40 y el 90 por ciento teniendo una complicación que fue resuelta satisfactoriamente. Se hace énfacis en la necesidad de integrar un equipo interdisciplinario para el diagnóstico y tratamiento temprano de las mismas con el propósito de obtener mejores resultados


Subject(s)
Humans , Male , Female , Infant , Adolescent , Adult , Middle Aged , Angiography/instrumentation , Angiography , Hamartoma/congenital , Hamartoma , Hemangioma/congenital , Hemangioma , Angiomatosis/congenital , Angiomatosis
12.
Saudi Heart Journal. 1994; 5 (2): 7-15
in English | IMEMR | ID: emr-35356

ABSTRACT

Between November 1991 and March 1994, we performed 66 percutaneous coronary atherectomy procedures using Simpson atherocaths in 59 males and seven females with a mean age of 52 +/- 10.9 years and a mean CCS anginal class of 2.8 +/- 0.9. Vessels recanalized patients. The mean size of the artery dilated was 3 +/- 0.4mm. Additional intervention was one in 27.3% to achieve optimal residual lumen. Success rate was 97%. Emergency CABG surgery was required in one patient who died one week postoperatively. Follow up catheterization in patients who had finished six months post procedure showed a restenosis rate of 27.3%. We conclude that the procedure has a high success rate and acceptable complication rate and can be used in revascularization of arteries with large size and suitable eccentric lesions


Subject(s)
Humans , Angiography/instrumentation
13.
Saudi Heart Journal. 1994; 5 (2): 60-70
in English | IMEMR | ID: emr-35363
14.
New Egyptian Journal of Medicine [The]. 1993; 9 (6): 1750-4
in English | IMEMR | ID: emr-30282
15.
Saudi Heart Journal. 1993; 4 (2): 63-9
in English | IMEMR | ID: emr-30806

ABSTRACT

To our knowledge, this is the first report of Takayasu's arteritis from Arabia. Seven patients out of ten were Saudis. Seven were females and three were males. Chest radiograph is invaluable in the evaluation of this disease since it allows visualization of the contour of the aorta with calcification of aortic wall. Carotid duplex can initially suggest the diagnosis based on characteristic sonogrphic features of the disease, however, panarteriography helps in evaluation of the extent of the disease and the state of collateralization


Subject(s)
Humans , Aorta/diagnostic imaging , Angiography/instrumentation
16.
Rev. mex. radiol ; 46(1,supl): 19-23, nov. 1992. ilus
Article in Spanish | LILACS | ID: lil-117816

ABSTRACT

La angioplastía transluminal percutánea (ATP) de los troncos supraórticos son en la actualidad un método seguro, eficaz y económico para el tratamiento de las lesiones estenóticas de los vasos con destino cervicoencefálico, además de que los indices de morbimortalidad son similares o menores a los publicados para endarterectomía. Este trabajo presenta una revisión bibliografíca de la técnica, indicaciones, resultados y complicaciones de la ATP. La puede llegar a ser método de elección par el tratamiento de las estenósis no ulceradas de los troncos supraórticos.


Subject(s)
Humans , Aortic Diseases , Arteriosclerosis/therapy , Subclavian Artery/injuries , Vertebral Artery/injuries , Angiography/instrumentation , Angioplasty, Balloon/instrumentation , Carotid Artery, External/injuries , Carotid Artery, Internal/injuries , Brachiocephalic Trunk/injuries
17.
Rev. argent. radiol ; 56(2): 125-28, abr.-jun. 1992. ilus
Article in Spanish | LILACS | ID: lil-115461

ABSTRACT

La rotura y migración de un fragmento de catéter venoso central o angiográfico es una situación poco frecuente pero grave. Suele asociarse con una alta morbimortalidad como consecuencia de taquiarritmias cardíacas, sepsis o complicaciones tromboembólicas. La extracción del catéter por vía percutánea endovascular previene o resuelve estas complicaciones. Esta técnica es altamente efectiva y segura realizada por un equipo experimentado en terapéutica endovascular. Ha reemplazado la extracción por toracotomía a cielo abierto, que a priori, carece de indicaciones


Subject(s)
Humans , Male , Female , Adolescent , Aged , Foreign-Body Migration/diagnosis , Radiography/trends , Angiography , Angiography/adverse effects , Angiography/instrumentation , Foreign-Body Migration/complications , Foreign-Body Migration , Radiography/statistics & numerical data
18.
In. Restrepo G., Jorge Emilio; Guzman V., Jose Miguel; Botero A., Rafael Claudino; Velez A., Hernan; Ruiz P., Oscar. Gastroenterologia hematologia nutricion. Medellin, Corporacion para Investigaciones Biologicas, 1990. p.353-64, ilus.
Monography in Spanish | LILACS | ID: lil-133886
20.
J. bras. urol ; 6(3): Pt, jul.-set. 1980. ilus
Article in Portuguese | LILACS | ID: lil-100074

ABSTRACT

A indicaçäo de arteriografia renal seletiva no câncer de urotélio é discutivel, pois a imagem näo é típica na maioria dos casos publicados e pouco contribui para a confirmaçäo diagnóstica. Os autores salientam a importância relativa das alteraçöes que levam ao diagnóstico do carcinoma de células transicionais do trato urinário superior e apresentam um caso em que a patologia foi identificada com nitidez no pré-operatório


Subject(s)
Aged , Humans , Male , Angiography/instrumentation , Kidney Pelvis/pathology , Kidney , Pelvic Neoplasms/surgery
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