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1.
Int Heart J ; 62(5): 1019-1025, 2021 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-34544972

RESUMO

The aortic regurgitation (AR) index, proposed as an objective indicator of postprocedural AR, decreases in proportion to AR severity, besides reportedly providing additional prognostic information. Meanwhile, left ventricular (LV) function has also been considered an essential prognostic factor. This study aimed to clarify whether LV function affected the AR index using cardiac catheterization data.A retrospective study was performed in patients whose LV function was evaluated using a micromanometer-tipped catheter. Patients with grade 2 or higher AR were excluded to explore non-AR factors affecting the AR index value. The AR index was calculated as a ratio of the gradient between the aortic diastolic blood pressure (DBP) and the LV end-diastolic pressure (EDP) to the aortic systolic blood pressure (SBP): AR Index = [ (DBP - LVEDP) / SBP] × 100.A total of 64 patients [age, 62 (interquartile range: 48-70) years; LV ejection fraction, 19% (16%-26%) ] were examined. AR index values ranged from 18.3 to 68.6. Despite having no AR, two patients displayed an AR index < 25, indicating significant AR. Multiple-regression analysis revealed that LV diastolic stiffness (ß = -0.750, P < 0.001), LV max dP/dt (ß = -0.296, P = 0.006), and heart rate (ß = 0.284, P = 0.011) were independent determinants of the AR index value.Patients with impaired LV diastolic function and preserved systolic function had low AR index values. The additional prognostic information of the AR index may be related to LV diastolic function.


Assuntos
Insuficiência da Valva Aórtica/fisiopatologia , Hemodinâmica/fisiologia , Disfunção Ventricular Esquerda/fisiopatologia , Função Ventricular Esquerda/fisiologia , Idoso , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/cirurgia , Pressão Sanguínea/fisiologia , Cateterismo Cardíaco/métodos , Ecocardiografia/métodos , Feminino , Frequência Cardíaca/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Prognóstico , Estudos Retrospectivos , Índice de Gravidade de Doença , Volume Sistólico/fisiologia , Disfunção Ventricular Esquerda/diagnóstico por imagem
2.
Int J Cardiovasc Imaging ; 34(8): 1295-1303, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29564585

RESUMO

In patients with aortic regurgitation (AR), a precise preoperative assessment of aortic valve (AV) pathology is important if AV repair or sparing operation is an alternative option. The aim of this study was to assess the diagnostic accuracy of computed tomography (CT) for evaluating the AR mechanism compared with surgical inspection. 59 patients with AR who underwent AV surgery and preoperative cardiac CT were evaluated. AR mechanism was classified into type 1 (aortic dilatation or cusp perforation), type 2 (prolapsed cusp) and type 3 (cusp retraction). Agreement between CT and surgical inspection was obtained. Correlation between aortic regurgitant orifice (ARO) and imaging parameters were evaluated. On surgical inspection, type 1 AR was noted in 22 patients, type 2 in 16 and type 3 in 21. Agreement regarding the AR mechanism on CT was excellent (intra-class correlation coefficient, 0.81). At the patient level, the Cohen's κ value for CT findings with surgical inspection was of 0.89. At the cusp level, moderate agreement was noted between CT and surgical inspection. In the per-cusp analysis, CT had a sensitivity of 72.6%, specificity of 85.1%, positive predictive value of 73.8% and negative predictive value of 84.3% for the detection of aortic cusp abnormality. The diameter, perimeter and area of aortic annulus had moderate correlation with ARO (r = 0.54-0.66, P < 0.001). CT-derived classification of AR mechanism showed excellent agreement with surgical inspection.


Assuntos
Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico por imagem , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Exame Físico , Tomografia Computadorizada por Raios X , Adulto , Idoso , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/cirurgia , Técnicas de Imagem Cardíaca , Ecocardiografia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Variações Dependentes do Observador , Valor Preditivo dos Testes , Cuidados Pré-Operatórios , Estudos Retrospectivos
3.
J Cardiothorac Vasc Anesth ; 32(1): 586-597, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28927697

RESUMO

The functional aortic annulus offers a clinical approach for the perioperative echocardiographer to classify the mechanisms of aortic regurgitation in acute type-A dissection. Comprehensive examination of the functional aortic annulus in this setting using transesophageal echocardiography can guide surgical therapy for the aortic root by considering the following important aspects: severity and mechanism of aortic regurgitation, extent of root dissection, and the pattern of coronary artery involvement. The final choice of surgical therapy also should take into account factors, such as patient presentation and surgical experience, to limit mortality and morbidity from this challenging acute aortic syndrome. This review explores these concepts in detail within the framework of the functional aortic annulus, detailed anatomic considerations, and the latest literature.


Assuntos
Aorta/diagnóstico por imagem , Dissecção Aórtica/complicações , Insuficiência da Valva Aórtica/classificação , Doença Aguda , Dissecção Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/etiologia , Ecocardiografia , Humanos
4.
FP Essent ; 457: 11-16, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28671804

RESUMO

The prevalence of valvular heart disease (VHD) in the United States was estimated to be approximately 2.5% in the 1990s. The prevalence currently is thought to be increasing because of more accurate diagnostic methods and aging of the population. Mitral regurgitation (MR) is the most common valve defect, followed by aortic stenosis (AS) and aortic regurgitation (AR). Degenerative disease is the most common etiology of MR, AS, and AR, though these forms of VHD also can be caused by congenital valve defects, systemic inflammatory diseases, endocarditis, and many other conditions. Mitral stenosis, most often caused by rheumatic fever, is uncommon in the United States. When VHD is suspected, transthoracic echocardiography should be obtained first. Other tests, including transesophageal echocardiography, computed tomography scan, magnetic resonance imaging study, and cardiac catheterization, are used in special situations to obtain more detailed diagnostic information. Guidelines for VHD management recommend interval monitoring with echocardiography. The exact interval recommended depends on the severity of the valve dysfunction and whether the patient is symptomatic. Monitoring of asymptomatic patients is important because early intervention, when valve function worsens or symptoms develop, is associated with better outcomes.


Assuntos
Doenças das Valvas Cardíacas/diagnóstico , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/epidemiologia , Insuficiência da Valva Aórtica/etiologia , Estenose da Valva Aórtica/classificação , Estenose da Valva Aórtica/diagnóstico , Estenose da Valva Aórtica/epidemiologia , Estenose da Valva Aórtica/etiologia , Cateterismo Cardíaco , Intervenção Médica Precoce , Ecocardiografia , Ecocardiografia Transesofagiana , Teste de Esforço , Doenças das Valvas Cardíacas/classificação , Doenças das Valvas Cardíacas/epidemiologia , Doenças das Valvas Cardíacas/etiologia , Humanos , Imageamento por Ressonância Magnética , Insuficiência da Valva Mitral/classificação , Insuficiência da Valva Mitral/diagnóstico , Insuficiência da Valva Mitral/epidemiologia , Insuficiência da Valva Mitral/etiologia , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Estados Unidos
5.
J. pediatr. (Rio J.) ; 92(6): 581-587, Nov.-Dec. 2016. tab
Artigo em Inglês | LILACS | ID: biblio-829128

RESUMO

Abstract Objective: The aim of this study is to define the predictors of chronic carditis in patients with acute rheumatic carditis (ARC). Methods: Patients diagnosed with ARC between May 2010 and May 2011 were included in the study. Echocardiography, electrocardiography, lymphocyte subset analysis, acute phase reactants, plasma albumin levels, and antistreptolysin-O (ASO) tests were performed at initial presentation. The echocardiographic assessments were repeated at the sixth month of follow-up. The patients were divided into two groups according to persistence of valvular pathology at 6th month as Group 1 and Group 2, and all clinical and laboratory parameters at admission were compared between two groups of valvular involvement. Results: During the one-year study period, 22 patients had valvular disease. Seventeen (77.2%) patients showed regression in valvular pathology. An initial mild regurgitation disappeared in eight patients (36.3%). Among seven (31.8%) patients with moderate regurgitation initially, the regurgitation disappeared in three, and four patients improved to mild regurgitation. Two patients with a severe regurgitation initially improved to moderate regurgitation (9.1%). In five (22.8%) patients, the grade of regurgitation [moderate regurgitation in one (4.6%), and severe regurgitation in 4 (18.2%)] remained unchanged. The albumin level was significantly lower at diagnosis in Group 2 (2.6 ± 0.48 g/dL). Lymphocyte subset analysis showed a significant decrease in the CD8 percentage and a significant increase in CD19 percentage at diagnosis in Group 2 compared to Group 1. Conclusion: The blood albumin level and the percentage of CD8 and CD19 (+) lymphocytes at diagnosis may help to predict chronic valvular disease risk in patients with acute rheumatic carditis.


Resumo Objetivo: Definir os preditores da cardite crônica em pacientes com cardite reumática aguda (CRA). Métodos: Os pacientes diagnosticados com CRA entre maio de 2010 e maio de 2011 foram incluídos no estudo. Foram feitos os testes de ecocardiografia, eletrocardiograma, uma análise do subgrupo de linfócitos, provas de fase aguda, níveis de albumina plasmática, antiestreptolisina-O (ASO) na manifestação inicial. As avaliações ecocardiográficas foram repetidas no 6º mês de acompanhamento. Os pacientes foram divididos em dois grupos de acordo com a persistência da patologia valvular no 6º mês como Grupo 1 e Grupo 2 e todos os parâmetros clínicos e laboratoriais na internação foram comparados entre dois grupos de comprometimento valvular. Resultados: Durante o período do estudo de um ano, 22 pacientes apresentaram doença valvular; 17 (77,2%) apresentaram regressão da patologia valvular. Houve desaparecimento de regurgitação moderada inicial em oito pacientes (36,3%). Entre sete (31,8%) pacientes com regurgitação moderada inicialmente, a regurgitação desapareceu em três e quatro apresentaram melhoria para regurgitação leve. Dois pacientes com regurgitação grave inicialmente apresentaram melhoria para regurgitação moderada (9,1%). Em cinco (22,8%) pacientes o grau de regurgitação (regurgitação moderada em um [4,6%] e regurgitação grave em quatro [18,2]) continuou inalterado. O nível de albumina foi significativamente menor no diagnóstico no Grupo 2 (2,6 ± 0,48 gr/dL). A análise do subgrupo de linfócitos mostrou uma redução significativa no percentual de CD8 e um aumento significativo no percentual de CD19 no Grupo 2 em comparação com o Grupo 1. Conclusão: O nível de albumina no sangue e o percentual de linfócitos CD8 e CD19 (+) no diagnóstico podem ajudar a prever risco de doença valvular crônica em pacientes com cardite reumática aguda.


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Insuficiência da Valva Aórtica/diagnóstico , Cardiopatia Reumática/diagnóstico , Albumina Sérica/análise , Antígenos CD19/imunologia , Insuficiência da Valva Mitral/diagnóstico , Miocardite/diagnóstico , Insuficiência da Valva Aórtica/classificação , Cardiopatia Reumática/sangue , Ecocardiografia Doppler , Doença Aguda , Valor Preditivo dos Testes , Estudos Retrospectivos , Seguimentos , Linfócitos T CD8-Positivos/imunologia , Eletrocardiografia , Insuficiência da Valva Mitral/classificação , Miocardite/sangue , Antiestreptolisina/sangue
6.
Curr Opin Cardiol ; 31(6): 581-584, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27583375

RESUMO

PURPOSE OF REVIEW: Recently, there has been a renewed interest with regard to surgical strategies for aortic valve preservation in the presence of isolated valve disease or concomitant aortic root disease, despite concerns having been raised about the mid/long-term durability of such repair techniques for the aortic valve. The aim of the present review is to analyze the currently available evidence about aortic valve repair strategies, for either bicuspid or tricuspid valves. RECENT FINDINGS: An improved understanding of the surgical anatomy and functional analysis of the aortic valve and root has allowed a systematic classification for the mechanisms of aortic valve insufficiency. Similarly, the use of dedicated instruments and devices has led to improved outcomes in terms of not only long-term survival but also freedom from reoperation. SUMMARY: Aortic valve repair, either as a stand-alone procedure or especially in combination with surgery of the root, is a well-tolerated and effective procedure with excellent outcomes at mid/long term. Recent efforts allowed the refinement of surgical techniques to develop a systematic approach to aortic valve repair, which implies a thorough understanding of the surgical anatomy, the functional causes of disease, and the available repair techniques along with their potential limitations. A specialized team including dedicated surgeons and cardiologists appears to be crucial to achieve durable and satisfactory outcomes following aortic valve repair.


Assuntos
Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos/métodos , Humanos , Reoperação , Técnicas de Sutura , Resultado do Tratamento
7.
J Pediatr (Rio J) ; 92(6): 581-587, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27553592

RESUMO

OBJECTIVE: The aim of this study is to define the predictors of chronic carditis in patients with acute rheumatic carditis (ARC). METHODS: Patients diagnosed with ARC between May 2010 and May 2011 were included in the study. Echocardiography, electrocardiography, lymphocyte subset analysis, acute phase reactants, plasma albumin levels, and antistreptolysin-O (ASO) tests were performed at initial presentation. The echocardiographic assessments were repeated at the sixth month of follow-up. The patients were divided into two groups according to persistence of valvular pathology at 6th month as Group 1 and Group 2, and all clinical and laboratory parameters at admission were compared between two groups of valvular involvement. RESULTS: During the one-year study period, 22 patients had valvular disease. Seventeen (77.2%) patients showed regression in valvular pathology. An initial mild regurgitation disappeared in eight patients (36.3%). Among seven (31.8%) patients with moderate regurgitation initially, the regurgitation disappeared in three, and four patients improved to mild regurgitation. Two patients with a severe regurgitation initially improved to moderate regurgitation (9.1%). In five (22.8%) patients, the grade of regurgitation [moderate regurgitation in one (4.6%), and severe regurgitation in 4 (18.2%)] remained unchanged. The albumin level was significantly lower at diagnosis in Group 2 (2.6±0.48g/dL). Lymphocyte subset analysis showed a significant decrease in the CD8 percentage and a significant increase in CD19 percentage at diagnosis in Group 2 compared to Group 1. CONCLUSION: The blood albumin level and the percentage of CD8 and CD19 (+) lymphocytes at diagnosis may help to predict chronic valvular disease risk in patients with acute rheumatic carditis.


Assuntos
Antígenos CD19/imunologia , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Mitral/diagnóstico , Miocardite/diagnóstico , Cardiopatia Reumática/diagnóstico , Albumina Sérica/análise , Doença Aguda , Adolescente , Antiestreptolisina/sangue , Insuficiência da Valva Aórtica/classificação , Linfócitos T CD8-Positivos/imunologia , Criança , Ecocardiografia Doppler , Eletrocardiografia , Feminino , Seguimentos , Humanos , Masculino , Insuficiência da Valva Mitral/classificação , Miocardite/sangue , Valor Preditivo dos Testes , Estudos Retrospectivos , Cardiopatia Reumática/sangue
8.
Interact Cardiovasc Thorac Surg ; 21(1): 71-6, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25840434

RESUMO

OBJECTIVES: The emerging new treatment options for aortic valve disease call for more sophisticated diagnostics. We aimed to describe the echocardiographic pathophysiology and characteristics of the purely regurgitant aortic valve in detail. METHODS: Twenty-nine men, with chronic aortic regurgitation without concomitant heart disease referred for aortic valve intervention, underwent 2D transoesophageal echocardiographic (TEE) examination prior to surgery according to a previously published matrix. Measurements of the aortic valve apparatus in long and short axis view were made in systole and diastole and analysed off-line. The aortic valves were grouped as tricuspid (TAV) or bicuspid (BAV), and classified by regurgitation mechanism. RESULTS: Twenty-four examinations were eligible for analysis of which 13 presented TAV and 11 BAV. The regurgitation mechanism was classified as dilatation of the aorta in 6 cases, as prolapse in 11 cases and as poor cusp tissue quality or quantity in 7 cases. The ventriculo-aortic junction (VAJ) and valve opening were closely related (TAV r = 0.5, BAV r = 0.73) but no correlation was found between the VAJ and the maximal sinus diameter (maxSiD) or the sinotubular junction (STJ). However, the STJ and maxSiD were significantly related (TAV vs BAV: systole r = 0.9, r = 0.8; diastole r = 0.9, r = 0.7), forming an entity. The conjoined BAV cusps were shorter than the anterior cusps when closed (P = 0.002); the inter-commissural distances of the cusps in the BAV group were significantly different (P = 0.001 resp. 0.03) in both systole and diastole. CONCLUSIONS: The VAJ was independent of other aortic dimensions and should thereby be considered as a separate entity with influence on valve opening. The detailed 2D TEE measurements of this study add further important information to our knowledge about the function and echocardiographic anatomy of the pathological aortic valve and root either as a stand-alone examination or as a benchmark and complement to 3D echocardiography. This may have an impact on decisions regarding repairability of the native aortic valve.


Assuntos
Insuficiência da Valva Aórtica/diagnóstico por imagem , Valva Aórtica/anormalidades , Ecocardiografia Transesofagiana , Doenças das Valvas Cardíacas/diagnóstico por imagem , Adulto , Idoso , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/fisiopatologia , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/fisiopatologia , Doença da Válvula Aórtica Bicúspide , Doenças das Valvas Cardíacas/classificação , Doenças das Valvas Cardíacas/fisiopatologia , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico
9.
Interact Cardiovasc Thorac Surg ; 21(1): 77-80, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25842078

RESUMO

OBJECTIVES: Wider adoption of aortic valve repair procedures is held up by the difficulty in recognizing the exact alterations that are responsible for aortic valve insufficiency. New aortic cusp sizers were developed to assist in aortic valve assessment in the operating theatre. Our objectives were to examine the efficacy of the aortic cusp sizers in establishing the functional classification of aortic valve insufficiency, and to report the midterm outcome in a group of patients who had undergone aortic valve repair guided by this device. METHODS: A prospective clinical study was performed involving 33 consecutive patients (18 males, age range: 8-74 years) with severe aortic valve insufficiency (mean severity: 3.4 ± 0.5). The aortic cusp sizers were used as a template to identify existing cusp and root alterations. Consequently, the functional classification of aortic insufficiency was determined, and the appropriate techniques of aortic valve repair were implemented. RESULTS: Aortic valve repair was successful in all patients. Procedures performed were 37 functional aortic annulus corrections, 9 cusp free-edge plications, 2 cusp repairs with autologous pericardium, 9 replacements of the ascending aorta and 2 reimplantation procedures. At a mean follow-up time of 18.3 ± 13.7 months, 1 patient underwent aortic valve replacement for recurrent aortic valve regurgitation, while aortic valve function remained stable in 32 patients, with aortic insufficiency <1+ in 27 (84.4%) patients and 1-1.5 in 5 (15.6%) patients, and no significant gradients across the aortic valves. CONCLUSIONS: The aortic cusp sizers are valuable in establishing the functional classification of aortic insufficiency, and can guide implementation of aortic valve repair techniques successfully. This approach is analogous to that accredited for the success and wide adoption of mitral valve repair techniques, and is likely to assist in increasing the percentage of aortic valves that are repaired when compared with current practice.


Assuntos
Algoritmos , Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos/instrumentação , Equipamentos Cirúrgicos , Adolescente , Adulto , Idoso , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/fisiopatologia , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/fisiopatologia , Criança , Procedimentos Clínicos , Desenho de Equipamento , Feminino , Implante de Prótese de Valva Cardíaca , Humanos , Cuidados Intraoperatórios , Masculino , Pessoa de Meia-Idade , Seleção de Pacientes , Pericárdio/transplante , Valor Preditivo dos Testes , Estudos Prospectivos , Recidiva , Reoperação , Reimplante , Síria , Fatores de Tempo , Resultado do Tratamento , Ultrassonografia , Adulto Jovem
10.
Gen Thorac Cardiovasc Surg ; 60(11): 735-43, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23011521

RESUMO

The timing of operation for severe chronic and asymptomatic aortic regurgitation remains problematic, though the present trend is to prefer early surgery. In this article, we review recent reports, mainly published after 2006, regarding indications for surgical treatment for pure chronic AR.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/mortalidade , Doença Crônica , Insuficiência Cardíaca/complicações , Humanos , Prognóstico , Índice de Gravidade de Doença , Fatores de Tempo , Função Ventricular Esquerda
12.
N Engl J Med ; 366(18): 1686-95, 2012 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-22443479

RESUMO

BACKGROUND: The Placement of Aortic Transcatheter Valves (PARTNER) trial showed that among high-risk patients with aortic stenosis, the 1-year survival rates are similar with transcatheter aortic-valve replacement (TAVR) and surgical replacement. However, longer-term follow-up is necessary to determine whether TAVR has prolonged benefits. METHODS: At 25 centers, we randomly assigned 699 high-risk patients with severe aortic stenosis to undergo either surgical aortic-valve replacement or TAVR. All patients were followed for at least 2 years, with assessment of clinical outcomes and echocardiographic evaluation. RESULTS: The rates of death from any cause were similar in the TAVR and surgery groups (hazard ratio with TAVR, 0.90; 95% confidence interval [CI], 0.71 to 1.15; P=0.41) and at 2 years (Kaplan-Meier analysis) were 33.9% in the TAVR group and 35.0% in the surgery group (P=0.78). The frequency of all strokes during follow-up did not differ significantly between the two groups (hazard ratio, 1.22; 95% CI, 0.67 to 2.23; P=0.52). At 30 days, strokes were more frequent with TAVR than with surgical replacement (4.6% vs. 2.4%, P=0.12); subsequently, there were 8 additional strokes in the TAVR group and 12 in the surgery group. Improvement in valve areas was similar with TAVR and surgical replacement and was maintained for 2 years. Paravalvular regurgitation was more frequent after TAVR (P<0.001), and even mild paravalvular regurgitation was associated with increased late mortality (P<0.001). CONCLUSIONS: A 2-year follow-up of patients in the PARTNER trial supports TAVR as an alternative to surgery in high-risk patients. The two treatments were similar with respect to mortality, reduction in symptoms, and improved valve hemodynamics, but paravalvular regurgitation was more frequent after TAVR and was associated with increased late mortality. (Funded by Edwards Lifesciences; ClinicalTrials.gov number, NCT00530894.).


Assuntos
Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Cateterismo Cardíaco , Implante de Prótese de Valva Cardíaca/métodos , Anticoagulantes/efeitos adversos , Anticoagulantes/uso terapêutico , Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/etiologia , Estenose da Valva Aórtica/complicações , Estenose da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/terapia , Cateterismo Cardíaco/efeitos adversos , Feminino , Seguimentos , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/efeitos adversos , Hemorragia/etiologia , Heparina/efeitos adversos , Heparina/uso terapêutico , Humanos , Estimativa de Kaplan-Meier , Masculino , Inibidores da Agregação Plaquetária/efeitos adversos , Inibidores da Agregação Plaquetária/uso terapêutico , Complicações Pós-Operatórias , Falha de Prótese , Acidente Vascular Cerebral/etiologia , Taxa de Sobrevida , Resultado do Tratamento , Ultrassonografia
13.
Am J Cardiol ; 108(10): 1470-7, 2011 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-21855831

RESUMO

Location of aortic valve calcium (AVC) can be better visualized on contrast-enhanced multidetector row computed tomography. The present evaluation examined whether AVC severity and its location could influence paravalvular aortic regurgitation (AR) after transcatheter aortic valve implantation. A total of 79 patients (age 80 ± 7 years, 49% men) with preprocedural multidetector row computed tomography were included. Volumetric AVC quantification and its location were assessed. Transesophageal echocardiography was performed to assess the presence and site of AR after transcatheter aortic valve implantation. Receiver operating characteristic curves were generated to evaluate the usefulness of AVC in determining paravalvular AR at a specific site. Postprocedural AR of grade 1 or more was observed in 63 patients. In most patients (n = 56, 71%), AR was of paravalvular origin. Calcium at the aortic wall of each valve cusp had the largest area under the curve (0.93, p <0.001) in predicting paravalvular AR at the aortic wall site compared to calcium at the valvular edge or body (area under the curve 0.58 and 0.67, respectively). Calcium at the valvular commissure was better than calcium at the valvular edge (area under the curve 0.94 vs 0.71) in predicting paravavular AR originating from the corresponding commissure. In conclusion, contrast-enhanced multidetector row computed tomography can be performed to quantify AVC. Both AVC severity and its exact location are important in determining paravalvular AR after transcatheter aortic valve implantation.


Assuntos
Insuficiência da Valva Aórtica/diagnóstico por imagem , Valva Aórtica/diagnóstico por imagem , Implante de Prótese de Valva Cardíaca/efeitos adversos , Índice de Gravidade de Doença , Calcificação Vascular/diagnóstico por imagem , Idoso de 80 Anos ou mais , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/etiologia , Estenose da Valva Aórtica/cirurgia , Meios de Contraste , Ecocardiografia Transesofagiana , Feminino , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/métodos , Humanos , Masculino , Tomografia Computadorizada Multidetectores , Cuidados Pré-Operatórios , Estudos Prospectivos , Curva ROC , Estudos Retrospectivos , Ultrassonografia Doppler em Cores , Ultrassonografia Doppler de Pulso
14.
J Cardiothorac Vasc Anesth ; 24(6): 1016-20, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20952208

RESUMO

The surgical classification of aortic regurgitation (AR) is based on cusp mobility. Based on this classification, there are 3 classes of AR: type I is defined as normal cusp mobility, type II is defined as excessive cusp mobility, and type III is defined as restricted cusp mobility. Patients often have multiple coexisting mechanisms. Because aortic valve (AV) repair is safe, effective, and durable, it likely will become a mainstream surgical option for the management of significant AR, even in the setting of a bicuspid valve. Intraoperative transesophageal echocardiography has a central role at all stages in AV repair. Before cardiopulmonary bypass, it can accurately diagnose the mechanism of AR to guide operative strategy for successful repair. After separation from cardiopulmonary bypass, it can comprehensively evaluate the AV repair, including the likelihood that the repair will be durable in the long-term. Important echocardiographic predictors of a durable AV repair include the absence of AR, cusp coaptation above the annular plane, a coaptation length >4 mm, and an effective cusp height >8 mm. The clinical applicability of AV repair continues to expand and likely will evolve into a mainstream surgical therapy for AR, including minimally invasive techniques.


Assuntos
Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/cirurgia , Ecocardiografia Transesofagiana , Humanos , Monitorização Intraoperatória , Valor Preditivo dos Testes , Falha de Tratamento , Resultado do Tratamento
15.
Expert Rev Cardiovasc Ther ; 8(7): 933-40, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20602554

RESUMO

Ascending aortic aneurysms involving the aortic root are usually treated with replacement of the ascending aorta and the aortic valve using a composite valved conduit. However, the aortic valve is usually normal and the dysfunction is due to an impairment of the other components of the aortic root. In these cases, the aortic root can be replaced, sparing the native aortic valve. Aortic valve-sparing operations have been demonstrated to be effective and durable. This article summarizes the principal methods of valve-sparing procedures, and describes the advantages and disadvantages of each method, and their impact on patient outcomes.


Assuntos
Aorta/cirurgia , Aneurisma Aórtico/cirurgia , Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica , Implante de Prótese de Valva Cardíaca , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/classificação , Implante de Prótese Vascular , Implante de Prótese de Valva Cardíaca/métodos , Humanos , Recidiva , Reimplante
16.
Anesth Analg ; 111(1): 59-70, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20522704

RESUMO

For patients with aortic valve (AV) disease, the classic treatment has been AV replacement and this remains true for aortic stenosis. In contrast, repair of isolated aortic insufficiency (AI), with or without aortic root pathology, is emerging as a feasible and attractive option to replacement. The AV is one of the elements of the aortic root. As such, AI can develop if one or more elements of the aortic root are diseased. Intraoperative transesophageal echocardiographic evaluation permits analysis of the mechanisms of aortic regurgitation as well as differentiation between repairable and unrepairable AV pathology. Immediate postrepair transesophageal echocardiography provides important information about the quality and durability of repair and identifies variables associated with recurrent AI.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos/métodos , Ecocardiografia Transesofagiana/métodos , Aneurisma Aórtico/complicações , Aneurisma Aórtico/diagnóstico , Aneurisma Aórtico/cirurgia , Valva Aórtica/anormalidades , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico , Prolapso da Valva Aórtica/diagnóstico por imagem , Prolapso da Valva Aórtica/cirurgia , Humanos , Valva Mitral/diagnóstico por imagem , Valva Mitral/patologia , Monitorização Intraoperatória , Período Pós-Operatório
17.
Eur J Echocardiogr ; 11(3): 223-44, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20375260

RESUMO

Valvular regurgitation represents an important cause of cardiovascular morbidity and mortality. Echocardiography has become the primary non-invasive imaging method for the evaluation of valvular regurgitation. The echocardiographic assessment of valvular regurgitation should integrate quantification of the regurgitation, assessment of the valve anatomy, and function as well as the consequences of valvular disease on cardiac chambers. In clinical practice, the management of patients with valvular regurgitation thus largely integrates the results of echocardiography. It is crucial to provide standards that aim at establishing a baseline list of measurements to be performed when assessing regurgitation.


Assuntos
Insuficiência da Valva Aórtica/diagnóstico por imagem , Fluxometria por Laser-Doppler/métodos , Insuficiência da Valva Pulmonar/diagnóstico por imagem , Sociedades Médicas/normas , Obstrução do Fluxo Ventricular Externo/diagnóstico por imagem , Algoritmos , Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/fisiopatologia , Ecocardiografia Doppler/métodos , Ecocardiografia Tridimensional/métodos , Ecocardiografia Transesofagiana/métodos , Europa (Continente) , Teste de Esforço , Humanos , Obstrução do Fluxo Ventricular Externo/fisiopatologia
18.
J Thorac Cardiovasc Surg ; 137(2): 286-94, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19185138

RESUMO

OBJECTIVE: Valve repair for aortic insufficiency requires a tailored surgical approach determined by the leaflet and aortic disease. Over the past decade, we have developed a functional classification of AI, which guides repair strategy and can predict outcome. In this study, we analyze our experience with a systematic approach to aortic valve repair. METHODS: From 1996 to 2007, 264 patients underwent elective aortic valve repair for aortic insufficiency (mean age - 54 +/- 16 years; 79% male). AV was tricuspid in 171 patients bicuspid in 90 and quadricuspid in 3. One hundred fifty three patients had type I dysfunction (aortic dilatation), 134 had type II (cusp prolapse), and 40 had type III (restrictive). Thirty six percent (96/264) of the patients had more than one identified mechanism. RESULTS: In-hospital mortality was 1.1% (3/264). Six patients experienced early repair failure; 3 underwent re-repair. Functional classification predicted the necessary repair techniques in 82-100% of patients, with adjunctive techniques being employed in up to 35% of patients. Mid-term follow up (median [interquartile range]: 47 [29-73] months) revealed a late mortality rate of 4.2% (11/261, 10 cardiac). Five year overall survival was 95 +/- 3%. Ten patients underwent aortic valve reoperation (1 re-repair). Freedoms from recurrent Al (>2+) and from AV reoperation at 5 years was 88 +/- 3% and 92 +/- 4% respectively and patients with type I (82 +/- 9%; 93 +/- 5%) or II (95 +/- 5%; 94 +/- 6%) had better outcomes compared to type III (76 +/- 17%; 84 +/- 13%). CONCLUSION: Aortic valve repair is an acceptable therapeutic option for patients with aortic insufficiency. This functional classification allows a systematic approach to the repair of Al and can help to predict the surgical techniques required as well as the durability of repair. Restrictive cusp motion (type III), due to fibrosis or calcification, is an important predictor for recurrent Al following AV repair.


Assuntos
Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Insuficiência da Valva Aórtica/mortalidade , Criança , Feminino , Mortalidade Hospitalar , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva , Reoperação , Técnicas de Sutura , Resultado do Tratamento , Adulto Jovem
19.
Eur J Cardiothorac Surg ; 33(5): 872-8; discussion 878-80, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18258445

RESUMO

OBJECTIVE: Aortic valve repair is an alternative to valve replacement for treatment of chronic aortic insufficiency (AI). In order to standardize surgical management, we suggest a classification based on echocardiographic and operative analysis of valvular lesions. METHODS: Classification was based on the retrospective analysis of chronic AI mechanisms of 781 adults operated on electively between 1997 and 2003. RESULTS: AI was isolated (406 patients (52%)), associated with supra-coronary aneurysm (97 cases (12.4%)), or with aortic root aneurysm (278 patients (35.6%)). Etiologies of valvular or aortic lesions were respectively rheumatic, dystrophic and atheromatous in 17%, 73.6% and 9.4% of cases. Lesional classification is based on the analysis of chronic AI mechanisms defining type I with central jet (354 cases, 45.3%) and type II with eccentric jet (54.7%). Type Ia is defined as isolated dilation of sino-tubular junction (47 supra-coronary aneurysms), and type Ib as dilation of both sino-tubular junction and aortic annular base (233 root aneurysms, 74 isolated AI). The type II associates dilation of sino-tubular junction and annular base to a valvular lesion: IIa cusp prolapse (95 aneurysms, 200 isolated AI); IIb cusp retraction (132 rheumatic AI), IIc cusp tear (endocarditis, traumatic). CONCLUSION: A lesional classification aims to standardize the surgical management of aortic valve repair: type Ia, by supra-coronary graft; type Ib, by subvalvular aortic annuloplasty associated with the aortic root replacement with a remodelling technique (root aneurysm) or double sub- and supravalvular annuloplasty (isolated AI). For chronic AI type II, aortic annuloplasty associated a remodelling technique or double sub- and supravalvular annuloplasty is combined with the treatment of the cusp lesion (cusp resuspension, cusp reconstruction with autologous pericardium).


Assuntos
Insuficiência da Valva Aórtica/classificação , Insuficiência da Valva Aórtica/diagnóstico por imagem , Valva Aórtica/diagnóstico por imagem , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/cirurgia , Bioprótese , Cateterismo , Ecocardiografia Transesofagiana , Feminino , Implante de Prótese de Valva Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
20.
Circulation ; 114(5): e84-231, 2006 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-16880336
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