Dissemination of Transcatheter Aortic Valve Replacement in the United States

Advancing Health Equity in the Cardiovascular Device Life Cycle

Despite advancements in diagnostics and therapeutics for cardiovascular disease, significant health disparities persist among patients from historically marginalized racial and ethnic groups, women, individuals who are socioeconomically under-resourced or underinsured, and those living in rural communities. While transcatheter interventions have revolutionized the treatment landscape in cardiology, populations bearing the greatest burden of disease continue to face inequitable access and poorer outcomes. A notable gap in the literature concerns the role of modern approaches to cardiovascular device innovation in shaping and perpetuating health disparities. Health equity has been declared one of the top strategic initiatives for 2022 to 2025 by the Food and Drug Administration Center for Devices and Radiological Health, underscoring the need for greater attention, dialogue, and targeted interventions in this space. This narrative review uses the cardiovascular device life cycle as a conceptual framework to enhance understanding and guide future efforts to mitigate disparities in the field of interventional cardiology. Drawing on illustrative examples from interventional cardiology, we examine current practices in cardiovascular device regulation and approval, clinical trial evaluation, adoption patterns, and postprocedural outcomes with the aim of uncovering potential mechanisms of disparities and identifying opportunities for targeted interventions.

Comparative Efficacy of Antithrombotic Strategies in Bioprosthetic Aortic Valve Replacement: A Network Meta-Analysis

This meta-analysis evaluates outcomes in patients undergoing bioprosthetic aortic valve replacement (bAVR), comparing different antithrombotic strategies. We conducted a systematic search through May 2024. A standard meta-analysis compared outcomes between patients who received anticoagulation therapy (AC) and those who did not. Therapeutic categories were subdivided into four groups: AC alone, AC with antiplatelet therapy (AP), AP alone, and no antithrombotic therapy. A network meta-analysis was performed for these categories. The review included 16 studies, comprising a total of 59,054 patients. There was no significant difference in all-cause mortality rates (HR: hazard ratio [95% CI: confidence interval] = 0.98 [0.77-1.25], P = .88) or thromboembolic events (HR [95% CI] = 0.91 [0.65-1.28], P = .60) between patients with and without AC. However, bleeding events were significantly higher in patients receiving AC (HR [95% CI] = 1.55 [1.20-2.00], P < .01). Network meta-analysis showed that AP alone was associated with lower mortality rates compared with other therapeutic categories. Additionally, AP alone was associated with fewer bleeding events compared with AC alone and AC with AP. This meta-analysis suggests that AP alone in patients undergoing bAVR is associated with superior outcomes compared with other antithrombotic strategies.

Impacts of Hospital Volume and Patient-Hospital Distances on Outcomes of Older Adults Receiving Percutaneous Microaxial Ventricular Assist Devices for Cardiogenic Shock

BACKGROUND

Percutaneous microaxial ventricular assist devices (pVADs) have the potential to reduce mortality of patients with cardiogenic shock (CS). However, the association between the distribution of pVAD-performing centers and outcomes of CS has not been explored.

METHODS

This observational study included Medicare fee-for-service beneficiaries aged 65 to 99 years treated with pVAD for CS from 2016 to 2020. It examined the associations between patient outcomes and 2 exposure variables: hospitals' procedure volumes of pVAD and patient-hospital distances (in quintiles [Qn]). We developed Cox proportional hazards regression for 180-day mortality and heart failure readmission rates, and multivariable logistic regression for in-hospital outcomes, adjusting for patient demographics, comorbidities, concomitant treatments, and hospital characteristics, including CS volume, teaching status, and the ability to perform extracorporeal membrane oxygenation.

RESULTS

A total of 6637 patients with CS underwent pVAD at 1041 hospitals, with the annualized hospital volume ranging widely from 0.3 to 55.6 cases/year. Patients treated at higher-volume centers experienced lower 180-day mortality compared with those treated at lower-volume centers (Qn1=reference; Qn2: adjusted hazard ratio [aHR], 0.88 [95% CI, 0.79-0.97]; Qn3: aHR, 0.88 [95% CI, 0.79-0.98]; Qn4: aHR, 0.88 [95% CI, 0.78-0.99]; Qn5: aHR, 0.84 [95% CI, 0.74-0.95]; P for trend, 0.026), while we found no evidence that patient-hospital distances were associated with mortality (Qn1=reference; Qn2: aHR, 0.99 [95% CI, 0.89-1.09]; Qn3: aHR, 0.94 [95% CI, 0.85-1.04]; Qn4: aHR, 1.01 [95% CI, 0.92-1.11]; Qn5: aHR, 0.91 [95% CI, 0.82-1.01]; P for trend, 0.160). We found no evidence that the hospital volume and patient-hospital distances were associated with in-hospital bleeding, intracranial hemorrhage, or renal replacement therapy initiation.

CONCLUSIONS

Hospital volume was more strongly associated with mortality than patient-hospital distances, suggesting that rational distribution of pVAD-performing centers while ensuring adequate procedure volumes may optimize patient mortality.

Valvular Heart Disease-Related Mortality Between Middle- and High-Income Countries During 2000 to 2019

Background

Valvular heart disease (VHD) management has evolved rapidly in recent decades, but disparities in health care access persist among countries with varying socioeconomic backgrounds.

Objectives

The purpose of this study was to investigate global mortality trends from VHD and assess the difference between middle- and high-income countries.

Methods

We obtained mortality data from the World Health Organization Mortality Database for VHD and its subgroups (rheumatic valvular disease [RVD], infective endocarditis [IE], aortic stenosis [AS], and mitral regurgitation [MR]) from 2000 to 2019. Age-specific and age-standardized mortality rates per 100,000 persons in middle- and high-income countries were calculated, and trends were analyzed using joinpoint regression.

Results

A total of 93 countries (42 middle-income and 51 high-income) were included in the analysis. Both middle- and high-income countries showed an increasing trend in crude VHD mortality rate. In middle-income countries, the age-standardized VHD-related mortality rate was constant (0.0%/year), with decreasing RVD (-2.7%/year) and increasing IE, AS, and MR (0.8%/year, 2.0%/year, and 2.2%/year, respectively). In high-income countries, the age-standardized VHD-related mortality rate was decreasing (-0.6%/year). However, there was a rapid increase in mortality rate from IE in age ≤39 years after 2009 (7.0%/year). Moreover, there was a decreasing mortality rate from AS after 2015 but an increasing rate from MR after 2013, particularly in age ≥80 years.

Conclusions

Our study identified a rising burden of VHD-related mortality worldwide. The distribution and trends of VHD mortality differed between middle- and high-income countries. Further investigation is needed to understand the underlying etiology of these varying mortality trends in VHD and its subgroups.

Cerebrovascular Events in Patients Undergoing Transfemoral Transcatheter Aortic Valve Implantation: A Pooled Patient-Level Study

BACKGROUND

Cerebrovascular events remain one of the most devastating complications of transcatheter aortic valve implantation (TAVI). Data from real-world contemporary cohorts on longitudinal trends and outcomes remain limited. The aim of this study was to assess incidence, temporal trends, predictors, and outcomes of cerebrovascular events following transfemoral TAVI.

METHODS AND RESULTS

The CENTER2 (Cerebrovascular Events in Patients Undergoing Transcatheter Aortic Valve Implantation With Balloon-Expandable Valves Versus Self-Expandable Valves 2) study includes patients undergoing TAVI between 2007 and 2022. The database contains pooled patient-level data from 10 clinical studies. A total of 24 305 patients underwent transfemoral TAVI (mean age 81.5±6.7 years, 56% women, median Society of Thoracic Surgeon Predicted Risk of Mortality 4.9% [3.1%-8.5%]). Of these patients, 2.2% (n=534) experienced stroke in the first 30 days after TAVI, and 40 (0.4%) had a transient ischemic attack. Stroke rates remained stable during the treatment period (2007-2010: 2.1%, 2011-2014: 2.5%, 2015-2018: 2.1%, 2019-2022: 2.1%; Ptrend=0.28). Moreover, 30-day cerebrovascular event rates were similar across Society of Thoracic Surgeon Predicted Risk of Mortality risk categories: 2.1% in low-risk, 2.6% in intermediate-risk, and 2.5% in high-risk patients (P=0.21). Mortality was higher in patients with 30-day stroke than without at 30 days (20.3% versus 4.7%; odds ratio, 5.1 [95% CI, 4.1-6.5]; P<0.001) and at 1 year (44.1% versus 15.0%; hazard ratio, 3.5 [95% CI, 3.0-4.2]; P<0.001). One-year mortality rates for stroke did not decline over time (2007-2010: 46.9%, 2011-2014: 46.0%, 2015-2018: 43.0%, 2019-2022: 39.1%; Ptrend=0.32). At 1 year, 7.0% of patients undergoing TAVI had a stroke.

CONCLUSIONS

In 24 305 patients who underwent transfemoral TAVI, 30-day cerebrovascular event incidence remained ≈ 2.2% between 2007 and 2022. Thirty-day stroke rates were similar throughout Society of Thoracic Surgeon Predicted Risk of Mortality risk categories. Mortality rates after stroke remain high.

REGISTRATION

URL: https://www.clinicaltrials.gov; Unique identifier: NCT03588247.

Aortic valve replacement for aortic stenosis: Influence of centre volume on TAVR adoption rates and outcomes in France

BACKGROUND

Transcatheter (TAVR) has supplanted surgical (SAVR) aortic valve replacement (AVR).

AIM

To evaluate whether adoption of this technology has varied according to centre volume at the nationwide level.

METHODS

From an administrative hospital-discharge database, we collected data on all AVRs performed in France between 2007 and 2019. Centres were divided into terciles based on the annual number of SAVRs performed in 2007-2009 ("before TAVR era").

RESULTS

A total of 192,773 AVRs (134,662 SAVRs and 58,111 TAVRs) were performed in 47 centres. The annual number of AVRs and TAVRs increased significantly and linearly in low-volume (<152 SAVRs/year; median 106, interquartile range [IQR] 75-129), middle-volume (152-219 SAVRs/year; median 197, IQR 172-212) and high-volume (>219 SAVRs/year; median 303, IQR 268-513) terciles, but to a greater degree in the latter (+14, +16 and +24 AVRs/centre/year and +16, +19 and +31 TAVRs/centre/year, respectively; PANCOVA<0.001). Charlson Comorbidity Index and in-hospital death rates declined from 2010 to 2019 in all terciles (all Ptrend<0.05). In 2017-2019, after adjusting for age, sex and Charlson Comorbidity Index, there was a trend toward lower death rates in the high-volume tercile (P=0.06) for SAVR, whereas death rates were similar for TAVR irrespective of tercile (P=0.27). Similar results were obtained when terciles were defined based on number of interventions performed in the last instead of the first 3years. Importantly, even centres in the lowest-volume tercile performed a relatively high number of interventions (150 TAVRs/year/centre).

CONCLUSIONS

In a centralized public healthcare system, the total number of AVRs increased linearly between 2007 and 2019, mostly due to an increase in TAVR, irrespective of centre volume. Progressive declines in patient risk profiles and death rates were observed in all terciles; in 2017-2019 death rates were similar in all terciles, although lower in high-volume centres for SAVR.

Geographical and socioeconomic disparities in post-transcatheter aortic valve replacement pacemaker placement

INTRODUCTION

Pacemaker (PPM) implantation is indicated for conduction abnormalities which can develop post-transcatheter aortic valve replacement (TAVR). However, whether post-TAVR PPM risk is associated with the geographical location of the hospital and socioeconomic status of the patient is not well established. Our goal was to explore geographical and socioeconomic disparities in post-TAVR PPM implantation.

METHODS

A retrospective cohort analysis was conducted using the National Inpatient Sample 2016-2020 with respective ICD-10 codes for TAVR and PPM implantation. A weighted multivariate logistic regression model was used to analyze prognostic outcomes.

RESULTS

The number of patients hospitalized for undergoing TAVR was 296,740, out of which 28,265 patients had PPM implantation (prevalence 9.5 %). Patients' demographics including sex, ethnicity, household income, and insurance were not associated with risk of post-TAVR PPM except age (OR 1.01, CI 1.07-12.5, p < 0.001). Compared to rural hospitals, urban non-teaching hospitals were associated with a higher risk of post-TAVR PPM (OR 2.09, 1.3-3.43, p = 0.003). Compared to New England hospitals (ME, NH, VT, MA, RI, CT), middle Atlantic hospitals (NY, NJ, PA) were associated with highest post-TAVR PPM risk (OR 1.54, CI 1.2-1.98, p < 0.001), followed by Pacific (AK, WA, OR, CA, HI), mountain (ID, MT, WY, NV, UT, CO, AZ, NM) and east north central US.

CONCLUSION

Patients' demographics including sex, ethnicity, household income, and insurance were not associated with the risk of post-TAVR PPM except for age. Compared to New England hospitals, Middle Atlantic hospitals were associated with the highest post-TAVR PPM risk followed by Pacific, Mountain, and East North Central US. Prospective studies with data on TAVR wait times, expertise of the interventional staff, and post-TAVR management and discharge planning are required to further explore the observed regional distribution of TAVR outcomes.

Geographic variation in aortic stenosis treatment and outcomes among Medicare beneficiaries in the United States

BACKGROUND

Transcatheter aortic valve replacement (TAVR) has changed the landscape of aortic stenosis (AS) management.

AIM

To describe and evaluate geographic variation in AS treatment and outcomes among a sample of Medicare beneficiaries.

METHODS

A retrospective analysis of administrative claims data was conducted on a 20% sample of Medicare fee-for-service beneficiaries aged 65 and older with a diagnosis of AS (2015-2018). Estimates of demographic, comorbidity, and healthcare resources were obtained from Medicare claims and the Dartmouth Atlas of Health Care at the hospital referral region (HRR), which represents regional tertiary medical care markets. Linear regression was used to explain HRR-level variation in rates of surgical aortic valve replacement (SAVR) and TAVR, and 1-year mortality and readmission rates.

RESULTS

A total of 740,899 beneficiaries with AS were identified with a median prevalence of AS of 39.9 per 1000 Medicare beneficiary years. The average HRR-level rate of SAVR was 26.3 procedures per 1000 beneficiary years and the rate of TAVR was 20.3 procedures per 1000 beneficiary years. HRR-level comorbidities and number of TAVR centers were associated with a lower SAVR rate. Demographics and comorbidities explained most of the variation in HRR-level 1-year mortality (15.2% and 18.8%) and hospitalization rates (20.5% and 16.9%), but over half of the variation remained unexplained.

CONCLUSION

Wide regional variation in the treatment and outcomes of AS was observed but were largely unexplained by patient factors and healthcare utilization. Understanding the determinants of AS treatment and outcomes can inform population health efforts for these patients.

Cardiac catheterization, coronary intervention, and wait times for transcatheter aortic valve replacement

OBJECTIVES

Prolonged wait times for transcatheter aortic valve replacement (TAVR) are associated with increased morbidity and mortality. The incidence and predictors of short TAVR wait times (STWT: defined as ≤ 30 days from referral to TAVR procedure) have not been defined. This study examined the impact of clinical characteristics, demographics, and pre-TAVR cardiac catheterization on wait times for TAVR.

METHODS

This was a retrospective observational analysis of 831 patients with severe aortic stenosis undergoing TAVR from 2019 to mid-2022 at the University of Vermont Medical Center. Demographics, timing of treatment [stratified by COVID-19 onset (1 March 2020)], TAVR center travel distance, baseline clinical factors, and process-related variables were analyzed to determine univariate STWT predictors (P < 0.10). Multivariable analysis was performed to determine independent STWT predictors.

RESULTS

Approximately 50% of TAVR patients in this study achieved a STWT. The proportion of patients with STWT was higher (54.7% vs. 45.2%; P = 0.008) after the onset of COVID-19 pandemic. STWT was not related to travel distance (P = 0.61). Patients with left ventricular ejection fraction (LVEF) > 60% were less likely to achieve STWT compared to patients with LVEF < 40% (OR 0.45, P = 0.003). Patients who required catheterization or percutaneous coronary intervention (PCI) before TAVR were significantly less likely to achieve STWT (OR 0.65, P = 0.01).

CONCLUSION

TAVR wait times were not affected by the COVID-19 pandemic or single rural TAVR center travel distance. Sicker patients were more likely to achieve STWT while catheterization/PCI before TAVR was associated with longer wait times.

Modeling the Association of Volume vs Composite Outcome Thresholds With Outcomes and Access to Transcatheter Aortic Valve Implantation in the US

Importance

Professional societies and the Centers for Medicare & Medicaid Services suggest volume thresholds to ensure quality in transcatheter aortic valve implantation (TAVI).

Objective

To model the association of volume thresholds vs spoke-and-hub implementation of outcome thresholds with TAVI outcomes and geographic access.

Design, Setting, and Participants

This cohort study included patients who enrolled in the US Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy registry. Site volume and outcomes were determined from a baseline cohort of adults undergoing TAVI between July 1, 2017, and June 30, 2020.

Exposures

Within each hospital referral region, TAVI sites were categorized by volume (<50 or ≥50 TAVIs per year) and separately by risk-adjusted outcome on the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy 30-day TAVI composite during the baseline period (July 2017 to June 2020). Outcomes of patients undergoing TAVIs from July 1, 2020, to March 31, 2022, were then modeled as though the patients had been treated at (1) the nearest higher volume (≥50 TAVIs per year) or (2) the best outcome site within the hospital referral region.

Main Outcomes and Measures

The primary outcome was the absolute difference in events between the adjusted observed and modeled 30-day composite of death, stroke, major bleeding, stage III acute kidney injury, and paravalvular leak. Data are presented as the number of events reduced under the above scenarios with 95% bayesian credible intervals (CrIs) and median (IQR) driving distance.

Results

The overall cohort included 166 248 patients with a mean (SD) age of 79.5 (8.6) years; 74 699 (47.3%) were female and 6657 (4.2%) were Black; 158 025 (95%) were treated in higher-volume sites (≥50 TAVIs) and 75 088 (45%) were treated in best-outcome sites. Modeling a volume threshold, there was no significant reduction in estimated adverse events (-34; 95% CrI, -75 to 8), while the median (IQR) driving time from the existing site to the alternate site was 22 (15-66) minutes. Transitioning care to the best outcome site in a hospital referral region resulted in an estimated 1261 fewer adverse outcomes (95% CrI, 1013-1500), while the median (IQR) driving time from the original site to the best site was 23 (15-41) minutes. Directionally similar findings were observed for Black individuals, Hispanic individuals, and individuals from rural areas.

Conclusions and Relevance

In this study, compared with the current system of care, a modeled outcome-based spoke-and-hub paradigm of TAVI care improved national outcomes to a greater extent than a simulated volume threshold, at the cost of increased driving time. To improve quality while maintaining geographic access, efforts should focus on reducing site variation in outcomes.

Redo Surgical Aortic Valve Replacement After Prior Transcatheter Versus Surgical Aortic Valve Replacement

BACKGROUND

Aortic stenosis treatment should consider risks and benefits for lifetime management. Although the feasibility of redo transcatheter aortic valve replacement (TAVR) remains unclear, concerns are emerging regarding reoperation after TAVR.

OBJECTIVES

The authors sought to define comparative risk of surgical aortic valve replacement (SAVR) after prior TAVR or SAVR.

METHODS

Data on patients undergoing bioprosthetic SAVR after TAVR and/or SAVR were extracted from the Society of Thoracic Surgeons Database (2011-2021). Overall and isolated SAVR cohorts were analyzed. The primary outcome was operative mortality. Risk adjustment using hierarchical logistic regression as well as propensity score matching for isolated SAVR cases were performed.

RESULTS

Of 31,106 SAVR patients, 1,126 had prior TAVR (TAVR-SAVR), 674 had prior SAVR and TAVR (SAVR-TAVR-SAVR), and 29,306 had prior SAVR (SAVR-SAVR). Yearly rates of TAVR-SAVR and SAVR-TAVR-SAVR increased over time, whereas SAVR-SAVR was stable. The TAVR-SAVR patients were older, with higher acuity, and with greater comorbidities than other cohorts. The unadjusted operative mortality was highest in the TAVR-SAVR group (17% vs 12% vs 9%, respectively; P < 0.001). Compared with SAVR-SAVR, risk-adjusted operative mortality was significantly higher for TAVR-SAVR (OR: 1.53; P = 0.004), but not SAVR-TAVR-SAVR (OR: 1.02; P = 0.927). After propensity score matching, operative mortality of isolated SAVR was 1.74 times higher for TAVR-SAVR than SAVR-SAVR patients (P = 0.020).

CONCLUSIONS

The number of post-TAVR reoperations is increasing and represent a high-risk population. Yet even in isolated SAVR cases, SAVR after TAVR is independently associated with increased risk of mortality. Patients with life expectancy beyond a TAVR valve and unsuitable anatomy for redo-TAVR should consider a SAVR-first approach.

Association between institutional volume of transcatheter mitral valve repair and readmission rates: A report from the National Readmission Database

BACKGROUND

Transcatheter edge-to-edge repair (TEER) of the mitral valve has become an established therapy for certain patients with mitral regurgitation. However, little is known about the association between institutional volume variations and long-term outcomes using a large-scale database. Our study aimed to describe the institutional variations of TEER and also investigate its association with 180-day readmission rates.

METHODS

We conducted a retrospective cohort study of TEER performed in the US from the 2019 Nationwide Readmission Database. We divided the patients according to the tertiles based on volume of TEER (Q1 [lowest]-Q3 [highest]) and evaluated the association with 180-day readmission rates.

RESULTS

A total of 4922 patients (mean age 76.8 ± 10.4 years, and 54.5% male) who underwent TEER at 250 institutions were included in the analyses. There was substantial variation in the number of TEER performed annually across institutions (median 25.0 [11.6-52.5] cases). Readmission within 6-months following TEER was 37.0%, mainly due to heart failure. Higher institutional volume was associated with a reduced incidence of 180-day readmissions (HR of Q3 0.58 95%CI 0.38-0.90, vs Q1; p = 0.015). This association was more prominent in non-elective cases (HR of Q3 0.33 95%CI 0.15-0.72, vs Q1; p = 0.005).

CONCLUSIONS

Using a nationally representative contemporary database, our study found substantial institutional variation in volume of TEER cases. Higher institutional volume was associated with a decreased risk of 180-day readmission rate, particularly in non-elective cases. Our study suggests the importance of highly skilled heart teams when treating patients who need urgent transcatheter intervention for mitral regurgitation.

Safety and performance of a novel cerebral embolic protection device for transcatheter aortic valve implantation: the PROTEMBO C Trial

BACKGROUND

Stroke remains a feared complication associated with transcatheter aortic valve implantation (TAVI). Embolic cerebral injury occurs in the majority of TAVI cases and can lead to cognitive dysfunction.

AIMS

The PROTEMBO C Trial evaluated the safety and performance of the ProtEmbo Cerebral Protection System in TAVI patients.

METHODS

Forty-one patients were enrolled in this single-arm study conducted at 8 European centres. The primary safety endpoint was the rate of VARC 2-defined major adverse cardiac and cerebrovascular events (MACCE) at 30 days; the primary performance endpoint was the composite rate of technical success versus performance goals (PG). Secondary endpoints included brain diffusion-weighted magnetic resonance imaging (DW-MRI), new lesion volume, and the rate of death or all strokes compared to historical data.

RESULTS

Thirty-seven of 41 enrolled patients underwent TAVI with the ProtEmbo device (intention-to-treat [ITT] population). Both primary endpoints were met. MACCE at 30 days was 8.1% (upper limit of the 95% confidence interval [CI]: 21.3% vs PG 25%; p=0.009), and technical success was 94.6% (lower limit of the 95% CI: 82.3% vs PG 75%; p=0.003). New DW-MRI lesion volumes with ProtEmbo were smaller than in historical data, and 87% of patients completing MRI follow-up had no single lesion >150 mm3. There was 1 stroke in a patient in whom the device was removed prematurely before TAVI completion.

CONCLUSIONS

The PROTEMBO C Trial met its primary safety and performance endpoints compared to prespecified historical PGs. Patients had smaller brain lesion volumes on DW-MRI compared to prior series and no larger single lesions. These results warrant further evaluation of the ProtEmbo in a larger randomised controlled trial (RCT).

Cardiac Surgery 2021 Reviewed

PubMed displayed more than 35,000 hits for the search term "cardiac surgery AND 2021." We used the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) approach and selected relevant publications for a results-oriented summary. As in recent years, we reviewed the fields of coronary and conventional valve surgery and their overlap with their interventional alternatives. COVID reduced cardiac surgical activity around the world. In the coronary field, the FAME 3 trial dominated publications by practically repeating SYNTAX, but with modern stents and fractional flow reserve (FFR)-guided percutaneous coronary interventions (PCIs). PCI was again unable to achieve non-inferiority compared with coronary artery bypass graft surgery (CABG) in patients with triple-vessel disease. Survival advantages of CABG over PCI could be linked to a reduction in myocardial infarctions and current terminology was criticized because the term "myocardial revascularization" is not precise and does not reflect the infarct-preventing collateralization effect of CABG. In structural heart disease, new guidelines were published, providing upgrades of interventional treatments of both aortic and mitral valve disease. While for aortic stenosis, transcatheter aortic valve implantation (TAVI) received a primary recommendation in older and high-risk patients; recommendations for transcatheter mitral edge-to-edge treatment were upgraded for patients considered inappropriate for surgery. For heart team discussions it is important to know that classic aortic valve replacement currently provides strong signals (from registry and randomized evidence) for a survival advantage over TAVI after 5 years. This article summarizes publications perceived as important by us. It can neither be complete nor free of individual interpretation, but provides up-to-date information for decision-making and patient information.

Standardized Aortic Valve Neocuspidization for Treatment of Aortic Valve Diseases

BACKGROUND

Aortic valve replacement is the traditional surgical treatment for aortic valve diseases, yet standardized aortic valve neocuspidization (AVNeo) is a promising alternative that is gaining popularity. The purpose of this article is to review the available published literature of AVNeo using glutaraldehyde-treated autologous pericardium, also known as the Ozaki procedure, including indications, outcomes, potential benefits, and modes of failure for the reconstructed valve.

METHODS

A comprehensive literature search was performed using keywords related to aortic valve repair, AVNeo, or Ozaki procedure. All articles describing performance of AVNeo were reviewed.

RESULTS

Reported early mortality after AVNeo varies from 0% to 5.88%. The largest cohort of patients in the literature includes 850 patients with an inhospital mortality rate of 1.88%. Cumulative incidence of aortic valve reoperation was 4.2% in the largest series. Reoperation was uncommon and mainly due to infective endocarditis or degeneration of the reconstructed valve (most commonly due to aortic valve regurgitation, rather than stenosis).

CONCLUSIONS

Aortic valve neocuspidization is a versatile and standardized alternative to aortic valve replacement with a biological prosthesis. Early to midterm outcomes from a number of centers are excellent and demonstrate the safety and durability of the procedure. Long-term outcomes and clinical trial data are necessary to determine which patients benefit the most from this procedure.