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1.
J Cardiol Cases ; 29(3): 116-119, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38481646

RESUMO

We report the case of a redo Ross surgery complicated by an ostial left circumflex occlusion requiring emergent percutaneous coronary intervention. The latter was complicated by coronary perforation treated by two covered stents with V-stenting technique. After immediate success, the clinical course was marked by acute stent thrombosis requiring emergent coronary bypass. Learning objectives: Ostial left circumflex perforation is a rare and potentially fatal complication that is challenging to manage. V stenting technique with two covered stents could be used as a life-saving procedure, but is associated with a high thrombotic risk.

2.
J Am Coll Cardiol ; 81(13): 1263-1278, 2023 04 04.
Artigo em Inglês | MEDLINE | ID: mdl-36990546

RESUMO

BACKGROUND: On-pump cardiac surgery triggers sterile inflammation and postoperative complications such as postoperative atrial fibrillation (POAF). Hematopoietic somatic mosaicism (HSM) is a recently identified risk factor for cardiovascular diseases and results in a shift toward a chronic proinflammatory monocyte transcriptome and phenotype. OBJECTIVES: The aim of this study was to assess the prevalence, characteristics, and impact of HSM on preoperative blood and myocardial myeloid cells as well as on outcomes after cardiac surgery. METHODS: Blood DNA from 104 patients referred for surgical aortic valve replacement (AVR) was genotyped using the HemePACT panel (576 genes). Four screening methods were applied to assess HSM, and postoperative outcomes were explored. In-depth blood and myocardial leukocyte phenotyping was performed in selected patients using mass cytometry and preoperative and postoperative RNA sequencing analysis of classical monocytes. RESULTS: The prevalence of HSM in the patient cohort ranged from 29%, when considering the conventional HSM panel (97 genes) with variant allelic frequencies ≥2%, to 60% when considering the full HemePACT panel and variant allelic frequencies ≥1%. Three of 4 explored HSM definitions were significantly associated with higher risk for POAF. On the basis of the most inclusive definition, HSM carriers exhibited a 3.5-fold higher risk for POAF (age-adjusted OR: 3.5; 95% CI: 1.52-8.03; P = 0.003) and an exaggerated inflammatory response following AVR. HSM carriers presented higher levels of activated CD64+CD14+CD16- circulating monocytes and inflammatory monocyte-derived macrophages in presurgery myocardium. CONCLUSIONS: HSM is frequent in candidates for AVR, is associated with an enrichment of proinflammatory cardiac monocyte-derived macrophages, and predisposes to a higher incidence of POAF. HSM assessment may be useful in the personalized management of patients in the perioperative period. (Post-Operative Myocardial Incident & Atrial Fibrillation [POMI-AF]; NCT03376165).


Assuntos
Fibrilação Atrial , Procedimentos Cirúrgicos Cardíacos , Humanos , Fibrilação Atrial/etiologia , Fibrilação Atrial/genética , Mosaicismo , Valva Aórtica/cirurgia , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Fatores de Risco , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/genética , Complicações Pós-Operatórias/diagnóstico
3.
Ann Thorac Surg ; 115(6): 1403-1410, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-35643333

RESUMO

BACKGROUND: Valve-sparing aortic root replacement with the David procedure is an alternative to the Bentall procedure in patients with aortic root aneurysm. The aim of this study was to describe our long-term experience with this technique and the predictive factors of late failure. METHODS: Between January 1998 and August 2019, 300 consecutive patients underwent a David procedure. Clinical and echocardiographic early- and long-term outcomes were analyzed. Median follow-up was 7.0 years (range, 4.1-11.5), with 98.3% complete. RESULTS: Early mortality was 1%. No early valve-related reoperations occurred. There were 9 cardiac-related deaths and 22 reinterventions (19 valve-related). All patients survived reoperation. In 3 patients reintervention consisted of transcatheter aortic valve implantation. Overall survival rates were 95.3% (95% confidence interval [CI], 92.0-97.2), 91.1% (95% CI, 86.5-94.2), and 82.9% (95% CI, 75.3-88.4) at 5, 10, and 15 years, respectively. Freedom from postoperative aortic insufficiency (AI) grade ≥ 2 was 84.8% (95% CI, 79.9-88.6) and 74.3% (95% CI, 67.4-79.9) at 5 and 10 years, respectively. Freedom from reintervention for aortic valve disease was 97.1% (95% CI, 94.2-98.5), 92.9% (95% CI, 88.2-95.7), and 92.5% (95% CI, 87.1-95.7) at 5, 10, and 15 years, respectively. Preoperative AI ≥ 2 (hazard ratio, 1.782; 95% CI, 1.352-2.350) and a ventriculoaortic junction ≥ 29 mm (hazard ratio, 3.379; 95% CI, 1.726-6.616) were predictive factors for postoperative AI ≥ 2 in a multivariate analysis (P < .001). CONCLUSIONS: Preoperative AI ≥ 2 and a ventriculoaortic junction ≥ 29 mm were identified as risk factors for late postoperative AI ≥ 2.


Assuntos
Insuficiência da Valva Aórtica , Implante de Prótese de Valva Cardíaca , Humanos , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Resultado do Tratamento , Estudos Retrospectivos , Insuficiência da Valva Aórtica/etiologia , Aorta/cirurgia , Reoperação/efeitos adversos , Implante de Prótese de Valva Cardíaca/métodos
4.
Circulation ; 146(5): 383-397, 2022 08 02.
Artigo em Inglês | MEDLINE | ID: mdl-35722876

RESUMO

BACKGROUND: Cerebral microbleeds (CMBs) have been observed in healthy elderly people undergoing systematic brain magnetic resonance imaging. The potential role of acute triggers on the appearance of CMBs remains unknown. We aimed to describe the incidence of new CMBs after transcatheter aortic valve replacement (TAVR) and to identify clinical and procedural factors associated with new CMBs including hemostatic measures and anticoagulation management. METHODS: We evaluated a prospective cohort of patients with symptomatic aortic stenosis referred for TAVR for CMBs (METHYSTROKE [Identification of Epigenetic Risk Factors for Ischemic Complication During the TAVR Procedure in the Elderly]). Standardized neurologic assessment, brain magnetic resonance imaging, and analysis of hemostatic measures including von Willebrand factor were performed before and after TAVR. Numbers and location of microbleeds on preprocedural magnetic resonance imaging and of new microbleeds on postprocedural magnetic resonance imaging were reported by 2 independent neuroradiologists blinded to clinical data. Measures associated with new microbleeds and postprocedural outcome including neurologic functional outcome at 6 months were also examined. RESULTS: A total of 84 patients (47% men, 80.9±5.7 years of age) were included. On preprocedural magnetic resonance imaging, 22 patients (26% [95% CI, 17%-37%]) had at least 1 microbleed. After TAVR, new microbleeds were observed in 19 (23% [95% CI, 14%-33%]) patients. The occurrence of new microbleeds was independent of the presence of microbleeds at baseline and of diffusion-weighted imaging hypersignals. In univariable analysis, a previous history of bleeding (P=0.01), a higher total dose of heparin (P=0.02), a prolonged procedure (P=0.03), absence of protamine reversion (P=0.04), higher final activated partial thromboplastin time (P=0.05), lower final von Willebrand factor high-molecular-weight:multimer ratio (P=0.007), and lower final closure time with adenosine-diphosphate (P=0.02) were associated with the occurrence of new postprocedural microbleeds. In multivariable analysis, a prolonged procedure (odds ratio, 1.22 [95% CI, 1.03-1.73] for every 5 minutes of fluoroscopy time; P=0.02) and postprocedural acquired von Willebrand factor defect (odds ratio, 1.42 [95% CI, 1.08-1.89] for every lower 0.1 unit of high-molecular-weight:multimer ratio; P=0.004) were independently associated with the occurrence of new postprocedural microbleeds. New CMBs were not associated with changes in neurologic functional outcome or quality of life at 6 months. CONCLUSIONS: One out of 4 patients undergoing TAVR has CMBs before the procedure and 1 out of 4 patients develops new CMBs. Procedural or antithrombotic management and persistence of acquired von Willebrand factor defect were associated with the occurrence of new CMBs. REGISTRATION: URL: https://www. CLINICALTRIALS: gov; Unique identifier: NCT02972008.


Assuntos
Hemorragia Cerebral , Substituição da Valva Aórtica Transcateter , Idoso , Valva Aórtica/cirurgia , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/cirurgia , Hemorragia Cerebral/diagnóstico por imagem , Hemorragia Cerebral/epidemiologia , Hemorragia Cerebral/etiologia , Feminino , Fluoroscopia , Hemostáticos , Humanos , Imageamento por Ressonância Magnética , Masculino , Estudos Prospectivos , Qualidade de Vida , Fatores de Risco , Substituição da Valva Aórtica Transcateter/efeitos adversos , Resultado do Tratamento , Fator de von Willebrand
6.
Eur Heart J Cardiovasc Imaging ; 23(11): 1552-1561, 2022 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-34751769

RESUMO

AIMS: To compare the clinical significance of exercise echocardiography (ExE) and cardiopulmonary exercise testing (CPX) in patients with ≥moderate primary mitral regurgitation (MR) and discrepancy between symptoms and MR severity. METHODS AND RESULTS: Patients consulting for ≥moderate discordant primary MR prospectively underwent low (25 W) ExE, peak ExE, and CPX within 2 months in Lille and Rennes University Hospital. Patients with Class I recommendation for surgical MR correction were excluded. Changes in MR severity, systolic pulmonary artery pressure (SPAP), left ventricular ejection fraction (LVEF), and tricuspid annular plane systolic excursion were evaluated during ExE. Patients were followed for major events (ME): cardiovascular death, acute heart failure, or mitral valve surgery. Among 128 patients included, 22 presented mild-to-moderate, 61 moderate-to-severe, and 45 severe MR. Unlike MR variation, SPAP and LVEF were successfully assessed during ExE in most patients. Forty-one patients (32%) displayed reduced aerobic capacity (peak VO2 < 80% of predicted value) with cardiac limitation in 28 (68%) and muscular or respiratory limitation in the 13 others (32%). ME occurred in 61 patients (47.7%) during a mean follow-up of 27 ± 21 months. Twenty-five Watts SPAP [hazard ratio (HR) (95% confidence interval, CI) = 1.03 (1.01-1.06), P = 0.003] and reduced aerobic capacity [HR (95% CI) = 1.74 (1.03-2.95), P = 0.04] were independently predictive of ME, even after adjustment for MR severity. The cut-off of 55 mmHg for 25 W SPAP showed the best accuracy to predict ME (area under the curve = 0.60, P = 0.05). CONCLUSION: In patients with ≥moderate primary MR and discordant symptoms, 25 W exercise pulmonary hypertension, defined as an SPAP ≥55 mmHg, and poor aerobic capacity during CPX are independently associated with adverse events.


Assuntos
Insuficiência da Valva Mitral , Humanos , Insuficiência da Valva Mitral/diagnóstico por imagem , Insuficiência da Valva Mitral/cirurgia , Teste de Esforço , Prognóstico , Volume Sistólico , Função Ventricular Esquerda , Ecocardiografia
7.
Heart Lung Circ ; 31(1): e1-e4, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34600813

RESUMO

Minimally invasive cardiac surgery is mainly dedicated to acquired left-sided valve diseases. Ministernotomy is widely used for aortic valve repair or replacement, whereas pulmonary valve repair via this approach has been reported only recently. This article aims to describe the use of ministernotomy for pulmonary valve replacement in adult congenital patients.


Assuntos
Procedimentos Cirúrgicos Cardíacos , Implante de Prótese de Valva Cardíaca , Valva Pulmonar , Adulto , Humanos , Procedimentos Cirúrgicos Minimamente Invasivos , Valva Pulmonar/diagnóstico por imagem , Valva Pulmonar/cirurgia , Resultado do Tratamento
8.
J Thorac Cardiovasc Surg ; 164(3): 905-913.e19, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-33131891

RESUMO

OBJECTIVES: To assess the benefit/risk ratio to perform a coronary angiography (CA) before surgery for infective endocarditis (IE). METHODS: We conducted a single-center prospective registry including 272 patients with acute IE intended for surgery and compared patients who underwent a preoperative CA (n = 160) with those who did not (n = 112). A meta-analysis of 3 observational studies was also conducted and included 551 patients: 342 who underwent a CA and 209 who did not. RESULTS: In our registry, combined bypass surgery (CABG) was performed in 17% of the patients with preoperative CA. At 2 years, the rate of the primary composite end point (all-cause death, new systemic embolism, stroke, new hemodialysis) was similar in the CA (38%) and no-CA (37%) groups. In-hospital and 2-year individual end points were all similar between groups. There were only 2 episodes of systemic embolism after CA and only one possibly related to a vegetation dislodgement. In the meta-analysis, combined CABG was performed in 18% of the patients with preoperative CA. All-cause death was similar in both groups: odds ratio, 0.98 [0.62-1.53], P = .92. Only 5 cases of systemic embolism possibly related to a vegetation dislodgement were reported. New hemodialysis was numerically more frequent in the CA group: odds ratio, 1.68 [0.79-3.58] (18% vs 14%, P = .18). CONCLUSIONS: In daily practice, two-thirds of the patients with acute IE who required surgery have a preoperative CA leading to a combined CABG in 18% of the patients. Our results suggest that to perform a preoperative CA in this context is not associated with improved prognosis.


Assuntos
Embolia , Endocardite Bacteriana , Endocardite , Angiografia Coronária/efeitos adversos , Endocardite/complicações , Endocardite/diagnóstico por imagem , Endocardite/cirurgia , Endocardite Bacteriana/complicações , Endocardite Bacteriana/diagnóstico por imagem , Endocardite Bacteriana/cirurgia , Humanos , Estudos Prospectivos , Fatores de Risco
9.
Ann Vasc Surg ; 77: 348.e7-348.e11, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34437965

RESUMO

Disease-causing heterozygous variants in the ACTA2 gene cause an autosomal dominant heritable thoracic aortic disease (HTAD) with thoracic aortic aneurysm and dissection as main phenotype, and occasional extravascular abnormalities such as livedo reticularis. ACTA2-HTAD accounts for an important part of non-syndromic HTAD, with detection rates varying between 1.5-21% according to different studies. A consensus statement for the screening and management of patients with pathogenic ACTA2 variants has been recently published by the European reference network for rare vascular diseases (VASCERN). However, management of ACTA2 patients is often challenged by extremely variable inter- and intra-familial clinical courses of the disease. Here we report a family harboring a disease-causing ACTA2 variant. The proband and two siblings presented with acute type A aortic dissection and rupture involving nondilated aortic segments before the age of 30. Their mother died at 49 years-old from type B aortic dissection and rupture. Genetic testing revealed the heterozygous novel p.(Pro335Arg) variant in the ACTA2 gene in the proband and in the affected siblings. The clinical history of this family highlights the difficulty of adopting effective prevention strategies in ACTA2 patients.


Assuntos
Actinas/genética , Aneurisma da Aorta Torácica/genética , Dissecção Aórtica/genética , Ruptura Aórtica/genética , Variação Genética , Adulto , Dissecção Aórtica/diagnóstico por imagem , Dissecção Aórtica/cirurgia , Aneurisma da Aorta Torácica/diagnóstico por imagem , Aneurisma da Aorta Torácica/cirurgia , Ruptura Aórtica/diagnóstico por imagem , Progressão da Doença , Feminino , Predisposição Genética para Doença , Hereditariedade , Heterozigoto , Humanos , Linhagem , Fenótipo
10.
Ann Thorac Surg ; 112(3): e157-e160, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-33497673

RESUMO

Heart transplantation in a recipient with giant left atrium is rare. To correct the mismatch between recipient and donor at the level of the left atrium, plication of the left atrium has been proposed. We report a case in which plication was not feasible owing to significant calcification of the left atrial wall and tight pericardial adhesions resulting from two previous sternotomies. Creating a pulmonary venous confluence allows orthotopic heart transplantation with any size of left atrium and conformation of pulmonary veins in cases of significant calcification or redo sternotomy.


Assuntos
Cardiomegalia/complicações , Átrios do Coração , Transplante de Coração/métodos , Veias Pulmonares/cirurgia , Idoso , Feminino , Humanos
11.
J Card Surg ; 35(5): 981-987, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32176383

RESUMO

BACKGROUND: After an emergent surgery for type A acute aortic syndrome, medical management is based on optimal blood pressure (BP) control. We assessed the prognostic significance of BP monitoring and its relationship with aortic morphology following type A acute aortic syndrome. METHODS: The data of 120 patients who underwent BP monitoring after a type A acute aortic syndrome from January 2005 to June 2016 were retrospectively collected. The first CT angiogram performed after surgery was used for the morphological analysis. RESULTS: The population included 79 males, with an overall mean age of 60 ± 12 years. Seven patients (5.8%) died during a median follow-up of 5.5 years. The median delay between BP monitoring and discharge was 3 (1-5) months. The mean 24-hour BP of the cohort was 127/73 mm Hg ± 10/17. During follow-up, different parameters of BP monitoring were not associated with the risk of aortic events. However, the diameter of the false lumen of the descending thoracic aorta was the best predictor associated with the risk of new aortic events during follow-up, particularly for the threshold of 28 mm or more (P < .001; Hazard ratio 4.7[2.7-8.2]). The diameter of the false lumen was associated with night-time systolic BP (P = .025; r = .2), 24-hour pulse pressure (P = .002; r = .28), and night-time pulse pressure (P = .008; r = .24). CONCLUSION: The risk of new aortic events following type A acute aortic syndrome is associated with the size of the residual false lumen, but not directly with BP parameters. Night-time BP parameters are associated with the size of the residual false lumen.


Assuntos
Aorta Torácica/diagnóstico por imagem , Aorta Torácica/patologia , Dissecção Aórtica/patologia , Dissecção Aórtica/fisiopatologia , Monitorização Ambulatorial da Pressão Arterial , Pressão Sanguínea , Idoso , Dissecção Aórtica/diagnóstico por imagem , Aorta , Angiografia por Tomografia Computadorizada , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Risco
12.
Ann Thorac Surg ; 110(3): 856-861, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32084372

RESUMO

BACKGROUND: The best valvular substitute remains controversial in young adults with active aortic valve endocarditis. The Ross procedure has gained interest because of its theoretical resistance to infection. We aimed to report our long-term outcomes of the Ross procedure in this indication. METHODS: Between March 1992 and January 2019, 511 patients underwent a Ross procedure in our institution. Among them, we included 38 patients who suffered from an active aortic valve infective endocarditis. The mean age was 33.9 ± 8.1 years. Six patients had emergent procedures and 17 patients had perivalvular involvement. A pulmonary autograft was implanted using the full root technique in 78.9% of patients. Median follow-up was 12 (interquartile range, 1.75-16.25) years. RESULTS: The hospital mortality rate was 5.3%. Estimated overall survival was 84.2% ± 6.6% at 10 years. There were 2 cases of recurrent endocarditis, both requiring reoperation. Six other patients required reoperation on an autograft or homograft. Estimated freedom from recurrent endocarditis or reoperation was 89.4% ± 5.9% at 10 years. CONCLUSIONS: In experienced centers, the Ross procedure is a reliable alternative to prosthetic or homograft valve replacement in young adults experiencing active aortic valve endocarditis, with a low operative risk and good long-term results.


Assuntos
Valva Aórtica/diagnóstico por imagem , Endocardite/cirurgia , Previsões , Implante de Prótese de Valva Cardíaca/efeitos adversos , Adolescente , Adulto , Valva Aórtica/cirurgia , Endocardite/diagnóstico , Endocardite/epidemiologia , Feminino , Seguimentos , França/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/cirurgia , Reoperação , Estudos Retrospectivos , Taxa de Sobrevida/tendências , Resultado do Tratamento , Adulto Jovem
13.
Interact Cardiovasc Thorac Surg ; 27(4): 512-519, 2018 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-29688455

RESUMO

OBJECTIVES: Radiation exposure is a concern for both patients and operators during transcatheter aortic valve implantation (TAVI). Efforts to reduce radiation dose are warranted. We aimed at investigating if per-operative advanced image processing can reduce patient and operator irradiation use during TAVI. METHODS: We performed a prospective single-centre observational study comparing patient and operator radiation exposure using standard fluoroscopy (control group) or a novel technology of live advanced fluoroscopic image processing (test group) among consecutive patients undergoing TAVI between August 2015 and April 2016. Patient irradiation (dose-area product, effective dose and air kerma), contrast media volume and clinical outcomes were assessed. RESULTS: Among 152 elderly [median age (interquartile range): 83 (78-87)] patients (n = 76 per group) undergoing TAVI, baseline clinical characteristics were similar between the control and test groups, except for a higher median EuroSCORE II (2.8% vs 2.3%, P = 0.02) and higher rate of TAVI for failing surgical bioprosthesis (11.8% vs 2.6%, P = 0.03) in the control group. The dose-area product was reduced in the test group: mean reduction of -27.5 Gy × cm2 [95% confidence intervals (CIs): 15.9-39.1, P < 0.001]. Furthermore, effective dose [mean reduction -6.5 (95% CI: 5.9-7.2) mSv, P < 0.001] and air kerma [mean reduction -167.5 (95% CI 163.4-177.3) mGy, P < 0.001] were lower in the test group. Fluoroscopy time, contrast volume and clinical outcomes were similar. CONCLUSIONS: Patient radiation exposure was significantly reduced using a novel live advanced fluoroscopy image processing with calcification enhancement and fusion of the virtual aortic annulus without compromising patient safety.


Assuntos
Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Calcinose/cirurgia , Fluoroscopia/métodos , Processamento de Imagem Assistida por Computador/métodos , Exposição à Radiação/prevenção & controle , Substituição da Valva Aórtica Transcateter/métodos , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/diagnóstico , Calcinose/diagnóstico , Feminino , Humanos , Masculino , Segurança do Paciente , Estudos Prospectivos , Fatores de Risco
14.
Acta Diabetol ; 54(6): 551-560, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28314924

RESUMO

AIMS: Calcific aortic valve disease (CAVD) affects 2-6% of the population over 65 years, and age, gender, smoking, overweight, dyslipidemia, diabetes contribute to the development of this disease. CAVD results, in part, from the osteoblast differentiation of human valvular interstitial cells (VICs). This study aims to elucidate the effects of leptin on osteoblast phenotype of VICs and the signalling pathways involved. METHODS: Patients who underwent aortic valve replacement for CAVD (n = 43) were included in this study. Patients with coronary artery disease (CAD) without CAVD (n = 129) were used as controls. RESULTS: Patients with CAVD had higher serum leptin concentrations than CAD patients (p = 0.002). Leptin was found in calcific aortic valves, with higher concentrations in calcified versus non-calcified zones (p = 0.01). Chronic leptin stimulation of human VICs enhanced alkaline phosphatase (ALP) activity and ALP, BMP-2 and RUNX2 expression and decreased osteopontin expression. Moreover, inhibiting Akt or ERK during leptin stimulation lowered the expression of osteoblast markers in VIC. CONCLUSIONS: Taken together, these findings indicate that leptin plays a critical role in CAVD development by promoting osteoblast differentiation of human aortic VICs in an Akt- and ERK-dependent manner. This study highlights the role of leptin in CAVD development, and further studies are needed to determine whether reducing circulating leptin levels or blocking leptin actions on VICs is efficient to slow CAVD progression.


Assuntos
Valva Aórtica/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Transdiferenciação Celular/efeitos dos fármacos , Leptina/farmacologia , Osteoblastos/efeitos dos fármacos , Osteoblastos/fisiologia , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/patologia , Estenose da Valva Aórtica/patologia , Doença da Válvula Aórtica Bicúspide , Biomarcadores/metabolismo , Calcinose/patologia , Estudos de Casos e Controles , Células Cultivadas , Feminino , Cardiopatias Congênitas/patologia , Doenças das Valvas Cardíacas/patologia , Humanos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Masculino , Pessoa de Meia-Idade , Proteína Oncogênica v-akt/metabolismo , Fenótipo , Transdução de Sinais/efeitos dos fármacos
15.
N Engl J Med ; 375(4): 335-44, 2016 Jul 28.
Artigo em Inglês | MEDLINE | ID: mdl-27464202

RESUMO

BACKGROUND: Postprocedural aortic regurgitation occurs in 10 to 20% of patients undergoing transcatheter aortic-valve replacement (TAVR) for aortic stenosis. We hypothesized that assessment of defects in high-molecular-weight (HMW) multimers of von Willebrand factor or point-of-care assessment of hemostasis could be used to monitor aortic regurgitation during TAVR. METHODS: We enrolled 183 patients undergoing TAVR. Patients with aortic regurgitation after the initial implantation, as identified by means of transesophageal echocardiography, underwent additional balloon dilation to correct aortic regurgitation. HMW multimers and the closure time with adenosine diphosphate (CT-ADP), a point-of-care measure of hemostasis, were assessed at baseline and 5 minutes after each step of the procedure. Mortality was evaluated at 1 year. A second cohort (201 patients) was studied to validate the use of CT-ADP in order to identify patients with aortic regurgitation. RESULTS: After the initial implantation, HMW multimers normalized in patients without aortic regurgitation (137 patients). Among the 46 patients with aortic regurgitation, normalization occurred in 20 patients in whom additional balloon dilation was successful but did not occur in the 26 patients with persistent aortic regurgitation. A similar sequence of changes was observed with CT-ADP. A CT-ADP value of more than 180 seconds had sensitivity, specificity, and negative predictive value of 92.3%, 92.4%, and 98.6%, respectively, for aortic regurgitation, with similar results in the validation cohort. Multivariable analyses showed that the values for HMW multimers and CT-ADP at the end of TAVR were each associated with mortality at 1 year. CONCLUSIONS: The presence of HMW-multimer defects and a high value for a point-of-care hemostatic test, the CT-ADP, were each predictive of the presence of aortic regurgitation after TAVR and were associated with higher mortality 1 year after the procedure. (Funded by Lille 2 University and others; ClinicalTrials.gov number, NCT02628509.).


Assuntos
Difosfato de Adenosina/sangue , Insuficiência da Valva Aórtica/diagnóstico , Estenose da Valva Aórtica/cirurgia , Complicações Pós-Operatórias/diagnóstico , Substituição da Valva Aórtica Transcateter , Fator de von Willebrand/análise , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/sangue , Estenose da Valva Aórtica/mortalidade , Biomarcadores/sangue , Feminino , Hemostasia/fisiologia , Humanos , Masculino , Análise Multivariada , Testes Imediatos , Complicações Pós-Operatórias/sangue , Curva ROC , Sensibilidade e Especificidade , Fator de von Willebrand/química
16.
Ann Thorac Surg ; 102(5): 1558-1564, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27262915

RESUMO

BACKGROUND: Obstructive sleep apnea syndrome (OSAS) is a risk factor for resistant arterial hypertension and aortic dilatation. We assessed the value of systematic screening for OSAS in patients soon after the onset of acute aortic syndrome (AAS). METHODS: Between January 2010 and June 2014, patients were prospectively screened for post AAS OSAS. The severity of OSAS was defined by the Apnea-Hypopnea Index (AHI) and the Oxygen Desaturation Index (ODI). Blood pressure control was assessed with 24-h ambulatory monitoring. RESULTS: The study population comprised 71 patients (males: 64.7%; median age [interquartile range]: 57 [49 to 64] years; type A AAS: 49.3%; type B AAS: 50.7%). According to the AHI, 58 patients (81.7%) had OSAS and 31 (43.6%) had severe OSAS. A prognostic analysis revealed that the descending thoracic false lumen dilatation rate rose significantly with the severity of OSAS (p = 0.0008 for the AHI and p = 0.0284 for the ODI). The median rate of increase was 7.5 (5 to 10) mm/year in the AHI greater than 30 events/h group and 5.0 (0 to 8) mm/year in the ODI greater than 30 events/h group. With regard to blood pressure control, the diastolic blood pressure varied as function of the ODI category (p = 0.0074). CONCLUSIONS: Our results suggest that systematic screening for post-ASS OSAS is of value. The false lumen dilatation rate appears to be related to the severity of OSAS. It remains to be seen whether treatment of OSAS would modify the false lumen dilatation rate.


Assuntos
Aorta Torácica/patologia , Aneurisma Aórtico/etiologia , Dissecção Aórtica/etiologia , Hipertensão/complicações , Apneia Obstrutiva do Sono/complicações , Adulto , Idoso , Dissecção Aórtica/diagnóstico por imagem , Dissecção Aórtica/fisiopatologia , Dissecção Aórtica/cirurgia , Aneurisma Aórtico/diagnóstico por imagem , Aneurisma Aórtico/fisiopatologia , Aneurisma Aórtico/cirurgia , Angiografia por Tomografia Computadorizada , Progressão da Doença , Feminino , Humanos , Masculino , Programas de Rastreamento , Pessoa de Meia-Idade , Oxigênio/sangue , Prevalência , Prognóstico , Recidiva , Fatores de Risco , Índice de Gravidade de Doença , Apneia Obstrutiva do Sono/sangue , Apneia Obstrutiva do Sono/diagnóstico , Apneia Obstrutiva do Sono/epidemiologia , Stents , Síndrome
19.
Diab Vasc Dis Res ; 12(4): 279-89, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25966737

RESUMO

This study aimed to investigate atherosclerotic mediators' expression levels in M1 and M2 macrophages and to focus on the influence of diabetes on M1/M2 profiles. Macrophages from 36 atherosclerotic patients (19 diabetics and 17 non-diabetics) were cultured with interleukin-1ß (IL-1ß) or IL-4 to induce M1 or M2 phenotype, respectively. The atherosclerotic mediators' expression was evaluated by quantitative reverse transcription-polymerase chain reaction (RT-PCR). The results showed that M1 and M2 macrophages differentially expressed mediators involved in proteolysis and angiogenesis processes. The proteolytic balance (matrix metalloproteinase-9 (MMP-9)/tissue inhibitor of metalloproteinase-1 (TIMP-1), MMP-9/plasminogen activator inhibitor-1 (PAI-1) and MMP-9/tissue factor pathway inhibitor-2 (TFPI-2) ratios) was higher in M1 versus M2, whereas M2 macrophages presented higher angiogenesis properties (increased vascular endothelial growth factor/TFPI-2 and tissue factor/TFPI-2 ratios). Moreover, M1 macrophages from diabetics displayed more important proangiogenic and proteolytic activities than non-diabetics. This study reveals that M1 and M2 macrophages could differentially modulate major atherosclerosis-related pathological processes. Moreover, M1 macrophages from diabetics display a deleterious phenotype that could explain the higher plaque vulnerability observed in these subjects.


Assuntos
Aterosclerose/genética , Doenças das Artérias Carótidas/genética , Doença da Artéria Coronariana/genética , Diabetes Mellitus Tipo 2/genética , Macrófagos/metabolismo , Neovascularização Patológica/genética , Idoso , Antígenos de Superfície/genética , Aterosclerose/complicações , Aterosclerose/diagnóstico por imagem , Doenças das Artérias Carótidas/complicações , Doenças das Artérias Carótidas/diagnóstico por imagem , Estudos de Casos e Controles , Moléculas de Adesão Celular Neuronais/genética , Angiografia Cerebral , Angiografia Coronária , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/diagnóstico por imagem , Diabetes Mellitus Tipo 2/complicações , Fator XIII/genética , Feminino , Regulação da Expressão Gênica , Glicoproteínas/genética , Humanos , Interleucina-10/genética , Interleucina-1beta/genética , Lectinas Tipo C/genética , Masculino , Receptor de Manose , Lectinas de Ligação a Manose/genética , Metaloproteinase 9 da Matriz/genética , Pessoa de Meia-Idade , Receptores de Orexina , Fenótipo , Inibidor 1 de Ativador de Plasminogênio/genética , Estudos Prospectivos , Proteólise , Receptores de Superfície Celular/genética , Receptores de Retorno de Linfócitos/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Inibidor Tecidual de Metaloproteinase-1/genética , Fator de Necrose Tumoral alfa/genética
20.
Int J Cardiol ; 194: 83-6, 2015 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-26011272

RESUMO

OBJECTIVES: There is currently a lack of recommendations about patients with pectus deformities requiring cardiac surgery. This study reports the results of our surgical strategy on this issue. METHODS: Eleven patients, from three centers treated over a 9-year period were included in this study. Pectus deformities were operated with a modified Ravitch procedure. In the case of pectus excavatum repair and concomitant cardiac surgery, subperichondrial resection of abnormal rib cartilages was always performed before the sternotomy and an easily removable retrosternal metallic strut was inserted at the end of the procedure ensuring anterior chest wall stability. During follow-up patients had to estimate their current appearance with a numeric scale ranging from 0 to 100. RESULTS: Mean age was 27 ± 9.4 years. Pectus excavatum was present in 8 patients and pectus arcuatum in 3. There were 6 Marfan syndrome patients. Nine patients had concomitant surgery and, 2 underwent pectus repair after a history of cardiac surgery. There was no operative mortality. In the case of concomitant surgery, heart exposure through median sternotomy was facilitated by abnormal rib cartilage resection. Median follow-up was 54 months (range 16.7-119.7). Mean cosmetic result evaluated by the patients was 97.3 (±2.5). CONCLUSIONS: In adults, concomitant scheduled surgery is reliable and offers excellent long-term cosmetic results. Moreover, it allows a better thoracic exposition with no added perioperative risk. The modified Ravitch technique seems more adequate in these patients as it can be used in all types of pectus deformities.


Assuntos
Procedimentos Cirúrgicos Cardíacos/métodos , Tórax em Funil/cirurgia , Procedimentos Cirúrgicos Torácicos/métodos , Adolescente , Adulto , Ecocardiografia/métodos , Feminino , Seguimentos , Tórax em Funil/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
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