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AIMS: As transcatheter mitral valve (MV) interventions are expanding and more device types and sizes become available, a tool supporting operators in preprocedural planning and the clinical decision-making process is highly desirable. We sought to develop a finite element (FE) computational simulation model to predict results of transcatheter edge-to-edge (TEER) interventions. METHODS AND RESULTS: We prospectively enrolled patients with secondary mitral regurgitation (MR) referred for a clinically indicated TEER. Three-dimensional (3D) transesophageal echocardiograms performed at the beginning of the procedure were used to perform the simulation. On the 3D dynamic model of the MV that was first obtained, we simulated the clip implantation using the same clip(s) type, size, number, and implantation location that was used during the intervention. The 3D model of the MV obtained after simulation of the clip implantation was compared to the clinical results obtained at the end of the intervention. We analyzed the degree and location of residual MR and the shape and area of the diastolic mitral valve area. We performed computational simulation on 5 patients. Overall, the simulated models predicted well the degree and location of the residual regurgitant orifice(s) but tended to underestimate the diastolic mitral orifice area. CONCLUSIONS: In this proof-of-concept study, we present preliminary results on our algorithm simulating clip implantation in 5 patients with functional MR. We show promising results regarding the feasibility and accuracy in terms of predicting residual MR and the need to improve the estimation of the diastolic mitral valve area.
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AIMS: Tricuspid regurgitation (TR) is commonly observed in patients with severe left-sided valvular heart disease (VHD). This study sought to assess TR frequency, management and outcome in this population. METHODS AND RESULTS: Among 6883 patients with severe native left-sided VHD or previous left-sided valvular intervention enrolled in the EURObservational Research Programme prospective VHD II survey, moderate or severe TR was very frequent in patients with severe mitral VHD (30% when mitral stenosis, 36% when mitral regurgitation [MR]), especially in patients with secondary MR (46%), and rare in patients with severe aortic VHD (4% when aortic stenosis, 3% when aortic regurgitation). An increase in TR grade was associated with a more severe clinical presentation and a poorer 6-month survival (p < 0.0001). Rates of concomitant tricuspid valve (TV) intervention at the time of left-sided heart valve surgery were high at the time of mitral valve surgery (50% when mitral stenosis, 41% when MR). Concordance between class I indications (patients with severe TR) for concomitant TV surgery at the time of left-sided valvular heart surgery according to guidelines and real-practice decision-making was very good (88% overall, 95% in patients operated on for MR). CONCLUSION: In this large international prospective survey among patients with severe left-sided VHD, moderate/severe TR was frequent in patients with mitral valve disease and was associated with a poorer outcome as TR grade increased. In patients with severe TR, compliance to guidelines for class I indications for concomitant TV surgery at the time of left-sided heart valve surgery was very good.
Subject(s)
Severity of Illness Index , Tricuspid Valve Insufficiency , Humans , Tricuspid Valve Insufficiency/epidemiology , Tricuspid Valve Insufficiency/diagnosis , Male , Female , Europe/epidemiology , Aged , Prospective Studies , Middle Aged , Mitral Valve Insufficiency/epidemiology , Mitral Valve Insufficiency/diagnosis , Mitral Valve Insufficiency/surgery , Heart Valve Diseases/epidemiology , Heart Valve Diseases/diagnosis , Tricuspid ValveABSTRACT
BACKGROUND: Mitral valve-in-valve (ViV) is associated with suboptimal hemodynamics and rare left ventricular outflow tract (LVOT) obstruction. OBJECTIVES: This study aimed to determine whether device position and asymmetry are associated with these outcomes. METHODS: Patients undergoing SAPIEN 3 (Edwards Lifesciences) mitral ViV included in the VIVID (Valve-in-Valve International Data) Registry were studied. Clinical endpoints are reported according to Mitral Valve Academic Research Consortium definitions. Residual mitral valve stenosis was defined as mean gradient ≥5 mm Hg. Depth of implantation (percentage of transcatheter heart valve [THV] atrial to the bioprosthesis ring) and asymmetry (ratio of 2 measures of THV height) were evaluated. RESULTS: A total of 222 patients meeting the criteria for optimal core lab evaluation were studied (age 74 ± 11.6 years; 61.9% female; STS score = 8.3 ± 7.1). Mean asymmetry was 6.2% ± 4.4%. Mean depth of implantation was 19.0% ± 10.3% atrial. Residual stenosis was common (50%; mean gradient 5.0 ± 2.6 mm Hg). LVOT obstruction occurred in 7 cases (3.2%). Implantation depth was not a predictor of residual stenosis (OR: 1.19 [95% CI: 0.92-1.55]; P = 0.184), but more atrial implantation was protective against LVOT obstruction (0.7% vs 7.1%; P = 0.009; per 10% atrial, OR: 0.48 [95% CI: 0.24-0.98]; P = 0.044). Asymmetry was found to be an independent predictor of residual stenosis (per 10% increase, OR: 2.30 [95% CI: 1.10-4.82]; P = 0.027). CONCLUSIONS: Valve stenosis is common after mitral ViV. Asymmetry was associated with residual stenosis. Depth of implantation on its own was not associated with residual stenosis but was associated with LVOT obstruction. Technical considerations to reduce postdeployment THV asymmetry should be considered.
Subject(s)
Atrial Fibrillation , Bioprosthesis , Heart Valve Prosthesis Implantation , Heart Valve Prosthesis , Humans , Female , Middle Aged , Aged , Aged, 80 and over , Male , Mitral Valve/diagnostic imaging , Mitral Valve/surgery , Heart Valve Prosthesis Implantation/adverse effects , Constriction, Pathologic/etiology , Treatment Outcome , Cardiac Catheterization/adverse effects , Hemodynamics , Registries , Prosthesis DesignABSTRACT
BACKGROUND: Differences in procedural success rates have been proposed to explain the divergent results between the MITRA-FR trial (Percutaneous Repair with the MitraClip Device for Severe Functional/Secondary Mitral Regurgitation) and the COAPT trial (Cardiovascular Outcomes Assessment of the MitraClip Percutaneous Therapy for Heart Failure Patients with Functional Mitral Regurgitation). AIM: To examine whether MITRA-FR patients who had successful clip implantation achieved a better outcome than the control group. METHODS: Based on the per protocol population of MITRA-FR, we compared the outcome in 71 patients in whom optimal clip implantation was achieved (group 1: mitral regurgitation grade ≤ 1 + at discharge) with that in 23 patients with non-optimal clip implantation (group 2: mitral regurgitation grade ≥ 2 + at discharge) and that in 137 patients in the control group (group 3). The primary endpoint was all-cause death or unplanned hospitalization for heart failure at 24 months. RESULTS: Event-free survival was not different across the groups (42±6% in group 1, 30±10% in group 2 and 31±4% in group 3; log-rank P=0.32). In multivariable analyses, after adjustment for age, sex, rhythm, aetiology, left ventricular ejection fraction and mitral regurgitation severity, group was not associated with variations in outcome: using Group 3 as reference, hazard ratio 0.86, 95% confidence interval 0.58-1.27 (P=0.43) in group 1; and hazard ratio 0.98 95% confidence interval 0.54-1.76 (P=0.94) in group 2. CONCLUSIONS: The clinical outcome of patients in whom optimal procedural result was achieved at discharge was not different compared with the control group. Our results do not support the hypothesis that the differences in rates of residual mitral regurgitation at discharge between MITRA-FR and COAPT explain the divergent results between the two trials.
Subject(s)
Heart Failure , Heart Valve Prosthesis Implantation , Mitral Valve Insufficiency , Humans , Mitral Valve Insufficiency/diagnostic imaging , Mitral Valve Insufficiency/surgery , Mitral Valve Insufficiency/etiology , Heart Valve Prosthesis Implantation/adverse effects , Heart Valve Prosthesis Implantation/methods , Stroke Volume , Ventricular Function, Left , Treatment Outcome , Heart Failure/diagnosis , Heart Failure/therapy , Heart Failure/complicationsABSTRACT
AIMS: The respective roles of oral anticoagulation or antiplatelet therapy following transcatheter aortic valve implantation (TAVI) remain debated. ATLANTIS is an international, randomized, open-label, superiority trial comparing apixaban to the standard of care. METHODS AND RESULTS: After successful TAVI, 1500 patients were randomized (1:1) to receive apixaban 5â mg (2.5â mg if impaired renal function or concomitant antiplatelet therapy) (n = 749) twice daily, or standard of care (n = 751). Randomization was stratified by the need for chronic anticoagulation therapy. Standard-of-care patients received a vitamin K antagonist (VKA) (Stratum 1) or antiplatelet therapy (Stratum 2) if there was an indication for anticoagulation or not, respectively. The primary endpoint was the composite of death, myocardial infarction, stroke or transient ischaemic attack, systemic embolism, intracardiac or bioprosthesis thrombosis, deep vein thrombosis or pulmonary embolism, and life-threatening, disabling, or major bleeding over 1-year follow-up. The primary safety endpoint was major, disabling, or life-threatening bleeding. The primary outcome occurred in 138 (18.4%) and 151 (20.1%) patients receiving apixaban or standard of care, respectively [hazard ratio (HR) 0.92; 95% confidence interval (CI) 0.73-1.16] and there was no evidence of interaction between treatment and stratum (Pinteraction = 0.57). The primary safety endpoint was similar in both groups (HR 1.02; 95% CI 0.72-1.44). In Stratum 1 (n = 451), an exploratory analysis showed no difference for all endpoints between apixaban and VKA. In Stratum 2 (n = 1049), the primary outcome and primary safety endpoint did not differ, but obstructive valve thrombosis was reduced with apixaban vs. antiplatelet therapy (HR 0.19; 95% CI 0.08-0.46), while a signal of higher non-cardiovascular mortality was observed with apixaban. CONCLUSION: After TAVI, apixaban was not superior to the standard of care, irrespective of an indication for oral anticoagulation.
Subject(s)
Thrombosis , Transcatheter Aortic Valve Replacement , Anticoagulants/therapeutic use , Aortic Valve/surgery , Fibrinolytic Agents , Hemorrhage/chemically induced , Humans , Platelet Aggregation Inhibitors/therapeutic use , Standard of Care , Thrombosis/prevention & control , Transcatheter Aortic Valve Replacement/adverse effects , Treatment OutcomeABSTRACT
Due to the worldwide spread of the coronavirus disease 2019 (COVID-19), human mobility and economic activity have slowed down considerably since early 2020. A relatively high number of those infected develop serious pneumonia leading to progressive respiratory failure, system disease and often death. Apart from close human-to-human contact, the acceleration and global diffusion of this pandemic has been shown to be associated with changes in atmospheric chemistry and air pollution by microscopic particulate matter (PM). Breathing air with high concentrations of nitrogen dioxide and PM can result in over-expression of the angiotensin converting enzyme-2 (ACE-2) leading to stress of organs, such as heart and kidneys. Satellite monitoring can play a crucial role in spatio-temporal surveillance of the disease by producing data on pollution as proxy for industrial activity, transport and traffic circulation. Real-time monitoring of COVID-19 in air and chemical pollution of the atmospheric boundary layer available from Earth-observing satellites commuting with Health Information Systems (HIS) would be useful for decision makers involved with public health.
Subject(s)
Air Pollutants , Air Pollution , COVID-19 , Air Pollutants/analysis , Air Pollution/analysis , Air Pollution/statistics & numerical data , Environmental Monitoring , Humans , Pandemics , Particulate Matter/analysisABSTRACT
BACKGROUND: The three main cardiac amyloidosis (CA) types have different progression and prognosis. Little is known about the mode of death (MOD) which is commonly attributed to cardiovascular causes in CA. Improving MOD's knowledge could allow to adapt patient care. OBJECTIVE: This retrospective study describes the MOD that occurred during long-term follow-up in CA patients in light-chain (AL), transthyretin hereditary (ATTRv) or wild-type (ATTRwt). MATERIAL AND METHODS: Patients referred to and cared for, at the French referral centre for CA, Henri Mondor Hospital, Créteil between 2010 and 2016 were included. Clinical information surrounding patient deaths were investigated and centrally evaluated by two blinded clinical committees which classified MOD as cardiovascular, non-cardiovascular or unknown and sub-classified it depending on its subtype. RESULTS: From the 566 patients included, 187 had AL, 206 ATTRv and 173 ATTRwt. During the 864 patient-year follow-up, 160 (28%) deaths occurred, with median survival time of 17.3 months (interquartile range 5.1-35.4). The most frequent MOD was cardiovascular (64%) of which worsening heart failure occurred most frequently and for which, 69% were of AL subtype, 79% ATTRv and 76% ATTRwt. Sudden death also occurred more frequently in AL subtype accounting for 29% of AL deaths. Non-cardiovascular MOD occurred in 26% of patients overall. Among these, infection was the most common non-cardiovascular MOD in any type of CA (80%). CONCLUSIONS: Mortality is high during natural course of CA and differs between subtypes. The main MOD were worsening heart failure, sudden death and infection, opening room to optimise management.
Subject(s)
Amyloid Neuropathies, Familial , Amyloidosis , Cardiomyopathies , Heart Failure , Amyloid Neuropathies, Familial/genetics , Death, Sudden , Humans , Retrospective StudiesABSTRACT
BACKGROUND: According to the guidelines, surgical aortic valve replacement (SAVR) is recommended in patients at low surgical risk (EuroSCORE II<4%), whereas for other patients, the decision between transcatheter aortic valve implantation (TAVI) and surgery should be made by the Heart Team, with TAVI being favoured in elderly patients. AIM: The RAC prospective multicentre survey assessed the respective contributions of age and surgical risk scores in therapeutic decision making in elderly patients with severe symptomatic aortic stenosis. METHODS: In September and October 2016, 1049 consecutive patients aged ≥ 75 years were included in 32 centres with on-site TAVI and surgical facilities. The primary endpoint was the decision between medical management, TAVI or SAVR. RESULTS: Mean age was 84±5 years and 53% of patients were female. The surgical risk was classified as high (EuroSCORE II>8%) in 18% of patients, intermediate (EuroSCORE II 4-8%) in 34% and low (EuroSCORE II≤4%) in 48%. TAVI was preferred in 71% of patients, SAVR in 19% and medical treatment in 10%. The choice of TAVI over SAVR was associated with older age (P<0.0001) and a higher EuroSCORE II (P=0.008). However, the weight of EuroSCORE II in therapeutic decision making markedly decreased after the age of 80 years. Indeed, 77% of patients aged ≥ 80 years were referred for TAVI, despite a low estimated surgical risk. CONCLUSIONS: The impact of risk scores depends strongly on age, and decreases considerably after 80 years, most patients being referred for TAVI, independent of their estimated surgical risk. Despite medical advancements, 10% of patients were still denied any intervention.
Subject(s)
Aortic Valve Stenosis , Heart Valve Prosthesis Implantation , Aged , Aged, 80 and over , Aortic Valve Stenosis/diagnostic imaging , Aortic Valve Stenosis/surgery , Female , Heart Valve Prosthesis Implantation/adverse effects , Humans , Male , Prospective Studies , Risk Assessment , Risk Factors , Severity of Illness IndexSubject(s)
COVID-19/prevention & control , Continuous Positive Airway Pressure/statistics & numerical data , Patient Compliance/statistics & numerical data , Sleep Apnea, Obstructive/therapy , Adult , Aged , Female , France , Health Policy , Humans , Linear Models , Longitudinal Studies , Male , Middle AgedABSTRACT
AIM: to investigate the factors implied in the development of postoperative complications in both self-expandable and balloon-expandable transcatheter heart valves by means of finite element analysis (FEA). MATERIALS AND METHODS: FEA was integrated into CT scans to investigate two cases of postoperative device failure for valve thrombosis after the successful implantation of a CoreValve and a Sapien 3 valve. Data were then compared with two patients who had undergone uncomplicated transcatheter heart valve replacement (TAVR) with the same types of valves. RESULTS: Computational biomechanical modeling showed calcifications persisting after device expansion, not visible on the CT scan. These calcifications determined geometrical distortion and elliptical deformation of the valve predisposing to hemodynamic disturbances and potential thrombosis. Increased regional stress was also identified in correspondence to the areas of distortion with the associated paravalvular leak. CONCLUSION: the use of FEA as an adjunct to preoperative imaging might assist patient selection and procedure planning as well as help in the detection and prevention of TAVR complications.
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BACKGROUND: Percutaneous left atrial appendage closure (LAAC) exposes to the risk of device thrombosis in patients with atrial fibrillation who frequently have a contraindication to full anticoagulation. Thereby, dual antiplatelet therapy (DAPT) is usually preferred. No randomized study has evaluated nonvitamin K antagonist oral anticoagulant after LAAC, and we decided to evaluate the efficacy and safety of reduced doses of rivaroxaban after LAAC. METHODS: ADRIFT (Assessment of Dual Antiplatelet Therapy Versus Rivaroxaban in Atrial Fibrillation Patients Treated With Left Atrial Appendage Closure) is a multicenter, phase IIb study, which randomized 105 patients after successful LAAC to either rivaroxaban 10 mg (R10, n=37), rivaroxaban 15 mg (R15, n=35), or DAPT with aspirin 75 mg and clopidogrel 75 mg (n=33). The primary end point was thrombin generation (prothrombin fragments 1+2) measured 2 to 4 hours after drug intake, 10 days after treatment initiation. Thrombin-antithrombin complex, D-dimers, rivaroxaban concentrations were also measured at 10 days and 3 months. Clinical end points were evaluated at 3-month follow-up. RESULTS: The primary end point was reduced with R10 (179 pmol/L [interquartile range (IQR), 129-273], P<0.0001) and R15 (163 pmol/L [IQR, 112-231], P<0.0001) as compared with DAPT (322 pmol/L [IQR, 218-528]). We observed no significant reduction of the primary end point between R10 and R15 while rivaroxaban concentrations increased significantly from 184 ng/mL (IQR, 127-290) with R10 to 274 ng/mL (IQR, 192-377) with R15, P<0.0001. Thrombin-antithrombin complex and D-dimers were numerically lower with both rivaroxaban doses than with DAPT. These findings were all confirmed at 3 months. The clinical end points were not different between groups. A device thrombosis was noted in 2 patients assigned to DAPT. CONCLUSIONS: Thrombin generation measured after LAAC was lower in patients treated by reduced rivaroxaban doses than DAPT, supporting an alternative to the antithrombotic regimens currently used after LAAC and deserves further evaluation in larger studies. Registration: URL: https://www.clinicaltrials.gov. Unique identifier: NCT03273322.
Subject(s)
Atrial Appendage/physiopathology , Atrial Fibrillation/therapy , Atrial Function, Left , Cardiac Catheterization , Dual Anti-Platelet Therapy , Factor Xa Inhibitors/administration & dosage , Fibrinolytic Agents/administration & dosage , Platelet Aggregation Inhibitors/administration & dosage , Rivaroxaban/administration & dosage , Thrombosis/prevention & control , Aged , Aged, 80 and over , Antithrombin III , Atrial Fibrillation/complications , Atrial Fibrillation/diagnosis , Atrial Fibrillation/physiopathology , Biomarkers/blood , Blood Coagulation/drug effects , Cardiac Catheterization/adverse effects , Dual Anti-Platelet Therapy/adverse effects , Factor Xa Inhibitors/adverse effects , Female , Fibrin Fibrinogen Degradation Products/metabolism , Fibrinolytic Agents/adverse effects , France , Heart Rate , Humans , Male , Peptide Fragments/blood , Peptide Hydrolases/blood , Pilot Projects , Platelet Aggregation Inhibitors/adverse effects , Prothrombin , Rivaroxaban/adverse effects , Thrombosis/blood , Thrombosis/diagnosis , Thrombosis/etiology , Time Factors , Treatment OutcomeABSTRACT
OBJECTIVES: The primary objective was to assess the value of the European Society of Cardiology (ESC) criteria, including 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG-PET/CT) in prosthetic valve infective endocarditis (PVE). Secondary objectives were: 1) to assess the reproducibility of 18F-FDG-PET/CT; 2) to compare its diagnostic value with that of echocardiography; and 3) to assess the diagnostic value of the presence of a diffuse splenic uptake BACKGROUND: 18F-FDG PET/CT has been added as a major criterion in the ESC 2015 infective endocarditis (IE) guidelines, but the benefit of the ESC criteria has not been prospectively compared with the conventional Duke criteria. METHODS: Between 2014 and 2017, 175 patients with suspected PVE were prospectively included in 3 French centers. After exclusion of patients with uninterpretable 18F-FDG PET/CT, 115 patients were evaluated, including 91 definite and 24 rejected IE, as defined by an expert consensus. RESULTS: Cardiac uptake by 18F-FDG PET/CT was observed in 67 of 91 patients with definite PVE and 6 with rejected IE (sensitivity 73.6% [95% confidence interval (CI): 63.3% to 82.3%], specificity 75% [95% CI: 53.3% to 90.2%]). The ESC 2015 classification increased the sensitivity of Duke criteria from 57.1% (95% CI: 46.3% to 67.5%) to 83.5% (95% CI: 74.3% to 90.5%) (p < 0.001), but decreased its specificity from 95.8% (95% CI: 78.9% to 99.9%) to 70.8% (95% CI: 48.9% to 87.4%). Intraobserver reproducibility of 18F-FDG PET/CT was good (kappa = 0.84) but interobserver reproducibility was less satisfactory (kappa = 0.63). A diffuse splenic uptake was observed in 24 (20.3%) patients, including 23 (25.3%) of definite PVE, and only 1 (4.2%) rejected PVE (p = 0.024). CONCLUSIONS: 18F-FDG PET/CT is a useful diagnostic tool in suspected PVE, and explains the greater sensitivity of ESC criteria than Duke criteria. However, 18F-FDG PET/CT also presents with important limitations concerning its feasibility, specificity, and reproducibility. Our study describes for the first time a new endocarditis criterion, that is, the presence of a diffuse splenic uptake on 18F-FDG PET/CT.
Subject(s)
Endocarditis , Heart Valve Prosthesis , Cardiology , Fluorodeoxyglucose F18 , Humans , Positron Emission Tomography Computed Tomography , Predictive Value of Tests , Radiopharmaceuticals , Reproducibility of ResultsABSTRACT
BACKGROUND: Transcatheter aortic valve replacement has proved its safety and effectiveness in intermediate- to high-risk and inoperable patients with severe aortic stenosis. However, despite current guideline recommendations, the use of transcatheter aortic valve replacement (TAVR) to treat severe aortic valve stenosis caused by degenerative leaflet thickening and calcification has not been widely adopted in low-risk patients. This reluctance among both cardiac surgeons and cardiologists could be due to concerns regarding clinical and subclinical valve thrombosis. Stent performance alongside increased aortic root and leaflet stresses in surgical bioprostheses has been correlated with complications such as thrombosis, migration and structural valve degeneration. MATERIALS AND METHODS: Self-expandable catheter-based aortic valve replacement (Medtronic, Minneapolis, MN, USA), which was received by patients who developed transcatheter heart valve thrombosis, was investigated using high-resolution biomodelling from computed tomography scanning. Calcific blocks were extracted from a 250 CT multi-slice image for precise three-dimensional geometry image reconstruction of the root and leaflets. RESULTS: Distortion of the stent was observed with incomplete cranial and caudal expansion of the device. The incomplete deployment of the stent was evident in the presence of uncrushed refractory bulky calcifications. This resulted in incomplete alignment of the device within the aortic root and potential dislodgment. CONCLUSION: A Finite Element Analysis (FEA) investigation can anticipate the presence of calcified refractory blocks, the deformation of the prosthetic stent and the development of paravalvular orifice, and it may prevent subclinical and clinical TAVR thrombosis. Here we clearly demonstrate that using exact geometry from high-resolution CT scans in association with FEA allows detection of persistent bulky calcifications that may contribute to thrombus formation after TAVR procedure.
ABSTRACT
AIMS: Early diagnosis of cardiac involvement is a key issue in the management of AL amyloidosis. Our objective was to establish a diagnostic score of cardiac involvement in AL amyloidosis and to compare it with the current consensus criteria [i.e. left ventricular hypertrophy >12 mm and N-terminal pro b-type natriuretic peptide (NT-proBNP) >332 ng/L]. METHODS AND RESULTS: We carried out a prospective and multicenter study on AL amyloidosis patients who underwent cardiac evaluation including clinical examination, electrocardiography (ECG), cardiac biomarkers, transthoracic echocardiography (TTE), and cardiac magnetic resonance imaging (CMR). Cardiac involvement was based on CMR and/or endomyocardial biopsy. In a derivation cohort of 114 patients (82 with cardiac involvement), the highest diagnostic accuracy was observed with NT-proBNP and troponin blood levels, TTE-derived global longitudinal strain (LS), and apical to basal LS gradient. By using multivariate analysis, we established a diagnostic score including global LS ≥-17% (1 point), apical/(basal + median) LS ≥0.90 (1 point), and troponin T >35 ng/L (1 point). A score >1 was associated with sensitivity of 94% and specificity of 97%, an area under the curve of 0.98 [95% confidence interval (CI) 0.93-0.99] as well as a net reclassification index of 0.39 (95% CI 0.28-0.46) when compared with consensus criteria. In a validation cohort of 73 AL amyloidosis patients, the area under the receiver operating characteristic curve of the diagnostic score was 0.97 (95% CI 0.90-0.99). CONCLUSION: Combining T troponin blood levels and two echo-derived strain parameters leads to very high accuracy for diagnosing cardiac involvement in AL amyloid patients.
Subject(s)
Amyloidosis , Cardiomyopathies , Immunoglobulin Light-chain Amyloidosis , Amyloidosis/diagnostic imaging , Biomarkers , Cardiomyopathies/diagnostic imaging , Echocardiography , Humans , Immunoglobulin Light-chain Amyloidosis/diagnostic imaging , Natriuretic Peptide, Brain , Prognosis , Prospective Studies , Troponin TABSTRACT
BACKGROUND: An increased acceleration time to ejection time (AT/ET) ratio is associated with increased mortality in patients with aortic stenosis (AS). AIM: To identify the factors associated with an increased AT/ET ratio. METHODS: The relationships between the AT/ET ratio and clinical and Doppler echocardiographic variables of interest in the setting of AS were analysed retrospectively in 1107 patients with AS and preserved left ventricular (LV) ejection fraction (LVEF). The computed tomography aortic valve calcium (CT-AVC) score was studied in a subgroup of 342 patients. RESULTS: In the univariate analysis, the AT/ET ratio was found to correlate with peak aortic jet velocity (r=0.57; P<0.0001), mean pressure gradient (r=0.60; P<0.0001), aortic valve area (r=-0.50; P<0.0001) and CT-AVC score (r=0.24; P<0.0001). The AT/ET ratio had good accuracy in predicting a peak aortic jet velocity≥4 m/s, a mean pressure gradient≥40mmHg and an aortic valve area≤1.0cm2, with an optimal cut-off value of 0.34. Multivariable linear regression analysis showed that presence of AS-related symptoms, decreased LV stroke volume index, LVEF, absence of diabetes mellitus, systolic blood pressure, increased LV mass index, relative wall thickness and peak aortic jet velocity were independently associated with an increased AT/ET ratio (all P<0.05). In the subgroup of patients who underwent CT-AVC scoring, the CT-AVC score was independently associated with an increased AT/ET ratio (P<0.05). CONCLUSIONS: The AT/ET ratio is related to echocardiographic and CT-AVC indices of AS severity. However, multiple intricate factors beyond the haemodynamic and anatomical severity of AS influence the AT/ET ratio, including LV geometry, function and systolic blood pressure. These findings should be considered when assessing the AT/ET ratio in patients with AS and preserved LVEF.
Subject(s)
Aortic Valve Stenosis/diagnostic imaging , Aortic Valve/diagnostic imaging , Aortic Valve/pathology , Calcinosis/diagnostic imaging , Echocardiography, Doppler , Stroke Volume , Tomography, X-Ray Computed , Ventricular Function, Left , Acceleration , Aged , Aged, 80 and over , Aortic Valve/physiopathology , Aortic Valve Stenosis/physiopathology , Calcinosis/physiopathology , Female , France , Humans , Male , Predictive Value of Tests , Prognosis , Registries , Retrospective Studies , Severity of Illness Index , Time FactorsABSTRACT
BACKGROUND: Ischemic mitral regurgitation is a condition characterized by mitral insufficiency secondary to an ischemic left ventricle. Primarily, the pathology is the result of perturbation of normal regional left ventricular geometry combined with adverse remodeling. We present a comprehensive review of contemporary surgical, medical, and percutaneous treatment options for ischemic mitral regurgitation, rigorously examined by current guidelines and literature. METHODS: We conducted a literature search of the PubMed database, Embase, and the Cochrane Library (through November 2018) for studies reporting perioperative or late mortality and echocardiographic outcomes after surgical and nonsurgical intervention for ischemic mitral regurgitation. RESULTS: Treatment of this condition is challenging and often requires a multimodality approach. These patients usually have multiple comorbidities that may preclude surgery as a viable option. A multidisciplinary team discussion is crucial in optimizing outcomes. There are several options for treatment and management of ischemic mitral regurgitation with differing benefits and risks. Guideline-directed medical therapy for heart failure is the treatment choice for moderate and severe ischemic mitral regurgitation, with consideration of coronary revascularization, mitral valve surgery, cardiac resynchronization therapy, or a combination of these, in appropriate candidates. The use of transcatheter mitral valve therapy is considered appropriate in high-risk patients with severe ischemic mitral regurgitation, heart failure, and reduced left ventricular ejection fraction, especially in those with hemodynamic instability. CONCLUSIONS: The role of mitral valve surgery and transcatheter mitral valve therapy continues to evolve.