Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 9 de 9
Filter
1.
Horiz. med. (Impresa) ; 23(4)oct. 2023.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1528676

ABSTRACT

La aterectomía rotacional es un procedimiento específico utilizado para el manejo de lesiones coronarias complejas, especialmente cuando existe calcificación de las arterias coronarias (CAC). Esta técnica fue muy utilizada hasta la última década del siglo pasado; actualmente, aunque es poco usada, juega un papel importante en pacientes que podrían ser candidatos a revascularización quirúrgica pero que, por diferentes patologías ―como la enfermedad ateromatosa difusa, en la que se requieren estents largos, reestenosis in-stent, lesiones ostiales calcificadas y oclusiones totales crónicas―, se rechaza la opción quirúrgica. La aterectomía rotacional es un método que utiliza una fresa recubierta de diamante para reducir el volumen de las placas ateroescleróticas y la calcificación de los vasos. Este dispositivo dispersa la placa en microfragmentos, con lo que se consigue un aumento del diámetro luminal. Estos fragmentos, que tienen un diámetro mínimo, pasan predominantemente a la circulación capilar y luego son absorbidos por el sistema reticuloendotelial. Dentro de las complicaciones de esta técnica destacan la disección arterial, el atrapamiento del dispositivo, la bradicardia y la microperforación de arterias coronarias. Esta última puede ser corregida con el uso de trombina, de grasa subcutánea o de perlas. Este artículo reporta el caso de una paciente anciana con enfermedad coronaria multivaso asociada a calcificación extensa de todas las arterias coronarias, por una historia de radioterapia recibida en años anteriores por cáncer de mama y que, al no ser candidata a terapia quirúrgica por cirugía cardiovascular, requirió manejo con aterectomía rotacional que se vio complicada por microperforación de una arteria coronaria, pero que posteriormente evolucionó de manera satisfactoria.


Rotational atherectomy is a specific procedure for managing complex coronary artery lesions, especially when there is coronary artery calcification (CAC). This technique was widely used until the last decade of the 20th century; however, although it is rarely used, it currently plays an important role in patients who could be candidates for surgical revascularization but reject surgeries due to different pathologies-such as diffuse atheromatous disease requiring long stents, in-stent restenosis, calcified ostial lesions and chronic total occlusions. Rotational atherectomy is a method that uses a diamond-coated burr to reduce the volume of atherosclerotic plaques and calcification of vessels. This device breaks up plaque into microfragments, leading to an increase in lumen diameter. These fragments, which have a tiny diameter, pass predominantly into the capillary circulation and are then absorbed by the reticuloendothelial system. Among the complications of this technique are arterial dissection, device entrapment, bradycardia and microperforation of coronary arteries. The latter can be corrected with the use of thrombin, subcutaneous fat or beads. This article reports the case of an elderly female patient with multivessel coronary artery disease associated with extensive calcification of all the coronary arteries secondary to radiotherapy received in previous years for breast cancer. The patient, not being a candidate for cardiovascular surgery, required a rotational atherectomy that resulted in a microperforation of a coronary artery but with good subsequent progress.

3.
J. Transcatheter Interv ; 30: eA20220012, 20220101. ilus
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1401756

ABSTRACT

A aterectomia coronária com Excimer Laser melhorou significativamente nos últimos anos, utilizando emissão ultravioleta de alta energia e comprimento de onda curto, com menor penetração e menor emissão de calor, resultando em menos danos aos tecidos e menos complicações. Descrevemos o caso de um paciente do sexo masculino, 66 anos, ex-tabagista, hipertenso, diabético, dislipidêmico. Foi submetido a múltiplas intervenções coronárias percutâneas na artéria descendente anterior com stents não farmacológicos e farmacológicos. Na última intervenção coronária percutânea, o stent foi subexpandido, e o paciente apresentou trombose aguda do stent e reestenose recorrente do stent. Foram realizadas novas intervenções coronárias percutâneas com aterectomia coronária com Excimer Laser adjuvante, devido à angina refratária, com uso de carga progressiva e injeção de soro fisiológico, seguidas de posterior insuflação de balão de alta pressão e implante de stent farmacológico, com resultado excelente. No acompanhamento de 8 meses, o paciente se manteve assintomático.


Excimer Laser coronary atherectomy has improved significantly in recent years, emitting high-energy ultraviolet and short wavelength with less penetration and heat emission, ultimately leading to less tissue damage and fewer complications. We described a case of a 66-year-old male patient, former smoker and suffering from hypertension, diabetes mellitus, and dyslipidemia. He underwent multiple percutaneous coronary interventions in the left anterior descending artery with bare metal and drug-eluting stents. In the last percutaneous coronary intervention, the stent was underexpanded and the patient presented acute stent thrombosis and recurrent stent restenosis. New percutaneous coronary interventions with adjunctive Excimer Laser coronary atherectomy were undertaken due to refractory angina, using progressive load and saline injection, followed by subsequent high-pressure balloon inflation and drug-eluting stent implantation with an excellent result. At 8-month follow-up, the patient was asymptomatic.

4.
J. Transcatheter Interv ; 30: eA20210034, 20220101. ilus
Article in English, Portuguese | LILACS-Express | LILACS | ID: biblio-1401883

ABSTRACT

O tratamento de lesões reestenóticas intra-stent, principalmente as calcificadas, com subexpansão do stent, geralmente requer o uso de técnicas mais complexas para sua execução, como a aterectomia rotacional. O caso se trata de um paciente do sexo masculino com lesão reestenótica focal intra-stent de 99% na origem do primeiro ramo diagonal, local onde foram implantados dois stents há 14 anos. Após falha da angioplastia apenas com balões, realizou-se a ablação da placa e de parte das hastes dos stents pela técnica de aterectomia rotacional, o que possibilitou o implante de novo stent com sua expansão total.


Treatment of in-stent restenosis lesions, especially calcified lesions, with stent underexpansion, generally requires more complex techniques, such as rotational atherectomy. The case reported is a male patient with a 99% in-stent focal restenosis lesion at the origin of the first diagonal branch, where two stents were implanted 14 years ago. After failure of balloon angioplasty alone, ablation of the plaque and part of the stent struts was performed using the rotational atherectomy technique, which allowed the implantation of a new stent which was totally expanded.

5.
Arq. bras. cardiol ; 113(6): 1151-1154, Dec. 2019. graf
Article in English | LILACS | ID: biblio-1055066

ABSTRACT

Abstract Transcatheter aortic valve implantation (TAVI) is an established treatment for severe aortic stenosis (AS) in patients with elevated surgical risk. Concomitant coronary artery disease affects 55-70% of patients with severe AS. Percutaneous coronary intervention in patients with TAVI can be challenging. We report a case of acute coronary obstruction immediately following transapical TAVI deployment requiring emergent rotational atherectomy.


Resumo O implante valvar aórtico transcateter (TAVI) é um tratamento estabelecido para estenose aórtica grave (EA) em pacientes com risco cirúrgico elevado. Doença arterial coronariana concomitante afeta 55-70% dos pacientes com EA grave. A intervenção coronária percutânea em pacientes com TAVI pode ser um desafio. Relatamos um caso de obstrução coronariana aguda imediatamente após o implante de TAVI transapical, exigindo aterectomia rotacional emergencial.


Subject(s)
Humans , Male , Aged, 80 and over , Aortic Valve Stenosis/surgery , Percutaneous Coronary Intervention/adverse effects , Transcatheter Aortic Valve Replacement/adverse effects , Aortic Valve/surgery , Aortic Valve/diagnostic imaging , Aortic Valve Stenosis/diagnostic imaging , Tomography, X-Ray Computed , Coronary Angiography , Atherectomy, Coronary/methods
6.
Cambios rev. méd ; 16(1): 78-80, ene. - 2017. ilus
Article in Spanish | LILACS | ID: biblio-1000025

ABSTRACT

Introducción: La aterectomía direccional es una técnica mínimamente invasiva que puede ser utilizada para evitar la amputación de los miembros inferiores en caso de isquemia crítica. Caso: Se presenta la primera experiencia en Ecuador, realizada en una paciente diabética e insuficiente renal. Este procedimiento logró repermeabilizar el segmento femoropoplíteo izquierdo con éxito. Discusión: La aterectomía direccional es una alternativa eficaz, mínimamente invasiva, para evitar la amputación de miembros inferiores en pacientes isquemia crítica y múltiples comorbilidades. Palabras clave: Aterectomía, isquemia, miembro inferior, pie diabético.


Introduction: Directional atherectomy is a minimally invasive technique that can be used to avoid lower limb amputation due to critical ischemia. Case report: This is the first experience in Ecuador, using this technique in a diabetic patient with chronic renal failure. The procedure achieved successful recanalization of the left femoropopliteal artery. Discusion: Directional atherectomy seems to be an alternative to avoid limb amputation in patients with critical ischemia and several comorbidities.


Subject(s)
Aged , Atherectomy , Diabetic Foot , Lower Extremity , Ischemia , Diabetes Mellitus , Peripheral Arterial Disease , Amputation, Surgical
7.
Rev. bras. cardiol. invasiva ; 23(4): 276-278, out.-dez. 2015. ilus
Article in Portuguese | LILACS | ID: biblio-846618

ABSTRACT

Paciente com 82 anos, portadora de múltiplas comorbidades, com angina do peito apesar de terapia medicamentosa otimizada. Submetida à coronariografia, que evidenciou doença triarterial com envolvimento do tronco da coronária esquerda e intensa calcificação das artérias coronárias. A cirurgia de revascularização miocárdica foi contraindicada, sendo encaminhada para intervenção coronária percutânea, realizada em dois tempos, com intervalo de 15 meses. Primeiramente, a coronária esquerda foi abordada, realizando-se aterectomia rotacional no tronco da coronária esquerda, artérias descendente anterior e circunflexa, com implante de cinco stents farmacológicos com sucesso. Posteriormente, a coronária direita foi tratada com aterectomia rotacional e implante de quatro stents farmacológicos, também com sucesso


A 82-year-old patient with multiple comorbidities and angina, in spite of optimal drug therapy, was submitted to coronary angiography, which showed three-vessel disease with left main coronary artery involvement and severe coronary artery calcification. Coronary artery bypass grafting surgery was contraindicated and the patient was referred for percutaneous coronary intervention, which was carried out in two stages, with a 15-month interval between them. Firstly, the left coronary artery was treated and rotational atherectomy was performed in the left main coronary artery, left anterior descending and left circumflex arteries, with successful implantation of five drug-eluting stents. Subsequently, the right coronary artery was treated with rotational atherectomy, and four drug-eluting stents were also successfully implanted


Subject(s)
Humans , Female , Aged, 80 and over , Stents , Atherectomy, Coronary/methods , Comorbidity , Coronary Vessels/surgery , Plaque, Atherosclerotic/therapy , Vascular Calcification/complications , Percutaneous Coronary Intervention/methods
8.
Rev. bras. cardiol. invasiva ; 20(2): 140-145, abr.-jun. 2012. tab
Article in English, Portuguese | LILACS | ID: lil-649564

ABSTRACT

Introdução: A reestenose coronária é um fenômeno pouco compreendidoe que permanece como um desafio mesmo na era dos stents farmacológicos. Este estudo tem como objetivo identificar genes envolvidos na síntese de proteínas estruturais e funcionais de células musculares lisas com expressão aumentada em placas ateromatosas de humanos associadosa hiperplasia neointimal após o implante de stents não-farmacológicos. Métodos: Placas ateromatosas foram obtidasmediante aterectomia direcionada, previamente ao implante do stent. A análise da expressão dos genes foi realizada utilizando-se o sistema Affymetrix GeneChip. Os pacientes foramsubmetidos a ultrassom intracoronário 6 meses após o procedimento para análise volumétrica intrastent. Foi avaliada a correlação entre a expressão gênica de placas ateromatosas e o porcentual de hiperplasia intimal intrastent. Resultados: A maioria dos pacientes era do sexo masculino (85,7%), com60,2 ± 11,4 anos de idade, 35,7% eram diabéticos e o porcentual de hiperplasia intimal intrastent foi de 29,9 ± 18,7%.Não houve variação do porcentual de hiperplasia intimal intrastent entre os pacientes com ou sem diabetes (29,5% vs. 30,7%; P = 0,89). Não houve correlação entre a extensão do stent e o porcentual de hiperplasia intimal intrastent (r = -0,26; P = 0,26) ou entre o diâmetro do stent e o porcentual dehiperplasia intimal intrastent (r = 0,14; P = 0,56). Oito genes envolvidos na síntese de proteínas estruturais e funcionais de células musculares lisas apresentaram correlação positiva como porcentual de hiperplasia intimal intrastent. Conclusões: As lesões coronárias de novo apresentam expressão aumentada de genes relacionados com a síntese de proteínas estruturais e funcionais de células musculares lisas associados a futurahiperplasia neointimal intrastent significativa, surgindo como novos alvos terapêuticos.


Subject(s)
Humans , Male , Female , Middle Aged , Atherectomy, Coronary/methods , Atherectomy, Coronary , Gene Expression , Coronary Restenosis/complications , Drug-Eluting Stents , Stents , Risk Factors
9.
Arq. bras. cardiol ; 57(2): 115-120, ago. 1991. ilus
Article in Portuguese | LILACS | ID: lil-107932

ABSTRACT

Purpose ­ To describe a new alternativetechnique for treating coronary artery disease: the coronary atherectomy with the transluminal endarterectomy-extraction catheter. Methods ­ Four patients, 1 female and 3 males age 46 to 65 years (mean 53 ± 8.5 years), were submitted to coronary atherectomy with the transluminal endarterectomy-extraction catheter. One patient presenting stable angina, one presenting recent angina, one with residual stenosis after acute myocardial infarction treated with intravenous streptokinase and one with two episodes of syncope and ECG alterations. The treated arteries were: left anterior descending in 3 patients and left circumfCex in one. Two lesion were concentric and two were segmentary and excentric. Results ­ The coronary artery stenosis ranged from 80 to 95% (mean of 90 ± 7.1%) before the atherectomy and from 20-50% (mean of 32.5 ± 12.6%) after the atherectomy. Except thefirst patient, the other 3 were discharged in less than 48 hours after the atherectomy. None presented chest pain during the procedure and in three of them were no recordings of dissection or coronary artery perfuration. In one patient the treated artery presented total occlusion (thrombus) 15 minutes after the procedure, but was immediate and successfully reopered with balloon angioplasty. Conclusion ­ Coronary atherectomy with the "transluminal endarterectomy-extraction catheter" has shown to be a safe and feasible procedure and to bring satisfactory immediate results.


Subject(s)
Angioplasty, Balloon , Endarterectomy , Coronary Artery Disease/therapy , Coronary Angiography , Coronary Artery Disease , Cardiac Catheterization , Prognosis
SELECTION OF CITATIONS
SEARCH DETAIL