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1.
BMC Public Health ; 22(1): 1629, 2022 08 29.
Artigo em Inglês | MEDLINE | ID: mdl-36038857

RESUMO

BACKGROUND: Recently, a new metabolic health (MH) definition was developed from NHANES-III. In the origin study, the definition may stratify mortality risks in people who are overweight or normal weight. We aimed to investigate the association between the new MH definition and all-cause mortality in a nonobese Chinese population. METHODS: The data were collected in 1992 and then again in 2007 from the same group of 1157 participants. The association between the new MH definition and all-cause mortality were analyzed by Cox regression models with overlap weighting according to propensity score (PS) as primary analysis. RESULTS: At baseline in 1992, 920 (79.5%) participants were categorized as MH, and 237 (20.5%) participants were categorized as metabolically unhealthy (MUH) based on this new definition. During a median follow-up of 15 years, all-cause mortality occurred in 17 (1.85%) participants in MH group and 13 (5.49%) in MUH group, respectively. In the crude sample, Kaplan-Meier analysis demonstrated a significantly higher all-cause mortality in MUH group when compared to MH group (log-rank p = 0.002), and MUH was significantly associated with increased all-cause mortality when compared to MH with HR at 3.04 (95% CI: 1.47-6.25, p = 0.003). However, Kaplan-Meier analysis with overlap weighting showed that the cumulative incidence of all-cause mortality was not significantly different between MH and MUH groups (adjusted p = 0.589). Furthermore, in the primary multivariable Cox analysis with overlap weighting, adjusted HR for all-cause mortality was 1.42 (95% CI: 0.49-4.17, p = 0.519) in MUH group in reference to MH group. Other additional PS analyses also showed the incidence of all-cause mortality was not significantly different between the two groups. CONCLUSION: The new MH definition may be not appropriate for mortality risk stratification in non-obese Chinese people. Further investigations are needed.


Assuntos
Obesidade , Sobrepeso , Índice de Massa Corporal , China/epidemiologia , Humanos , Inquéritos Nutricionais , Obesidade/epidemiologia , Sobrepeso/epidemiologia , Fatores de Risco
2.
J Card Surg ; 37(4): 1066-1068, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35060199

RESUMO

The combination of the atrial septal defect (ASD) and mitral stenosis (MS) is an unusual clinical entity called Lutembacher's syndrome. The hemodynamic interaction between the two cardiac malformations modifies the disease progression of each other. The symptom and progression of MS were thought to be slowed because of the existence of a left-to-right shunt that relived the blood flow through the mitral orifice. There is no consensus about caring this patient population for now. Here, we present a 58-year-old female with mild MS and coexistent ASD experiencing rapid progression of mitral valve lesions after percutaneous ASD closure. This case might identify the effect of ASD on delaying MS progression. From this point of view, MS and coexisting ASD should be evaluated and treated as a whole.


Assuntos
Comunicação Interatrial , Síndrome de Lutembacher , Estenose da Valva Mitral , Feminino , Comunicação Interatrial/complicações , Comunicação Interatrial/diagnóstico , Comunicação Interatrial/cirurgia , Hemodinâmica/fisiologia , Humanos , Síndrome de Lutembacher/complicações , Síndrome de Lutembacher/cirurgia , Pessoa de Meia-Idade , Valva Mitral/cirurgia , Estenose da Valva Mitral/complicações , Estenose da Valva Mitral/cirurgia
3.
Eur Radiol ; 31(8): 6220-6229, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34156556

RESUMO

OBJECTIVES: We sought to identify the impact of transcatheter aortic valve implantation (TAVI) on changes of fractional flow reserve computed tomography (FFRCT) values and the associated clinical impact. METHODS: A retrospective analysis was done with CT obtained pre-TAVI, prior to hospital discharge and at 1-year follow-up, which provided imaging sources for the calculation of FFRCT values based on an online platform. RESULTS: A total of 190 patients were enrolled. Patients with pre-procedural FFRCT value > 0.80 (i.e., negative) and ≤ 0.80 (i.e., positive) demonstrated a significantly opposite change in the value after TAVI (0.8798 vs. 0.8718, p < 0.001 and 0.7634 vs. 0.8222, p < 0.001, respectively). The history of coronary artery disease (CAD) was identified as an independent predictor for FFRCT changing from negative to positive after TAVI (odds ratio [OR] 2.927, 95% confidence interval [CI] 1.130-7.587, p = 0.027), with lesions more severely stenosed (OR 1.039, 95% CI 1.003-1.076, p = 0.034) and in left anterior descending coronary artery (LAD) (OR 3.939, 95% CI 1.060-14.637, p = 0.041) being prone to change. CONCLUSIONS: TAVI directly brings improvement in FFRCT values in patients with compromised coronary flow. Patients with a history of CAD, especially with lesions more severely stenosed and in LAD, were under risk of FFRCT changing from negative to positive after TAVI. KEY POINTS: •The effect of TAVI on coronary hemodynamics might be influenced by different ischemic severity and coronary territories reflected by FFRCT values. •As different FFRCT variations did not impact outcomes of TAVI patients, AS, but not coronary issues, may be the primary problem to affect, which needs further validation.


Assuntos
Doença da Artéria Coronariana , Estenose Coronária , Reserva Fracionada de Fluxo Miocárdico , Substituição da Valva Aórtica Transcateter , Angiografia por Tomografia Computadorizada , Angiografia Coronária , Doença da Artéria Coronariana/diagnóstico por imagem , Doença da Artéria Coronariana/cirurgia , Vasos Coronários/diagnóstico por imagem , Hemodinâmica , Humanos , Valor Preditivo dos Testes , Estudos Retrospectivos , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X
4.
BMC Cardiovasc Disord ; 21(1): 590, 2021 12 07.
Artigo em Inglês | MEDLINE | ID: mdl-34876008

RESUMO

BACKGROUND: Optimal projection is essential for valve deployment during transcatheter aortic valve implantation (TAVI). The purpose of this study was to propose an approach to predict optimal projection in TAVI candidates with different aortic valve anatomies. METHODS: 331 patients undergoing self-expanding TAVI were included and the so-called non-coronary cusp (NCC)-parallel technique was utilized, which generated the predicted projection by connecting NCC commissures on the transverse plane on the pre-procedural computed tomography images. RESULTS: 37.8% of the study cohort were bicuspid aortic valve (BAV) patients. Around 80% of both NCC-parallel views and final views were in the right anterior oblique (RAO) and caudal (CAU) quadrant. There was less than 5° change required from the NCC-parallel view to the final implanted view in 79% of tricuspid aortic valve (TAV) patients but only in 27% (13/48) of type 0 BAV patients with coronary arteries originated from the different cusps. After excluding the above mentioned BAV patients, 62.3% (48/77) of BAV patients needed less than 5° change to achieve optimal projection and only in 8 patients, the angular change was larger than 10° in either left/right anterior oblique or cranial/caudal direction. CONCLUSIONS: The NCC-parallel technique provides reliable prediction for optimal projection in self-expanding TAVI in all TAV and most BAV patients, with a vast majority of views in the RAO and CAU quadrant.


Assuntos
Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Doença da Válvula Aórtica Bicúspide/diagnóstico por imagem , Doença da Válvula Aórtica Bicúspide/cirurgia , Tomografia Computadorizada Multidetectores , Tomografia Computadorizada por Raios X , Substituição da Valva Aórtica Transcateter/instrumentação , Idoso , Idoso de 80 Anos ou mais , Pontos de Referência Anatômicos , Valva Aórtica/anormalidades , Tomada de Decisão Clínica , Feminino , Próteses Valvulares Cardíacas , Humanos , Masculino , Valor Preditivo dos Testes , Estudos Prospectivos , Desenho de Prótese
5.
Catheter Cardiovasc Interv ; 96(7): 1491-1497, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32400115

RESUMO

OBJECTIVE: We hypothesize that different degree of pre-existing aortic regurgitation (AR) may affect the presence of hypo-attenuated leaflet thickening (HALT) after transcatheter aortic valve replacement (TAVR). BACKGROUND: The mechanism of the presence of HALT post-TAVR is not fully understood. METHODS: We retrospectively evaluated the post-procedural multi-slice computed tomography (MSCT) before discharge for evidence of HALT. Patients were grouped according to the degree of pre-existing AR. Baseline, native anatomy and procedure details were compared, then multivariate regression was performed. RESULTS: MSCT analyzed was performed at a median of 6 days post-TAVR in 179 patients. HALT was detected in 10.6% of patients. After adjusting for variables that were significantly different between groups, pre-existing ≥ moderate AR was protective to the risk of HALT (OR 0.15, 95% CI 0.03-0.84, p = .03). Stratifying for factors that might explain the impact of pre-existing AR on HALT, patients with a small Sinus of Valsalva, non-eccentric remodeling and receiving a large bioprosthesis experienced a sevenfold higher risk for HALT (OR 7.16, 95% CI 2.05-25.08, p = .002). CONCLUSIONS: Patients underwent TAVR with pre-existing ≥ moderate AR appeared to experience a lower incidence of early HALT compared to those patients with less than moderate AR, which may be explained by a larger Sinus of Valsalva and a higher proportion of LV eccentric remodeling.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Estenose da Valva Aórtica/cirurgia , Valva Aórtica/cirurgia , Substituição da Valva Aórtica Transcateter , Idoso , Idoso de 80 Anos ou mais , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/fisiopatologia , Insuficiência da Valva Aórtica/diagnóstico por imagem , Insuficiência da Valva Aórtica/fisiopatologia , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/fisiopatologia , Feminino , Hemodinâmica , Humanos , Masculino , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores de Tempo , Substituição da Valva Aórtica Transcateter/efeitos adversos , Resultado do Tratamento , Função Ventricular Esquerda , Remodelação Ventricular
6.
Catheter Cardiovasc Interv ; 95 Suppl 1: 616-623, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31943783

RESUMO

OBJECTIVES: We evaluated the safety and usefulness of preparatory anatomical reshaping with a geometric hourglass-shaped balloon to optimize transcatheter aortic valve replacement (TAVR) outcomes in bicuspid aortic valve (BAV) stenosis. BACKGROUND: TAVR has been increasingly performed for BAV stenosis; however, technical challenges remain. Procedural results are suboptimal given unfavorable valvular anatomies. METHODS: Eligible patients with BAV stenosis were enrolled to undergo aortic valve predilatation with the hourglass-shaped TAV8 balloon before TAVR using the self-expandable Venus A-Valve. Procedural details and outcomes were compared to a sequential group of patients with BAV who underwent TAVR with the same device following preparatory dilatation using a cylindrical balloon. RESULTS: A total of 22 patients were enrolled in the TAV8 group and 53 were included in the control group. Valve downsizing was less common in the TAV8 group (36.4 vs. 67.9%; p = .012). Stable valve release and optimal implant depth were consistently achieved in the TAV8 group with no requirement for a second valve (0 vs. 17.0%; p = .039) and with higher device success rates (100.0 vs 77.4%; p = .014). Residual aortic regurgitation graded as ≥mild was less common in the TAV8 group (13.6 vs 45.3%; p = .009). Mortality was similar (0 vs. 3.8%; p = 1); no major/disabling stroke or conversion to open-heart surgery was seen in either group within 30 days. CONCLUSIONS: Compared with standard cylindrical balloon valvuloplasty, preparatory reshaping with the hourglass-shaped balloon before self-expandable TAVR in BAV was associated with significantly better procedural results and may encourage more promising outcomes.


Assuntos
Estenose da Valva Aórtica/cirurgia , Valvuloplastia com Balão/instrumentação , Doença da Válvula Aórtica Bicúspide/cirurgia , Próteses Valvulares Cardíacas , Substituição da Valva Aórtica Transcateter/instrumentação , Idoso , Idoso de 80 Anos ou mais , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/mortalidade , Estenose da Valva Aórtica/fisiopatologia , Valvuloplastia com Balão/efeitos adversos , Valvuloplastia com Balão/mortalidade , Doença da Válvula Aórtica Bicúspide/diagnóstico por imagem , Doença da Válvula Aórtica Bicúspide/mortalidade , Doença da Válvula Aórtica Bicúspide/fisiopatologia , Feminino , Humanos , Masculino , Projetos Piloto , Complicações Pós-Operatórias/etiologia , Fatores de Risco , Substituição da Valva Aórtica Transcateter/efeitos adversos , Substituição da Valva Aórtica Transcateter/mortalidade , Resultado do Tratamento
7.
Int Heart J ; 61(5): 1056-1058, 2020 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-32921678

RESUMO

An 84-year-old woman with hypertension, Alzheimer's disease, and chronic kidney disease presented with fever and was diagnosed with corona virus disease 2019 (COVID-19). During the hospitalization, she experienced unexpected sinus bradycardia with prolonged QTc, which was thought to be closely related to the short-term use of hydroxychloroquine (HCQ), an old drug used to treat malaria and autoimmune diseases, but now used against COVID-19. The cardiac side effects of HCQ were rare, seen with short-term and low-dose use. With the COVID-19 pandemic, this case alerts clinicians to be aware of the arrhythmogenic effects of HCQ when it is used as an antiviral drug, especially in patients with preexisting cardiovascular diseases.


Assuntos
Betacoronavirus , Bradicardia/induzido quimicamente , Infecções por Coronavirus/tratamento farmacológico , Hidroxicloroquina/efeitos adversos , Síndrome do QT Longo/induzido quimicamente , Pneumonia Viral/tratamento farmacológico , Idoso de 80 Anos ou mais , COVID-19 , Feminino , Humanos , Pandemias , SARS-CoV-2 , Tratamento Farmacológico da COVID-19
8.
Int Heart J ; 60(5): 1189-1191, 2019 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-31447465

RESUMO

The first onset of cardiac event of long QT syndrome (LQTS) was at young age and caused by emotional or physical triggers. We presented a 64-year-old woman who experienced recurrent ventricular arrhythmia after hemodialysis initiation because of end-stage renal disease. Persistent prolonged QTc interval and diagnosis of inherited LQT2 were missed at her first 3 years of hemodialysis. The patient was beta-blocker nonresponder for ventricular arrhythmias suppression and experienced multiple ICD discharge. We reported an inherited LQT2 case with uncommon clinical manifestations and the successful experience of mexiletine use in such a patient.


Assuntos
Falência Renal Crônica/terapia , Síndrome do QT Longo/genética , Mexiletina/uso terapêutico , Diálise Renal/efeitos adversos , Taquicardia Ventricular/tratamento farmacológico , Taquicardia Ventricular/etiologia , Antiarrítmicos/uso terapêutico , Eletrocardiografia/métodos , Feminino , Seguimentos , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/diagnóstico , Síndrome do QT Longo/diagnóstico , Pessoa de Meia-Idade , Doenças Raras , Recidiva , Diálise Renal/métodos , Medição de Risco , Taquicardia Ventricular/diagnóstico , Resultado do Tratamento
9.
Ann Noninvasive Electrocardiol ; 20(6): 542-53, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-25664419

RESUMO

BACKGROUND: Changes in the ECG indicator PtfV1 reflect left atrial pressure and left ventricular diastolic function in NSTE-ACS patients during hospitalization. The value of PtfV1 in the evaluation of long-term prognosis in NSTE-ACS is still not clear. The purpose of this study was to investigate the relationship between the dynamic changes in P-wave terminal force in lead V1(PtfV1) in the ECG of non-ST-segment elevation acute coronary syndrome (NSTE-ACS) patients during hospitalization and the long-term major adverse cardiovascular events (MACEs) of patients. METHODS: A total of 595 patients who received coronary angiography and were confirmed as NSTE-ACS in the coronary heart disease database of Department of Cardiology of West China Hospital were continuously included. The PtfV1 and other clinical data at admission and discharge were collected and dynamically observed. The end events of follow-up observation were MACEs. RESULTS: Follow-up was performed on 595 patients for 24.71 ± 1.95 months. There were 127 PtfV1(+) and 468 PtfV1(-) at admission, and the incidences of MACEs were 14.2% and 11.1%, respectively (P = 0.731). Compared with patients with persistent PtfV1(-) ECG at admission and discharge, 53 patients with persistent PtfV1(+) ECG at admission and discharge had increased risk for MACEs (HR: 2.221, 95% CI: 1.072-4.601, P = 0.032); 94 patients with new PtfV1(+) ECG at discharge also had significantly increased risk for MACEs (HR: 2.993, 95% CI: 1.660-5.397, P = 0.000). CONCLUSIONS: NSTE-ACS patients with persistent PtfV1(+) ECG indicators at admission and discharge and new PtfV1(+) at discharge had significantly increased risk of MACEs.


Assuntos
Síndrome Coronariana Aguda/diagnóstico , Eletrocardiografia , Idoso , Doenças Cardiovasculares/diagnóstico , Feminino , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos
10.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 46(3): 399-402, 2015 May.
Artigo em Zh | MEDLINE | ID: mdl-26121861

RESUMO

OBJECTIVE: To observe the effect of nuclear factor erythroid 2-related factor 2 (Nrf2) agonist on the apoptosis of alveolar cell induced by hyperoxia and to explore whether Nrf2 activation could protect neonatal rats from hyperoxia induced lung injury. METHODS: 90 neonatal Sprague-Dawley rats were randomized into room air group (FiO2 =21%, N group), hyperoxia group (0 group) and Nrf2 group (n=30 each). Neonatal rats in the 0 group and Nrf2 group received saline 0. 2 mL and Nrf2 agonist 30 mg/kg respectively at the first and second day after birth, and were exposed in high concentration oxygen (95%) for 4 d. N group rats were fed in room air. The apoptotic index (AI) and Nrf2 expression of lung tissue were detected by TUNEL and immunohistochemistry staining respectively. RESULTS: Compared with 0 group (28. 8% ± 3. 0%), the AI of alveolar. cell was lower in N group (0. 7%±0. 6%) and Nrf2 group (7. 2% ± 0. 8%) (P<0. 01). The expression of Nrf2 was significantly higher in 0 group (926. 80 ± 130. 51) and Nrf2 group (1038. 40±151. 12) than that in N group (30. 03±9. 99) (P<0. 01). CONCLUSION: Nrf2 activation could reduce the alveolar cellular apoptosis and protect neonatal rats from hyperoxia induced lung injury.


Assuntos
Hiperóxia , Lesão Pulmonar , Pulmão/efeitos dos fármacos , Fator 2 Relacionado a NF-E2/agonistas , Células Epiteliais Alveolares/citologia , Animais , Animais Recém-Nascidos , Apoptose , Pulmão/fisiopatologia , Ratos , Ratos Sprague-Dawley
11.
Eur Heart J Digit Health ; 5(3): 219-228, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38774374

RESUMO

Aims: Permanent pacemaker implantation and left bundle branch block are common complications after transcatheter aortic valve replacement (TAVR) and are associated with impaired prognosis. This study aimed to develop an artificial intelligence (AI) model for predicting conduction disturbances after TAVR using pre-procedural 12-lead electrocardiogram (ECG) images. Methods and results: We collected pre-procedural 12-lead ECGs of patients who underwent TAVR at West China Hospital between March 2016 and March 2022. A hold-out testing set comprising 20% of the sample was randomly selected. We developed an AI model using a convolutional neural network, trained it using five-fold cross-validation and tested it on the hold-out testing cohort. We also developed and validated an enhanced model that included additional clinical features. After applying exclusion criteria, we included 1354 ECGs of 718 patients in the study. The AI model predicted conduction disturbances in the hold-out testing cohort with an area under the curve (AUC) of 0.764, accuracy of 0.743, F1 score of 0.752, sensitivity of 0.876, and specificity of 0.624, based solely on pre-procedural ECG images. The performance was better than the Emory score (AUC = 0.704), as well as the logistic (AUC = 0.574) and XGBoost (AUC = 0.520) models built with previously identified high-risk ECG patterns. After adding clinical features, there was an increase in the overall performance with an AUC of 0.779, accuracy of 0.774, F1 score of 0.776, sensitivity of 0.794, and specificity of 0.752. Conclusion: Artificial intelligence-enhanced ECGs may offer better predictive value than traditionally defined high-risk ECG patterns.

12.
Prep Biochem Biotechnol ; 43(2): 197-206, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23302107

RESUMO

Currently, flow cytometry and immunomagnetic bead purification are the most commonly used cell sorting methods. We performed this study because there are few reports that directly compare the sorting efficiency and influence on cell functions of these two methods. The in vitro cultured third-generation bone marrow mesenchymal cells from newborn Sprague-Dawley rats were sorted and purified using sterile flow cytometry and immunomagnetic beads to obtain CXCR4-positive bone marrow mesenchymal stem cells (CXCR4(+)-MSCs). The yield and purity (detected by flow cytometry), in vitro viability (detected by the MTT method), and in vitro chemotactic capacity (detected by stromal cell-derived factor-1α [SDF-1α] induction) of sorted target cells using these two methods were compared. The purity of CXCR4(+)-MSCs obtained using sterile flow cytometry was higher than that using immunomagnetic bead purification. The MTT method and growth curves showed that the viability of cells was lower and that the amplification rate of cells decreased using sterile flow cytometry, whereas the cell viability was higher after cells were sorted using immunomagnetic beads (p < 0.01). The number of CXCR4(+)-MSCs cells that underwent chemotactic migration induced by SDF-1α after sorting using sterile flow cytometry was smaller than that using immunomagnetic bead purification (15.60 ± 1.14 vs. 26.40 ± 1.67, p < 0.01). Although the purity of CXCR4(+)-MSCs sorted by the immunomagnetic bead purification method was lower than that by sterile flow cytometry, the influence on cell activity of the former was smaller, including improved cell viability and improved SDF-1α -induced chemotactic migration in vitro.


Assuntos
Citometria de Fluxo/métodos , Separação Imunomagnética/métodos , Células-Tronco Mesenquimais/citologia , Animais , Biomarcadores/metabolismo , Medula Óssea/metabolismo , Contagem de Células/métodos , Movimento Celular , Sobrevivência Celular , Células Cultivadas , Quimiocina CXCL12 , Quimiotaxia , Células-Tronco Mesenquimais/metabolismo , Cultura Primária de Células , Ratos , Ratos Sprague-Dawley , Receptores CXCR4/metabolismo , Reprodutibilidade dos Testes , Sensibilidade e Especificidade
13.
Zhong Yao Cai ; 36(6): 900-2, 2013 Jun.
Artigo em Zh | MEDLINE | ID: mdl-24380271

RESUMO

OBJECTIVE: To study the macroscopic and microscopic characteristics of Zhuang medicine Tetrastigma planicaule. METHODS: Macroscopic and microscopic identification were studied. RESULTS: The microscopic characteristics were significant. The root had more than 10 layers of cork cells arranging in line. The starch grain and calcium oxalate cluster crystals distributed in the phloem parenchymas, and mucilage cells scattered in the cortex of the stem. There were 8 vascular bundles in the vein of leaves. CONCLUSION: This study provides a scientific basis for the identification and utilizing of Tetrastigma planicaule.


Assuntos
Folhas de Planta/anatomia & histologia , Raízes de Plantas/anatomia & histologia , Plantas Medicinais/anatomia & histologia , Vitaceae/anatomia & histologia , Microscopia , Farmacognosia , Folhas de Planta/citologia , Folhas de Planta/ultraestrutura , Raízes de Plantas/citologia , Raízes de Plantas/ultraestrutura , Caules de Planta/anatomia & histologia , Caules de Planta/citologia , Caules de Planta/ultraestrutura , Plantas Medicinais/citologia , Plantas Medicinais/ultraestrutura , Controle de Qualidade , Vitaceae/citologia , Vitaceae/ultraestrutura
14.
BMJ Open ; 13(12): e078061, 2023 12 18.
Artigo em Inglês | MEDLINE | ID: mdl-38110378

RESUMO

INTRODUCTION: Decisions regarding the optimal timing of intervention for asymptomatic aortic stenosis (AS) are controversial. The study aims to identify potential risk factors for asymptomatic patients with severe AS that are associated with worse prognosis and to evaluate the benefits of early interventions for asymptomatic patients presenting with one or more additional risk factors. METHODS AND ANALYSIS: This is a non-interventional, prospective, open-label, multicentre registry study across China. A total of 1000 patients will be enrolled and categorised as symptomatic or asymptomatic. The primary endpoint is the occurrence of all-cause mortality, stroke, acute myocardial infarction and heart failure-related hospitalisation at 1-year follow-up. In asymptomatic severe AS patients presenting with one or more risk factors, the occurrence rate of the primary endpoint between those who undergo transcatheter aortic valve replacement (TAVR) and those who do not will be compared. We will also compare the occurrence rate of the primary endpoint for asymptomatic severe AS patients with additional risk factors who undergo TAVR with those presenting with symptoms. This study is believed to provide additional evidence to help clinicians identify and refer severe AS patients who are asymptomatic but present with additional risk factors for early intervention of TAVR. ETHICS AND DISSEMINATION: The study protocol has been approved by the local ethics committee of each participating site: West China Hospital, Sichuan University; Sir Run Run Shaw Hospital, Zhejiang University School of Medicine; Second Hospital of Hebei Medical University; Tianjin Chest Hospital; and First Affiliated Hospital of Nanchang University. All participants will provide written informed consent. Study results will be published through academic conferences and peer-reviewed journals. TRIAL REGISTRATION: This study was registered at the Chinese Clinical Trial Registry (https:// www.chictr.org.cn), with the registration number ChiCTR2200064853.


Assuntos
Estenose da Valva Aórtica , Substituição da Valva Aórtica Transcateter , Humanos , Estenose da Valva Aórtica/cirurgia , Estudos Multicêntricos como Assunto , Estudos Prospectivos , Sistema de Registros , Fatores de Risco , Substituição da Valva Aórtica Transcateter/efeitos adversos , Resultado do Tratamento
15.
J Clin Med ; 12(15)2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37568469

RESUMO

The snare-assisted technique has been described to facilitate transcatheter aortic valve replacement (TAVR) delivery system advancement in complex aortic anatomies. However, the evidence is limited to case reports. To evaluate the safety profile of the snare-facilitated approach and its impact on self-expanding (SE) TAVR outcomes, we collected consecutive patients who underwent transfemoral SE-TAVR for aortic stenosis, using propensity score matching (PSM) separately in tricuspid and type-0 and type-1 bicuspid aortic valve morphology between the snare and non-snare groups. In 766 patients, despite the snare group having significantly larger annulus angulation and maximal ascending aortic diameter, both groups achieved comparable 30-day device success rates, regardless of first-generation or new-generation valve use. After PSM, the snare group had a significantly lower new permanent pacemaker implantation rate among 193 type-0 patients (3.3% vs. 18.3%, p = 0.01). The ipsilateral group used new-generation valves less frequently (23.0% vs. 75.4%, p < 0.001), but there were no significant inter-group differences in procedure-related events, except for a lower incidence of PVL ≥ mild in the ipsilateral group (14.9% vs. 32.3%, p = 0.01). In conclusion, the snare-assisted technique appears useful in SE-TAVR with angulated aortic root anatomy, and the benefits were comparable between ipsilateral and contralateral snare techniques.

16.
Eur J Prev Cardiol ; 30(2): 191-202, 2023 01 24.
Artigo em Inglês | MEDLINE | ID: mdl-36378543

RESUMO

AIMS: Inspiratory muscle training (IMT) can increase the strength or endurance of the diaphragm and accessory muscles of inspiration, yet there is no evidence that endorses the role of IMT in patients of transcatheter aortic valve replacement (TAVR). This study for the first time tested the effects of IMT plus usual cardiac rehabilitation (CR) function in patients after TAVR. METHODS AND RESULTS: A double-blinded, randomized controlled, single-centre clinical trial was undertaken. Participants who had a confirmed diagnosis of valve heart disease and were clinically stable after TAVR were recruited and received a CR programme during the hospital stay. A total of 96 patients were recruited and randomly assigned to the IMT + CR group (n = 48) or the CR group (n = 48) in a 1:1 ratio. The group difference in the primary outcome, the 6-min walk distance at the discharge of the hospital, significantly favoured the IMT + CR group (mean difference -33.52, 95% CI: -64.42 to -2.62, P = 0.034). The significant difference was maintained at the 1-month and 3-month follow-ups (mean difference: 41.51, 95% CI: 1.82-81.21, P = 0.041). In addition, the mean hospital stays of subjects in the IMT + CR group was 11 days, which was significantly shorter than the 12.5 days in the CR group (P = 0.016). Sensitivity analysis using per-protocol analysis supported these findings. No adverse treatment-related events were reported. CONCLUSION: Compared with usual CR, IMT plus CR can effectively improve exercise endurance, pulmonary ventilation function, and inspiratory muscle strength in patients after TAVR and shorten the length of hospital stay.


Assuntos
Substituição da Valva Aórtica Transcateter , Humanos , Substituição da Valva Aórtica Transcateter/efeitos adversos , Exercícios Respiratórios/métodos , Músculos Respiratórios , Respiração , Pulmão , Resultado do Tratamento , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia
17.
Circ Cardiovasc Interv ; 16(12): e013083, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37846559

RESUMO

BACKGROUND: Data concerning the outcomes of transcatheter aortic valve replacement in type 0 bicuspid aortic stenosis (AS) are scarce. The study aims to compare the outcomes of transcatheter aortic valve replacement for AS in patients with type 0 bicuspid, type 1 bicuspid, and tricuspid aortic valve anatomy. METHODS: We enrolled consecutive patients undergoing transcatheter aortic valve replacement for severe AS between 2012 and 2022 in this single-center retrospective cohort study. The primary outcome was mortality, while secondary outcomes included in-hospital complications such as stroke and pacemaker implantation and transcatheter heart valve hemodynamic performance. RESULTS: The number of patients with AS with type 0 bicuspid, type 1 bicuspid, and tricuspid aortic valve anatomy was 328, 302, and 642, respectively. Self-expanding transcatheter heart valves were used in the majority of patients (n=1160; 91.4%). In the matched population, differences in mortality (30 days: 4.2% versus 1.7% versus 1.7%, Poverall=0.522; 1 year: 10% versus 2.3% versus 6.2%, Poverall=0.099) and all stroke (30 days: 1.0% versus 0.9% versus 0.0%, Poverall=0.765; 1 year: 1.4% versus 1.6% versus 1.3%, Poverall=NS) were nonsignificant, and the incidence of overall in-hospital complications was comparable among groups. Ascending aortic diameter was the single predictor of 1-year mortality in type 0 bicuspid patients (hazard ratio, 1.59 [95% CI, 1.03-2.44]; P=0.035). The proportion of patients with a mean residual gradient ≥20 mm Hg was the highest in those with type 0 bicuspid anatomy, although the need for permanent pacemaker implantation was the lowest in this group. CONCLUSIONS: Major clinical outcomes of transcatheter aortic valve replacement for AS in patients with type 0 bicuspid, type 1 bicuspid, and tricuspid aortic valve anatomy are equivalent at short- and mid-term follow-up. These observations merit further exploration in prospective international registries and randomized controlled trials.


Assuntos
Estenose da Valva Aórtica , Doenças das Valvas Cardíacas , Acidente Vascular Cerebral , Substituição da Valva Aórtica Transcateter , Humanos , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Substituição da Valva Aórtica Transcateter/efeitos adversos , Estudos Prospectivos , Estudos Retrospectivos , Doenças das Valvas Cardíacas/diagnóstico por imagem , Doenças das Valvas Cardíacas/cirurgia , Resultado do Tratamento , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/cirurgia , Estenose da Valva Aórtica/etiologia , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/cirurgia
18.
Clin Cardiol ; 46(1): 84-91, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36448412

RESUMO

BACKGROUND: Renal and liver dysfunctions are risk factors for mortality in patients with severe aortic stenosis (AS). Transcatheter aortic valve implantation (TAVI) has the potential to break the vicious cycle between AS and hepatorenal dysfunction by relieving aortic valve obstruction. HYPOTHESIS: A part of patients can derive hepatorenal function improvement from TAVI, and this noncardiac benefit improves the intermediate-term outcomes. METHODS: We developed this retrospective cohort study in 439 consecutive patients undergoing TAVI and described the dynamic hepatorenal function assessed by model for end-stage liver disease model for end-stage liver disease (MELD)-XI score in subgroups. The endpoint was 2-year all-cause mortality. RESULTS: Receiver-operating characteristic analysis showed that the baseline MELD-XI score of 10.71 was the cutoff point. A high MELD-XI score (>10.71) at baseline was an independent predictor of the 2-year mortality hazard ratio (HR: 2.65 [1.29-5.47], p = .008). After TAVI, patients with irreversible high MELD-XI scores had a higher risk of 2-year mortality than patients who improved from high to low MELD-XI scores (HR: 2.50 [1.06-5.91], p = .03). Factors associated with reversible MELD-XI scores improvement were low baseline MELD-XI scores (≤12.00, odds ratio [OR]: 2.02 [1.04-3.94], p = .04), high aortic valve peak velocity (≥5 m/s, OR: 2.17 [1.11-4.24], p = .02), and low body mass index (≤25 kg/m2 , OR: 2.73 [1.25-5.98], p = .01). CONCLUSION: High MELD-XI score at baseline is an independent predictor for 2-year mortality. Patients with hepatorenal function improvement after TAVI have better outcomes. For patients with irreversible hepatorenal dysfunction after TAVI, further optimization of the subsequent treatment after TAVI is needed to improve the outcomes.


Assuntos
Estenose da Valva Aórtica , Doença Hepática Terminal , Substituição da Valva Aórtica Transcateter , Humanos , Prognóstico , Substituição da Valva Aórtica Transcateter/efeitos adversos , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/cirurgia , Doença Hepática Terminal/complicações , Resultado do Tratamento , Estudos Retrospectivos , Alta do Paciente , Índice de Gravidade de Doença , Fatores de Risco , Estenose da Valva Aórtica/complicações , Estenose da Valva Aórtica/cirurgia
20.
Diabetes Res Clin Pract ; 184: 109213, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35085646

RESUMO

AIM: To investigate the predictive values of the new metabolic health (MH) definition for future diabetes in a nonobese Chinese population, compared with the MH definition from metabolic syndrome (MetS). METHODS: The data were collected in 1992 and then again in 2007 from the same group of 653 participants. The risk assessment of the new MH definition and the MH definition from MetS for future diabetes was performed by Cox regression analysis with overlap weighting as the primary analysis. RESULTS: During the follow-up, 62 participants were diagnosed with diabetes. In the primary analysis with overlap weighting, there was no significant association between new MH and diabetes (HR: 1.12; 95% CI: 0.45-2.78, p = 0.803); conversely, based on the MH definition from MetS, the participants with MH were less likely to have had diabetes than the participants with MUHs (HR: 0.41; 95% CI: 0.22-0.78, p = 0.007). Furthermore, other analysis methods also confirmed the reproducibility of abovementioned results. In addition, sensitivity analysis excluding participants with prediabetes also demonstrated similar results with the primary analysis. CONCLUSION: In contrast to the previous MH definition from MetS, the new MH definition was not a reliable predictor for future diabetes in the nonobese Chinese population.


Assuntos
Diabetes Mellitus , Síndrome Metabólica , China/epidemiologia , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/epidemiologia , Humanos , Síndrome Metabólica/diagnóstico , Síndrome Metabólica/epidemiologia , Reprodutibilidade dos Testes , Medição de Risco , Fatores de Risco
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