Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 67
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Eur Heart J ; 35(38): 2672-84, 2014 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-24682842

RESUMO

AIM: Transcatheter aortic valve implantation has become an alternative to surgery in higher risk patients with symptomatic aortic stenosis. The aim of the ADVANCE study was to evaluate outcomes following implantation of a self-expanding transcatheter aortic valve system in a fully monitored, multi-centre 'real-world' patient population in highly experienced centres. METHODS AND RESULTS: Patients with severe aortic stenosis at a higher surgical risk in whom implantation of the CoreValve System was decided by the Heart Team were included. Endpoints were a composite of major adverse cardiovascular and cerebrovascular events (MACCE; all-cause mortality, myocardial infarction, stroke, or reintervention) and mortality at 30 days and 1 year. Endpoint-related events were independently adjudicated based on Valve Academic Research Consortium definitions. A total of 1015 patients [mean logistic EuroSCORE 19.4 ± 12.3% [median (Q1,Q3), 16.0% (10.3, 25.3%)], age 81 ± 6 years] were enrolled. Implantation of the CoreValve System led to a significant improvement in haemodynamics and an increase in the effective aortic valve orifice area. At 30 days, the MACCE rate was 8.0% (95% CI: 6.3-9.7%), all-cause mortality was 4.5% (3.2-5.8%), cardiovascular mortality was 3.4% (2.3-4.6%), and the rate of stroke was 3.0% (2.0-4.1%). The life-threatening or disabling bleeding rate was 4.0% (2.8-6.3%). The 12-month rates of MACCE, all-cause mortality, cardiovascular mortality, and stroke were 21.2% (18.4-24.1%), 17.9% (15.2-20.5%), 11.7% (9.4-14.1%), and 4.5% (2.9-6.1%), respectively. The 12-month rates of all-cause mortality were 11.1, 16.5, and 23.6% among patients with a logistic EuroSCORE ≤10%, EuroSCORE 10-20%, and EuroSCORE >20% (P< 0.05), respectively. CONCLUSION: The ADVANCE study demonstrates the safety and effectiveness of the CoreValve System with low mortality and stroke rates in higher risk real-world patients with severe aortic stenosis.


Assuntos
Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Próteses Valvulares Cardíacas , Substituição da Valva Aórtica Transcateter/instrumentação , Idoso , Idoso de 80 Anos ou mais , Insuficiência da Valva Aórtica/etiologia , Insuficiência da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/mortalidade , Causas de Morte , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Substituição da Valva Aórtica Transcateter/mortalidade , Resultado do Tratamento
2.
Catheter Cardiovasc Interv ; 84(2): 283-90, 2014 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-24407885

RESUMO

OBJECTIVES: To identify predictors of mortality, functional status, and hemodynamical changes of patients undergoing transcatheter aortic valve implantation (TAVI) for low flow/low gradient aortic stenosis (LF/LG AS). BACKGROUND: There is little published data regarding the outcomes of patients with LF/LG AS following TAVI. METHODS: Sixty-eight patients with severe AS, left ventricular dysfunction (ejection fraction [EF] <35%) and low flow (LF) AS underwent TAVI. Patients were stratified according to the aortic mean pressure gradient (low gradient [LG]; with Pmean ≤40 mm Hg and high gradient [HG]: Pmean >40 mm Hg). The baseline parameters and clinical outcomes were subsequently compared among the two groups. Cox proportional hazards were used to identify predictors of 6-month mortality. RESULTS: There were 38 patients in the LG group and 30 patients in the HG group. There were no significant difference in 30-day mortality between the two groups. The 6-month and 1-year mortality, however, was 3.8-fold and 2.8-fold higher in the LG group than in the HG group (37.8% vs. 10.3%, P = 0.01 and 37.8% vs. 13.3%, respectively, P = 0.01). Univariable predictors for 6-month mortality were: STS Score, aortic valve area, and aortic mean pressure gradient. However, only STS Score (HR 1.08, 1.04-1.12, P < 0.001) remained as independent predictor in the multivariable analysis. Six months after TAVI, hemodynamical (EF > 50%) and clinical (NYHA class I) improvements were shown in both HG and LG groups. CONCLUSIONS: LF/LG AS does not influence procedural mortality after TAVI but exhibits a strong impact on 6-month and 1-year mortality. The survivors, however, exhibit considerable hemodynamical and clinical improvements. Therefore, risk stratification and TAVI benefit should be weighted in every patient with LF/LG AS.


Assuntos
Estenose da Valva Aórtica/terapia , Valva Aórtica , Cateterismo Cardíaco , Implante de Prótese de Valva Cardíaca/métodos , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/fisiopatologia , Estenose da Valva Aórtica/diagnóstico , Estenose da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/fisiopatologia , Cateterismo Cardíaco/efeitos adversos , Cateterismo Cardíaco/mortalidade , Distribuição de Qui-Quadrado , Feminino , Implante de Prótese de Valva Cardíaca/efeitos adversos , Implante de Prótese de Valva Cardíaca/mortalidade , Hemodinâmica , Humanos , Estimativa de Kaplan-Meier , Masculino , Análise Multivariada , Seleção de Pacientes , Modelos de Riscos Proporcionais , Recuperação de Função Fisiológica , Medição de Risco , Fatores de Risco , Índice de Gravidade de Doença , Volume Sistólico , Fatores de Tempo , Resultado do Tratamento , Função Ventricular Esquerda
3.
J Heart Valve Dis ; 23(1): 97-104, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24779335

RESUMO

BACKGROUND AND AIM OF THE STUDY: The study aim was to examine the hemodynamic performance of the BioValsalva porcine aortic valve conduit in the aortic root position. METHODS: Between February 2007 and April 2012, a total of 223 patients underwent aortic root replacement at the authors' institution. The BioValsalva valved conduit was implanted in 131 patients, and 86 of these patients (mean age 64.7 +/- 9.7 years) consented to participate in the present study. The parameters assessed to evaluate prosthetic valve function included mean pressure gradient (MPG) as measured by transthoracic Doppler echocardiography, and the effective orifice area (EOA) by means of the continuity equation. Hemodynamic data were obtained from all 86 patients within 10 days and six months postoperatively. RESULTS: The mean aortic cross-clamp time was 103 +/- 30 min. Concomitant procedures were performed in 50 patients (56.5%). Four patients developed valve dysfunction due to endocarditis, and underwent a reoperation without the need to perform a redo Bentall. The early MPG across the implanted valve was 12 +/- 4.6 mmHg (range: 4-24.8 mmHg), and the early mean EOA was 1.81 +/- 0.6 cm2 (range: 0.9-3.2 cm2). After six months the MPG was 11.6 +/- 4.6 mmHg (range: 2.2-25.5 mmHg) and the EOA was 1.69 +/- 0.43 cm2 (range: 0.8-2.6 cm2). CONCLUSION: Based on its special design with a stentless valve, which is not incorporated into the proximal suture line, the BioValsalva conduit has an advantage over intraoperatively prepared conduits in cases of reoperation. Besides simplified intraoperative handling, the BioValsalva conduit exhibits good systolic hemodynamic performance with large EOAs.


Assuntos
Aorta/cirurgia , Valva Aórtica/cirurgia , Bioprótese , Prótese Vascular , Próteses Valvulares Cardíacas , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Implante de Prótese de Valva Cardíaca/métodos , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese
4.
J Card Surg ; 29(6): 772-8, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25264220

RESUMO

OBJECTIVES: The aim of this study is to evaluate gender-related differences in clinical presentation and mortality in patients undergoing isolated surgical aortic valve replacement (SAVR). METHODS: We performed a retrospective analysis of all patients undergoing isolated SAVR from 2000 to 2011 in our center. Patient data were compared with regard to gender including baseline characteristics, 30-day, and late mortality. Kaplan-Meier survival curves were used to analyze long-term survival up to 10 years follow-up. Independent risk factors for 30-day and late mortality were identified using a Cox regression model. RESULTS: Two thousand one hundred ninety-seven patients were included, 1290 (58.7%) male patients and 907 (41.3%) female patients. Female patients were older (70 ± 11 vs. 64 ± 13 years, p < 0.001), presented with higher logistic EuroSCORE (7.5 ± 5.8 vs. 5.6 ± 6%, p = 0.006), and more common NYHA class III or IV (71 vs. 65%, p = 0.05). Male patients presented more often with LV dysfunction (7.5 vs. 2.8%, p < 0.001) and endocarditis (4.1 vs. 1.7%, p < 0.001) than female patients. Intraoperatively, female patients were more likely to have had a complete sternotomy (65 vs. 52%, p < 0.001) and SAVR with a bioprosthesis (87 vs. 78%, p < 0.001). Female patients exhibited a higher 30-day mortality (4.4 vs. 1.6%, p < 0.001) and late mortality (13 vs. 9.6%, p = 0.04) than male patients. After adjustment for baseline characteristics, only female gender was an independent predictor for 30-day mortality (HR 2.2, 95% CI 0.98 to 5.2, p = 0.05) and age as independent predictor for late mortality (HR 1.07, 95% CI 1.03 to 1.1, p < 0.001). CONCLUSION: Female patients were older and sicker and may therefore exhibit higher 30-day and late mortality than male patients. Female gender per se was a predictor for 30-day but not for late mortality.


Assuntos
Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Implante de Prótese de Valva Cardíaca/mortalidade , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Bioprótese/estatística & dados numéricos , Feminino , Seguimentos , Previsões , Próteses Valvulares Cardíacas/estatística & dados numéricos , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores Sexuais , Esternotomia/estatística & dados numéricos , Taxa de Sobrevida , Fatores de Tempo
5.
J Heart Valve Dis ; 22(5): 724-31, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24383388

RESUMO

BACKGROUND AND AIM OF THE STUDY: Valvular endocarditis constitutes high-risk cardiac surgery, with worse early and late results than for other disorders. Current data suggest that repairing endocarditis valves may produce better outcomes, but bicuspid endocarditis has been difficult to repair. Given the excellent early and late results now being achieved with autologous pericardial leaflet replacement, the present study involved complete pericardial leaflet replacement, a procedure that could facilitate the autologous reconstruction of bicuspid valves. METHODS: Four patients with endocarditis of bicuspid valves, each exhibiting variations in anatomy and presentation, were included. All four patients had received antibiotics preoperatively and had been converted to culture-negative. All had infection of the fused leaflet, and three had retention of their normal non-fused leaflets for the repair. Using glutaraldehyde-fixed autologous pericardium, all damaged leaflets were fully replaced, employing bileaflet repairs in three patients and a trileaflet repair in one patient. One patient required both bicuspid leaflets to be replaced with two autologous pericardial leaflets because of concurrent calcification. RESULTS: All four patients recovered uneventfully, and had fully competent valves with minimal gradients. All were subsequently managed without anticoagulation, and during up to two years of follow up the reconstructed valves functioned normally. None of the patients experienced any valve-related complications. CONCLUSION: In an anatomic spectrum of bicuspid endocarditis, the preservation of normal leaflets and complete replacement of damaged leaflets with autologous pericardium has provided an excellent reparative solution. This method could allow a stable autologous reconstruction in the majority of patients, although more experience and follow up will be necessary to fully validate the procedure.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/anormalidades , Procedimentos Cirúrgicos Cardíacos/métodos , Endocardite/cirurgia , Doenças das Valvas Cardíacas/cirurgia , Pericárdio/transplante , Adolescente , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/etiologia , Doença da Válvula Aórtica Bicúspide , Ecocardiografia Transesofagiana , Endocardite/complicações , Endocardite/diagnóstico , Feminino , Seguimentos , Doenças das Valvas Cardíacas/complicações , Doenças das Valvas Cardíacas/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X , Transplante Autólogo
6.
Thorac Cardiovasc Surg ; 61(5): 428-30, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23344750

RESUMO

Transcatheter aortic valve implantation was predominantly developed for patients with severe calcified aortic stenosis, as most devices are designed to anchor within the native valve calcium. We report on a patient with pure insufficiency of a non-calcified aortic valve, in whom an anatomically oriented catheter valve was implanted successfully. The design of the prosthesis with position feelers engaging the native aortic valve leaflets proved to be suitable for the treatment of pure aortic insufficiency.


Assuntos
Insuficiência da Valva Aórtica/terapia , Cateterismo Cardíaco/instrumentação , Implante de Prótese de Valva Cardíaca/instrumentação , Próteses Valvulares Cardíacas , Idoso , Insuficiência da Valva Aórtica/diagnóstico , Insuficiência da Valva Aórtica/fisiopatologia , Ecocardiografia Doppler em Cores , Feminino , Implante de Prótese de Valva Cardíaca/métodos , Humanos , Desenho de Prótese , Resultado do Tratamento
7.
Am Heart J ; 161(4): 735-9, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21473973

RESUMO

BACKGROUND: Acute kidney injury (AKI) can occur in up to one third of patients after surgical aortic valve replacement and can be associated with increased mortality. Little data exist, however, about the incidence, predictors, and prognostic implications of AKI after transcatheter aortic valve implantation (TAVI). OBJECTIVES: The aim of this study was to examine the incidence, predictors, and prognostic implications of AKI after TAVI. METHODS: Between January 2007 and January 2010, we prospectively enrolled 234 consecutive patients who underwent TAVI with the Medtronic CoreValve System (Medtronic CoreValve, Minneapolis, Minnesota) or Edwards SAPIEN (Edwards Lifesciences, Inc, Irvine, CA) heart valve. Acute kidney injury was defined according to the risk, injury, failure, loss, end-stage criteria. Patients with preoperative end-stage renal failure requiring dialysis were excluded. Baseline characteristics and procedural-related factors were examined as predictors for AKI in a multivariable regression model. RESULTS: Acute kidney injury was identified in 46 (19.6%) of 234 patients, and 24 (10.3%) of 234 patients required renal replacement therapy. The unadjusted in-hospital mortality rate was 15.2% in those patients without AKI and 7.7% in those with AKI (P = .015). Univariable logistic regression analysis identified preoperative serum creatinine, preoperative blood urea nitrogen, peripheral vascular disease, and blood transfusion to be associated with AKI. Preoperative serum creatinine level remained as the only independent predictor of AKI (OR 3.7 95%, CI 1.24-11.3, P = .019). The amount of contrast used (in milliliters) was not associated with AKI (OR 1.8 95%, CI 0.94-3.5, P = .07). CONCLUSION: In this study, we observed that one fifth of patients developed AKI after TAVI and that AKI was associated with increased in-hospital mortality. Preoperative serum creatinine level was identified as the only predictor of AKI.


Assuntos
Injúria Renal Aguda/epidemiologia , Injúria Renal Aguda/etiologia , Estenose da Valva Aórtica/cirurgia , Cateterismo Cardíaco/efeitos adversos , Implante de Prótese de Valva Cardíaca/efeitos adversos , Injúria Renal Aguda/sangue , Idoso , Idoso de 80 Anos ou mais , Creatinina/sangue , Feminino , Mortalidade Hospitalar , Humanos , Incidência , Masculino , Valor Preditivo dos Testes , Resultado do Tratamento
8.
J Electrocardiol ; 44(2): 232-4, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-20888005

RESUMO

The report is on a 49-year-old patient who experienced life-threatening ventricular tachyarrhythmias caused by a pacemaker lead that was abandoned 26 years ago, migrated with its proximal ending to the main pulmonary artery and remained there asymptomatically for at least 3 years.


Assuntos
Eletrodos Implantados/efeitos adversos , Migração de Corpo Estranho/etiologia , Marca-Passo Artificial/efeitos adversos , Taquicardia Ventricular/diagnóstico , Taquicardia Ventricular/etiologia , Falha de Equipamento , Migração de Corpo Estranho/diagnóstico , Humanos , Pessoa de Meia-Idade
9.
Innovations (Phila) ; 16(3): 267-272, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33734902

RESUMO

OBJECTIVE: In chronic aortic insufficiency (AI), the method and degree of annular downsizing required to achieve durable coaptation in aortic valve repair (AVr) remains poorly defined. This study evaluated the relationship between leaflet size and annular diameter to predict adequate annular sizing in remodeling AVr. METHODS: Under regulatory supervision, 74 patients with chronic tri-leaflet AI underwent AVr using ring annuloplasty and leaflet reconstruction. Fifty-four (73%) had ascending aortic (n = 25) and/or root (n = 29) aneurysms, and aortic grafts were sized 5 to 7 mm larger than the rings. Intraoperatively, leaflet free-edge length (FEL) was measured with special ball sizers positioned in the coronary sinus, and "normal" annular diameter was predicted from the validated formula: Required "normal" diameter = FEL/1.5. "Normal" annular diameters predicted from FEL were compared with pathologic diameters measured intraoperatively with Hegar dilators, and both were correlated with gender, age, and BSA. RESULTS: Average age was 62.1 ± 13.3 years (mean ± SD), 73% (54/74) were male, and 96% (71/74) had moderate-to-severe AI. All patients had annular dilatation, with a pathologic diameter 26.6 ± 2.3 mm before repair, and a predicted "normal" diameter of 21.7 ± 1.7 mm (P < 0.001). Both predicted and pathologic annular diameters were larger in men (P < 0.001), but no relationship existed with age. BSA correlated with both predicted and pathologic diameters, although variability was large. CONCLUSIONS: Based on a simple validated method to predict "normal" annular diameter, all patients with chronic AI have some degree of annular dilatation. This finding implies that most AVr should include annuloplasty, with adequate and precise annular reduction based on leaflet size.


Assuntos
Insuficiência da Valva Aórtica , Anuloplastia da Valva Cardíaca , Idoso , Aorta , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/cirurgia , Dilatação Patológica , Humanos , Masculino , Pessoa de Meia-Idade
10.
Am Heart J ; 160(3): 451-7, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20826252

RESUMO

BACKGROUND: Transcatheter aortic valve implantation (TAVI) has been introduced to offer a new treatment option for patients who are not eligible for conventional aortic valve replacement. Especially in this subset of patients, the expected improvement of quality of life (QoL) after valve implantation will be critical for decision-making for TAVI. METHODS: We performed a prospective analysis of 99 patients (41 male) aged 82 years (range 57-94 years) who underwent TAVI. For assessment of QoL, the Short Form 36 Health Survey Questionnaire was used preoperatively and 3 months after TAVI. RESULTS: Thirty-day mortality rate was 10.1%. The Short Form 36 Health Survey Questionnaire scores for physical functioning (34.7 +/- 2.8 vs 48.5 +/- 3.4, P < .001), bodily pain (61.7 +/- 3.1 vs 73.2 +/- 2.9, P < .01), general health (47.1 +/- 1.9 vs 54.1 +/- 2.3, P < .01), and vitality (37 +/- 2.8 vs 46.1 +/- 2.7, P < .01) increased significantly 3 months after TAVI compared with preoperative scores. No significant changes were found for role-physical (21.7 +/- 4.1 vs 31.1 +/- 5.1, P < .08), social functioning (74.6 +/- 3.4 vs 74.6 +/- 3.1, P = 1), and mental health (63 +/- 2.9 vs 67.4 +/- 2.2, P = .17) 3 months after TAVI. Only the score for role-emotional (69.3 +/- 5.6 vs 51.7 +/- 6, P = .02) decreased significantly 3 months after TAVI compared with the preoperative score. Corresponding to these results, the physical health summarized score (31.2 +/- 1.2 vs 38.6 +/- 1.6, P < .001) was significantly increased 3 months after TAVI compared with the preoperative score, whereas the mental health summarized score (48.5 +/- 1.8 vs 47.3 +/- 1.7, P = .5) showed no changes. CONCLUSION: In patients who are not eligible for conventional aortic valve replacement, TAVI leads to a considerable QoL improvement within 3 months after valve implantation.


Assuntos
Estenose da Valva Aórtica/cirurgia , Implante de Prótese de Valva Cardíaca , Qualidade de Vida , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica , Estenose da Valva Aórtica/epidemiologia , Cateterismo Cardíaco , Cateterismo , Feminino , Indicadores Básicos de Saúde , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Desenho de Prótese
11.
Catheter Cardiovasc Interv ; 76(7): 1009-19, 2010 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-20518012

RESUMO

OBJECTIVES: We compared the annulus diameters measured by transthoracic echocardiography (TTE), transesophageal echocardiography (TEE), and dual-source computed tomography (DSCT) before transcatheter aortic valve implantation (TAVI). BACKGROUND: In TAVI correct evaluation of the aortic annulus is mandatory to choose the correct prosthesis type and size and to prevent complications. There is no gold standard for the assessment of aortic annulus diameters. METHODS: Preoperative assessment of the aortic annulus with TTE, TEE, and DSCT was performed in 187 consecutive patients referred for TAVI between June 2007 and May 2009. RESULTS: The mean aortic annuli were 22.6 ± 2.0 mm measured with DSCT, 22.3 ± 2.5 mm with TTE, and 22.9 ± 2.2 mm with TEE. Despite a strong correlation between the measurement techniques, relevant statistical spread occurred with differences up to 3 mm in all measurement methods. Inter- and intraobserver variability was good for TEE and less satisfactory for DSCT measurements. TEE measurements taken as decisive parameter for the implantation changed the implantation strategy in 15.5% of patients and did not show an increased rate of procedural complications. CONCLUSION: Despite a strong correlation, the measurement techniques for the aortic annulus show relevant statistical spread, consequently one measurement technique cannot definitely predict another. TEE measurements show a more satisfactory intra- and interobserver variability than DSCT. Taking TEE annulus measurements as decisive parameter for the implantation has an impact on the implantation strategy and is safe with a low rate of procedural complications.


Assuntos
Estenose da Valva Aórtica/diagnóstico , Estenose da Valva Aórtica/terapia , Valva Aórtica/diagnóstico por imagem , Cateterismo Cardíaco , Ecocardiografia Transesofagiana , Implante de Prótese de Valva Cardíaca/métodos , Tomografia Computadorizada por Raios X , Idoso , Idoso de 80 Anos ou mais , Bioprótese , Cateterismo Cardíaco/efeitos adversos , Cateterismo Cardíaco/instrumentação , Feminino , Alemanha , Próteses Valvulares Cardíacas , Implante de Prótese de Valva Cardíaca/efeitos adversos , Implante de Prótese de Valva Cardíaca/instrumentação , Humanos , Modelos Logísticos , Masculino , Variações Dependentes do Observador , Valor Preditivo dos Testes , Desenho de Prótese , Reprodutibilidade dos Testes , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Resultado do Tratamento
12.
JTCVS Tech ; 1: 18-25, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34317698

RESUMO

OBJECTIVE: As bicuspid aortic valve (BAV) repair evolves, more effective annular reduction and stabilization could be advantageous. A geometric annuloplasty ring has been developed, and 2-year regulatory outcomes of a first-in-humans pilot trial are reported. METHODS: A prospective first-in-humans trial of BAV ring annuloplasty was completed in 16 patients. Patient age was 44.4 ± 11.3 (mean ± standard deviation) years, preoperative aortic insufficiency grade was 2.5 ± 1.0, New York Heart Association class 1.8 ± 0.4, and mean systolic gradient 13.4 ± 12.9 mm Hg. Three patients had Sievers type 0 BAV, 11 had type 1, and 2 were type 2. The Dacron-covered titanium rings had circular base geometry with 180° subcommissural posts and were implanted subannularly. Leaflets were reconstructed using plication/cleft closure, creating an effective height of ≥8 mm, even if modest gradients were induced. RESULTS: Mean pre-repair annular diameter was 28.6 ± 3.3 mm, and the average ring diameter was 22.3 ± 1.6 mm. All valves required leaflet plication/reconstruction; pericardium was avoided; and 7 patients had aortic replacement for aneurysms. No early mortalities or major complications occurred. Two patients required early prosthetic valve replacement for technical errors, and all were between 24-38 months' postoperative at follow-up. No late mortalities or valve-related complications occurred, and all patients reverted to New York Heart Association class I. Aortic insufficiency reduction was significant to grade 0.9 ± 0.5 at 2-years (P < .0001). Mean valve gradients were acceptable (13.3 ± 5.0 mm Hg at 2 years; overall P = .11) and tended to fall over time (P < .0001). CONCLUSIONS: Geometric ring annuloplasty was safe and effective for BAV repair. AI reduction was significant, valve gradients were satisfactory, and clinical outcomes were excellent. Geometric ring annuloplasty could simplify and standardize BAV repair.

13.
Herz ; 34(5): 374-80, 2009 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-19711033

RESUMO

BACKGROUND AND PURPOSE: The technology of catheter- based aortic valve implantation is a new, less invasive therapeutic option for patients with symptomatic high-grade aortic stenosis. The present paper aims to demonstrate that optimal therapy should be provided by a multidisciplinary team consisting of cardiac surgeons, cardiologists and cardioanesthesiologists in a hybrid suite. PATIENTS AND METHODS: From June 2007 to April 2009, 234 patients have been treated by transcatheter aortic valve implantation through different access sites (n = 168 femoral artery, n = 56 left ventricular apex, n = 7 subclavian artery, n = 3 ascending aorta) at the German Heart Center Munich, Germany. An algorithm for the choice of the most appropriate access site for the individual patient was established. RESULTS: The 30-day mortality was 11.2% in this high-risk patient cohort. A certain number of periprocedural complications required surgical management. There was a considerable clinical improvement of the patients 6 months after the procedure. CONCLUSION: Integrating the new methods of aortic valve implantation into a cardiac surgery program, all kinds of surgical and interventional treatment options may be offered to the patient with aortic stenosis by one multidisciplinary team. A qualified and safe performance of transcatheter aortic valve implantation and the management of potential complications require the presence of a hybrid suite.


Assuntos
Estenose da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/cirurgia , Cateterismo Cardíaco/mortalidade , Implante de Prótese de Valva Cardíaca/mortalidade , Próteses Valvulares Cardíacas/estatística & dados numéricos , Idoso de 80 Anos ou mais , Feminino , Alemanha/epidemiologia , Humanos , Masculino , Equipe de Assistência ao Paciente , Prevalência , Análise de Sobrevida , Taxa de Sobrevida
14.
Heart Surg Forum ; 12(1): E63-4, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19233771

RESUMO

Retrograde transcatheter aortic valve implantation (TAVI) was successfully performed in an 80-year-old woman who had critical aortic stenosis but had no conventional access available because of severe calcifications of the femoral, iliac, and subclavian arteries. The TAVI procedure was performed with the CoreValve ReValving System. The currently available results obtained with TAVI show that such approaches provide significant clinical improvement in patients with severe aortic stenosis and unacceptable risk or contraindications for surgery. The ascending aorta approach might help to expand the implantation possibilities for those patients for whom the typical access sites are not available.


Assuntos
Aorta/cirurgia , Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Cateterismo Cardíaco/métodos , Implante de Prótese de Valva Cardíaca/métodos , Próteses Valvulares Cardíacas , Idoso de 80 Anos ou mais , Feminino , Humanos , Resultado do Tratamento
15.
Eur J Cardiothorac Surg ; 34(2): 402-9; discussion 409, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18579403

RESUMO

OBJECTIVE: Tricuspid valve (TV) surgery is usually performed as a concomitant reconstruction procedure in addition to the correction of other cardiac pathologies. Isolated tricuspid procedures are exceptionally rare. Prosthetic valve replacement is also seldom required. Generally, these patients face a high risk of operative mortality and long-term outcome is poor. In this study we reviewed our experience with TV surgery focusing on risk factors for operative mortality, long-term outcome and incidence of valve related complications. METHODS: Retrospective analysis of 416 consecutive patients >18 years with acquired TV disease operated on between 1974 and 2003. The follow-up is 97% complete (mean 5.9+/-6.3 years). Three hundred and sixty-six patients (88%) underwent TV surgery with concomitant mitral (n=340) or aortic (n=100) valve surgery. The tricuspid valve was repaired in 310 patients (74.5%) and replaced in 106 (25.5%). A biological prosthesis was used in 68 patients (64%). Mean age at repair and replacement was 61+/-12.5 and 50+/-11.3 years, respectively (p<0.001). RESULTS: Overall 30-day mortality was 18.8% (78/416) and decreased from 33.3% (1974-1979) to 11.1% (2000-2003) (p< or =0.0001). Thirty-day mortality after TV repair and replacement was 13.9% (43/310) and 33% (35/106), respectively (p< or =0.001). Cox regression analysis revealed TV replacement as an independent predictor of 30-day mortality. Ten-year actuarial survival after TV repair and replacement was 47+/-3.5% and 37+/-4.8%, respectively (p=0.002). Forty-five patients (10.8%) required a TV re-operation after 7.7+/-5.1 years. Freedom from TV re-operation 10 years after TV repair and replacement was 83+/-3.6% and 79+/-6.1%, respectively (p=0.092). CONCLUSIONS: Patients who require tricuspid valve surgery constitute a high-risk group. Tricuspid valve repair is associated with better perioperative and long-term outcome than valve replacement. However, patients undergoing replacement showed a significant higher incidence of risk factors for operative mortality. The incidence of re-operation is low with no significant difference when the tricuspid valve has been repaired or replaced. When valve replacement is necessary we recommend the use of a biological prosthesis considering the poor long-term survival.


Assuntos
Implante de Prótese de Valva Cardíaca/métodos , Insuficiência da Valva Tricúspide/cirurgia , Estenose da Valva Tricúspide/cirurgia , Valva Tricúspide/cirurgia , Adulto , Fatores Etários , Idoso , Métodos Epidemiológicos , Feminino , Doenças das Valvas Cardíacas/cirurgia , Implante de Prótese de Valva Cardíaca/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Hemorragia Pós-Operatória/etiologia , Reoperação/métodos , Tromboembolia/etiologia , Resultado do Tratamento
16.
J Interv Card Electrophysiol ; 22(1): 5-11, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18389353

RESUMO

BACKGROUND: Surgical ablation techniques using microwave energy are an alternative to catheter-based ablation therapy in the treatment of atrial fibrillation. We investigate electrical conduction properties of linear lesions after epicardial ablation in a pig model by using an electroanatomic mapping system. METHODS: After medial sternotomy in eight pigs epicardial pacing wires were placed on the anterior and posterolateral wall of the right atrium. Endocardial electroanatomical mapping was performed during pacing from anterior and posterolateral. Epicardial ablation was implemented in between the superior and inferior caval vein using microwave energy. Mapping was repeated to demonstrate conduction block or gap across the ablation line. When conduction gap was present the ablation procedure was repeated. Hearts were removed for histologic evaluation. RESULTS: Conduction block was observed in two pigs after the first ablation and in two additional pigs after the second ablation. Conduction gap was present in three pigs after the second ablation. One animal died during the second ablation. Histologic evaluation showed more severe transmural cellular damage in lesions with conduction gap. Complete lesions with conduction block more often showed moderate alterations. CONCLUSIONS: Epicardial microwave ablation can induce bidirectional conduction block, which is believed to be essential for therapeutic efficacy. However, the intraoperative macroscopic visible lesion and histological findings are not reliable markers of bidirectional conduction block. The Carto-Qwik-Map-System is an effective system to evaluate epicardial microwave lesions and to locate conduction gap areas intraoperatively. This increased the success rate regarding acute bidirectional conduction block after ablation in our experimental setting.


Assuntos
Fibrilação Atrial/cirurgia , Técnicas Eletrofisiológicas Cardíacas , Sistema de Condução Cardíaco/fisiopatologia , Micro-Ondas/uso terapêutico , Pericárdio/cirurgia , Animais , Fibrilação Atrial/patologia , Fibrilação Atrial/fisiopatologia , Estimulação Cardíaca Artificial , Feminino , Átrios do Coração , Miocárdio/patologia , Sus scrofa
17.
Herz ; 33(5): 374-6, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18773158

RESUMO

In case of minimally invasive open heart surgery, access for intrathoracic cannulation is limited and therefore femoral vessel cannulation is necessary. Complications after surgical exposure of the femoral vessels are well known. The authors describe their technique for percutaneous femoral vessel cannulation, which allows a safe establishment of cardiopulmonary bypass, reduces the incidence of groin complications, and offers excellent cosmetic results.


Assuntos
Ponte Cardiopulmonar/instrumentação , Ponte Cardiopulmonar/métodos , Cateterismo/instrumentação , Cateterismo/métodos , Artéria Femoral/cirurgia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
18.
Heart Surg Forum ; 11(5): E323-4, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18948247

RESUMO

We successfully implanted a bioprosthetic aortic valve via the right subclavian artery within the framework of the CoreValve transapical aortic valve replacement (TAVR) ReValving (CoreValve, Irvine, CA, USA) clinical trial on November 20, 2007, at the Clinic for Cardiovascular Surgery at the German Heart Center Munich, Technical University Munich. The self-expanding aortic valve prosthesis is primarily designed for retrograde delivery across the aortic valve. The described approach via the right subclavian artery was performed because of severe peripheral vascular disease of the femoral and iliac arteries, as well as the left subclavian artery, and because a transapical delivery system was not available at the time of surgery.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Bioprótese , Implante de Prótese de Valva Cardíaca/métodos , Próteses Valvulares Cardíacas , Artéria Subclávia/cirurgia , Idoso , Análise de Falha de Equipamento , Feminino , Humanos , Desenho de Prótese , Resultado do Tratamento
19.
Innovations (Phila) ; 13(4): 248-253, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30138245

RESUMO

OBJECTIVE: An aortic annuloplasty ring could be useful for aortic valve repair. This trial evaluated intermediate-term outcomes of internal geometric ring annuloplasty for repair of trileaflet and bicuspid aortic insufficiency associated with ascending aortic and/or aortic root aneurysms. METHODS: Under regulatory supervision, 47 patients with aortic insufficiency and ascending aortic (n = 22) and/or aortic root (n = 25) aneurysms were managed with aortic valve repair and aneurysm resection. Valve repair was performed using trileaflet (n = 40) or bicuspid (n = 7) internal geometric rings, together with leaflet reconstruction. Ascending aortic and/or remodeling root replacements were accomplished with Dacron grafts 5 to 7 mm larger than the rings. An Echo Core Lab provided independent echocardiographic assessments, and changes over time were evaluated by Friedman tests. RESULTS: Mean ± SD age was 60 ± 14 years, 57% (27/47) were male, 15% (7/47) had bicuspid valves, 87% (41/47) had moderate-to-severe aortic insufficiency, and 13% (6/47) had mild aortic insufficiency. All patients had annular dilatation, with a mean ± SD of 26.5 ± 2.6 mm before repair, and mean ± SD ring sizes were 21.7 ± 1.7 mm. Follow-up was 42 months (mean = 27 months). No operative mortality or valve-related complications occurred. Two patients died beyond 1 year from nonvalve-related causes. One patient required valve replacement for repair failure. Survival free of complications or valve replacement was 94% at 2 years. Significant reduction in aortic insufficiency and New York Heart Association class were observed (P < 0.0001), and valve gradients remained low. No heart block or direct ring complications occurred. CONCLUSIONS: In preliminary regulatory studies, aortic ring annuloplasty seemed safe and effective during aortic aneurysm surgery. This approach could help standardize aortic valve repair.


Assuntos
Aneurisma Aórtico/cirurgia , Valva Aórtica/cirurgia , Anuloplastia da Valva Cardíaca , Próteses Valvulares Cardíacas/efeitos adversos , Adulto , Idoso , Aneurisma Aórtico/mortalidade , Anuloplastia da Valva Cardíaca/efeitos adversos , Anuloplastia da Valva Cardíaca/instrumentação , Anuloplastia da Valva Cardíaca/mortalidade , Anuloplastia da Valva Cardíaca/estatística & dados numéricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Desenho de Prótese , Reoperação
20.
Ann Thorac Surg ; 103(2): 573-579, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27623272

RESUMO

BACKGROUND: Mitral valve (MV) repair through a right minithoracotomy (RT) is technically more demanding than through a median sternotomy (MS) and has been cited for a higher rate of reoperation, increased postoperative bleeding, thromboembolic events, poor visualization, and longer operative times. Randomized studies are not available, however, and specific characteristics of patients who undergo operation with either technique are usually highly different. Therefore, a propensity matching study was performed to reduce selection bias. METHODS: A retrospective analysis was made of 745 patients, 501 in group RT (67%) and 244 in group MS (33%), who underwent isolated MV repair between 2000 and 2010. Propensity matching identified 97 matched patient pairs for comparison of functional outcome, survival, incidence of reoperation, and quality of life after MV repair. RESULTS: Propensity matched patients in group RT had longer cardiopulmonary bypass time (120 ± 28 versus 99 ± 30 minutes, p < 0.001) and cross-clamp time (86 ± 23.5 versus 74 ± 25 minutes, p < 0.001). Thirty-day mortality was similar for both groups (RT, 0%; MS, 1%; p = 0.13). There were no significant differences in other outcomes such as amount of red blood cell transfusion, ventilation time, and hospital stay. Five-year survival in group RT (93.5% ± 3.7%) versus group MS (87.4% ± 3.6%, p = 0.556) and freedom from MV reoperation (93.3% ± 2.9% versus 97.9% ± 1.5%, respectively; p = 0.157) were not different. Functional outcome and quality of life variables were similar. CONCLUSIONS: Mitral valve surgery through a right minithoracotomy is a safe procedure associated with a very low operative mortality comparable to the standard sternotomy approach. In addition to improved cosmetics, minimally invasive MV surgery provides equally durable results as the standard sternotomy approach.


Assuntos
Implante de Prótese de Valva Cardíaca/métodos , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Insuficiência da Valva Mitral/cirurgia , Valva Mitral/cirurgia , Esternotomia/métodos , Toracotomia/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Alemanha/epidemiologia , Mortalidade Hospitalar/tendências , Humanos , Masculino , Pessoa de Meia-Idade , Insuficiência da Valva Mitral/mortalidade , Duração da Cirurgia , Pontuação de Propensão , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida/tendências , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA