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1.
مقالة ي صينى | WPRIM | ID: wpr-982250

الملخص

The patient-specific aortic silicone model was established based on CTA data. The digital particle image velocimetry (DPIV) test method in the modified ViVitro pulsatile flow system was used to investigate the aortic hemodynamic performance and flow field characteristics before and after transcatheter aortic valve replacement (TAVR). The results showed that the hemodynamic parameters were consistent with the clinical data, which verified the accuracy of the model. From the comparative study of preoperative and postoperative effective orifice area (0.33 cm2 and 1.78 cm2), mean pressure difference (58 mmHg and 9 mmHg), percentage of regurgitation (52% and 8%), peak flow velocity (4.60 m/s and 1.81 m/s) and flow field distribution (eccentric jet and uniform jet), the immediate efficacy after TAVR is good. From the perspective of viscous shear stress and Reynolds shear stress, the risk of hemolysis and thrombotic problems was low in preoperative and postoperative patient-specific models. This study provides a set of reliable DPIV testing methods for aortic flow field, and provides biomechanical basis for the immediate and long-term effectiveness of TAVR from the perspective of hemodynamics and flow field characteristics. It has important application value in clinical diagnosis, surgical treatment and long-term evaluation.


الموضوعات
Humans , Transcatheter Aortic Valve Replacement/methods , Aortic Valve/surgery , Heart Valve Prosthesis , Hemodynamics , Aortic Valve Stenosis/diagnosis , Treatment Outcome
2.
Rev. cuba. cir ; 59(3): e908, jul.-set. 2020.
مقالة ي الأسبانية | LILACS, CUMED | ID: biblio-1144440

الملخص

RESUMEN Introducción: El síndrome de Heyde es la asociación entre estenosis valvular aórtica y sangrado gastrointestinal, por angiodisplasia intestinal. La base fisiopatológica de ese síndrome parece ser una deficiencia adquirida del factor de Von Willebrand, que lleva al sangrado de malformaciones arteriovenosas angiodisplásicas. Las alternativas de tratamiento incluyen la localización de puntos de sangrado y la cauterización, pero tal opción terapéutica está asociada a alta recurrencia. El reemplazo de la válvula parece ofrecer la mejor esperanza de resolución a largo plazo del sangrado y debe ser considerada en la mayoría de las veces. Objetivos: Presentar el caso de un síndrome de Heyde, una causa infrecuente de hemorragia digestiva. Caso clínico: Paciente de 74 años con antecedentes estenosis aórtica y sangrado gastrointestinal debido a angiodisplasia duodenal localizada en la segunda porción de esta, tratada mediante la escleroterapia. Conclusiones: El síndrome de Heyde es una asociación poco frecuente entre una valvulopatía aortica y sangrado digestivo por una angiodisplasia que puede presentarse en cualquier parte del tubo digestivo(AU)


ABSTRACT Introduction: Heyde syndrome is the association between aortic valve stenosis and gastrointestinal bleeding, due to intestinal angiodysplasia. The pathophysiological basis of this syndrome seems to be acquired Von Willebrand factor deficiency, which leads to bleeding from angiodysplastic arteriovenous malformations. Management alternatives include localization of bleeding points and cauterization, but such a therapeutic option is associated with high recurrence. Valve replacement seems to offer the best hope for long-term solving of bleeding and should be considered for most of the cases. Objectives: To present a case of Heyde syndrome, a rare cause of gastrointestinal bleeding. Clinical case: A 74-year-old patient is presented with a history of aortic stenosis and gastrointestinal bleeding due to duodenal angiodysplasia located in the second portion of it, managed by sclerotherapy. Conclusions: Heyde syndrome is a rare association between aortic valve disease and digestive bleeding due to angiodysplasia that can occur in any part of the digestive tract(AU)


الموضوعات
Humans , Male , Aged , Aortic Valve Stenosis/diagnosis , Angiodysplasia/diagnostic imaging , Gastrointestinal Hemorrhage/etiology
3.
Arch. cardiol. Méx ; 89(1): 58-73, Jan.-Mar. 2019. tab, graf
مقالة ي الأسبانية | LILACS | ID: biblio-1038478

الملخص

Resumen Introducción: El presente artículo resume la guía de práctica clínica (GPC) para la evaluación y el tratamiento de pacientes con estenosis aórtica severa en el Seguro Social del Perú (EsSalud). Objetivo: Proveer recomendaciones para la evaluación y el tratamiento de pacientes con estenosis aórtica severa en el EsSalud basadas en evidencia científica. Métodos: Se conformó un grupo elaborador local (GEG-Local) que incluyó médicos especialistas y metodólogos. El GEG-Local formuló siete preguntas clínicas que ser respondidas en la presente GPC. Se realizaron búsquedas sistemáticas de revisiones sistemáticas y, cuando fue considerado pertinente, estudios primarios en PubMed durante el 2018. Se seleccionó la evidencia para responder cada una de las preguntas clínicas planteadas. La calidad de la evidencia fue evaluada usando la metodología Grading of Recommendations Assessment, Development, and Evaluation (GRADE). En reuniones de trabajo periódicas, el GEG-Local usó la metodología GRADE para revisar la evidencia y formular las recomendaciones, los puntos de buenas prácticas clínicas y el flujograma de evaluación y tratamiento. Finalmente, la GPC fue aprobada con Resolución N.° 47 — IETSI — ESSALUD — 2018. Resultados: La presente GPC abordó siete preguntas clínicas, respecto a dos temas: la evaluación inicial y el tratamiento de la estenosis aórtica severa. Con base en dichas preguntas se formularon nueve recomendaciones (una recomendación fuerte y ocho recomendaciones débiles), 16 puntos de buena práctica clínica y un flujograma. Conclusión: El presente artículo resume la metodología y las conclusiones de la GPC para la evaluación y el tratamiento de pacientes con estenosis aórtica severa en el EsSalud.


Abstract Introduction: This article summarizes the clinical practice guide (CPG) for the evaluation and management of patients with severe aortic stenosis in the Social Security of Peru (EsSalud). Objective: To provide clinical evidence-based recommendations for the evaluation and management of patients with severe aortic stenosis in the EsSalud. Methods: A local guideline development group (local GDG) was established, including medical specialists and methodologists. The local GDG formulated 7 clinical questions to be answered by this CPG. Systematic searches of systematic reviews and, when it was considered pertinent, primary studies, were conducted in PubMed during 2018. The evidence to answer each of the posed clinical questions was selected. The quality of the evidence was evaluated using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology. In periodic work meetings, the local GDG used the GRADE methodology to review the evidence and formulate the recommendations, points of good clinical practice, and the flowchart of evaluation and management. Finally, the CPG was approved with Resolution N.° 47 — IETSI — ESSALUD — 2018. Results: This CPG addressed 7 clinical questions regarding two issues: the initial evaluation and the management of severe aortic stenosis. Based on these questions, 9 recommendations (1 strong recommendation and 8 weak recommendations), 16 points of good clinical practice, and 1 flowchart were formulated. Conclusion: This article summarizes the methodology and evidence-based conclusions from the CPG for the evaluation and management of patients with severe aortic stenosis in the EsSalud.


الموضوعات
Humans , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/therapy , Peru , Social Security , Severity of Illness Index , Decision Trees , Practice Guidelines as Topic , Clinical Decision-Making
4.
Arch. pediatr. Urug ; 89(2): 113-121, abr. 2018. tab, ilus
مقالة ي الأسبانية | LILACS | ID: biblio-950130

الملخص

Resumen: La estenosis valvular aórtica congénita en edad pediátrica es una cardiopatía que debe ser valorada adecuadamente considerando en especial su potencial grado de severidad, a los efectos de realizar el tratamiento de forma adecuada y oportuna, evitando una complicación mayor: la muerte súbita. Se analizan los lineamientos generales para el diagnóstico y reconocimiento de su severidad así como el accionar terapéutico indicado. Por último se ejemplifica mediante cuatro casos clínicos diferentes situaciones evolutivas, mostrando los procedimientos diagnósticos y tratamientos realizados.


Summary: Congenital aortic valve stenosis in children is a heart disease that must be adequately evaluated. The potential degree of severity should be especially considered for a timely treatment in order to prevent sudden death. Guidelines for the diagnosis, recognition of severity and therapeutic action are suggested. Finally, the study presents four clinical cases, with the applied treatment and follow up.


Resumo: A estenose valvar aórtica congênita em pacientes pediátricos é uma doença cardíaca que deve ser avaliada adequadamente, considerando, em particular, seu potencial grau de severidade, a fim de realizar o tratamento adequado e oportuno, evitando a grave complicação da morte súbita. Analisamos as diretrizes gerais para o diagnóstico e reconhecimento de sua gravidade, bem como a ação terapêutica indicada. Finalmente, diferentes situações evolutivas são exemplificadas por quatro casos clínicos, mostrando os procedimentos diagnósticos e os tratamentos realizados.


الموضوعات
Humans , Male , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/diagnosis , Balloon Valvuloplasty , Heart Defects, Congenital
7.
In. Soeiro, Alexandre de Matos; Leal, Tatiana de Carvalho Andreucci; Accorsi, Tarso augusto Duenhas; Gualandro, Danielle Menosi; Oliveira Junior, Múcio Tavares de; Kalil Filho, Roberto. Manual da residência em cardiologia / Manual residence in cardiology. São Paulo, Manole, 2016. p.32-39.
كتاب ي البرتغالية | LILACS | ID: biblio-971583
8.
Rev. méd. Chile ; 143(9): 1206-1209, set. 2015. ilus
مقالة ي الأسبانية | LILACS | ID: lil-762690

الملخص

Pauci-immune glomerulonephritis in systemic vasculitides usually have anti-neuthrophil cytoplasmic antibodies (ANCA). However, vasculitides of large vessels such as Takayasu’s and giant cell (temporal) arteritis do not. Exceptionally ANCA(+) small vessel vasculitides are associated with large vessel vasculitis. It may be a coincidence or both vasculitides have a common pathogenesis. We report a 30 years old woman on hemodialysis due to a chronic glomerulonephritis ANCA(+) diagnosed nine years ago. Eight years later, she presented with an aortitis with severe stenosis of distal aorta and vasculitis of left subclavian artery. She was treated with adrenal steroids and cyclophosphamide. During the ensuing five years she has been stable and without signs of reactivation of the disease.


الموضوعات
Adult , Female , Humans , Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/drug therapy , Aortic Valve Stenosis/drug therapy , Aortitis/drug therapy , Cyclophosphamide/therapeutic use , Steroids/therapeutic use , Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/complications , Aortic Valve Stenosis/diagnosis , Aortitis/diagnosis , Renal Insufficiency/complications , Takayasu Arteritis/drug therapy
9.
Rev. bras. cardiol. invasiva ; 23(3): 166-172, jul.-set.2015. tab, ilus, graf
مقالة ي البرتغالية | LILACS, SES-SP, SESSP-IDPCPROD, SES-SP | ID: lil-794192

الملخص

Introdução: Estudos recentes têm demonstrado a eficácia do implante transcateter valve-in-valve para otratamento de disfunção de biopróteses em pacientes de alto risco cirúrgico. Apresentamos nossa experiênciainicial com o implante valve-in-valve.Métodos: Caracterizamos o perfil clínico, ecocardiográfico e do procedimento, e reportamos os resultados de médio prazo de pacientes com disfunção de bioprótese submetidos a implante valve-in-valve em posição aórtica. Resultados: Incluímos sete pacientes do sexo masculino, com idade de 72,6 ± 10,0 anos. O escore STS foi 9,6± 10,5%, e o EuroSCORE logístico foi 22,7 ± 14,7%. Três pacientes apresentavam dupla disfunção; dois tinham insuficiência; e dois exibiam estenose isolada. A via transfemoral foi utilizada em seis casos, e a transapical, em um caso. Os dispositivos implantados incluíram as próteses Sapien XT (n = 5) e CoreValve (n = 2). O sucesso do procedimento foi obtido em seis (85,7%) casos. Após o procedimento, o gradiente médio reduziu-se de 38,2 ± 9,6mmHg para 20,9 ± 5,9 mmHg, e a área valvar elevou-se de 1,2 ± 0,4 cm2 para 1,5 ± 0,5 cm2. Ao final de 1 ano, nãoocorreram óbitos e nem outros desfechos adversos significativos; 80% dos pacientes encontravam-se em classefuncional NYHA I/II. Os gradientes transvalvares e a área valvar permaneceram inalterados nesse período. Conclusões: O procedimento valve-in-valve foi eficaz na maioria dos pacientes de alto risco cirúrgico comdisfunção de bioprótese. Quando realizado em pacientes bem selecionados, resulta em desfechos clínicos e hemodinâmicos satisfatórios.


Background: Recent studies have demonstrated the efficacy of the transcatheter valve-in-valveimplantation for the treatment of bioprosthesis dysfunction in high-risk surgical patients. This study presents the initial experience with valve-in-valve implantation. Methods: Clinical, echocardiographic, and procedural profiles were characterized, and the mid-term results of patients with surgical bioprosthesis dysfunction submitted to valve-in-valve implantation in theaortic position were reported.Results: Seven male patients were included, aged 72.6 ± 10.0 years. The STS score was 9,6 ± 10,5%, andthe logistic EuroSCORE was 22.7 ± 14.7%. Three patients had combined aortic bioprosthesis failure; two had isolated regurgitation; and two had isolated stenosis. The transfemoral access was used in six cases, and the transapical access in one case. Implanted devices included Sapien XT (n = 5) and CoreValve (n = 2) prostheses. Procedural success was achieved in six (85.7%) cases. After the procedure, the mean gradient decreased from 38.2 ± 9.6 mmHg to 20.9 ± 5.9 mmHg, and the valve area increased from 1.2 ±0.4 cm2 to 1.5 ± 0.5 cm2. After 1 year, there were no deaths and no other significant adverse outcomes; 80% of patients were in NYHA functional class I/II. The transvalvular gradients and valve area remained unchanged in this period.


الموضوعات
Humans , Male , Aged , Bioprosthesis , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/therapy , Transcatheter Aortic Valve Replacement/methods , Data Interpretation, Statistical , Echocardiography/methods , Risk Factors , Prostheses and Implants/methods , Risk Assessment/methods , Drug Therapy/methods , Aortic Valve/surgery , Heart Ventricles
10.
Rev. chil. cardiol ; 34(3): 214-219, 2015. ilus, tab
مقالة ي الأسبانية | LILACS | ID: lil-775491

الملخص

Una mujer de 21 años portadora de Síndrome de Alagille debutó con disnea progresiva, palpitaciones y dolor torácico. Se excluyó la presencia de síndrome coronario agudo y de tromboembolismo pulmonar. Un test de marcha fue severamente limitado por disnea. La ecocardiografía doppler color mostró una válvula aórtica bicúspide severamente estenótica. Se efectuó un reemplazo valvular aórtico con prótesis mecánica con buena evolución.


A 21 year old woman with Alagille syndrome, pre-sented with progressive dyspnea, palpitations and chest pain. Acute coronary syndrome and pulmonary embolism were ruled out. A walk test revealed significant dyspnea at a low level of exertion. Color Doppler echocardiography showed a severely stenotic bicuspid aortic valve with severe stenosis. An aortic valve replacement with a mechanical prosthesis was performed uneventfully.


الموضوعات
Humans , Female , Adult , Aortic Valve Stenosis/diagnosis , Alagille Syndrome/complications , Mitral Valve/diagnostic imaging , Aortic Valve Stenosis/surgery , Heart Valve Prosthesis , Mitral Valve/surgery
11.
Rev. Soc. Cardiol. Estado de Säo Paulo ; 24(2): 48-54, abr.-jun. 2014. ilus
مقالة ي البرتغالية | LILACS | ID: lil-740489

الملخص

A quantificação da gravidade da estenose aórtica é de fundamental importância na avaliação diagnóstica e prognóstica. É realizada mais frequentemente com os gradientes transvalvares, a velocidade máxima do fluxo através da valva e o cálculo da área valvar aórtica por meio da ecocardiografia Doppler. Outros métodos de imagem, como a tomografia computadorizada e ressonância magnética cardíaca, permitem obter informações complementares à ecocardiografia na avaliação da gravidade da doença. Nos últimos anos, com o melhor entendimento da doença, foram identificadas novas condições hemodinâmicas na estenose aórtica, como as situações de baixo fluxo transvalvar, com ou sem disfunção sistólica ventricular esquerda. Estes aspectos e a possibilidade de implante de prótese valvar por via percutânea trouxeram novas necessidades e desafios na avaliação diagnóstica de pacientes sintomáticos ou assintomáticos com estenose aórtica, os quais têm sido progressivamente superados com auxílio dos métodos de imagem.


The severity of aortic valve stenosis is fundamental for diagnosis and prognosis of the disease. This evaluation is most commonly performed by measuring transvalvar pressure gradients, peak aortic valve velocity and aortic valve area. Other cardiovascular imaging methods such as tomography and cardiac magnetic resonance al/ow additional information for evaluating the severity of the disease. In the last years with the improved knowledge of the disease, new hemodynamic conditions in aortic stenosis were identified, such as transval var low flow with or without left ventricular systolic dysfunction. The possibility of percutaneous prosthetic valve implantation is a challenge for new information in both symptomatic and asymptomatic patients.


الموضوعات
Humans , Male , Female , Middle Aged , Diagnostic Imaging/methods , Echocardiography, Doppler/methods , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/therapy , Heart Valve Prosthesis , Dobutamine/administration & dosage , Heart Valve Diseases/etiology , Heart Valve Diseases/therapy , Magnetic Resonance Spectroscopy/methods , Ventricular Function , Prognosis , Exercise Test/methods , Tomography, X-Ray Computed/methods , Stroke Volume
12.
Rev. bras. cardiol. (Impr.) ; 27(2): 131-134, mar.-abr.2014.
مقالة ي البرتغالية | LILACS | ID: lil-719586

الملخص

Os relatos de implante de valve-in-valve no Brasil são escassos, mas têm aumentado de frequência nos países desenvolvidos. Relata-se o caso de paciente feminina, 73 anos, que se submeteu a implante transcutâneo de prótese aórtica valve-in-valve há quatro anos. A paciente havia implantado bioprótese aórtica por cirurgia há 24 anos, evoluindo com degeneração da prótese, tendo recusado a troca valvar por nova cirurgia aberta. Após avaliação de equipe multidisciplinar foi indicado o implante transcutâneo de prótese aórtica valve-in-valve. Após quatro anos, a paciente apresentou melhora da classe funcional de insuficiência cardíaca e a durabilidade da prótese tem sido satisfatória.


Although valve-in-valve implantation reports are still sparse in Brazil, they are becoming more frequent in the developed countries. This case report addresses a 73-year-old female patient who underwent a transcutaneous aortic valve-in-valve prosthesis implant four years ago, subsequent to an aortic bioprosthesis implant operation 24 years earlier that degenerated, with the patient refusing to replace the valve through a further open surgery. After evaluation, a multidisciplinary team recommended a transcutaneous aortic valve-in-valve prosthesis implant. Four years later, the functional class of her heart failure has improved and the durability of the prosthesis has been satisfactory.


الموضوعات
Humans , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/therapy , Heart Valve Prosthesis Implantation/adverse effects , Bioprosthesis , Creatinine/blood , Postoperative Care/methods , Dialysis/methods , Echocardiography/methods
14.
Rev. bras. cardiol. invasiva ; 21(2): 103-108, abr.-jun. 2013. tab
مقالة ي البرتغالية | LILACS, SES-SP | ID: lil-681941

الملخص

INTRODUÇÃO: A incidência de refluxo paraprotético (RPP) parece maior entre os pacientes submetidos a implante de prótese aórtica transcateter e sua potencial associação com aumento da mortalidade tardia tem suscitado preocupação na comunidade científica. Nosso objetivo foi avaliar a incidência e o impacto clínico e estabelecer preditores do RPP em nossa casuística. MÉTODOS: Entre julho de 2009 e fevereiro de 2013, 112 pacientes foram submetidos a implante de prótese aórtica transcateter. O grau do RPP pós-procedimento foi avaliado segundo os critérios do VARC 2. Dividiu-se a população em grupo RPP ausente/RPP discreto e grupo RPP moderado/RPP grave. RESULTADOS: A média da idade foi de 82,5 ± 3,9 anos, 58,9% eram do sexo feminino e o EuroSCORE logístico foi de 23,6 ± 13,4. Houve queda do gradiente sistólico médio (54,7 ± 15,3 mmHg vs. 11,7 ± 4 mmHg; P < 0,01) e ganho da área valvar aórtica (0,66 ± 0,15 cm² vs. 1,8 ± 0,3 cm²; P < 0,01). Ao final do procedimento, 46,4% não apresentaram RPP, e RRP discreto ou moderado foi observado em 42% e 11,6% dos pacientes. Nenhum paciente apresentou RPP grave. A análise multivariada identificou sexo masculino [odds ratio (OR) 5,85, intervalo de confiança (IC] 1,29-26,7; P = 0,022), valvoplastia aórtica percutânea prévia (OR 18,44, IC 2,30-147,85; P = 0,006), fração de ejeção < 35% (OR 4,160, IC 1,014-17,064; P = 0,048) e presença de hipertensão pulmonar grave (OR 7,649, IC 1,86-31,51; P = 0,005) como preditores independentes de RPP moderado/grave. CONCLUSÕES: A incidência de RPP moderado/grave foi baixa e comparável à de outras casuísticas. Sexo masculino, antecedente de valvoplastia aórtica percutânea prévia, presença de hipertensão pulmonar grave e disfunção ventricular esquerda grave foram preditores independentes dessa complicação.


BACKGROUND: The incidence of paravalvular aortic regurgitation (PAR) seems higher among patients submitted to transcatheter aortic valve implantation and its potential association with an increased late mortality has raised concerns in the scientific community. Our objective was to evaluate the incidence and clinical impact of PAR and establish PAR predictors in our patient population. METHODS: Between July/2009 and February/2013, 112 patients were submitted to transcatheter aortic valve implantation. The degree of PAR after the procedure was assessed according to the VARC 2 criteria. The population was divided into no/mild PAR group and moderate/severe PAR group. RESULTS: Mean age was 82.5 ± 3.9 years, 58.9% were female and the logistic EuroSCORE was 23.6 ± 13.4. There was a decrease in the mean systolic gradient (54.7 ± 15.3 mmHg vs 11.7 ± 4 mmHg; P < 0.01) and a gain in the aortic valve area (0.66 ± 0.15 cm² vs 1.8 ± 0.3 cm²; P < 0.01). At the end of the procedure 46.4% did not have PAR, and mild or moderate PAR was observed in 42% and 11.6% of the patients. No patient presented severe PAR. Multivariate analysis identified male gender [odds ratio (OR) 5.85, confidence interval (CI] 1.29-26.7; P = 0.022), previous percutaneous aortic val­vuloplasty (OR 18.44, CI 2.30-147.85; P = 0.006), ejection fraction < 35% (OR 4.160, CI 1.014-17.064; P = 0.048) and the presence of severe pulmonary hypertension (OR 7.649, CI 1.86-31.51; P = 0.005) as independent predictors of moderate/severe PAR. CONCLUSIONS: The incidence of moderate/severe PAR was low and comparable to other studies. Male gender, history of prior percutaneous aortic valvuloplasty, presence of severe pulmonary hypertension and severe left ventricular dysfunction were independent predictors of this complication.


الموضوعات
Humans , Cardiac Catheters , Aortic Valve Stenosis/complications , Aortic Valve Stenosis/diagnosis , Heart Valve Prosthesis Implantation/mortality , Aortic Valve Insufficiency/complications , Aortic Valve Insufficiency/diagnosis , Echocardiography, Transesophageal/methods , Echocardiography, Transesophageal , Retrospective Studies
17.
Acta méd. (Porto Alegre) ; 34: [7], 20130.
مقالة ي البرتغالية | LILACS | ID: biblio-880208

الملخص

Os autores desse artigo fazem uma revisão sobre estenose aórtica, enfatizando seus aspectos clínicos, classificação de risco e modalidades terapêuticas.


The authors of this article make a review of aortic stenosis, emphasizing its clinical aspects, risk assessment and therapeutic modalities.


الموضوعات
Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/therapy
18.
Rev. bras. cardiol. invasiva ; 21(3): 213-220, 2013. ilus, graf, tab
مقالة ي البرتغالية | LILACS | ID: lil-690651

الملخص

INTRODUÇÃO: O implante por cateter de bioprótese valvular aórtica (TAVI, do inglês transcatheter aortic valve implantation) constitui nova modalidade de tratamento destinada, sobretudo, aos pacientes com elevado risco cirúrgico. Para esses pacientes, o TAVI resultou em aumento da sobrevivência e melhora da qualidade de vida, comparativamente ao tratamento padrão (medicamentoso, com ou sem valvuloplastia aórtica percutânea). Nosso objetivo foi realizar análise de custo-efetividade da implementação do TAVI no Sistema de Saúde Suplementar brasileiro. MÉTODOS: Foram desenvolvidos um modelo preditivo, para avaliar custo-efetividade real do procedimento em longo prazo, e uma regressão de Weibull com tempo horizonte de 5 e 10 anos, para estimar dados de sobrevida por mais de 24 meses. Adicionalmente, foi desenvolvido modelo de Markov sequencial e determinístico. Resultados foram expressos como razão de custo-efetividade incremental (RCEI) por anos de vida ganhos e anos de vida livres de progressão. RESULTADOS: Para o cenário padrão, no qual o custo da TAVI foi estipulado em R$ 65 mil, o valor da RCEI (custo/ano de vida salvo) em 5 anos foi de R$ 72.520,65. Alterando-se o tempo horizonte para 10 anos, esse valor diminuiu para R$ 41.653,01. CONCLUSÕES: O modelo apontou que o TAVI apresenta efetividade superior e maior custo incremental. Além disso, a incorporação do TAVI no Rol de Procedimentos e Eventos em Saúde da Agência Nacional de Saúde Suplementar acarretaria impacto orçamentário incremental nos próximos 5 anos, variando de R$ 70 milhões a R$ 121 milhões, compatível com o de outras tecnologias já incorporadas no âmbito da Saúde Suplementar.


BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a new modality of treatment especially dedicated to patients with high surgical risk. In these patients, TAVI increased survival and improved quality of life when compared to standard treatment (drug therapy with or without percutaneous aortic balloon valvuloplasty). Our objective was to perform a cost-efficacy analysis of the implementation of TAVI in the Brazilian Supplemental Health System. METHODS: We developed a predictive model to assess the cost-effectiveness of the procedure in the long-term, and a Weibull regression analysis with a time horizon of 5 and 10 years, to estimate survival data for over 24 months. In addition, a deterministic sequential Markov model was developed. Results were expressed as incremental cost-effectiveness ratio (ICER) per years of life saved and progression-free years of life. RESULTS: In a standard scenario, where the cost of TAVI was estimated as R$ 65 millions, the ICER value (cost/year of life saved) in 5 years was R$ 72,520.65. When the time horizon was adjusted for 10 years, this amount decreased to R$ 41,653.01. CONCLUSIONS: The model indicated that TAVI has superior effectiveness and higher incremental cost. Furthermore, the incorporation of TAVI in the List of Health Procedures and Events of the Brazilian Supplemental Health System would have an incremental budgetary impact over the next 5 years, ranging from R$ 70 millions to R$ 121 millions, consistent with other technologies which have already been incorporated by the system.


الموضوعات
Bioprosthesis , Catheters , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/diagnosis , Heart Valve Prosthesis Implantation/instrumentation , Cost-Benefit Analysis/economics , Risk Factors , Supplemental Health/economics
19.
Yonsei Medical Journal ; : 596-602, 2013.
مقالة ي الانجليزية | WPRIM | ID: wpr-193946

الملخص

PURPOSE: Transcatheter aortic valve implantation (TAVI) has become an attractive therapeutic strategy for severe aortic stenosis (AS) in elderly patients due to its minimally-invasive nature. Therefore, early results of its clinical outcomes in elderly Korean patients were evaluated. MATERIALS AND METHODS: We compared early clinical outcomes of TAVI, surgical aortic valve replacement (SAVR), and optimal medical therapy (OMT) in patients aged > or =80 years with symptomatic severe AS. Treatment groups were allocated as follows: TAVI (n=10), SAVR (n=14), and OMT (n=42). RESULTS: Baseline clinical characteristics including predicted operative mortality were similar among the three groups. However, patients with New York Heart Association functional class III or IV symptoms and smaller aortic valve area were treated with TAVI or SAVR rather than OMT. In-hospital combined safety endpoints (all-cause mortality, major stroke, peri-procedural myocardial infarction, life-threatening bleeding, major vascular complication, and acute kidney injury) after TAVI or SAVR were significantly lower in the TAVI group than in the SAVR group (10.0% vs. 71.4%, respectively, p=0.005), along with an acceptable rate of symptom improvement and device success. During the follow-up period, the TAVI group showed the lowest rate of 3-month major adverse cardiovascular and cerebrovascular events, a composite of all-cause mortality, myocardial infarction, major stroke, and re-hospitalization (TAVI 0.0% vs. SAVR 50.0% vs. OMT 42.9%, p=0.017). CONCLUSION: Treatment with TAVI was associated with lower event rates compared to SAVR or OMT. Therefore, TAVI may be considered as the first therapeutic strategy in selected patients aged > or =80 years with symptomatic severe AS.


الموضوعات
Aged, 80 and over , Female , Humans , Male , Age Factors , Aortic Valve/surgery , Aortic Valve Stenosis/diagnosis , Prognosis , Risk Factors , Treatment Outcome
20.
Arq. bras. cardiol ; 98(3): 234-242, mar. 2012. ilus, tab
مقالة ي البرتغالية | LILACS | ID: lil-622521

الملخص

FUNDAMENTO: A ecocardiografia transtorácica (ETT) é rotineiramente utilizada para calcular a área da valva aórtica (AVA) pela equação de continuidade (EC). No entanto, a medida exata das vias de saída do ventrículo esquerdo (VSVE) pode ser difícil e a aceleração do fluxo no VSVE pode levar a erro de cálculo da AVA. OBJETIVO: O objetivo do nosso estudo foi comparar as medições da AVA por ETT padrão, ressonância magnética cardíaca (RM) e uma abordagem híbrida que combina as duas técnicas. MÉTODOS: A AVA foi calculada em 38 pacientes (idade 73 ± 9 anos) com a ETT padrão, planimetria cine-RM e uma abordagem híbrida: Método híbrido 1: a medição da VSVE derivada pelo ETT no numerador CE foi substituída pela avaliação de ressonância magnética da VSVE e a AVA foi calculada: (VSVE RM/*VSVE-VTI ETT)/transaórtico-VTI ETT; Método 2: Substituímos o VS no numerador pelo VS derivado pela RM e calculamos a AVA = VS RM/transaórtico-VTI ETT. RESULTADOS: Amédia de AVAobtida pela ETTfoi 0,86 cm² ± 0,23 cm² e 0,83 cm² ± 0,3 cm² pela RM-planimetria, respectivamente. A diferença média absoluta da AVA foi de 0,03 cm² para a RM versus planimetria-ressonância magnética. A AVA calculada com o método 1 e o método 2 foi de 1,23 cm² ± 0,4 cm² e 0,92cm² ± 0,32 cm², respectivamente. A diferença média absoluta entre a ETT e os métodos 1 e 2 foi de 0,37 cm² e 0,06 cm², respectivamente (p < 0,001). CONCLUSÃO: A RM-planimetria da AVA e o método híbrido 2 são precisos e demonstraram boa consistência com as medições padrão obtidas pela ETT. Portanto, o método híbrido 2 é uma alternativa razoável na eventualidade de janelas acústicas ruins ou em caso de acelerações de fluxo VSVE que limitem a precisão da ETT, particularmente em pacientes com alto risco de um estudo hemodinâmico invasivo.


BACKGROUND: Transthoracic echocardiography (TTE) is routinely used to calculate aortic valve area (AVA) by continuity equation (CE). However, accurate measurement of the left ventricular outflow tract (LVOT) can be difficult and flow acceleration in the LVOT may lead to miscalculation of the AVA. OBJECTIVE: The aim of our study was to compare AVA measurements by standard TTE, cardiac magnetic resonance imaging (MRI) and a hybrid approach combining both techniques. METHODS: AVA was calculated in 38 patients (age 73±9 years) with standard TTE, cine-MRI planimetry and a hybrid approach: Hybrid Method 1: TTE-derived LVOT measurement in the CE numerator was replaced by the MRI assessment of the LVOT and AVA was calculated: (LVOT MRI/*LVOT-VTI TTE)/transaortic-VTI TTE. Method 2: We replaced the SV in the numerator by the MRI-derived SV and calculated AVA = SV MRI/ transaortic-VTI TTE. RESULTS: Mean AVA derived by TTE was 0.86 cm²±0.23 cm² and 0.83 cm²±0.3 cm² by MRI- planimetry, respectively. The mean absolute difference in AVA was 0.03cm² for TTE vs. MRI planimetry. AVA calculated with method 1 and method 2 was 1.23 cm²±0.4cm² and 0.92cm²±0.32cm², respectively. The mean absolute difference between TTE and method 1 and method 2 was 0.37cm² and 0.06cm², respectively (p<0.001). CONCLUSION: MRI-planimetry of AVA and hybrid method 2 are accurate and showed a good agreement with standard TTE measurements. Therefore, hybrid method 1 is a reasonable alternative if poor acoustic windows or LVOT flow accelerations limit the accuracy of TTE, particularly in patients at high risk for an invasive hemodynamic study.


FUNDAMENTO: La ecocardiografía transtorácica (ETT) es habitualmente utilizada para calcular el área de la válvula aórtica (AVA) por la ecuación de continuidad (EC). Mientras tanto, la medida exacta de las vías de salida del ventrículo izquierdo (VSVI) puede ser difícil y la aceleración del flujo en el VSVI puede llevar a error de cálculo del AVA. OBJETIVO: El objetivo del nuestro estudio fue comparar las mediciones del AVA por ETT estándar, resonancia magnética cardíaca (RM) y un abordaje híbrido que combina las dos técnicas. MÉTODOS: AEI AVA fue calculada en 38 pacientes (edad 73 ± 9 años) con la ETT estándar, planimetría cine-RM y un abordaje híbrido: Método híbrido 1: la medición de la VSVI derivada por el ETT en el numerador CE fue substituida por la evaluación de resonancia magnética de la VSVI y el AVA fue calculada: (VSVI RM/*VSVI-VTI ETT)/transaórtico-VTI ETT; Método 2: Substituimos el VS en el numerador por el VS derivado por la RM y calculamos el AVA = VS RM/transaórtico-VTI ETT. RESULTADOS: La media de AVA obtenida por la ETT fue 0,86 cm² ± 0,23 cm2 y 0,83 cm² ± 0,3 cm² por la RM-planimetría, respectivamente. La diferencia media absoluta del AVA fue de 0,03 cm² para la RM versus planimetría-resonancia magnética. El AVA calculada con el método 1 y el método 2 fue de 1,23 cm² ± 0,4 cm² y 0,92cm² ± 0,32 cm², respectivamente. La diferencia media absoluta entre la ETT y los métodos 1 y 2 fue de 0,37 cm² y 0,06 cm², respectivamente (p < 0,001). CONCLUSION: La RM-planimetría del AVA y el método híbrido 2 son precisos y demostraron buena consistencia con las mediciones estándar obtenidas por la ETT. Por lo tanto, el método híbrido 2 es una alternativa razonable en la eventualidad de ventanas acústicas malas o en caso de aceleraciones de flujo VSVI que limiten la precisión de la ETT, particularmente en pacientes con alto riesgo de un estudio hemodinámico invasivo.


الموضوعات
Aged , Female , Humans , Male , Aortic Valve Stenosis/diagnosis , Echocardiography, Doppler/methods , Magnetic Resonance Imaging, Cine/methods , Analysis of Variance , Aortic Valve Stenosis/pathology , Aortic Valve/pathology , Aortic Valve , Blood Flow Velocity/physiology , Blood Pressure/physiology , Image Interpretation, Computer-Assisted/methods , Image Interpretation, Computer-Assisted/standards , Statistics, Nonparametric
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