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Aims Obstructive hypertrophic cardiomyopathy (oHCM) is characterized by dynamic obstruction of the left ventricular (LV) outflow tract (LVOT). Although this may be mediated by interplay between the hypertrophied septal wall, systolic anterior motion of the mitral valve, and papillary muscle abnormalities, the mechanistic role of LV shape is still not fully understood. This study sought to identify the LV end-diastolic morphology underpinning oHCM. Methods and results Cardiovascular magnetic resonance images from 2398 HCM individuals were obtained as part of the NHLBI HCM Registry. Three-dimensional LV models were constructed and used, together with a principal component analysis, to build a statistical shape model capturing shape variations. A set of linear discriminant axes were built to define and quantify (Z-scores) the characteristic LV morphology associated with LVOT obstruction (LVOTO) under different physiological conditions and the relationship between LV phenotype and genotype. The LV remodelling pattern in oHCM consisted not only of basal septal hypertrophy but a combination with LV lengthening, apical dilatation, and LVOT inward remodelling. Salient differences were observed between obstructive cases at rest and stress. Genotype negative cases showed a tendency towards more obstructive phenotypes both at rest and stress. Conclusions LV anatomy underpinning oHCM consists of basal septal hypertrophy, apical dilatation, LV lengthening, and LVOT inward remodelling. Differences between oHCM cases at rest and stress, as well as the relationship between LV phenotype and genotype, suggest different mechanisms for LVOTO. Proposed Z-scores render an opportunity of redefining management strategies based on the relationship between LV anatomy and LVOTO.

The aims of this study were to characterize the interplay between mixed aortic valve disease (MAVD) phenotypes (defined by concomitant severities of aortic stenosis and aortic regurgitation) and left ventricular global longitudinal strain (LV-GLS), and to assess the prognostic utility of LV-GLS in MAVD.Little is known about the way LV-GLS separates MAVD phenotypes and if it is associated with their outcomes.This observational cohort study evaluated 783 consecutive adult patients with left ventricular ejection fraction ≥50% and MAVD, which was defined as coexisting with at least moderate aortic stenosis and at least moderate aortic regurgitation. We measured the conventional echocardiographic variables and average LV-GLS from apical long, 2- and 4-chamber views. The primary endpoint was all-cause mortality.Mean age of patients was 69 ± 15 years, and 58% were male. Mean LV-GLS was -14.7 ± 2.9%. In total, 458 patients (59%) underwent aortic valve replacement at a median period of 50 days (25th to 75th percentile range: 6 to 560 days). During a median follow-up period of 5.6 years (25th to 75th percentile range: 1.8 to 9.4 years), 391 patients (50%) died. When stratified patients into tertiles according to LV-GLS values, patients with worse LV-GLS had worse outcomes (p 0.001). LV-GLS was independently associated with mortality (hazard ratio: 1.09; 95% confidential intervals: 1.04 to 1.14; p 0.001), with the relationship between LV-GLS and mortality being linear.LV-GLS is associated with all-cause mortality. LV-GLS may be useful for risk stratification in patients with MAVD.

Background A bioprosthesis- or mechanical-prosthesis–containing polyester graft (composite graft) is standard surgical management for aortic root aneurysms (Bentall procedure), but particularly in the young patient in whom a bioprosthesis is likely to deteriorate and a mechanical prosthesis mandates life-long anticoagulation, valve-sparing procedures have been devised. One such procedure involves reimplantation of the native aortic valve in the polyester graft. With focus on selecting the optimum procedure for young relatively asymptomatic patients, we compared outcomes of reimplantation of the aortic valve versus the Bentall procedure and identified factors influencing outcomes. Methods From January 2000 to January 2017, 643 adults age ≤ 70 with tricuspid aortic valves underwent elective aortic root replacement with either reimplantation (n = 448/70%) or a composite valve graft (Bentall) procedure (n = 195/30%). Outcomes were compared in 100 propensity-matched pairs. Results Patients with fewer symptoms, less aortic regurgitation (AR), higher left ventricular ejection fraction, and smaller cross-sectional aortic area/height ratio had a higher likelihood of valve repair with reimplantation (all p Conclusion Excellent aortic valve reimplantation results versus Bentall lead us to recommend reimplantation more often in patients who present with even moderately severe or severe AR and significantly enlarged aortic roots.

BACKGROUND: Patterns of diffusion of TAVR in the US and its relation to racial disparities in TAVR utilization remain unknown. METHODS: We identified TAVR hospitals in the continental US from 2012-2017 using Medicare database and mapped them to Hospital Referral Regions (HRR). We calculated driving distance from each residential ZIP code to the nearest TAVR hospital and calculated the proportion of the U.S. population, in general and by race, that lived

Patients with atrial fibrillation (AF) have risk factors that predispose to thoracic aneurysmal disease (TAD) and atherosclerosis. In this study in patients with AF, we assessed the occurrence of incidental TAD and assessed if a validated predictive score used to predict AF, the CHARGE-AF score, was associated with greater aortic dimensions. We also assessed the prevalence of coronary calcification. We conducted a cross-sectional study of 1,000 consecutive patients with AF undergoing chest multidetector CT during evaluation for pulmonary vein isolation. A dilated aortic root or ascending aorta (AA, dimension/ body surface area >2.05 cm/m2) were found in 195 (20%). A total of 12 (1%) had significant aortic aneurysmal enlargement of > 5.0 cm. Advancing age, a bicuspid aortic valve, hypertension, and male gender were associated with increased aortic dimensions. Aortic root dimensions increased linearly (p < 0.001) and ascending aortic dimensions increased nonlinearly across CHARGE-AF deciles (p < 0.001). Nearly two-thirds (63%) had coronary calcification, 38% of whom were not on lipid-lowering therapy. In conclusion, in patients with AF undergoing gated chest CT, 1 in 5 had previously undetected TAD, with a small proportion having significantly aneurysmal dimensions approaching surgical thresholds. Risk factors previously established to increase the propensity to develop AF are also associated with increased TAD. These findings raise the need to consider a surveillance strategy for TAD in patients with AF, particularly in those with other risk factors for aortic disease. A high prevalence of coronary calcium was also detected, representing an opportunity to optimize statin therapy in patients with AF.

Retrograde false lumen (FL) perfusion after thoracic endovascular aortic repair (TEVAR) for chronic dissection is a mode of treatment failure. Thrombosis of the FL is associated with favorable reverse remodeling. Objectives are to describe FL embolization (FLE) strategy and assess aortic remodeling and survival.From January 2009 to December 2017, 51 patients with chronic dissection underwent FLE, most after previous TEVAR. Devices included a combination of iliac plug (29 patients), coils (19 patients), or nitinol plug (3 patients). Computed tomography was performed before discharge, at 3 months, and annually (median follow-up 2 years [range, 1 month to 7 years]).After FLE, mean maximum aortic diameter decreased (64.2 ± 12 mm to 61.0 ± 13 mm; P = .03), true lumen diameter increased (24.7 ± 10 mm to 33.7 ± 8 mm; P.001), and FL diameter decreased (36.7 ± 12 mm to 25.6 ± 15 mm, P.001). For reverse remodeling, FL thrombosis with ≥10% decrease in diameter and ≥10% increase in true lumen diameter was achieved in 20 (39.2%; 16 primarily, 4 secondarily). Nine patients progressed after the first FLE: persistent FL flow with increase in aortic diameter and underwent repeat FLE with complete thrombosis (n = 4) or open thoracoabdominal completion (n = 5). A total of 26 patients had indeterminate response (FL thrombosis without change in maximum diameter), and none have required reoperation. Six patients had complete obliteration of the entire FL. At last follow-up, 42 (82%) patients were alive. Three deaths were related to aortic pathology.FLE is an important endovascular adjunct to TEVAR promoting reverse aortic remodeling in select patients with chronic aortic dissection and persistent retrograde FL perfusion.

Background Quantitative cardiovascular magnetic resonance T1-mapping is increasingly used for myocardial tissue characterization. However, the lack of standardization limits direct comparability between centers and wider roll-out for clinical use or trials. Purpose To develop a quality assurance (QA) program assuring standardized T1 measurements for clinical use. Methods MR phantoms manufactured in 2013 were distributed, including ShMOLLI T1-mapping and reference T1 and T2 protocols. We first studied the T1 and T2 dependency on temperature and phantom aging using phantom datasets from a single site over 4 years. Based on this, we developed a multiparametric QA model, which was then applied to 78 scans from 28 other multi-national sites. Results T1 temperature sensitivity followed a second-order polynomial to baseline T1 values (R2 > 0.996). Some phantoms showed aging effects, where T1 drifted up to 49% over 40 months. The correlation model based on reference T1 and T2, developed on 1004 dedicated phantom scans, predicted ShMOLLI-T1 with high consistency (coefficient of variation 1.54%), and was robust to temperature variations and phantom aging. Using the 95% confidence interval of the correlation model residuals as the tolerance range, we analyzed 390 ShMOLLI T1-maps and confirmed accurate sequence deployment in 90%(70/78) of QA scans across 28 multiple centers, and categorized the rest with specific remedial actions. Conclusions The proposed phantom QA for T1-mapping can assure correct method implementation and protocol adherence, and is robust to temperature variation and phantom aging. This QA program circumvents the need of frequent phantom replacements, and can be readily deployed in multicenter trials., Highlights • CMR T1 correlated with reference T1 and T2; this derives the QA model for T1-map. • The proposed QA model is robust to temperature variations and phantom aging. • This QA method requires no frequent phantom replacements. • The T1-map QA program can be readily deployed in multicenter trials.

Septal reduction therapy (SRT), surgical myectomy or alcohol ablation, is recommended for obstructive hypertrophic cardiomyopathy (oHCM) patients with intractable symptoms despite maximal medical therapy, but is associated with morbidity and mortality.This study sought to determine whether the oral myosin inhibitor mavacamten enables patients to improve sufficiently to no longer meet guideline criteria or choose to not undergo SRT.Patients with left ventricular (LV) outflow tract (LVOT) gradient ≥50 mm Hg at rest/provocation who met guideline criteria for SRT were randomized, double blind, to mavacamten, 5 mg daily, or placebo, titrated up to 15 mg based on LVOT gradient and LV ejection fraction. The primary endpoint was the composite of the proportion of patients proceeding with SRT or who remained guideline-eligible after 16 weeks' treatment.One hundred and twelve oHCM patients were enrolled, mean age 60 ± 12 years, 51% men, 93% New York Heart Association (NYHA) functional class III/IV, with a mean post-exercise LVOT gradient of 84 ± 35.8 mm Hg. After 16 weeks, 43 of 56 placebo patients (76.8%) and 10 of 56 mavacamten patients (17.9%) met guideline criteria or underwent SRT, difference (58.9%; 95% CI: 44.0%-73.9%; P 0.001). Hierarchical testing of secondary outcomes showed significant differences (P 0.001) favoring mavacamten, mean differences in post-exercise peak LVOT gradient -37.2 mm Hg; ≥1 NYHA functional class improvement 41.1%; improvement in patient-reported outcome 9.4 points; and NT-proBNP and cardiac troponin I between-groups geometric mean ratio 0.33 and 0.53.In oHCM patients with intractable symptoms, mavacamten significantly reduced the fraction of patients meeting guideline criteria for SRT after 16 weeks. Long-term freedom from SRT remains to be determined. (A Study to Evaluate Mavacamten in Adults With Symptomatic Obstructive HCM Who Are Eligible for Septal Reduction Therapy [VALOR-HCM]; NCT04349072).

BACKGROUND Mitral annular calcification (MAC) is prevalent in the aging population, with recent renewed interest regarding its associations with cardiovascular risk factors, outcomes, and influence on valvular heart disease and interventions. This meta-analysis aimed to report the relationships between MAC and cardiovascular mortality and morbidity events. METHODS Relevant studies were searched from PubMed, Cochrane, and Embase databases until November 30, 2019. Associations between MAC as a binary variable with death and cardiovascular events were pooled using random-effects models. The main outcomes of interest were all-cause and cardiovascular mortality, myocardial infarction, stroke, heart failure, atrial fibrillation, and procedural outcomes. RESULTS Among 799 article abstracts and 122 full-text articles screened, 26 (16 prospective and 10 retrospective) studies totaling 35 070 subjects were analyzed. MAC was associated with higher all-cause death, hazard ratio (95% confidence interval) 1.76 (1.43-2.22), and cardiovascular mortality 1.85 (1.45-23.5). It also positively correlated with myocardial infarction 1.48 (1.22-1.79), stroke 1.51 (1.22-2.05), incidental heart failure 1.55 (1.30-1.84), atrial fibrillation 1.75 (1.43-2.15), and their composite, major adverse cardiovascular events (MACE). Finally, conversion to mitral valve replacement at time of cardiac surgery was more in patients with MAC than without MAC, with odds ratio (95% confidence interval) 2.82 (1.28-6.18). CONCLUSION Mitral annular calcification was overall associated with higher rates of death, and both individual and composite cardiovascular events. The presence of increasingly encountered MAC has significant clinical implications for cardiovascular risk assessment and valvular interventions.

OBJECTIVE To assess outcomes of concomitant ablation for atrial fibrillation (AF) in patients with preoperative AF undergoing septal myectomy for hypertrophic obstructive cardiomyopathy. METHODS From 2005 to 2016, 67 patients underwent concomitant ablation for AF and septal myectomy and had a follow-up beyond a 3-month blanking period. Ablation strategy (pulmonary vein isolation [PVI], modified Cox-maze III [CM-III], or Cox-maze IV [CM-IV]) was tailored to preoperative AF burden, with high AF burden defined as persistent AF or need for cardioversion. AF recurrence was analyzed as a time-related event and predictors of recurrence identified using a random forest methodology. RESULTS A total of 38 patients (57%) had low AF burden and 29 (43%) high burden. Patients with low AF burden most frequently underwent PVI (68%). Patients with high AF burden more frequently underwent CM-III (62%) or CM-IV (35%). Besides the preoperative AF burden, baseline characteristics were similar between patients receiving CM-III, CM-IV, and PVI. After surgery, the maximum provoked left ventricular outflow tract (LVOT) gradient decreased from 99 ± 34 to 18 ± 11mm Hg (P

The ISCHEMIA trial investigated two major principles in the therapy of coronary artery disease (CAD), i.e., symptom relief and improvement of prognosis. Specifically, it was designed to answer the question of whether, after ruling out left main stenosis, a routine interventional strategy in addition to optimal medical therapy can improve clinical outcome. Overall, this hypothesis could not be confirmed. Nevertheless, the trial yields interesting new aspects in the field of cardiac imaging. As a noninvasive diagnostic approach for individuals with suspected coronary artery disease, two different concepts are available: stress testing for ischemia (single-photon emission computed tomography, positron emission tomography, cardiac magnetic resonance imaging, stress echocardiography) and anatomic visualization of coronary artery stenosis by coronary computed tomography (CT) angiography (coronary CTA). While there was no randomized comparison between these two approaches in ISCHEMIA, the good outcome achieved by using coronary CTA as a "gatekeeper" to randomization supports the potential of coronary CTA as a diagnostic tool-both as first- and as second-line-when CAD is suspected. However, the trial also raises new questions in the field of cardiac imaging that need to be addressed in future studies.

AIMS The aim of this study was to evaluate the performance of risk stratification models (RSMs) in predicting short-term mortality after transcatheter aortic valve replacement (TAVR). METHODS AND RESULTS MEDLINE and Scopus were queried to identify studies which validated RSMs designed to assess 30-day or in-hospital mortality after TAVR. Discrimination and calibration were assessed using C-statistics and observed/expected ratios (OERs), respectively. C-statistics were pooled using a random-effects inverse-variance method, while OERs were pooled using the Peto odds ratio. A good RSM is defined as one with a C-statistic >0.7 and an OER close to 1.0. Twenty-four studies (n=68,215 patients) testing 11 different RSMs were identified. Discrimination of all RSMs was poor (C-statistic

Hypertrophic cardiomyopathy (HCM) is a common inherited cardiac condition, which typically manifests as left ventricular hypertrophy. A small subset of patients with HCM have an increased risk of sudden cardiac death (SCD) from ventricular arrhythmias. Risk of SCD can be effectively reduced following implantation of implantable cardiac defibrillators (ICD), although this treatment carries a risk of complications such as inappropriate shocks. With this in mind, we turn to advances in cardiac imaging to guide risk stratification for SCD and to select the appropriate individual who may benefit from ICD implantation. In this review, we have taken the opportunity to briefly summarise the role of imaging in the diagnosis of HCM before focusing on how specific imaging features influence risk of SCD in patients with HCM.

Background Wearable wrist-monitors offer an unobtrusive way to acquire heart rate data in an efficient manner. Previous work in this field has focused on studying healthy subjects during exercise but has yet to assess the efficacy of these devices in patients suffering from common cardiac arrhythmias such as atrial fibrillation. Objective The objective of this pilot study was to assess the accuracy of the Apple Watch heart rate monitor in fifty patients experiencing atrial fibrillation compared to telemetry. Results Results from this pilot clinical study demonstrated a correlation coefficient of 0.7 between all readings on the Apple Watch and telemetry. Furthermore, the Apple Watch assessed heart rate more accurately in patients who were in atrial fibrillation than in those that were not (rc = 0.86, patients in AF, vs. rc = 0.64, patients not in AF). Clinical Impact The presented data from this pilot study suggests that caution should be noted before using the Apple Watch 4 wearable wrist monitor to monitor heart rate in patients with cardiac arrhythmias such as atrial fibrillation., Apple Watch Series 4 includes a built in ECG sensor to assess heart rhythm and detects heart rate via photoplethysmography (PPG). A green light source (~540 nm) illuminates the skin and a photodetector measures the intensity of the reflected light. Heart rate is then estimated based on the pulsatile changes in reflected light induced by fluctuations in blood flow every heartbeat.

Objectives This study sought to determine whether baseline left ventricular global longitudinal strain (LV-GLS) and changes in left ventricular ejection fraction (LVEF) in a subgroup of subjects at post-operative follow-up added prognostic value in patients undergoing aortic valve (AV) surgery. Background In patients with chronic severe aortic regurgitation (AR) and preserved LVEF, sensitive markers are needed to decide timing of AV surgery. Methods This was an observational study in 865 patients (asymptomatic/mildly symptomatic, 52 ± 15 years of age, 79% men) with ≥3+ chronic AR and preserved LVEF of ≥50% who underwent AV surgery between 2003 and 2015. All patients had baseline echocardiography (and LV-GLS imaging), whereas 285 patients underwent post-operative echocardiography (including LV-GLS). Primary outcome was mortality. Results Only 478 patients (56%) patients had preoperative LV-GLS values better than −19%, despite a mean LVEF of 57 ± 4%. At a median 38 days, 632 patients underwent AV replacement, whereas 233 patients had AV repair. At a median follow-up of 6.95 (interquartile range [IQR]: 5.2 to 9.1) years, 105 patients (12%) died (2% in-hospital deaths). A higher proportion of patients with baseline LV-GLS grades worse than −19% died versus those whose LV-GLS score was better (15% vs. 10%; p Conclusions In patients with ≥3+ chronic AR and preserved LVEF undergoing AV surgery, a baseline LV-GLS value worse than −19% was associated with reduced survival. In a subgroup of patients who returned for 3- and 12-month follow-up examinations, persistently impaired LV-GLS was associated with increased mortality.

The impact of pre-existing atrial fibrillation (AF) on outcomes after noncardiac surgery is not clear.We aimed to study the impact of AF on the risk of adverse outcomes after noncardiac surgery in a nationwide cohort.We identified Medicare beneficiaries admitted for noncardiac surgery from 2015 to 2019 and divided the study cohort into 2 groups: with and without AF. Noncardiac surgery was classified into vascular, thoracic, general, genitourinary, gynecological, orthopedics and neurosurgery, breast, head and neck, and transplant. We used propensity score matching on exact age, sex, race, urgency and type of surgery, revised cardiac risk index (RCRI) and CHAThe study cohort included 8,635,758 patients who underwent noncardiac surgery (16.4% with AF). Patients with AF were older, more likely to be men, and had higher prevalence of comorbidities. After propensity score matching, AF was associated with higher risk of mortality (OR: 1.31; 95% CI: 1.30-1.32), heart failure (OR: 1.31; 95% CI: 1.30-1.33), and stroke (OR: 1.40; 95% CI: 1.37-1.43) and lower risk of myocardial infarction (OR: 0.81; 95% CI: 0.79-0.82). Results were consistent in subgroup analysis by sex, race, type of surgery, and all strata of RCRI and CHAPre-existing AF is independently associated with postoperative adverse outcomes after NCS.

Background: Socioeconomic disadvantage is a strong determinant of adverse outcomes in patients with heart failure. However, the contribution of community-level economic distress to adverse outcomes in heart failure may differ across races and ethnicities. Methods: Patients of self-reported Black, White, and Hispanic race and ethnicity hospitalized with heart failure between 2014 and 2019 were identified from the Medicare MedPAR Part A 100% Files. We used patient-level residential ZIP code to quantify community-level economic distress on the basis of the Distressed Community Index (quintile 5: economically distressed versus quintiles 1–4: nondistressed). The association of continuous and categorical measures (distressed versus nondistressed) of Distressed Community Index with 30-day, 6-month, and 1-year risk-adjusted mortality, readmission burden, and home time were assessed separately by race and ethnicity groups. Results: The study included 1 611 586 White (13.2% economically distressed), 205 840 Black (50.6% economically distressed), and 89 199 Hispanic (27.3% economically distressed) patients. Among White patients, living in economically distressed (versus nondistressed) communities was significantly associated with a higher risk of adverse outcomes at 30-day and 1-year follow-up. Among Black and Hispanic patients, the risk of adverse outcomes associated with living in distressed versus nondistressed communities was not meaningfully different at 30 days and became more prominent by 1-year follow-up. Similarly, in the restricted cubic spline analysis, a stronger and more graded association was observed between Distressed Community Index score and risk of adverse outcomes in White patients (versus Black and Hispanic patients). Furthermore, the association between community-level economic distress and risk of adverse outcomes for Black patients differed in rural versus urban areas. Living in economically distressed communities was significantly associated with a higher risk of mortality and lower home time at 1-year follow-up in rural areas but not urban areas. Conclusions: The association between community-level economic distress and risk of adverse outcomes differs across race and ethnic groups, with a stronger association noted in White patients at short- and long-term follow-up. Among Black patients, the association of community-level economic distress with a higher risk of adverse outcomes is less evident in the short term and is more robust and significant in the long-term follow-up and rural areas.

BACKGROUND Dobutamine stress echocardiography (DSE) is a useful tool for assessing low-gradient significant aortic stenosis (AS) and contractile reserve (CR), but its prognostic utility has become controversial in recent studies. We evaluated the impact of DSE on aortic valve physiological, structural and left ventricular parameters in low gradient AS. METHODS Consecutive patients undergoing DSE for low-gradient AS evaluation from September 2010 to July 2016 were retrospectively studied, and DSE findings divided into four groups with and without severe AS and CR. Relationships between left ventricular chamber quantification, CR, aortic valve Doppler during DSE and calcium score (by CT) were analysed. RESULTS There were 258 DSE studies performed on 243 patients, mean age 77.6±10.8 years and 183 (70.1%) were male. With increasing dobutamine dose, apart from systolic blood pressure, left ventricular ejection fraction, flow, cardiac power output and longitudinal strain magnitude, along with aortic valve area and mean aortic gradient all significantly increased (P

Background: Few studies have systematically assessed quality of life (QOL) in hypertrophic cardiomyopathy (HCM) patients not meeting the septal reduction therapy (SRT) threshold, but require avoiding isometric exertion and weightlifting. We prospectively studied a newly developed QOL instrument to examine the associations between patient characteristics and self-reported QOL scores in HCM patients not anticipated to undergo SRT for at least 6 months. Methods: A single-center, prospective sample of 51 adult HCM patients (54±14 years, mean interventricular septum thickness = 1.7±0.4cm, 65% with left ventricular outflow tract (LVOT) obstruction, mean provokable LVOT gradient 65±42 mmHg, 59% men) completed a baseline 70-item QOL instrument, adapted from validated QOL questionnaires. All patients signed informed consent. Results: Mean self-reported QOL scores (on a 5-point Likert scale with higher scores indicating higher QOL) were as follows: physical function (3.5±1), depression (3.7±1), anxiety (3.6±1), post-traumatic stress disorder (PTSD) (3.7±1), social function (4.1±1), spiritual acceptance of diagnosis (3.8±1), self-efficacy (4±1), and resilience (4±1). Men vs. women reported higher physical function (3.9±1 vs. 2.9±1), less depression (4±1 vs. 3.3±1), less anxiety (3.8±1 vs. 3.3±1), and higher social function (4.3±0.7 vs. 3.8±1) (all p Conclusion: In HCM patients not requiring SRT, higher physical function scores were significantly associated with a better self-perceived overall health. Being a woman, having LVOT obstruction, presence of a defibrillator and presence of symptoms was significantly associated with worse perceived physical and social function.

Introduction: We sought to study prevalence of conduction disease and permanent pacemaker (PPM) in patients presenting with radiation-associated cardiac disease (RACD) and its impact on long-term survival. Methods: We studied 699 patients with documented RACD (prior chest radiotherapy at a mean of 22 years prior) evaluated at a single center from 1998-2018. Conduction abnormalities and PPM at baseline were recorded, along with cardiac procedures performed during follow-up. Death was the primary endpoint. Results: Patients were divided into 4 groups: 1) no procedure during follow-up 2) 1 valve or coronary artery bypass grafting (CABG) or 1-valve+CABG surgery 3) Multivalve+/-CABG+/-aortic/pericardial surgery and 4)Trans catheter aortic valve replacement (TAVR). Relevant characteristics and outcomes are shown in Table. In total, 183 patients had a PPM (82 [45%] implanted during follow-up). Over a mean follow-up of 5±4 years (range 0-21 years), 370 patients (53%) patients died. On survival analysis, presence of PPM (HR 1.26 [1.03-1.54], p=0.03) was independently associated with higher long-term mortality; 109 (60%) patients with PPM died in the long-term vs. those without261 (51%, log-rank p-value=0.03). Conclusion: RACD patients have a high rate of mortality during longer-term follow-up, despite a low calculated preoperative risk. In addition, they have a high rate of conduction abnormalities with a high proportion requiring PPM, including at baseline, irrespective of need for a cardiac procedure. Presence of a PPM was independently associated with long-term risk of mortality.

Background: Transthoracic echocardiography (TTE) is the first-line imaging modality to evaluate isolated tricuspid regurgitation (TR), however comparisons with magnetic resonance imaging (MRI) measurements have seldomly been studied. We assessed the correlation, discriminative ability and derived a novel TTE-based algorithm using TR and right heart parameters to identify isolated severe TR by MRI. Methods: Isolated TR patients graded at least moderate-to-severe by TTE and undergoing MRI between January 2007-June 2019 were studied. TR and right heart parameters were analyzed by correlation, receiver-operative characteristics analysis and classification and regression tree algorithm for detection of severe TR by MRI (regurgitant volume > 45mL and/or fraction > 50%). Results: In 262 isolated TR patients, 108 (41.2%) had severe TR by MRI. There were moderate correlations and discrimination for most TTE-derived TR parameters and indexed right atrial volume (Pearson r=0.428-0.645) for TR quantification by MRI. This included a mean absolute and percentage difference of +10mL and +19% for regurgitant volume by TTE higher than MRI. However, there were none to modest correlations between TTE-derived right ventricle parameters with MRI-derived TR or right ventricle quantification. Key TTE parameters to identify severe TR by MRI in the decision tree regression algorithm were right atrial volume indexed >47cm 2 /m 2 , then effective regurgitant orifice area >0.45 cm 2 , and finally those with right ventricle free wall strain >-9.5% had the highest risk. Conclusion: TTE-derived TR and right atrial quantification had moderate correlation and discrimination of severe TR by CMR, from which a novel TTE-based decision tree algorithm was derived, while RV correlation was relatively poor between TTE and CMR.

Introduction: Health-related quality of life (QOL) outcomes in thoracic aortopathy (TA) patients who have not yet met the surgical threshold, but need significant lifestyle/weightlifting restrictions, are not well understood. We prospectively studied a newly developed QOL instrument to examine the associations between patient characteristics and self-reported QOL scores in TAA patients not anticipated to undergo aortic intervention for at least 6 months. Methods: All 128 adult TA patients (57±10 years, mean thoracic aortic diameter = 4.4±0.3cm, 77% male) were recruited prospectively as a single center and completed a baseline QOL instrument. The 70-item QOL instrument was adapted from validated QOL questionnaires. All patients signed informed consent. Results: Mean QOL scores for the eight scales of the instrument (range, 0 to 5, with 5 reflecting best function/QOL) were self-reported and as follows: physical function (4.2±0.8), depression (3.9±0.8), anxiety (3.8±0.9), post-traumatic stress disorder (PTSD) (4.1±0.9), social function (4.4±0.6), spiritual acceptance of diagnosis (3.6±0.7), self-efficacy (4.2±0.7), and resilience (4.1±0.6). Higher physical function score was associated with higher emotional (β=0.67, p Conclusion: In TA patients not requiring aortic surgery, higher physical, emotional, and social function scores were significantly associated with self-perceived overall health. However, the actual size had no significant association with these metrics. Further research is needed to elucidate trends of patient-reported QOL and their correlation to clinical/imaging changes.

Background: Socioeconomic (SE) disadvantage is a strong determinant of adverse outcomes in patients with HF. The contribution of SE disparities to adverse outcomes in HF may differ among Black vs. White patients and has not been well studied. Methods: Using the 100% CMS MedPAR data, Black and White patients hospitalized with HF between 2014 and 2017 were identified and stratified based on the distressed community index (DCI)—a measure of the SE disadvantage of residential ZIP codes on a continuous scale (range 0-100, see Fig. legend)—into two groups: SE distressed (Q5) vs. non-distressed (Q1-4). The rates of 30-day and 1-year mortality and readmission were compared across the distressed vs. non-distressed race groups. The adjusted association between DCI and risk of adverse outcomes was assessed separately across the race groups using adjusted hierarchical logistic regression models with restricted cubic splines. Results: The study included 1,238,537 White (14.8% distressed) and 190,721 Black (44.4% distressed) patients. White patients living in SE distressed communities had a significantly higher risk of adverse outcomes at 30-days and 1-year f/u (Fig. A). In contrast, among Black patients, the risk of adverse outcomes among those living in distressed vs. non-distressed communities were not meaningfully different at 30-days and became more prominent by 1-year f/u. Similar results were noted in the restricted cubic spline analysis with stronger and more graded association between DCI score and risk of adverse outcomes in White (vs. Black) patients (Fig. B). Conclusion: SE distress is strongly associated with risk of adverse outcomes in White patients with HF. Among Black patients, SE distress is more common, but its adverse effects are less evident during short-term f/u and are better highlighted in the long-term. Other societal factors such as structural racism and poor access to care may be important prognostic determinants in Black patients with HF.

Introduction: Peer-reviewed manuscript retractions are increasingly being recognized, wasting valuable scientific resources and magnifying false conclusions. The temporal trend and downstream impact of retracted cardiology articles on research and knowledge dissemination remain largely unexplored. We sought to compare retraction trends between cardiology and clinical medicine overall. Methods: We conducted a systematic review of retracted publications using the Retraction Watch database. Articles were selected based on manual classification. The Welch two-sample t-test and Mann-Kendall trend test were used for statistical inference. Results: Out of 22,740 articles, 6,594 (29%) and 445 (2%) were related to medicine overall and cardiology, respectively. The ratio of retractions to published articles has increased over recent years for medicine overall and cardiology (Figure upper panel, p < 0.01 for trends). Relative to 1990 levels, retractions in medicine have increased at over double the rate in comparison to cardiology (p < 0.01 for rate difference). There has been a downward trend in the time between publication and retraction for articles in cardiology and medicine (Figure lower panel, p < 0.01 for trends). There was no significant difference in time to retraction between the two fields. Conclusions: We report a sharp increase in the retracted articles in the medical literature over time. Although retractions in cardiology are increasing, they are doing so at a slower rate than other specialties. Sharing research guidelines from cardiology to other medical specialties could improve their retraction statistics, thus decreasing patient harm and waste of valuable scientific resources. Retractions are being identified earlier, potentially due to improved policing of the published literature. However, more stringent quality checks should occur during the peer review processes to prevent eventually retracted articles from being published.

Background We studied the prognostic value of serum NT-proBNP in nonobstructive hypertrophic cardiomyopathy (nHCM) patients. Methods We studied 777 nHCM patients (55±13 years, 54% men, maximal left ventricular outflow tract gradient [LVOTG] Results NT-proBNP ratio was high in 473 and low in 304 patients. Median [interquartile range] LVEF, LVOTG & NT-proBNP were 61% [59, 66], 7 [4, 12] mm Hg & 481 [137–1361] pg/dl. 31% had functional class ≥II & 32% had ≥1 sudden cardiac death risk factor. At 5.3 [3–9] years, 139 (18%) met the primary endpoint (107 deaths). On spline analysis, log NT-proBNP ratio >2.75 was associated with higher events. Cox & Kaplan-Meier survival analyses showed that high NT-proBNP ratio was independently associated with events (Figures 1A-B). In the subgroup of asymptomatic patients, NT-proBNP ratio remained associated with the primary outcome (adjusted HR 1.45, 95% CI 1.10–1.93, P=0.009). Conclusions Higher NT-proBNP ratio (>2.75) is independently associated with adverse outcomes in nHCM, including asymptomatic patients, suggesting risk stratification even in earlier disease stages. Funding Acknowledgement Type of funding sources: None.

Background Epicardial adipose tissue (EAT) is a visceral fat deposit within the pericardial sac which surrounds the heart myocardium and coronary arteries. EAT volume has been demonstrated to be strongly associated with the development and prognosis of cardiovascular diseases, but its measurement is subjective and challenging in practice. Purpose To develop a deep-learning approach for automated segmentation of EAT from routine CCTA scans, that could assist clinical interpretation of CCTA. Methods A deep-learning method using a 3D Residual-U-Net neural network architecture for 3D volumetric segmentation of CCTA data was created. The network was trained on a diverse sample of 1900 CCTAs, each manually segmented by a single expert, drawn from the UK sites of the Oxford Risk Factors And Non-invasive imaging (ORFAN) Study. Three iterations of feedback learning were used to fine tune the algorithm for the segmentation of the whole heart within the bounds of the pericardium. In each iteration, the machine analysed sets of 100–250 unannotated CCTAs unseen by the machine which were then corrected by experts. EAT volumes were calculated by automated thresholding of adipose tissue (−190HU through −30HU) from within the bound of the pericardial segment (Figure 1). The network was then applied to 817 unseen CCTAs from US sites of the ORFAN Study. These scans were also segmented for ground truth by two experts blind to all other data. Comparisons between machine vs expert total pericardial volume and EAT volume were made using Lin's concordance correlation coefficient (CCC). The algorithm was then applied externally in 1588 CCTAs from the SCOTHEART trial (UK), and the EAT volume was automatically calculated for each case. Cross-sectional associations between standardised EAT volumes and prevalent AF and CAD were performed. Results Within both the internal (UK ORFAN sites) and external (USA ORFAN sites) validation cohorts correlation between human and machine segmented total pericardium and EAT was excellent, with CCC of 0.97 for both volumes (external validation cohort shown in Figure 2A). Utilising SCOTHEART CCTAs with automatically segmented EAT volumes, a multivariable-adjusted logistic regression model accounting for risk factors of age, sex, BMI, hypertension, diabetes mellitus, valvular disease, and previous heart surgery found that EAT volumes were significantly associated with prevalent AF, with odds ratio (OR) per 1 SD increase of EAT volume of 1.20 (95% CI, 1.06 to 1.44; P=0.03). A similar model for prevalent CAD, adjusted for age, sex, BMI, hypertension, non-HDL cholesterol, diabetes mellitus, and coronary artery calcium score resulted in an OR per 1 SD increase of EAT volume of 1.26 (95% CI, 1.10 to 1.45; P=0.001) (Figure 2B). Conclusion Highly accurate, reproducible, and instantaneous EAT volume quantification is possible utilising deep-learning detection of the whole human heart within the pericardial sac. Funding Acknowledgement Type of funding sources: Public Institution(s). Main funding source(s): British Heart FoundationNational Institute for Health Research - Oxford University Hospitals Biomedical Research Centre Figure 1Figure 2

Background Functional assessment of coronary stenosis using computational fluid dynamics is increasingly used, however other factors besides coronary stenosis may affect the results. We assessed several predictors for CT-derived fractional flow reserve (CT-FFR) in patients with suspected coronary artery disease (CAD) undergoing coronary computed tomographic angiography (CCTA). Methods 2505 consecutive patients with suspected CAD undergoing CCTA from 2008 to 2016 were screened, 1549 were excluded due to incomplete data (934), image quality (345), software error (147) or other reasons (123). Minimal CT-FFR was measured using an on-site prototype (cFFR Version 3.0, Siemens Healthineers, Forchheim, Germany) in coronaries ≥2mm. Several clinical as well as technical criteria were assessed for predicting the minimal CT-FFR per patient. Results 956 patients (51±12 years, 51.2% men) were included in this analysis. Mean EF was 59.4±7.4%, heart rate 63±9 bpm, systolic (126.5±20mmHg) and diastolic (70±11 mmHg) blood pressure (BP). Regression analysis and ANOVA showed low but significant impact on minimal CT-FFR (mean 0.85±0.10) by EF, aortic valvular dysfunction, heart rate and systolic blood pressure as well as image quality (esp. blooming and image noise). See Tables 1 and 2. Conclusion Coronary stenosis may not be the only relevant predictor for CT-FFR. Several clinical criteria (EF, heart rate, BP, aortic valve dysfunction) as well as image criteria (image quality, artifacts) can affect CT-FFR results. Funding Acknowledgement Type of funding sources: Foundation. Main funding source(s): Cleveland Clinic Foundation Table 1. ANOVA analysisTable 2. Regression analysis

Background Hypertrophic cardiomyopathy (HCM) and aortic stenosis can cause obstruction to the flow of blood out of the left ventricular outflow tract into the aorta, with obstructive HCM resulting in dynamic left ventricular outflow tract obstruction and moderate or severe aortic stenosis causing fixed obstruction caused by calcific degeneration. We sought to report the characteristics and longer‐term outcomes of patients with severe obstructive HCM who also had concomitant moderate or severe aortic stenosis requiring surgical myectomy and aortic valve replacement. Methods and Results We studied 191 consecutive patients (age 67±6 years, 52% men) who underwent myectomy and aortic valve (AV) replacement (90% bioprosthesis) at our center between June 2002 and June 2018. Clinical and echo data including left ventricular outflow tract gradient and indexed AV area were recorded. The primary outcome was death. Prevalence of hypertension (63%) and hyperlipidemia (75%) were high, with a Society of Thoracic Surgeons score of 5±4, and 70% of participants had no HCM‐related sudden death risk factors. Basal septal thickness and indexed AV area were 1.9±0.4 cm and 0.72±0.2 cm 2 /m 2 , respectively, while 100% of patients had dynamic left ventricular outflow tract gradient >50 mm Hg. At 6.5±4 years, 52 (27%) patients died (1.5% in‐hospital deaths). One‐, 2‐, and 5‐year survival in the current study sample was 94%, 91%, and 83%, respectively, similar to an age‐sex–matched general US population. On multivariate Cox survival analysis, age (hazard ratio [HR], 1.65; 95% CI, 1.24–2.18), chronic kidney disease (HR, 1.58; 95% CI, 1.21–2.32), and right ventricular systolic pressure on preoperative echocardiography (HR, 1.28; 95% CI, 1.05–1.57) were associated with longer‐term mortality, but traditional HCM risk factors did not. Conclusions In symptomatic patients with severely obstructive HCM and moderate or severe aortic stenosis undergoing a combined surgical myectomy and AV replacement at our center, the observed postoperative mortality was significantly lower than the expected mortality, and the longer‐term survival was similar to a normal age‐sex–matched US population.