2021 ESC/EACTS Guidelines for the management of valvular heart disease

Emerging imaging and circulating biomarkers in relation to underlying mechanisms in Bicuspid Aortic Valve aortopathy

Bicuspid Aortic Valve (BAV) is the most prevalent congenital heart defect with an autosomal dominant inheritance. With up to 2% of the general population affected by the condition, mortality remains high likely due to the development of aortopathy which pre-disposes to the development of aortic dissection. Current guidelines focus on surgical management, once a threshold of aorta diameter is surpassed, via routine image surveillance. However, it is recognised that some will develop aortic dissection without meeting these requirements for surgical intervention. Recent literature has begun to address the need for potential biomarkers specific to aortopathy in the BAV population to aid in risk stratification. Four-dimensional cardiovascular magnetic resonance flow imaging has paved the way to the development of imaging measurements such as wall shear stress and reverse flow which aid in the assessment of aberrant blood flow contributing to aortopathy in the BAV group. Differing levels of plasma biomarkers such as matrix metalloproteinases and microRNA have also been associated with aortopathy development furthering insight into the cellular mechanisms involved in aortic vascular matrix remodelling. This article will provide an overview of the recent research into prospective 4-D imaging and circulating biomarkers that have been studied and potential areas of future work.

Gender differences in the presentation and management of patients with severe aortic stenosis at specialist versus primary/sondary care centres: A sub-analysis of the IMPULSE enhanced registry

BACKGROUND

Management and treatment of severe aortic stenosis (AS) may differ considerably in European countries. To investigate these differences in France, Germany, and the UK the IMPULSE enhanced registry was established. Previous data revealed differences in how patients were managed in specialist (hub) versus primary/secondary care (satellite) centres.

METHODS

The IMPULSE enhanced registry sub-analysis aimed to determine if there were gender-specific differences for patients with severe AS at centres with and without access to intervention.

RESULTS

Among the 790 patients, 594 and 196 were recruited at hub and satellite centres, respectively; 44 % of patients were female. In both settings, women were older than men (hubs: 78.7 vs. 76.2, p = 0.007; satellites: 79.8 vs. 75.1, p = 0.002). Symptoms at the presentation were comparable. Males had more often undergone previous cardiac surgery. Females had a smaller left ventricular outflow tract (LVOT), smaller LV cavities, and, more often, a preserved ejection fraction (>50 %). There was no gender-based difference in time to intervention. At one year, the cumulative incidence of aortic valve replacement in females was higher than in males in hubs (p = 0.012) but not in satellites (p = 0.600); surgical AVR was more common in males in hubs only (p = 0.008), while transcatheter aortic valve implantation was more common in females in both settings (hubs: p < 0.001; satellites: p = 0.022). One-year survival was comparable in both genders, regardless of setting.

CONCLUSIONS

A better understanding of gender-specific differences in patients with severe AS, according to the diagnostic setting, could improve patient stratification and earlier diagnosis.

Mitral repair with annuloplasty for moderate ischemic mitral regurgitation in people undergoing coronary artery bypass surgery

OBJECTIVES

This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To assess the effects of mitral repair with annuloplasty for moderate ischemic mitral regurgitation in people undergoing coronary artery bypass grafting.

A propensity-matched comparison of plug- versus suture-based vascular closure after TAVI

BACKGROUND

Vascular access site complications are associated with increased morbidity and mortality after transcatheter aortic valve implantation (TAVI). Current results comparing strategies with plug- (P-VCD; MANTA) and suture-based vascular closure devices (S-VCD; Perclose ProGlide) remain inconsistent.

AIMS

It was our aim to assess the incidence of access-related vascular complications after P-VCD or S-VCD strategies after transfemoral TAVI.

METHODS

The Plug or sUture based vascuLar cloSurE after TAVI (PULSE) registry retrospectively evaluated 10,120 consecutive patients who had undergone transfemoral TAVI at 10 centres from 2016 to 2021. A propensity score was used to match 900 P-VCD patients with 1,800 S-VCD patients in a 1:2 fashion. The primary outcome measures were major and minor access-related vascular complications at the primary access site, adjudicated according to Valve Academic Research Consortium 3 definitions.

RESULTS

The median age was 81.8 years, 46.4% of patients were female, and the median European System for Cardiac Operative Risk Evaluation II was 3.50%. In matched P-VCD and S-VCD groups, large-bore access-related complications occurred in 14.9% vs 10.3% (p<0.001; major: 3.6% vs 4.6%; p=0.218; minor: 11.3% vs 5.8%; p<0.001) of patients. Bleeding accounted for most of these complications (9.6% vs 7.2%; p=0.028) and was treated with endovascular balloon inflation (5.4% vs 2.6%; p<0.001), stent implantation (4.7% vs 0.7%; p<0.001) or surgical repair (0.7% vs 1.7%; p=0.03).

CONCLUSIONS

P-VCD were associated with higher rates of primary access-related vascular complications, driven by minor complications, compared to S-VCD. Endovascular treatment was more common after P-VCD failure.

Transcatheter annuloplasty with the K-Clip system for tricuspid regurgitation: one-year results from the TriStar study

BACKGROUND

Despite the fact that morbidity and mortality rates significantly increase with tricuspid regurgitation (TR) severity, limited treatment options are available for treating severe TR.

AIMS

The single-arm, multicentre, prospective Confirmatory Clinical Study of Treating Tricuspid Regurgitation With K-Clip TM Transcatheter Annuloplasty System (TriStar) evaluated the 1-year outcomes of the novel transcatheter K-Clip annuloplasty system in treating secondary TR.

METHODS

Between May 2022 and October 2022, patients with ≥severe secondary TR despite optimal medical therapy at 11 centres in China were deemed candidates for transcatheter tricuspid repair by the local Heart Team and a multidisciplinary screening committee. Echocardiographic parameters, clinical and quality-of-life measures, and major adverse events were collected at 1 year.

RESULTS

Ninety-six patients were enrolled (mean age 72.6±7.0 years, 60.4% female, mean TRI-SCORE 5.4±2.1). The technical success rate was 97.9%. At 1 year, echocardiographic follow-up showed an average reduction in the annular septolateral diameter of 11.3% (41.9 mm vs 37.1 mm; p<0.01), compared with baseline, with marked right ventricular remodelling. A total of 82.5% of patients had ≤moderate TR, and 97.7% had a ≥1 grade reduction. Patients experienced significant clinical improvements in New York Heart Association Functional Class I/II (32.6% to 96.5%; p<0.001), the 6-minute walk distance increased by 31.9±71.8 m (p<0.001), and the overall Kansas City Cardiomyopathy Questionnaire score increased by 7.6±17.7 points (p<0.001). Neither cardiovascular death nor reintervention were recorded at the 30-day or 1-year follow-up, while severe bleeding requiring further treatment was noted in 5 patients at 1 year. The Kaplan-Meier estimates of survival and freedom from heart failure rehospitalisation were 97.8% and 95.1%, respectively, at 1 year.

CONCLUSIONS

The 1-year experience using the K-Clip tricuspid annuloplasty system demonstrated high survival and low rehospitalisation rates with durable TR reduction and clinical benefits in functional status and quality-of-life outcomes.

Evaluating the Methodological Rigor and Recommendation Excellence of TAVR Guidelines: Insights from AGREE II and AGREE-REX Instruments

PURPOSE

Transcatheter aortic valve replacement (TAVR) has emerged as a critical innovation for managing severe aortic stenosis, prompting the development of numerous clinical practice guidelines worldwide. This study systematically evaluates the guideline development methodologies of major international TAVR guidelines using the AGREE II and AGREE-REX instruments, aiming to enhance understanding of current development processes.

METHODS

A comprehensive search was conducted in PubMed, Embase, Web of Science, and specialized guideline repositories. Twenty-four TAVR-specific guidelines were independently evaluated by four reviewers using the AGREE II and AGREE-REX instruments. The guidelines were categorized as evidence- or consensus-based, and statistical analysis was performed using SPSS to standardize scores and assess inter-rater reliability.

RESULTS

Systematic assessment revealed significant methodological variations across guidelines. The AGREE II evaluation showed the highest performance in scope and purpose (83.9 ± 10.0%) but lower scores in rigor of development (43.5 ± 29.0%) and applicability (42.4 ± 26.8%). The AGREE-REX analysis demonstrated stronger performance in implementability (78.6 ± 14.5%) while identifying gaps in the integration of values and preferences (35.7 ± 17.2%). Evidence-based guidelines consistently outperformed consensus-based ones across multiple domains, particularly in terms of methodological rigor and implementation planning.

DISCUSSION

This evaluation highlights key areas for improving guideline development methodology, including standardized evidence evaluation processes, systematic stakeholder engagement, and structured implementation planning. The considerable variability in methodological quality underscores the need for more standardized approaches.

CONCLUSION

Current TAVR guidelines exhibit significant heterogeneity in methodological quality, with evidence-based guidelines demonstrating superior performance in development rigor and implementation planning. Systematic approaches to evidence synthesis and stakeholder engagement are crucial for high-quality guideline development.

Ross Procedure for Aortic Regurgitation versus Stenosis in Adults With and Without Autograft Support

OBJECTIVES

The Ross procedure for aortic regurgitation (AR) and abnormal aortic valve morphologies is associated with an increased risk of autograft dilatation. Autograft support may ameliorate this problem. We analysed the results for all haemodynamic lesions and the effect of autograft support.

METHODS

A retrospective analysis was conducted of patients who underwent a Ross procedure at Saarland University Medical Center between December 1995 and December 2023. Three hundred and fifteen patients underwent full-root replacement with or without autograft support. Twenty-three (7%) were younger than 18 years and were excluded. The cohort was divided into 3 groups: patients with aortic stenosis (AS), AR and combined disease (CD). End points included survival, freedom from reoperation and AR and aortic root dimensions; these were compared among the 3 groups. Median follow-up was 3.6 (range 0.01-26.6) years and 95% complete.

RESULTS

Overall, 292 adult patients [male 74%; mean age 39 years (SD: 10)] were analysed with (n = 209) or without autograft support (n = 83). Patients with AS (n = 79; 28%) were compared to those with AR (n = 77; 25%) and those with CD (n = 136; 50%). Valve morphology was unicuspid (n = 141; 48%), bicuspid (n = 109; 38%) or tricuspid (n = 42; 14%). Survival at 15 years was similar across the groups (AR 86%; AS 93%; CD 94%; P = 0.123). Freedom from autograft reoperation was 90% at 10 years (AR 80%; AS 95%; CD 92%; P = 0.009). With autograft support, it was 93% at 10 years (AR 90%; AS 93%; CD 95%; P = 0.179). Neither a unicuspid (hazard ratio 1.072; 95% confidence interval 0.34-3.43; P = 0.907) nor a bicuspid aortic valve (hazard ratio 0.102; 95% confidence interval 0.08-1.26; P = 0.102) was associated with reoperation.

CONCLUSIONS

Patients with AR and an unsupported root replacement do have an increased risk of reintervention, irrespective of aortic valve morphology. With autograft support, however, autograft stability is excellent, irrespective of the underlying lesion. Thus, the Ross procedure in its supported version can be offered to all haemodynamic types and valve morphologies.

CLINICAL REGISTRATION

CEP 203/19.

Sex-related differences in hospital outcomes after balloon aortic valvuloplasty

BACKGROUND

Sex differences in the prevalence and characteristics of cardiac pathologies, including aortic stenosis (AS), are well-documented. For instance, females with severe AS exhibit lower degrees of calcification but higher levels of fibrosis compared to males. This study aims to evaluate sex-based differences in in-hospital outcomes among patients with AS undergoing balloon aortic valvuloplasty (BAV).

METHODS

National Inpatient Sample database was queried from 2015 to 2019, identifying adult patients with severe nonrheumatic AS undergoing BAV using ICD-10 codes. Statistical analyses included Chi-Squared tests for initial comparisons followed by logistic regression to adjust for covariates.

RESULTS

The study included 19,510 patients: 10,556 males (54.1 %) and 8954 females (45.9 %). Females demonstrated lower rates of post-procedural in-hospital mortality, acute kidney injury, infection, ventricular arrhythmias, and pneumothorax, however higher incidence of stroke or transient ischemic attack (TIA), red blood cell transfusions, vascular complications, and pericardial effusion. Adjusted analysis revealed female patients had lower mortality rates (OR 0.89; 95 % CI [0.79-1.0]; p = 0.042), but higher rates of red blood cell transfusions (OR 1.6; 95 % CI [1.4-1.8]; p < 0.001) and vascular complications (OR 1.5; 95 % CI [1.3-1.8]; p < 0.001), without significant difference in stroke (OR 1.1; 95 % CI [0.91-1.3]; p = 0.309).

CONCLUSIONS

Females undergoing BAV for severe AS experienced lower in-hospital mortality but higher rates of vascular complications and red blood cell transfusions compared to males. These findings underscore the importance of a sex-specific approach in the management of AS to reduce adverse outcomes and optimize patient care.

Five-Year Multiple Comparison of Transcatheter Aortic Valves: Insights From the OBSERVANT II study

BACKGROUND

Head-to-head comparisons of second and third generations of transcatheter heart valves (THVs) are mostly limited to 2-arm studies and to mid-term follow-up. The aim of this study was to simultaneously compare clinical outcomes of transcatheter aortic valve replacement (TAVR) with 4 different THVs at 5 years.

METHODS

Patients undergoing transfemoral TAVR with 4 second-generation THV platforms and enrolled in the multicentre prospective OBSERVANT II study from December 2016 to September 2018 were compared according to the THV received. Outcomes were adjudicated through a linkage with administrative databases and adjusted by means of inverse propensity of treatment weighting (IPTW) based on propensity score. The primary end points were death from any cause and major adverse cardiac and cerebrovascular events (MACCE) at 5 years. Cumulative rates were reported consecutively for Evolut R/Pro, Sapien 3, Acurate Neo, and Portico groups.

RESULTS

A total of 2493 patients were considered. The median age was 83 years and median EuroSCORE 2 was 4.9%. After IPTW adjustment, the rates of all-cause death (53.6%, 46.7%, 50.5%, and 46.3%; P = 0.06) and MACCE (57.2%, 51.2%, 54.4%, and 50.6%; P = 0.08) did not differ among the groups at 5 years. The rate of rehospitalisation for heart failure (HF) (33.9%, 27.0%, 31.6%, 33.7%; P = 0.02) was significantly lower for Sapien 3 at 5 years.

CONCLUSIONS

Data from real-world practice showed sustained and similar effectiveness of TAVR considering all the available THVs up to 5 years, but Sapien 3 showed a lower rate of rehospitalisation for HF.

Prognostic implications and reversibility of pulmonary vascular resistance derived by echocardiography in patients undergoing tricuspid annuloplasty

AIMS

Pulmonary vascular resistance (PVR) intimately correlates with right ventricular afterload and the development of secondary tricuspid regurgitation (sTR). We sought to investigate the prognostic roles of PVR derived by echocardiography in patients with sTR undergoing tricuspid annuloplasty (TA).

METHODS AND RESULTS

Data from 322 TA patients [median age (inter-quartile range): 65.0 (59.0-70.0) years; 35.7% males] were obtained from a prospective registry to determine the impact of PVR on the composite outcome [including all-cause mortality and heart failure (HF) hospitalization]. PVR was calculated by dividing the peak TR velocity by time-velocity integral of the right ventricular outflow tract followed by adding 0.16. During a median follow-up of 5.2 years, 108 adverse events occurred including 48 deaths and 60 HF readmissions. Baseline PVR ≥ 2 WU was independently associated with a higher risk of composite outcome (HR: 1.674, 95% CI: 1.028-2.726, P = 0.038). Baseline PVR outperforms both pulmonary artery systolic pressure (PASP) and the ratio of tricuspid annulus plane systolic excursion to PASP in terms of outcome prediction, with pronounced improvement of global model fit, reclassification, and discrimination. In 150 patients who received short-term echocardiograms after surgery, the presence of post-operative PVR ≥ 2 WU (n = 20, 13.3%) was independently associated with the composite outcome (HR: 2.621, 95% CI: 1.292-5.319, P = 0.008).

CONCLUSION

PVR derived by echocardiography is an independent determinant of outcomes in patients undergoing TA for sTR. The inclusion of non-invasive PVR may provide valuable information to improve patient selection and post-operative management in this population.

Timing and Outcomes of PCI in Conjunction With TAVR With Balloon-Expandable Valves

BACKGROUND

The optimal timing for percutaneous coronary intervention (PCI) in patients undergoing transcatheter aortic valve replacement (TAVR) is debatable.

OBJECTIVES

The aim of this study was to compare outcomes based on the timing of PCI in stable coronary artery disease patients undergoing TAVR.

METHODS

Leveraging the STS/ACC TVT Registry and Medicare Linkage, we analyzed patients with stable coronary artery disease undergoing PCI and TAVR between 2015 and 2023 using the SAPIEN 3 balloon-expandable valve platform. This analysis included patients who underwent PCI within ±90 days of the index TAVR procedure. All-cause mortality, stroke, and a composite of mortality and stroke were analyzed up to 3 years using Medicare Linkage.

RESULTS

Of the 51,480 patients who underwent PCI and TAVR with SAPIEN 3 platforms during the study period, 84.7% had PCI within 90 days before TAVR, 13.9% had concomitant PCI, and 1.4% had PCI within 90 days after TAVR. In the propensity-matched analysis, patients undergoing PCI before TAVR had better outcomes in terms of all cause-mortality (38.1% vs 38.8%; P = 0.013) and a composite of mortality and stroke (42.8% vs 43.5%; P = 0.012) compared with the ones undergoing concomitant PCI at 3-year follow-up. Major vascular complications were higher in patients undergoing concomitant PCI and TAVR (2% vs 1.4%; P = 0.003) CONCLUSIONS: Patients undergoing concomitant PCI and TAVR had higher major vascular complications, and slightly higher composite of all-cause mortality and stroke compared with those who underwent PCI within 90 days before the TAVR procedure.

Atrial Functional Tricuspid Regurgitation (AFTR) Is Associated with Better Outcome After Tricuspid Transcatheter Edge-to-Edge Repair (T-TEER) Compared to Ventricular FTR (VFTR)

Background: Transcatheter tricuspid edge-to-edge repair (T-TEER) is widely used to treat atrial (AFTR) and ventricular (VFTR) functional tricuspid regurgitation (FTR). Methods: The outcome of 136 patients treated with T-TEER for severe AFTR or VFTR was analyzed using a composite endpoint of all-cause death and rehospitalization for decompensated heart failure. AFTR was defined as TR in the context of left ventricular ejection fraction ≥50%, right ventricular fractional area change (RVFAC) ≥ 35% and sPAP ≤ 50 mmHg. Results: Patients with VFTR (N = 109) and AFTR (N = 27, 19.9%) were both elderly (82.0 {IQR: 74.5-84.5} vs. 82.0 {IQR: 75.0-84.0} years, p = 0.98) and had similar interventional risk according to the EuroScore II (6.1 {4.0-9.8} vs. 4.7 {3.6-9.6} %, p = 0.3). Atrial fibrillation was equally frequent in both groups (89.9 vs. 88.9%, p = 0.88). AFTR patients were significantly more often female (56.0 vs. 77.8%, p = 0.04) and had lower NT-proBNP (3600.0 {1706.0-6302.0} vs. 1988.0 {1034.8-3723.3} pg/mL, p < 0.01). While RVFAC (29.5 ± 8.6 vs. 42.1 ± 4.3%, p < 0.01) and LVEF (48.5 ± 12.3 vs. 58.6 ± 8.0%, p < 0.01) were expectedly lower in patients with VFTR, right atrial dilation (RA volume: 126.7 ± 56.5 vs. 127.6 ± 74.2 mL, p = 0.99) was similar. Successful T-TEER with TR reduction ≥ 2 degrees (96.3 vs. 92.6%, p = 0.34) was observed in both groups, and residual TR ≤ II was equally frequent (94.5 vs. 96.3%, p = 1.0). The incidence of the 1-year composite endpoint was significantly higher (34.3 vs. 12.0%) in patients with VFTR (log-rank p = 0.02). AFTR was inversely associated with the composite endpoint (HR: 0.21, 95% CI: 0.06-0.7, p < 0.01) in multivariate Cox regression. Conclusions: Despite equally effective TR reduction through T-TEER, a better outcome was observed in patients with AFTR.

Early outcomes of the novel Myval THV series compared to SAPIEN THV series and Evolut THV series in individuals with severe aortic stenosis

BACKGROUND

There are limited head-to-head randomised trials comparing the performance of different transcatheter heart valves (THVs).

AIMS

We aimed to evaluate the non-inferiority of the balloon-expandable Myval THV series compared to the balloon-expandable SAPIEN THV series or the self-expanding Evolut THV series.

METHODS

The LANDMARK trial randomised 768 patients in a 1:1 ratio, (Myval THV series [n=384] vs contemporary series with 50% SAPIEN THV series [n=192] and 50% Evolut THV series [n=192]). The non-inferiority of Myval over the SAPIEN or Evolut THV series in terms of the 30-day primary composite safety and effectiveness endpoint as per the third Valve Academic Research Consortium (VARC-3) was tested in an intention-to-treat population with a predefined statistical power of 80% (1-sided alpha of 5%) for a non-inferiority margin of 10.44%.

RESULTS

The Myval THV series achieved non-inferiority for the primary composite endpoint over the SAPIEN THV series (24.7% vs 24.1%, risk difference [95% confidence interval {CI}]: 0.6% [not applicable {NA} to 8.0]; p=0.0033) and the Evolut THV series (24.7% vs 30.0%, risk difference [95% CI]: -5.3% [NA to 2.5]; p<0.0001). The incidences of pacemaker implantation were comparable (Myval THV series: 15.0%, SAPIEN THV series: 17.3%, Evolut THV series: 16.8%). At 30 days, the mean pressure gradient and effective orifice area were significantly better with the Myval THV series compared to the SAPIEN THV series (p<0.0001) and better with the Evolut THV series than with the Myval THV series (p<0.0001). At 30 days, the proportion of moderate to severe prosthetic valve regurgitation was numerically higher with the Evolut THV series compared to the Myval THV series (7.4% vs 3.4%; p=0.06), while not significantly different between the Myval THV series and the SAPIEN THV series (3.4% vs 1.6%; p=0.32).

CONCLUSIONS

The Myval THV series is non-inferior to the SAPIEN THV series and the Evolut THV series in terms of the primary composite endpoint at 30 days.

CLINICAL TRIAL REGISTRATION

ClinicalTrials.gov: NCT04275726; EudraCT number 2020-000,137-40.

TAVI with the ACURATE neo2 in severe bicuspid aortic valve stenosis: the Neo2 BAV Registry

BACKGROUND

The ACURATE neo2 is a contemporary transcatheter aortic valve implantation (TAVI) system approved for the treatment of severe aortic stenosis in Europe. The ACURATE neo2 has not been evaluated in bicuspid aortic valve (BAV) stenosis.

AIMS

We sought to evaluate the safety and efficacy of ACURATE neo2 in patients with BAV stenosis.

METHODS

We retrospectively analysed consecutive severe BAV stenosis patients undergoing TAVI with ACURATE neo2 at 10 European centres. Imaging data from preprocedural multislice computed tomography, pre- and postprocedural echocardiography, and procedural cinefluoroscopy were evaluated by a core laboratory. Valve Academic Research Consortium 3 (VARC-3)-defined 30-day procedure safety and efficacy were the primary endpoints. Adverse events were site-reported according to VARC-3 criteria.

RESULTS

Among 181 patients with BAV stenosis treated with the ACURATE neo2, the mean age was 77.5±7.2 years, 58.0% were female, and the Society of Thoracic Surgeons Predicted Risk of Mortality (STS-PROM) score was 2.3% (1.6-3.7%). Most procedures were transfemoral, and predilatation was performed in all cases. A second valve was required in 4 cases (2.2%). VARC-3-defined technical success was 95.6%. The primary endpoints of device success and early safety occurred in 90.6% and 82.3%, respectively. At 30 days, cardiovascular death occurred in 2.2% (N=4) and stroke in 1.6% (N=3). Core laboratory-adjudicated echocardiography reported an effective orifice area of 2.0 (1.7-2.5) cm2 and a mean transvalvular gradient of 6.5 (4.6-9.0) mmHg. Half of all cases (51.2%) had no paravalvular leak, while moderate leak occurred in 4.3%. A new permanent pacemaker was required in 11 patients (6.5%).

CONCLUSIONS

The ACURATE neo2 demonstrated favourable clinical outcomes and bioprosthetic valve performance at 30 days in selected patients with severe BAV stenosis.

Emergency interventions for cardiogenic shock due to decompensated aortic stenosis: a systematic review and meta-analysis

BACKGROUND

Cardiogenic shock (CS) induced by severe aortic stenosis (AS) is a life-threatening condition with high mortality. Despite advancements in emergency interventions, the optimal treatment approach remains uncertain.

AIM

This study aimed to systematically review and analyse the existing evidence on outcomes of emergency transcatheter aortic valve implantation (eTAVI) and emergency balloon aortic valvuloplasty (eBAV) in CS patients.

METHODS

A systematic literature review and meta-analysis was performed. The primary endpoint was mortality at 30 days. Secondary endpoints were in-hospital mortality, 1-year mortality, bleeding, major vascular complications, myocardial infarction, stroke, incidence of pacemaker implantation, acute kidney injury and aortic regurgitation.

RESULTS

Seventeen studies were included, totalling 2811 patients. The analysis revealed a 30-day mortality pooled estimated rate for eTAVI of 19% (CI 0.17 - 0.20) and for eBAV 39% (CI 0.32 - 0.46). In-hospital mortality pooled estimated rates were 11% for eTAVI (CI 0.06 - 0.18) and for eBAV 40% (CI 0.28 - 0.54). One-year mortality pooled estimated rates for eTAVI were 29% (CI 0.20 - 0.40) and for eBAV 67% (CI 0.58 - 0.74). Pooled estimated rates of any bleeding were 12% for eTAVI (CI 0.06 - 0.20) and 15% for eBAV (CI 0.10 - 0.21). The rate of major vascular complications for eTAVI was 8% (CI 0.07 - 0.10) and 3% for eBAV (CI 0.0 - 0.23).

CONCLUSIONS

This meta-analysis indicates that mortality in CS due to AS remains high despite emergency interventional treatment. These findings offer critical insights for clinical decision-making optimising patient care in this critically ill population.

Edge-to-edge repair for tricuspid regurgitation: 1-year follow-up and clinical implications from the TR-Interventional Study

AIMS

Tricuspid regurgitation affects 7% of the population, with moderate-to-severe tricuspid regurgitation contributing to up to 12% of heart failure-related hospitalizations. Traditional treatments have several limitations, prompting the exploration of innovative interventions. Our study aims to investigate the efficacy and clinical outcomes following transcatheter edge-to-edge repair (TEER) in patients with severe, symptomatic tricuspid regurgitation through a 1-year follow-up.

METHODS

The TR-Interventional study (TRIS) is a prospective, single-arm study conducted at the Fondazione Policlinico Universitario Campus Bio-Medico. From March 2021 to December 2023, we enrolled 44 symptomatic patients with at least severe tricuspid regurgitation referred for tricuspid TEER with the TriClip System.

RESULTS

The study cohort had a mean age of 78.3 ± 7 years with a median TRISCORE 5.4% (interquartile range 3.5-9.0). Significant reduction in tricuspid regurgitation grade occurred immediately after the procedure with durable results at 30 days and 1-year follow-up (P < 0.001). The primary efficacy endpoint, which assesses the successful implantation and performance of the device at 30 days, was attained in 82.9% of patients. The secondary efficacy endpoint, evaluating the stability of tricuspid regurgitation reduction at 12 months, was achieved in 82.3% of patients. The NYHA Functional Class and KCCQ scores significantly improved from baseline to 1 year (P < 0.05; P < 0.0001). Echocardiographic assessments reveal sustained positive right ventricle remodeling throughout the 1-year follow-up period.

CONCLUSION

Evidence from the TRIS study confirms that tricuspid TEER is a valuable and effective therapeutic option in contemporary practice. The lasting reduction in tricuspid regurgitation at 1 year is associated with sustained clinical benefits and reverse structural remodeling of the right ventricle.

Repairing the mitral valve without touching the mitral valve-a novel technique

A 44-year-old gentleman presented with severe ischemic cardiomyopathy and mitral regurgitation post-inferior myocardial infarction. Echocardiography and magnetic resonance imaging revealed a dilated left ventricle with a large left ventricular aneurysm (9.3 × 9.5 cm) and associated thrombus. Severe mitral regurgitation due to leaflet tethering and a left ventricular ejection fraction (LVEF) of 25% were also seen. The patient underwent successful aneurysmectomy with patch repair and papillary muscle approximation. Following initial weaning from cardiopulmonary bypass, 6 days of postoperative temporary veno-arterial extracorporeal membrane oxygenation support were required. The patient was subsequently discharged on postoperative day sixteen with improved cardiac function (LVEF of 45%) and trace residual mitral regurgitation, highlighting the efficacy of geometric restoration in addressing such mitral regurgitation, avoiding conventional intervention on the mitral valve itself.

Lifetime management considerations to optimise transcatheter aortic valve implantation: a practical guide

Transcatheter aortic valve implantation (TAVI) is a safe and effective procedure for the treatment of aortic stenosis. With the recently broadened indications, there is a larger cohort of patients likely to outlive their first transcatheter heart valve (THV). This review discusses relevant lifetime planning considerations, focusing on the utility of preprocedural computed tomography imaging to help implanters future-proof their patients who are likely to outlive their first valve. The initial priority is to optimise the index procedure by maximising THV haemodynamic function and durability. This involves maximising the effective orifice area, minimising the risk of new pacemaker implantation, reducing paravalvular regurgitation, and preventing coronary obstruction and annular rupture. In patients requiring a second valve procedure, a significant proportion will require a TAVI-in-TAVI, and implanters should consider the key priorities for a redo procedure, including the increased risks of patient-prosthesis mismatch and conduction abnormalities, promoting coronary reaccessibility, and preventing coronary obstruction and sinus sequestration. Careful planning can identify potential hurdles as well as predict the feasibility and likely outcomes of redo-TAVI, to help individualise care over the lifetime of each patient.

Management of Acute Ischemic Stroke Following Transcatheter Aortic Valve Implantation: A Systematic Review and Multidisciplinary Treatment Recommendations

Background/Objectives: Acute ischemic stroke is an uncommon but potentially devastating complication of Transcatheter Aortic Valve Implantation (TAVI). Despite improvements in device technology and procedural techniques, stroke rates have remained stable, with cerebral embolic protection devices demonstrating only limited efficacy to date. Therefore, the management of acute ischemic stroke complicating TAVI (AISCT) remains a key priority. We conducted a systematic review of the management of AISCT and provided multidisciplinary consensus recommendations for optimal management. Methods: PubMed, Google Scholar, and Cochrane databases were searched from inception to October 2023. All the original studies focusing on the treatment of AISCT were included. Non-English language studies, review articles, and studies in pediatric populations were excluded. Consensus recommendations were made by a working group comprising experts in stroke medicine and structural interventional cardiology. Results: A total of 18 studies met the inclusion criteria, including 14 case reports/series and 4 observational studies. No clinical trials were identified. The included case reports and series suggest that tissue-type plasminogen activator (tPA) and mechanical thrombectomy (MT) might be effective strategies for managing AISCT. However, significant bleeding complications were reported in two out of the four patients receiving tPA. Four observational studies also suggest an association between tPA and/or MT and improved functional outcomes and survival compared to conservative management. Higher bleeding rates were reported following tPA. Observational data suggest that there is currently little real-world utilization of either reperfusion strategy. Conclusions: There is an absence of high-quality randomized data to guide clinical decision making in this important area. Observational data suggest reperfusion strategies are associated with improved clinical outcomes once important confounders such as stroke severity have been accounted for. While MT can be recommended as the standard of care in appropriately selected patients, significantly increased rates of bleeding with tPA following large-bore arterial access raise important safety concerns. We present simple clinical guidance for AISCT based on the limited available data. Close multidisciplinary work and patient-specific consideration of ischemic and bleeding risk is essential.

ECMO in the Management of Noncardiogenic Pulmonary Edema with Increased Inflammatory Reaction After Cardiac Surgery: A Case Report and Literature Review

Noncardiogenic pulmonary edema after cardiac surgery is a rare but severe complication. The etiology remains poorly understood; however, the issue may arise from multiple sources. Possible causes include a significant inflammatory response or an autoimmune process. Pulmonary edema resulting from noncardiac etiologies can necessitate extracorporeal membrane oxygenation (ECMO) because most of the cases present a substantial volume of fluid expelled from the lungs and the medical team must manage the inability to achieve effective ventilation. A 64-year-old patient with known heart disease was admitted to our clinic with acute pulmonary edema. His medical history included Barlow's disease, severe mitral regurgitation (IIP2), moderate-severe tricuspid regurgitation, and moderate pulmonary hypertension. The patient had a coronary angiography performed in a prior hospitalization before the surgical intervention which indicated the absence of coronary lesions. Preoperative screening (nasal, pharyngeal exudate, inguinal pouch culture, and urine culture) was negative, with no active dental infections. The patient was stabilized, and 14 days post-admission, mitral and tricuspid valve repair was performed via a thoracoscopic approach. After being admitted to intensive care post-surgery, the patient quickly developed pulmonary edema, producing a large volume (4.5 L) of yellow secretions through the intubation tube followed by hemodynamic instability necessitating high doses of medications to support circulation but no cardiorespiratory arrest. Due to his worsening condition, the patient was urgently taken back to the operating room, where veno-venous extracorporeal membrane oxygenation (VV-ECMO) was initiated to support oxygenation and stabilize the patient.

Cerebral Embolic Protection: Is There a Benefit for Left Atrial and Mitral Valve Procedures?

PURPOSE OF REVIEW

This review aims to highlight the current evidence on the use of cerebral embolic protection devices (CEPD) in left atrial and transcatheter mitral valve procedures. It also aims to summarize the antithrombotic management of patients undergoing such procedures.

RECENT FINDINGS

Ischemic stroke is one of the most devastating complications of structural heart procedures. The manifestation of periprocedural stroke can range from asymptomatic and detectable only through brain imaging to major stroke with neurological deficits. CEP devices were initially developed to mitigate the risk of stroke associated with transcatheter aortic valve replacement (TAVR). However, the efficacy of such devices during different cardiac interventions is yet to be fully demonstrated, especially in left atrial appendage closure (LAAO), and mitral valve interventions. Few studies demonstrated that the risk of periprocedural strokes after LAAO and mitral valve interventions is not negligible and is highest during the periprocedural period and then falls. The majority of patients undergoing those procedures have cerebral ischemic injuries detected on diffusion-weighted magnetic resonance imaging (DW-MRI). Moreover, a reasonable number of those patients had debris embolization on the filters of the CEPD. Pharmacological therapy with antithrombotic agents before, during, or after structural heart interventions is crucial and should be tailored to each patient's risk of bleeding and ischemia. Close monitoring that includes a full neurological assessment and frequent follow-up visits with cardiac echocardiography are important. The risk of periprocedural stroke in left atrial and transcatheter mitral valve procedures is not negligible. Pharmacological therapy with antithrombotic agents before, during, or after structural heart interventions is important to mitigate the risk of stroke, especially the long-term risk. More prospective studies are needed to assess the efficacy of CEPD in such procedures.

Infective Endocarditis by Biofilm-Producing Methicillin-Resistant Staphylococcus aureus-Pathogenesis, Diagnosis, and Management

Infective endocarditis (IE) is a life-threatening condition with increasing global incidence, primarily caused by Staphylococcus aureus, especially methicillin-resistant strains (MRSA). Biofilm formation by S. aureus is a critical factor in pathogenesis, contributing to antimicrobial resistance and complicating the treatment of infections involving prosthetic valves and cardiovascular devices. Biofilms provide a protective matrix for MRSA, shielding it from antibiotics and host immune defenses, leading to persistent infections and increased complications, particularly in cases involving prosthetic materials. Clinical manifestations range from acute to chronic presentations, with complications such as heart failure, embolic events, and neurological deficits. Diagnosis relies on the Modified Duke Criteria, which have been updated to incorporate modern cardiovascular interventions and advanced imaging techniques, such as PET/CT (positron emission tomography, computed tomography), to improve the detection of biofilm-associated infections. Management of MRSA-associated IE requires prolonged antimicrobial therapy, often with vancomycin or daptomycin, needing a combination of antimicrobials in the setting of prosthetic materials and frequently necessitates surgical intervention to remove infected prosthetic material or repair damaged heart valves. Anticoagulation remains controversial, with novel therapies like dabigatran showing potential benefits in reducing thrombus formation. Despite progress in treatment, biofilm-associated resistance poses ongoing challenges. Emerging therapeutic strategies, including combination antimicrobial regimens, bacteriophage therapy, antimicrobial peptides (AMPs), quorum sensing inhibitors (QSIs), hyperbaric oxygen therapy, and nanoparticle-based drug delivery systems, offer promising approaches to overcoming biofilm-related resistance and improving patient outcomes. This review provides an overview of the pathogenesis, current management guidelines, and future directions for treating biofilm-related MRSA IE.

Long-term survival after TAVI in low-flow, low-gradient aortic valve stenosis

BACKGROUND

In patients undergoing transcatheter aortic valve implantation (TAVI), the presence of a low-flow, low-gradient (LFLG) status has been associated with higher mortality at short-term follow-up.

AIMS

We aimed to evaluate long-term survival after TAVI in patients with classical (cLFLG) and paradoxical LFLG (pLFLG) aortic stenosis (AS) compared to high-gradient (HG)-AS.

METHODS

Patients undergoing TAVI at our centre with a hypothetical minimum 5-year follow-up were divided into 3 groups: (1) HG-AS (mean gradient [MG] >40 mmHg), (2) cLFLG-AS (MG <40 mmHg, ejection fraction [EF] <50%), and (3) pLFLG-AS (MG <40 mmHg, EF ≥50%). The primary endpoint of the study was all-cause mortality. Propensity score-weighted survival analysis was performed to adjust for possible baseline confounders.

RESULTS

A total of 574 subjects were included (73% HG-AS, 15% pLFLG-AS, 11% cLFLG-AS). The median survival time was 4.8 years, with a maximum of 12.3 years. Patients with cLFLG-AS presented the highest baseline cardiovascular risk. At unadjusted survival analysis, patients with cLFLG-AS showed the worst long-term prognosis, with a rapid decrease in survival within the first year, while pLFLG- and HG-AS patients presented similar survival rates (p=0.023). At weighted long-term analysis, cLFLG- and HG-AS had similar survival rates. Baseline EF was not related to long-term mortality, while patients with a post-TAVI left ventricular ejection fraction (LVEF) improvement >10% lived significantly longer (p=0.02).

CONCLUSIONS

Classical LFLG-AS patients had lower long-term survival rates as compared to pLFLG-AS and HG-AS patients. However, after adjustment for possible baseline confounders, a low-flow status per se did not have an impact on long-term mortality after TAVI. Post-TAVI LVEF recovery was associated with improved long-term outcome.

Prevention of left ventricular outflow tract obstruction in transapical mitral valve replacement: the MitraCut procedure

BACKGROUND

The MitraCut procedure employs beating heart transapical (TA) cannulation and endoscopic scissors for dividing the anterior mitral leaflet (AML) to prevent left ventricular outflow tract (LVOT) obstruction in transapical transcatheter mitral valve replacement (TA-TMVR).

AIMS

We present the first multicentre experience of the MitraCut procedure prior to TA-TMVR to prevent LVOT obstruction.

METHODS

In 6 European centres, the clinical outcomes of all 13 high-risk patients who had undergone the MitraCut procedure during TA-TMVR procedures were retrospectively reviewed regarding technical success, procedural details and outcome.

RESULTS

The MitraCut procedure was successfully completed in 11 patients with 1 cutting attempt, while 2 patients had 2 cutting attempts, with an average procedure duration of 9.0±5.4 min. No patient demonstrated postoperative LVOT obstruction, and all mitral valve (MV) prostheses were competent throughout the follow-up period. However, 1 patient developed a MitraCut-related paravalvular leak (PVL; technical success rate: 12/13). The mean LVOT gradient was 3.9±4.4 mmHg directly after valve expansion and 3.6±3.1 mmHg at follow-up. In-hospital and 30-day mortality were 0%. One patient experiencing MitraCut-related PVL was successfully treated by interventional PVL closure (reintervention rate: n=1). One patient died at 47 days due to cardiac arrhythmia, unrelated to the AML-directed procedure. The mean follow-up at the time of data analysis was 52±34 days.

CONCLUSIONS

The MitraCut procedure was effective and reproducible for preventing potential LVOT obstruction in TA-TMVR patients during its initial exploration in 6 European hospitals. Considerations regarding the scissors' characteristics, their handling and cut length are mandatory for safe performance of the procedure.

Impact of prior coronary artery bypass grafting and coronary lesion complexity on outcomes of transcatheter aortic valve replacement for severe aortic stenosis

OBJECTIVE

To investigate the impact of prior coronary artery bypass grafting (CABG) and coronary lesion complexity on transcatheter aortic valve replacement (TAVR) outcomes for aortic stenosis.

METHODS

Clinical outcomes of TAVR were retrospectively compared between patients with and without prior CABG, and between patients with prior CABG and without coronary artery disease (CAD). The impact of the CABG SYNTAX score was also evaluated in patients with prior CABG.

RESULTS

The study included 1042 patients with a median age and follow-up of 82 years and 25 (range: 0-72) months, respectively. Of these, 175 patients had a history of CABG, while 401 were free of CAD. Patients with prior CABG were more likely to be male and had higher rates of diabetes, peripheral artery disease and atrial fibrillation compared with patients without prior CABG. After 2 : 1 propensity score matching, all-cause mortality ( P  = 0.17) and the composite of all-cause mortality, stroke and coronary intervention ( P  = 0.16) were similar between patients with (n = 166) and without (n = 304) prior CABG. A 1 : 1 propensity score-matched analysis, however, showed lower rates of all-cause mortality ( P  = 0.04) and the composite outcome ( P  = 0.04) in patients with prior CABG (n = 134) compared with patients without CAD (n = 134). The median CABG SYNTAX score was 16 (interquartile range: 9.0-23), which was not associated with better/worse clinical outcomes in patients with prior CABG.

CONCLUSION

Prior CABG may positively affect mid-term TAVR outcomes for aortic stenosis compared with no CAD when adjusted for other comorbidities. The CABG SYNTAX score did not influence the prognosis after TAVR.

Early clinical and hemodynamic outcomes of balloon-expandable versus self-expanding transcatheter aortic valve replacement in patients with large aortic annulus: a study-level meta-analysis

Purpose

This study aimed to compare early clinical and hemodynamic outcomes of transcatheter aortic valve replacement (TAVR) in patients with severe aortic stenosis and large aortic annulus using either balloon-expandable valves (BEVs) or self-expanding valves (SEVs).

Methods

A comprehensive search of PubMed, Scopus, and the Cochrane Central Register of Controlled Trials was conducted through September 10, 2023, to perform a meta-analysis comparing the clinical outcomes of BEV versus SEV for large aortic annulus (annulus perimeter ≥ 80 mm).

Results

Seven studies (one propensity-matched study and six observational studies) met our eligibility criteria, including a total of 2167 patients (BEV, 1521; SEV, 646). The rates of procedural stroke (pooled odds ratio 0.55, 95% confidence interval 0.32-0.98), valve embolization (0.11, 0.05-0.24), need for second valve implantation (0.21, 0.17-0.26), permanent pacemaker implantation (0.43, 0.28-0.67), and aortic regurgitation ≥ moderate (0.23, 0.08-0.68) were significantly lower in the BEV group. Conversely, postoperative transvalvular gradient was significantly lower in the SEV group (pooled standard mean difference 0.55, 0.12-0.98). Subgroup analysis with newer-generation valves also showed significant differences in the need for second valve implantation and permanent pacemaker implantation, as well as aortic regurgitation ≥ moderate, favoring BEVs.

Conclusions

BEV provides better early outcomes in TAVR for large aortic annulus in terms of lower rates of stroke, valve embolization, need for second valve, permanent pacemaker implantation, and aortic regurgitation ≥ moderate. Conversely, SEV provides a better transvalvular gradient in the early period after TAVR.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12055-024-01770-1.

Three-Year Outcomes Following TAVR in Younger (<75 Years) Low-Surgical-Risk Severe Aortic Stenosis Patients

BACKGROUND

Transcatheter aortic valve replacement (TAVR) is an alternative to surgery in patients with severe aortic stenosis, but data are limited on younger, low-risk patients. This analysis compares outcomes in low-surgical-risk patients aged <75 years receiving TAVR versus surgery.

METHODS

The Evolut Low Risk Trial randomized 1414 low-risk patients to treatment with a supra-annular, self-expanding TAVR or surgery. We compared rates of all-cause mortality or disabling stroke, associated clinical outcomes, and bioprosthetic valve performance at 3 years between TAVR and surgery patients aged <75 years.

RESULTS

In patients <75 years, 352 were randomized to TAVR and 351 to surgery. Mean age was 69.1±4.0 years (minimum 51 and maximum 74); Society of Thoracic Surgeons Predicted Risk of Mortality was 1.7±0.6%. At 3 years, all-cause mortality or disabling stroke for TAVR was 5.7% and 8.0% for surgery (P=0.241). Although there was no difference between TAVR and surgery in all-cause mortality, the incidence of disabling stroke was lower with TAVR (0.6%) than surgery (2.9%; P=0.019), while surgery was associated with a lower incidence of pacemaker implantation (7.1%) compared with TAVR (21.0%; P<0.001). Valve reintervention rates (TAVR 1.5%, surgery 1.5%, P=0.962) were low in both groups. Valve performance was significantly better with TAVR than surgery with lower mean aortic gradients (P<0.001) and lower rates of severe prosthesis-patient mismatch (P<0.001). Rates of valve thrombosis and endocarditis were similar between groups. There were no significant differences in rates of residual ≥moderate paravalvular regurgitation.

CONCLUSIONS

Low-risk patients <75 years treated with supra-annular, self-expanding TAVR had comparable 3-year all-cause mortality and lower disabling stroke compared with patients treated with surgery. There was significantly better valve performance in patients treated with TAVR.

REGISTRATION

URL: https://clinicaltrials.gov; Unique identifier: NCT02701283.

Outcomes and Complications of Mitral and Tricuspid Transcatheter Edge-to-edge Repair

In the realm of innovative medical procedures, TEER (transcatheter edge-to-edge repair) has emerged as a promising field, showcasing significant growth and advancements. Mitral TEER has been performed for the last two decades; in contrast, tricuspid TEER is newer, with long-term outcomes pending. This article aims to provide a comprehensive review of the current literature, with a primary focus on outcomes and potential complications associated with both procedures. Both procedures carry a low risk of complications when done by experienced providers. A team approach involving specialists in cardiology, cardiothoracic surgery, cardiac imaging and heart failure ensures comprehensive care. A unified approach encompassing preprocedural workup, risk assessment, and standardised care throughout the procedure and recovery contributes to successful outcomes.

Device therapies for heart failure with reduced ejection fraction: a new era

Even with significant advancements in the treatment modalities for patients with heart failure (HF), the rates of morbidity and mortality associated with HF are still high. Various therapeutic interventions, including cardiac resynchronization therapy, Implantable Cardiovascular-Defibrillators, and left ventricular assist devices, are used for HF management. Currently, more research and developments are required to identify different treatment modalities to reduce hospitalization rates and improve the quality of life of patients with HF. In relation to this, various non-valvular catheter-based therapies have been recently developed for managing chronic HF. These devices target the pathophysiological processes involved in HF development including neurohumoral activation, congestion, and left ventricular remodeling. The present review article aimed to discuss the major transcatheter devices used in managing chronic HF. The rationale and current clinical developmental stages of these interventions will also be addressed in this review.

Prevalence and contributing factors associated with tricuspid regurgitation among patients underwent echocardiography assessment

BACKGROUND

Tricuspid regurgitation (TR) is common in patients evaluated by echocardiography. However, the prevalence and contributing factors of the disease remain limited. This hospital-based study was designed to analyze adult patients first diagnosed with tricuspid regurgitation by Doppler echocardiography to determine the prevalence and characteristics of clinically meaningful TR.

METHODS

A total of 22,317 patients over the age of 18 who underwent echocardiography at the Cardiac Ultrasound Center of the First Affiliated Hospital of Guangdong Pharmaceutical University from July 1, 2015 to December 31, 2019 were collected. We collected basic information about the patients, including age, gender, history of heart disease, etc. Patients with valvular heart disease were assessed by transthoracic echocardiography. According to the degree of regurgitation and regurgitation, TR was divided into 6 grades (0-5). Pericardial effusion was recorded and bilateral atrial and ventricular diameters were measured. Logistic regression analysis was used to assess risk factors for significant TR (≥ grade 2 reflux).

RESULTS

A total of 2299 significant TR cases were found in people over 18 years old, accounting for 10.3% of the total population. The occurrence of TR was found to be closely related to age. The prevalence rates of significant TR in different groups were: 3.3% in the younger than 45-year-old group, 4.1% in the 46-55-year-old group, 5.8% in the 56-65-year-old group, 10.1% in the 66-75-year-old group, and the prevalence of significant TR rose directly to 22.3% in patients over 75-year-old group. Further logistic regression analysis showed that male, age, pacemaker, congenital heart disease, pericardial effusion, pulmonary hypertension, mitral regurgitation, left ventricular diastolic dysfunction and aortic regurgitation were associated with the occurrence of significant TR. Both RVD and RA-1 were effective predictors of significant TR, with RVD ≥ 33.5 mm having a sensitivity of 0.638, specificity of 0.675, and ROC curve area of 0.722. The sensitivity of RA1 ≥ 45.5 mm was 0.652, the specificity was 0.699, and the area under the ROC curve was 0.736.

CONCLUSIONS

TR is common in people undergoing echocardiography. Gender, age, pacemaker implantation, congenital heart disease, pericardial effusion, pulmonary hypertension, mitral insufficiency, and aortic insufficiency are the influencing factors of TR.

Absolute coronary flow and microvascular resistance before and after transcatheter aortic valve implantation

BACKGROUND

Severe aortic stenosis (AS) is associated with left ventricular (LV) remodelling, likely causing alterations in coronary blood flow and microvascular resistance.

AIMS

We aimed to evaluate changes in absolute coronary flow and microvascular resistance in patients with AS undergoing transcatheter aortic valve implantation (TAVI).

METHODS

Consecutive patients with AS undergoing TAVI with non-obstructive coronary artery disease in the left anterior descending artery (LAD) were included. Absolute coronary flow (Q) and microvascular resistance (Rμ) were measured in the LAD using continuous intracoronary thermodilution at rest and during hyperaemia before and after TAVI, and at 6-month follow-up. Total myocardial mass and LAD-specific mass were quantified by echocardiography and cardiac computed tomography. Regional myocardial perfusion (QN) was calculated by dividing absolute flow by the subtended myocardial mass.

RESULTS

In 51 patients, Q and R were measured at rest and during hyperaemia before and after TAVI; in 20 (39%) patients, measurements were also obtained 6 months after TAVI. No changes occurred in resting and hyperaemic flow and resistance before and after TAVI nor after 6 months. However, at 6-month follow-up, a notable reverse LV remodelling resulted in a significant increase in hyperaemic perfusion (QN,hyper: 0.86 [interquartile range {IQR} 0.691.06] vs 1.20 [IQR 0.99-1.32] mL/min/g; p=0.008; pre-TAVI and follow-up, respectively) but not in resting perfusion (QN,rest: 0.34 [IQR 0.30-0.48] vs 0.47 [IQR 0.36-0.67] mL/min/g; p=0.06).

CONCLUSIONS

Immediately after TAVI, no changes occurred in absolute coronary flow or coronary flow reserve. Over time, the remodelling of the left ventricle is associated with increased hyperaemic perfusion.

Feasibility and Safety of Post-Transcatheter Aortic Valve Replacement Coronary Revascularization Guided by Stress Cardiac Imaging

Background: Systematic revascularization of asymptomatic coronary artery stenosis before transcatheter aortic valve replacement (TAVR) is controversial. Purpose: The purpose of this study was to evaluate the feasibility and safety of functional evaluation of coronary artery disease (CAD) followed by selective ischemia-guided percutaneous coronary revascularization following TAVR. Methods: This prospective, bi-centric, single-arm, open-label trial included all patients with severe aortic stenosis (AS) eligible for TAVR and with significant CAD defined as ≥1 coronary stenosis ≥ 70%. Patients with left main stenosis ≥ 50%, proximal left anterior descending artery (LAD) stenosis ≥ 90% or > class 2 Canadian Classification Society (CCS) angina were excluded. Myocardial ischemia was evaluated by stress cardiac imaging one month after TAVR. The primary endpoint was a composite of all-cause death, stroke, major bleeding (Bleeding Academic Research Consotium ≥ 3), major vascular complication (Valve Academic Research Consortium 3 criteria), acute coronary syndrome (ACS) and hospitalization for cardiac causes within 6 months of receiving TAVR. Results: Between June 2020 and June 2022, 64 patients were included in this study. The mean age was 84 ± 5.2 years. CAD mostly involved LAD (n = 27, 42%) with frequent multivessel disease (n = 30, 47%) and calcified lesions (n = 39, 61%). Stress cardiac imaging could be achieved in 70% (n = 46) of the patients, while 30% (n = 18) did not attend the stress test. Significant myocardial ischemia was observed in only three patients (4.5%). At 6-month follow-up, fifteen patients (23%) reached the primary endpoint, including death in six patients (9%), stroke in three patients (5%) and major bleeding in three patients (5%). ACS was observed in only two patients (3%) but both had severe coronary stenosis (≥90%) and did not refer for stress imaging for personal reasons. Hospital readmission (n = 27, 41%) was mostly related to non-cardiac causes (n = 17, 27%). Conclusions: In patients with asymptomatic CAD scheduled to undergo TAVR, a selective ischemia-guided coronary revascularization after TAVR seems to be safe, with a very low rate of ACS and few cases of myocardial ischemia requiring revascularization, despite low adherence to medical follow-up in this elderly population. This strategy could be evaluated in a randomized study.

Real-time analysis of conduction disturbances during TAVR with the CARA monitor

BACKGROUND

The occurrence of conduction disturbances (CDs) remains the most frequent complication of transcatheter aortic valve replacement (TAVR). However, little is known about the timing of electrocardiogram (ECG) changes and CDs during the TAVR procedure.

OBJECTIVE

The objective of this study was to describe ECG changes throughout the TAVR procedure using the CARA monitor.

METHODS

This was a multicenter study including 196 prospectively enrolled patients without preexisting CDs undergoing TAVR. All patients were monitored with the CARA system, which uses a 12-lead ECG to measure PQ and QRS intervals, QRS axis, and variations with each heartbeat at every step: baseline, wire insertion, pre-dilatation, valve deployment, post-dilatation, and end of procedure.

RESULTS

PQ and QRS intervals progressively increased throughout the procedure, with a cumulative increase from 169.2 ± 20.0 ms to 186.0 ± 31.6 ms (P < .001) for the PQ interval and from 101.3 ± 10.5 ms to 126.0 ± 25.4 ms (P < .001) for the QRS interval, from baseline to the end of the procedure. A significant increase in the number of patients with left axis deviation was observed (7.7% at baseline vs 31.8% at end of procedure; P < .001). A total of 161 (82.1%) patients exhibited at least 1 CD episode (PQ >200 ms, QRS ≥120 ms, advanced heart block) during the procedure, with most episodes occurring during pre-dilatation and valve implantation maneuvers.

CONCLUSION

The CARA system facilitated real-time ECG monitoring, detecting subtle and progressive changes during TAVR. ECG changes occurred at each step, with most patients experiencing CDs, especially during pre-dilatation and valve implantation. The potential clinical impact of monitoring ECG dynamics and timing for early detection of severe CDs should be explored in future studies.

Aortic regurgitation: from mechanisms to management

Aortic regurgitation (AR) is a common clinical disease associated with significant morbidity and mortality. Investigations based largely on non-invasive imaging are pivotal in discerning the severity of disease and its impact on the heart. Advances in technology have contributed to improved risk stratification and to our understanding of the pathophysiology of AR. Surgical aortic valve replacement is the predominant treatment. However, its use is limited to patients with an acceptable surgical risk profile. Transcatheter aortic valve implantation is an alternative treatment. However, this therapy remains in its infancy, and further data and experience are required. This review article on AR describes its prevalence, mechanisms, diagnosis and treatment.

Outcomes of transcatheter aortic valve implantation for native aortic valve regurgitation

BACKGROUND

Large datasets of transcatheter aortic valve implantation (TAVI) for pure aortic valve regurgitation (PAVR) are scarce.

AIMS

We aimed to report procedural safety and long-term clinical events (CE) in a contemporary cohort of PAVR patients treated with new-generation devices (NGD).

METHODS

Patients with grade III/IV PAVR enrolled in the FRANCE-TAVI Registry were selected. The primary safety endpoint was technical success (TS) according to Valve Academic Research Consortium 3 criteria. The co-primary endpoint was defined as a composite of mortality, heart failure hospitalisation and valve reintervention at last follow-up.

RESULTS

From 2015 to 2021, 227 individuals (64.3% males, median age 81.0 [interquartile range {IQR} 73.5-85.0] years, with EuroSCORE II 6.0% [IQR 4.0-10.9]) from 41 centres underwent TAVI with NGD, using either self-expanding (55.1%) or balloon-expandable valves (44.9%; p=0.50). TS was 85.5%, with a non-significant trend towards increased TS in high-volume activity centres. A second valve implantation (SVI) was needed in 8.8% of patients, independent of valve type (p=0.82). Device size was ≥29 mm in 73.0% of patients, post-procedure grade ≥III residual aortic regurgitation was rare (1.2%), and the permanent pacemaker implantation (PPI) rate was 36.0%. At 30 days, the incidences of mortality and reintervention were 8.4% and 3.5%, respectively. The co-primary endpoint reached 41.6% (IQR 34.4-49.6) at 1 year, increased up to 61.8% (IQR 52.4-71.2) at 4 years, and was independently predicted by TS, with a hazard ratio of 0.45 (95% confidence interval: 0.27-0.76); p=0.003.

CONCLUSIONS

TAVI with NGD in PAVR patients is efficient and reasonably safe. Preventing the need for an SVI embodies the major technical challenge. Larger implanted valves may have limited this complication, outweighing the increased risk of PPI. Despite successful TAVI, PAVR patients experience frequent CE at long-term follow-up.

Percutaneous Valvular and Structural Heart Disease Interventions. 2024 Core Curriculum of the European Association of Percutaneous Cardiovascular Interventions (EAPCI) of the ESC in collaboration with the European Association of Cardiovascular Imaging (EACVI) and the Cardiovascular Surgery Working Group (WG CVS) of the European Society of Cardiology

The percutaneous treatment of structural, valvular, and non-valvular heart disease (SHD) is rapidly evolving. The Core Curriculum (CC) proposed by the EAPCI describes the knowledge, skills, and attitudes that define competency levels required by newly trained SHD interventional cardiologists (IC) and provides guidance for training centres. SHD ICs are cardiologists who have received complete interventional cardiology training. They are multidisciplinary team specialists who manage adult SHD patients from diagnosis to follow-up and perform percutaneous procedures in this area. They are competent in interpreting advanced imaging techniques and master planning software. The SHD ICs are expected to be proficient in the aortic, mitral, and tricuspid areas. They may have selective skills in either the aortic area or mitral/tricuspid areas. In this case, they must still have common transversal competencies in the aortic, mitral, and tricuspid areas. Additional SHD domain competencies are optional. Completing dedicated SHD training, aiming for full aortic, mitral, and tricuspid competencies, requires at least 18 months. For full training in the aortic area, with basic competencies in mitral/tricuspid areas, the training can be reduced to 1 year. The same is true for training in the mitral/tricuspid area, with competencies in the aortic area. The SHD IC CC promotes excellence and homogeneous training across Europe and is the cornerstone of future certifications and patient protection. It may be a reference for future CC for national associations and other SHD specialities, including imaging and cardiac surgery.

Antithrombotic therapy for transcatheter structural heart intervention

Percutaneous transcatheter structural heart interventions have considerably expanded within the last two decades, improving clinical outcomes and quality of life versus guideline-directed medical therapy for patients frequently ineligible for surgical treatment. Transcatheter structural heart interventions comprise valve implantation or repair and also occlusions of the patent foramen ovale, atrial septal defects and left atrial appendage. These procedures expose structural devices to arterial or venous blood flow with various rheological conditions leading to potential thrombotic complications and embolisation. Furthermore, these procedures may concern comorbid patients at high risk of both ischaemic and bleeding complications. This state-of-the-art review provides a description of the device-related thrombotic risk associated with these transcatheter structural heart interventions and of the current evidence-based guidelines regarding antithrombotic treatments. Gaps in evidence for each of the studied transcatheter interventions and the main ongoing trials are also summarised.

Non-Invasive Ultrasound Therapy for Severe Aortic Stenosis: Early Effects on the Valve, Ventricle, and Cardiac Biomarkers (A Case Series)

Background: Transcatheter aortic valve replacement (TAVR) was developed for inoperable patients with severe aortic stenosis. However, despite TAVR advancements, some patients remain untreated due to complex comorbidities, necessitating less-invasive approaches. Non-invasive ultrasound therapy (NIUT), a new treatment modality, has the potential to address this treatment gap, delivering short ultrasound pulses that create cavitation bubble clouds, aimed at softening embedded calcification in stiffened valve tissue. Methods: In the prospective Valvosoft® Serbian first-in-human study, we assessed the safety and efficacy of NIUT and its impact on aortic valve hemodynamics, on the left ventricle, and on systemic inflammation in patients with severe symptomatic aortic stenosis not eligible for TAVR or surgery. Results: Ten patients were included. Significant improvements were observed in hemodynamic parameters from baseline to one month, including a 39% increase in the aortic valve area (from 0.5 cm2 to 0.7 cm2, p = 0.001) and a 23% decrease in the mean transvalvular gradient (from 54 mmHg to 38 mmHg, p = 0.01). Additionally, left ventricular global longitudinal strain significantly rose, while global wasted work significantly declined at one month. A dose-response relationship was observed between treatment parameters (peak acoustic power, intensity spatial-peak pulse-average, and mean acoustic energy) and hemodynamic outcomes. NIUT was safely applied, with no clinically relevant changes in high-sensitivity troponin T or C-reactive protein and with a numerical, but not statistically significant, reduction in brain natriuretic peptide (from 471 pg/mL at baseline to 251 pg/mL at one month). Conclusions: This first-in-human study demonstrates that NIUT is safe and confers statistically significant hemodynamic benefits both on the valve and ventricle.

The impact of transcatheter aortic valve implantation (TAVI) on mitral regurgitation - a single center study

BACKGROUND

The coexistence of mitral regurgitation (MR) and severe aortic stenosis (AS) has been associated with worse outcomes in patients undergoing transcatheter aortic valve implantation (TAVI). Herein, the aim was to assess the etiology and degree of MR in an unselected TAVI population and investigate the impact of MR reduction at mid-term follow-up.

METHODS

Patients subjected to TAVI as a treatment for severe AS in a single center were retrospectively analyzed. The primary endpoint was the MR reduction after TAVI. The secondary endpoint was all-cause mortality and heart failure hospitalization at a 3-year follow-up.

RESULTS

Patients undergoing TAVI (n = 283) in the years 2017-2019 were screened for the presence of hemodynamically significant MR. Sixty-nine subjects (24.4%) with severe (16, 23.2%) and moderate (53, 76.8%) MR were included. The primary MR was predominant (39 subjects, 56.5%). The median age of the patients was 82 years. MR improved in 25 patients (36.2%, p < 0.001). Baseline severe MR was more prone to reduce (8 subjects, 50%) than moderate (17 subjects, 32.1%, p = 0.04). The primary MR improved in 14 patients (35.9%), while secondary in 11 patients (36.7%, p = 1). Patients showing MR reduction had lower mortality (8 vs. 29.55%, p = 0.047) and were less frequently hospitalized (20 vs. 45.45%, p = 0.03) at 3-year follow-up.

CONCLUSIONS

Hemodynamically significant MR improves after TAVI regardless of its etiology. Moreover, MR reduction after TAVI is associated with better clinical outcomes.

Navigating the Landscape of Coronary Microvascular Research: Trends, Triumphs, and Challenges Ahead

Coronary microvascular dysfunction (CMD) refers to structural and functional abnormalities of the microcirculation that impair myocardial perfusion. CMD plays a pivotal role in numerous cardiovascular diseases, including myocardial ischemia with non-obstructive coronary arteries, heart failure, and acute coronary syndromes. This review summarizes recent advances in CMD pathophysiology, assessment, and treatment strategies, as well as ongoing challenges and future research directions. Signaling pathways implicated in CMD pathogenesis include adenosine monophosphate-activated protein kinase/Krüppel-like factor 2/endothelial nitric oxide synthase (AMPK/KLF2/eNOS), nuclear factor erythroid 2-related factor 2/antioxidant response element (Nrf2/ARE), Angiotensin II (Ang II), endothelin-1 (ET-1), RhoA/Rho kinase, and insulin signaling. Dysregulation of these pathways leads to endothelial dysfunction, the hallmark of CMD. Treatment strategies aim to reduce myocardial oxygen demand, improve microcirculatory function, and restore endothelial homeostasis through mechanisms including vasodilation, anti-inflammation, and antioxidant effects. Traditional Chinese medicine (TCM) compounds exhibit therapeutic potential through multi-targeted actions. Small molecules and regenerative approaches offer precision therapies. However, challenges remain in translating findings to clinical practice and developing effective pharmacotherapies. Integration of engineering with medicine through microfabrication, tissue engineering and AI presents opportunities to advance the diagnosis, prediction, and treatment of CMD.

Prevalence, mortality, cost, and disparities in transcatheter mitral valve repair and replacement in cancer patients: Artificial intelligence and propensity score national 5-year analysis of 7495 procedures

INTRODUCTION

We conducted the first comprehensive evaluation of the therapeutic value and safety profile of transcatheter mitral edge-to-edge repair (TEER) and transcatheter mitral valve replacement (TMVR) in individuals concurrently afflicted with cancer.

METHODS

Utilizing the National Inpatient Sample (NIS) dataset, we analyzed all adult hospitalizations between 2016 and 2020 (n = 148,755,036). The inclusion criteria for this retrospectively analyzed prospective cohort study were all adult hospitalizations (age 18 years and older). Regression and machine learning analyses in addition to model optimization were conducted using ML-PSr (Machine Learning-augmented Propensity Score adjusted multivariable regression) and BAyesian Machine learning-augmented Propensity Score (BAM-PS) multivariable regression.

RESULTS

Of all adult hospitalizations, there were 5790 (0.004%) TMVRs and 1705 (0.001%) TEERs. Of the total TMVRs, 160 (2.76%) were done in active cancer. Of the total TEERs, 30 (1.76%) were done in active cancer. After the comparable rates of TEER/TMVR in active cancer in 2016, the prevalence of TEER/TMVR was significantly less in active cancer from 2017 to 2020 (2.61% versus 7.28% p < 0.001). From 2017 to 2020, active cancer significantly decreased the odds of receiving TEER or TMVR (OR 0.28, 95%CI 0.13-0.68, p = 0.008). In patients with active cancer who underwent TMVR/TEER, there were no significant differences in socio-economic disparities, mortality or total hospitalization costs.

CONCLUSION

The presence of malignancy does not contribute to increased mortality, length of stay or procedural costs in TMVR or TEER. Whereas the prevalence of TMVR has increased in patients with active cancer, the utilization of TEER in the context of active cancer is declining despite a growing patient population.

Failure of Surgical Aortic Valve Prostheses: An Analysis of Heart Team Decisions and Postoperative Outcomes

Objectives: To analyze Heart Team decisions and outcomes following failure of surgical aortic valve replacement (SAVR) prostheses. Methods: Patients undergoing re-operations following index SAVR (Redo-SAVR) and those undergoing valve-in-valve transcatheter aortic valve replacement (ViV-TAVR) following SAVR were included in this study. Patients who underwent index SAVR and/or Redo-SAVR for endocarditis were excluded. Data are presented as medians and 25th-75th percentiles, or absolute numbers and percentages. Outcomes were analyzed in accordance to the VARC-3 criteria. Results: Between 01/2015 and 03/2021, 53 patients underwent Redo-SAVR, 103 patients ViV-TAVR. Mean EuroSCORE II was 5.7% (3.5-8.5) in the Redo-SAVR group and 9.2% (5.4-13.6) in the ViV group. In the Redo-SAVR group, 12 patients received aortic root enlargement (22.6%). Length of hospital and ICU stay was longer in the Redo-SAVR group (p < 0.001; p < 0.001), PGmax and PGmean were lower in the Redo-SAVR group as compared to the ViV-TAVR group (18 mmHg (10-30) vs. 26 mmHg (19-38), p < 0.001) (9 mmHg (6-15) vs. 15 mmHg (9-21), p < 0.001). A higher rate of paravalvular leakage was seen in the ViV-TAVR group (p = 0.013). VARC-3 Early Safety were comparable between the two populations (p = 0.343). Survival at 1 year and 5 years was 82% and 36% in the ViV-TAVR cohort and 84% and 77% in the Redo-SAVR cohort. The variables were patient age (OR 1.061; [95% CI 1.020-1.104], p = 0.004), coronary heart disease (OR 2.648; [95% CI 1.160-6.048], p = 0.021), and chronic renal insufficiency (OR 2.711; [95% CI 1.160-6.048], p = 0.021) showed a significant correlation to ViV-TAVR. Conclusions: Heart Team decisions are crucial in the treatment of patients with degenerated aortic bioprostheses and lead to a low mortality in both treatment paths thanks to patient-specific therapy planning. ViV-TAVR offers a treatment for elderly or intermediate-risk profile patients with comparable short-term mortality. However, this therapy is associated with increased pressure gradients and a high prevalence of paravalvular leakage. Redo-SAVR enables the surgical treatment of concomitant cardiac pathologies and allows anticipation for later VIV-TAVR by implanting the largest possible valve prostheses.

Durability of transcatheter aortic valve implantation

Transcatheter aortic valve implantation (TAVI) is now utilised as a less invasive alternative to surgical aortic valve replacement (SAVR) across the whole spectrum of surgical risk. Long-term durability of the bioprosthetic valves has become a key goal of TAVI as this procedure is now considered for younger and lower-risk populations. The purpose of this article is to present a state-of-the-art overview on the definition, aetiology, risk factors, mechanisms, diagnosis, clinical impact, and management of bioprosthetic valve dysfunction (BVD) and failure (BVF) following TAVI with a comparative perspective versus SAVR. Structural valve deterioration (SVD) is the main factor limiting the durability of the bioprosthetic valves used for TAVI or SAVR, but non-structural BVD, such as prosthesis-patient mismatch and paravalvular regurgitation, as well as valve thrombosis or endocarditis may also lead to BVF. The incidence of BVF related to SVD or other causes is low (<5%) at midterm (5- to 8-year) follow-up and compares favourably with that of SAVR. The long-term follow-up data of randomised trials conducted with the first generations of transcatheter heart valves also suggest similar valve durability in TAVI versus SAVR at 10 years, but these trials suffer from major survivorship bias, and the long-term durability of TAVI will need to be confirmed by the analysis of the low-risk TAVI versus SAVR trials at 10 years.

Clinical outcomes and predictors of transapical transcatheter mitral valve replacement: the Tendyne Expanded Clinical Study

BACKGROUND

Transcatheter mitral valve replacement (TMVR) is a therapeutic option for patients with severe mitral regurgitation (MR) who are ineligible for conventional surgery. There are limited data on the outcomes of large patient cohorts treated with TMVR.

AIMS

This study aimed to investigate the outcomes and predictors of mortality for patients treated with transapical TMVR.

METHODS

This analysis represents the clinical experience of all patients enrolled in the Tendyne Expanded Clinical Study. Patients with symptomatic MR underwent transapical TMVR with the Tendyne system between November 2014 and June 2020. Outcomes and adverse events up to 2 years, as well as predictors of short-term mortality, were assessed.

RESULTS

A total of 191 patients were treated (74.1±8.0 years, 62.8% male, Society of Thoracic Surgeons Predicted Risk of Mortality 7.7±6.6%). Technical success was achieved in 96.9% (185/191), and there were no intraprocedural deaths. At 30-day, 1- and 2-year follow-up, the rates of all-cause mortality were 7.9%, 30.8% and 40.5%, respectively. Complete MR elimination (MR <1+) was observed in 99.3%, 99.1% and 96.3% of patients, respectively. TMVR treatment resulted in consistent improvement of New York Heart Association Functional Class and quality of life up to 2 years (both p<0.001). Independent predictors of early mortality were age (odds ratio [OR] 1.11; p=0.003), pulmonary hypertension (OR 3.83; p=0.007), and institutional experience (OR 0.40; p=0.047).

CONCLUSIONS

This study investigated clinical outcomes in the full cohort of patients included in the Tendyne Expanded Clinical Study. The Tendyne TMVR system successfully eliminated MR with no intraprocedural deaths, resulting in an improvement in symptoms and quality of life. Continued refinement of clinical and echocardiographic risks will be important to optimise longitudinal outcomes.