scholarly journals Impact of transcatheter aortic valve implantation on left ventricular function recovery, mass regression and outcome in patients with aortic stenosis: protocol of the TAVI-NOR prospective study

BMJ Open ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. e039961
Author(s):  
Abukar Mohamed Ali ◽  
Daanyaal Wasim ◽  
Kjetil Halvorsen Løland ◽  
Svein Rotevatn ◽  
Øyvind Bleie ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Transcatheter Aortic Valve Implantation ◽  
Left Ventricular ◽  
Baseline Risk ◽  
Imaging Protocol ◽  
Transcatheter Aortic Valve ◽  
Aortic Valve Implantation ◽  
Valve Implantation ◽  
The Impact

IntroductionTranscatheter aortic valve implantation (TAVI) is a widely used treatment option as an alternative to surgical aortic valve replacement in patients with severe aortic stenosis (AS) at high or intermediate surgical risk. TAVI improves symptoms, induces reverse left ventricular (LV) remodelling and increases overall survival. However, a careful patient selection is essential to achieve better outcome. Evidence on LV functional recovery and LV mass regression after TAVI based on contemporary registry data is scarce. The impact of TAVI on the arterial vasculature is also less explored.Method and analysesThis is a study of 600 consecutive patients with AS who underwent a TAVI at Haukeland University Hospital, Bergen, Norway. Demographics, clinical data, arterial haemodynamics and echocardiographic parameters were prospectively collected. In the present paper, we describe the design, major scientific objectives and echocardiography imaging protocol of the TAVI-NOR (TAVI in western NORway) study. The main objectives are: To explore the impact of TAVI on cardiac structure and function in patients with severe AS, identify the echocardiographic predictors of reverse LV remodelling, assess survival benefits according to baseline risk profile, evaluate long-term therapeutic success as reflected by reduction in valvular-arterial impedance and to investigate the impact of various types of blood pressure response immediately after TAVI on clinical outcome.Ethics and disseminationThe study was approved by the Regional Committees for Medical and Health Research Ethics (REK vest, ref. number 33814) and the Institutional Data Protection Services. Patients’ consent was waived. The study findings will be disseminated via peer-reviewed publications and presentation in national and international scientific meetings and conferences.Trail registration numberThe study was registered in the international database: ClinicalTrials.gov, Identifier: NCT04417829.

scholarly journals Comparative Analysis of the Kinetic Behavior of Systemic Inflammatory Markers in Patients with Depressed versus Preserved Left Ventricular Function Undergoing Transcatheter Aortic Valve Implantation

2021 ◽  
Vol 10 (18) ◽  
pp. 4148
Author(s):  
Haitham Abu Khadija ◽  
Gera Gandelman ◽  
Omar Ayyad ◽  
Lion Poles ◽  
Michael Jonas ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Transcatheter Aortic Valve Implantation ◽  
Left Ventricular ◽  
Lv Function ◽  
Transcatheter Aortic Valve ◽  
Function Group ◽  
Aortic Valve Implantation ◽  
Inflammatory Profile ◽  
Valve Implantation

Background: Prior studies have proven the safety and efficacy of transcatheter aortic valve implantation (TAVI) in patients with reduced left ventricular (LV) function. This study’s aim was to investigate periprocedural inflammatory responses after TAVI. Methods: Patients with severe symptomatic aortic stenosis and reduced LV function who underwent transfemoral TAVI were enrolled. A paired-matched analysis (1:2 ratio) was performed using patients with preserved LV function. Whole white blood cells (WBC) and subpopulation dynamics as well as the neutrophil to lymphocyte ratio (NLR) were evaluated at different times. Results: A total of 156 patients were enrolled, including 52 patients with LVEF < 40% 35.00 [30.00, 39.25] and 104 with LVEF > 50% 55.00 [53.75, 60.0], p < 0.001. Baseline NLR in the reduced LV function group was significantly higher compared to the preserved LV function group, 2.85 [2.07, 4.78] vs. 3.90 [2.67, 5.26], p < 0.04. After a six-month follow-up, the inflammatory profile was found to be similar in the two groups, NLR 2.94 [2.01, 388] vs. 3.30 [2.06, 5.35], p = 0.288. No significant mortality differences between the two groups were observed in the long-term outcome. Conclusions: TAVI for severe symptomatic aortic stenosis, with reduced LV function, was associated with an improvement in the inflammatory profile that may account for some of the observable benefits of the procedure in this subset of patients.

scholarly journals 725 Assessment of myocardial work for the evaluation of patients undergoing transcatheter aortic valve implantation (TAVI)

2021 ◽  
Vol 23 (Supplement_G) ◽  
Author(s):  
Isabella Leo ◽  
Jolanda Sabatino ◽  
Antonio Strangio ◽  
Sabrina La Bella ◽  
Sabato Sorrentino ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Transcatheter Aortic Valve Implantation ◽  
Severe Aortic Stenosis ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Non Invasive ◽  
Transcatheter Aortic Valve ◽  
Aortic Valve Implantation ◽  
Valve Implantation

Abstract Aims A growing number of patients is undergoing transcatheter treatment of severe Aortic Stenosis. Changes in cardiac mechanics after removal of afterload in these patients are under-investigated. Myocardial Work (MW) is emerging as a useful non-invasive correlate of invasively measured myocardial performance and oxygen consumption. Aim of this study was to assess the usefulness of non-invasive MW indices in the clinical assessment of patients with severe aortic stenosis undergoing transcatheter aortic valve implantation (TAVI). Methods and results Consecutive patients with severe aortic stenosis referred for TAVI in a single tertiary centre were included. Echocardiography recordings (GE-Healthcare) with systolic and diastolic non-invasive pressures, were obtained immediately before TAVI and after TAVI to measure myocardial work index (MWI), myocardial constructive work (MCW), myocardial wasted work (MWW), and myocardial work efficiency (MWE). Consecutive patients with severe AS (n = 73) undergoing TAVI and matched controls (n = 50) were included. Mean transaortic gradient, AV area, and peak transvalvular velocity were significantly improved (all P &lt; 0.05). No changes in left ventricular ejection fraction nor in global longitudinal strain (GLS) were observed. GWI (P &lt; 0.001) and GCW (P &lt; 0.001) were significantly reduced after TAVI. On the contrary, we observed no significant change in GWW (P = 0.241) nor GWE (P = 0.854). Women had higher GWI (P = 0.007) and GCW (P = 0.014) compared to men, with a larger delta change of GCW. Patients with a low flow low gradient (LF-LG) AS had lower LVEF (P &lt; 0.001), worse GLS (P &lt; 0.001) and lower baseline GWI (P &lt; 0.001), GCW (P &lt; 0.001), and GWE (P = 0.003). The improvement in GWI and GCW observed after TAVI in the general study population were abolished among LF-LG patients. Conclusions The use of non-invasive myocardial work might be useful to further classify patients with AS and could be useful to predict non responders.

scholarly journals Impact of transcatheter aortic valve implantation on mechanical dispersion

Open Heart ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. e001199
Author(s):  
Lars Gunnar Klaeboe ◽  
Pål Haugar Brekke ◽  
Lars Aaberge ◽  
Kristina Haugaa ◽  
Thor Edvardsen
Keyword(s):  
Aortic Valve ◽  
Transcatheter Aortic Valve Implantation ◽  
Left Ventricular ◽  
Afterload Reduction ◽  
Mechanical Dispersion ◽  
Transcatheter Aortic Valve ◽  
Aortic Valve Implantation ◽  
Valve Implantation ◽  
The Impact ◽  
Ventricular Conduction

ObjectivesThe physiological determinants of left ventricular (LV) mechanical dispersion (MD) are not fully explored. We aimed to investigate the impact of afterload reduction and changes in ventricular conduction on LV MD after transcatheter aortic valve implantation (TAVI).MethodsPatients with severe aortic stenosis (AS) were examined in a prospective, repeated measures observational cohort study before and after an uncomplicated transfemoral TAVI in a single tertiary centre. LV MD was assessed by speckle tracking echocardiography. Valvulo-arterial impedance (ZVA) was used as a measure of global afterload.ResultsWe included 140 consecutive patients (83±8 years old, 49% women, logistic EuroSCORE 16±10) with severe AS (valve area 0.7±0.2 cm2, mean transvalvular gradient 54±18 mm Hg) and a relatively preserved LV ejection fraction (52%±11%). After TAVI, we observed favourable changes in transvalvular gradients and ZVA in all patients. Compared with baseline, postprocedural MD was significantly lower in 108 patients with unchanged ventricular conduction (55±17 ms vs 51±17 ms, p=0.02) and higher in 28 patients with TAVI-induced left bundle branch block (51±13 ms vs 62±19 ms, p≤0.001). During 22±9 months observation, 22 patients died. Postprocedural MD was associated with mortality in a univariate Cox regression model (HR=1.24 (1.01–1.52), p<0.04, per 10 ms increase).ConclusionsIsolated afterload reduction was associated with reduction of MD, while concomitant impairment of ventricular conduction resulted in a more pronounced MD after TAVI, indicating that loading conditions and conduction should be considered when evaluating MD. A pronounced postprocedural LV MD was associated with mortality.

scholarly journals Does the Presence of Significant Mitral Regurgitation prior to Transcatheter Aortic Valve Implantation for Aortic Stenosis Impact Mortality? – Meta-Analysis and Systematic Review

Cardiology ◽  
2020 ◽  
Vol 145 (7) ◽  
pp. 428-438
Author(s):  
Ankur Sethi ◽  
Vamsi Kodumuri ◽  
Vinoy Prasad ◽  
Ashok Chaudhary ◽  
James Coromilas ◽  
...  
Keyword(s):  
Aortic Valve ◽  
Mitral Regurgitation ◽  
Aortic Stenosis ◽  
Transcatheter Aortic Valve Implantation ◽  
Meta Analysis ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Transcatheter Aortic Valve ◽  
Aortic Valve Implantation ◽  
Valve Implantation

Background: Mitral regurgitation (MR) is commonly encountered in patients with severe aortic stenosis (AS). However, its independent impact on mortality in patients undergoing transcatheter aortic valve implantation (TAVI) has not been established. Methods: We performed a systematic search for studies reporting characteristics and outcome of patients with and without significant MR and/or adjusted mortality associated with MR post-TAVI. We conducted a meta-analysis of quantitative data. Results: Seventeen studies with 20,717 patients compared outcomes and group characteristics. Twenty-one studies with 32,257 patients reported adjusted odds of mortality associated with MR. Patients with MR were older, had a higher Society of Thoracic Surgeons score, lower left ventricular ejection fraction, a higher incidence of prior myocardial infarction, atrial fibrillation, and a trend towards higher NYHA class III/IV, but had similar mean gradient, gender, and chronic kidney disease. The MR patients had a higher unadjusted short-term (RR = 1.46, 95% CI 1.30–1.65) and long-term mortality (RR = 1.40, 95% CI 1.18–1.65). However, 16 of 21 studies with 27,777 patients found no association between MR and mortality after adjusting for baseline variables. In greater than half of the patients (0.56, 95% CI 0.45–0.66) MR improved by at least one grade following TAVI. Conclusion: The patients with MR undergoing TAVI have a higher burden of risk factors which can independently impact mortality. There is a lack of robust evidence supporting an increased mortality in MR patients, after adjusting for other compounding variables. MR tends to improve in the majority of patients post-TAVI.

scholarly journals Impact of myocardial fibrosis on left ventricular remodelling, recovery, and outcome after transcatheter aortic valve implantation in different haemodynamic subtypes of severe aortic stenosis

2020 ◽  
Vol 41 (20) ◽  
pp. 1903-1914 ◽  
Author(s):  
Miriam Puls ◽  
Bo Eric Beuthner ◽  
Rodi Topci ◽  
Anja Vogelgesang ◽  
Annalen Bleckmann ◽  
...  
Keyword(s):  
Heart Failure ◽  
Aortic Valve ◽  
Aortic Stenosis ◽  
Myocardial Fibrosis ◽  
Transcatheter Aortic Valve Implantation ◽  
Left Ventricular ◽  
Lv Function ◽  
Transcatheter Aortic Valve ◽  
Aortic Valve Implantation ◽  
Valve Implantation

Abstract Aims  Myocardial fibrosis (MF) might represent a key player in pathophysiology of heart failure in aortic stenosis (AS). We aimed to assess its impact on left ventricular (LV) remodelling, recovery, and mortality after transcatheter aortic valve implantation (TAVI) in different AS subtypes. Methods and results  One hundred patients with severe AS were prospectively characterized clinically and echocardiographically at baseline (BL), 6 months, 1 year, and 2 years following TAVI. Left ventricular biopsies were harvested after valve deployment. Myocardial fibrosis was assessed after Masson’s trichrome staining, and fibrotic area was calculated as percentage of total tissue area. Patients were stratified according to MF above (MF+) or below (MF−) median percentage MF (≥11% or &lt;11%). Myocardial fibrosis burden differed significantly between AS subtypes, with highest levels in low ejection fraction (EF), low-gradient AS and lowest levels in normal EF, high-gradient AS (29.5 ± 26.4% vs. 13.5 ± 16.1%, P = 0.003). In the entire cohort, MF+ was significantly associated with poorer LV function, higher extent of pathological LV remodelling, and more pronounced clinical heart failure at BL. After TAVI, MF+ was associated with a delay in normalization of LV geometry and function but not per se with absence of reverse remodelling and clinical improvement. However, 22 patients died during follow-up (mean, 11 months), and 14 deaths were classified as cardiovascular (CV) (n = 9 arrhythmia-associated). Importantly, 13 of 14 CV deaths occurred in MF+ patients (CV mortality 26.5% in MF+ vs. 2% in MF− patients, P = 0.0003). Multivariate analysis identified MF+ as independent predictor of CV mortality [hazard ratio (HR) 27.4 (2.0–369), P = 0.01]. Conclusion  Histological MF is associated with AS-related pathological LV remodelling and independently predicts CV mortality after TAVI.

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