bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extra-cellular volume fraction analysis on cardiac CT is useful for predicting the prognosis of hypertrophic cardiomyopathy
Authors: Aoki S , Takaoka H , Kanaeda T , Asada K , Kinoshita M , Yashima S , Suzuki K , Yoshida K , Nishikawa Y , Matshumoto M , Noguchi Y , Sasaki H , Suzuki-Eguchi E , Kobayashi Y 
Published: October 2024

Abstract

Introduction
Extra-cellular volume (ECV) fraction on magnetic resonance imaging (MRI) can evaluate the degree of myocardial fibrosis and has been reported to help diagnose and evaluate the prognosis of cardiomyopathy. In hypertrophic cardiomyopathy (HCM), ECV analysis on MRI is reported to help predict ventricular arrhythmias. However, the performance of cardiac MRI takes time, and there are also several contraindications. Cardiac computed tomography (CT) is more versatile than cardiac MRI and is also useful in screening coronary artery disease. ECV analysis on CT is now available, and a good correlation with ECV on MRI has been reported. We hypothesized that ECV on CT, a new fibrosis indicator, would be useful in predicting prognosis in HCM patients.

Purpose
To determine the utility of ECV analysis on CT to predict the prognosis in patients with HCM.

Methods
One hundred and three HCM patients (68 males, 66 ± 11 years old) who underwent cardiac CT using 320-row detector CT or 256-row detector CT, from 2008 to 2021 at our two hospitals were analyzed. We measured left ventricular (LV) ECV (LV-ECV) on CT and collected patient characteristics, transthoracic echocardiographic, and other CT findings. We investigated the relationship between these findings and the major adverse cardiac events (MACEs) (cardiac death, fatal arrhythmia, and heart failure hospitalization) after CT.

Results
All patients were followed for 64 ± 54 months after cardiac CT, and 15 patients (14.6%) had MACEs (ten heart failure hospitalization cases, two ventricular fibrillation cases, two sustained ventricular tachycardia cases, and one sudden cardiac death case). The patients with MACEs had a significantly higher LV-ECV, sudden cardiac death (SCD) risk score and lower LV ejection fraction (LVEF) than those without MACEs（42.0 ± 8.3% vs. 33.7 ± 6.1%, P &lt; 0.001, 2.4 ± 0.39 vs 1.95 ± 0.16, P= 0.047, and 57.7 ± 11.9% vs. 66.7 ± 6.9%, P = 0.004). The percentage of dilated phase HCM was significantly higher in the patients with MACEs than those without MACEs (21% vs 0%, p=0.002). LV-ECV was the only significant predictor of MACEs based on the multivariate analysis by Cox proportional hazard model (hazard ratio 1.23, 95% confidence interval 1.09-1.41, P&lt;0.001). The optimal threshold of LV-ECV to predict MACEs was 37.6% based on the receiver operating characteristic analysis. The sensitivity and specificity of LV-ECV to predict MACEs were 73% and 78% at the best cut-off, and the area under the curve was 0.79 (Figure A). The patients with LV-ECV ≥ 37.6% (30 patients) had significantly higher MACEs than those with LV-ECV &lt; 37.6% during the follow-up periods (P &lt; 0.001) (Figure B).

Conclusion
LV-ECV on CT of 37.6% is a good prognostic indicator in HCM cases. ECV analysis on CT helped predict MACEs in HCM cases.
Tricuspid regurgitation in the context of severe concomitant left-sided valvular heart disease: patients characteristics and long-term clinical and interventional outcomes
Authors: Margonato D , Ingallina G , Belli M , Tavernese A M , Ricchetti G , Ancona F , Stella S , Biondi F , Fiore G , De Bonis M , Maisano F , Topilsky Y , Agricola E 
Published: October 2024

Abstract

Background
The clinical features, therapeutical management and outcome of patients with significant tricuspid regurgitation (TR) in the context of multiple valvular disease (VD) are poorly defined.

Purpose
To assess the characteristics, management and long-term prognosis of a large cohort of patients with multiple VD, focusing on the context of significant TR and concomitant severe mitral or aortic disease.

Methods
Clinical and echocardiographic data were collected in 1183 patients with ≥moderate TR diagnosed at our centers from January 2012 to June 2020: after propensity score matching for age to create matched cohort with &lt; 10% of absolute difference, 975 patients were included in this study and divided in 4 groups as shown in Figure 1. Primary endpoint was all-cause death (ACD), secondary endpoint was the composite of heart failure (HF) hospitalization+any valvular intervention.

Results
Patients with isolated TR (356, 37%) had more history of atrial fibrillation and were more often asymptomatic and with preserved left-ventricular ejection fraction (LVEF). TR+ severe MR patients (466, 48%) showed higher rates of concomitant coronary artery disease, NYHA class III/IV symptoms and larger left atrial volumes. The group of TR+ severe AS (131 patients, 13%) was characterized by older age, more comorbidities and lower LVEF. Patients with TR and severe AR (22, 2%) were younger, with larger LV dimensions and higher pulmonary pressures.
Overall, in 37(4%) patients tricuspid intervention was performed: no differences were found between groups in term of frequency of concomitant or staged tricuspid valve surgical treatment (p=0.444 and p= 0.624, respectively), while left-valve only surgical treatment was more common among patients with TR and severe MR and left-valve transcatheter treatment among patients with TR and severe AS (both p&lt;0.001).
After a median follow-up of 2.8 years, the primary endpoint occured in 374 (38%) of patients, and was significantly more frequent in the group of patients with TR and severe AS (p&lt;0.001, Figure 2). In this group, after multivariate analysis, indexed stroke volume remained independenty associated with ACD (OR 0.96, CI 0.93-0.98, p =0.040). Eventually, the secondary endpoint too was more common in patients with TR and severe AS (p&lt;0.001, Figure 2).

Conclusions
In the context of significant TR, concomitant severe left-sided VD is common, and each subtype presents with different clinical features and echocardiographic phenotypes; in this scenario, TR was profoundly underteated. Long-term, patients with significant TR+ severe AS have considerable worse prognosis.Figure 1Figure 2
A decade of follow-up: atrial fibrillation, pulmonary pressure, and the progression of tricuspid regurgitation
Authors: Loutati R , Katz A , Kuperstein R , Sabbag A , Maor E 
Published: October 2024

Abstract

Background
While Atrial fibrillation is considered a risk factor for tricuspid regurgitation (TR), prospective long term data in the field is lacking. This analysis aimed to identify risk factors of TR progression during a decade of follow up among patients with and without AF.

Methods
Patients with full echocardiographic and clinical follow of at least 5 years were included. Individuals presenting with significant TR at baseline were excluded. Patients were divided into two groups based on baseline diagnosis of AF, followed by stratification according to systolic pulmonary artery pressure (sPAP). The primary outcome was the occurrence of new significant TR (≥ Moderate).

Results
Study population included 15,957 patients with a median age of 63 (IQR: 54-72) of whom 6,068 (38%) were women and 1,837 (11.5%) had baseline AF. During a median follow-up period of 11 years (8.5 – 13.5), 1,191 (7.5%) patients developed significant TR. Compared with sinus rhythm, patients with AF were 4 and 2 times more likely to develop significant TR during follow up in a univariate and multivariate models, respectively (95% CI 3.66 - 4.68 and 1.98 – 2.56, p &lt; 0.001 for both). Older age, female sex, chronic kidney disease (CKD), left heart disease (LHD) and impaired right ventricular (RV) function, rate control and permanent AF were all risk factors for TR progression. The association of baseline AF with TR during follow up was sPAP – dependent, such that among patients with normal sPAP AF associated risk was high while among patients with high baseline sPAP AF-associated risk was significantly lower (HR 2.87 vs. 1.77; p for interaction &lt; 0.001). Competing risk analysis with death as competing event yielded consisted results.

Conclusions
Baseline AF is a strong and independent risk factor for TR development. This association is more pronounced among patients with normal pulmonary arterial pressures, emphasizing the need for focused research on preventing TR development in this population.
Is etiology of severe tricuspid regurgitation related to prognosis?
Authors: Gomez Polo J G P , Miguel Angel Marquez Rivera M A M R , Patricia Mahia P M , Itziar Gomez Salvador I G S , Esther Perez David E P D , Pere Pericas P P , Manuel Barreiro M B , Carlos Izurieta C I , Ana Revilla Orodea A R O , Vanessa Monivas V M , Ana Testa A T , Lara Miguel L M , Laura Gutierrez L G , Jose Alberto San Roman J A S R , Isidre Vilacosta I V 
Published: October 2024

Abstract

Objective
Our aim was to assess the prognostic role of the etiology tricuspid valve disease in patients with severe tricuspid regurgitation (TR).

Methods
Multicenter, observational, and prospective registry in which all patients with severe TR have been consecutively collected within a 6-month period and followed up for one year.

Results
A total of 1247 patients with severe TR [mean age: 76.7±10.5 years, 876 women (70.2%)] were included: 810 (64.9%) met criteria for severe TR, 301 (24.1%) massive TR, and 136 (11%) torrential TR. The most frequent etiology was functional TR secondary to left-heart disease in 621 patients (49.9%) followed by "atriogenic" TR in 247 (19.8%). TR etiology distribution is described in Figure 1. Death due to refractory HF occurred in 9,2% of patients, hospitalization for HF in 20,8%, and 12,3% underwent TR interventions. In the univariate and multivariate analysis, age, impaired renal function, previous HF admission, and massive and torrential TR were associated with an increased risk of HF hospitalization and cardiovascular mortality. Global (p=0,476) and cardiovascular mortality (p=0,138) rates were similar when comparing different TR etiologies (Figure 2).

Conclusion
Severe TR is associated with high rates of CV mortality and new HF admission. These findings are and independent from TR etiology.
Outcomes of infective endocarditis in patients with end-stage renal disease and dialysis in Spain: a population-based study
Authors: Gomez-Ramirez D , Olmos C , Fernandez-Perez C , Del Prado N , Rosillo N , Bernal J L , Zulet P , Vilacosta I , Elola F J 
Published: October 2024

Abstract

Background
Patients with end-stage renal disease (ESRD), particularly those undergoing dialysis, have a significantly higher risk of developing infective endocarditis (IE) compared to the general population. ESRD is not only related to a higher risk of infection, but also to a worse prognosis in IE. However, most data regarding the epidemiology and outcomes of patients with ESRD and IE is derived from noncontemporary population-based studies with limited clinical variables and lack of complete microbiological information, or from retrospective single-center cohorts.

Purpose
The aim is to describe the clinical characteristics and outcome of patients with IE and ESRD in Spain, compared to patients without ESRD, and to investigate potential differences between patients undergoing dialysis and the rest of patients with ESRD.

Methods
Retrospective observational population-based study. A total of 9,008 episodes of IE between 2016 and 2019 were analysed using information from the Spanish Minimum Basic DataSet. 428 patients had ESRD, of whom 332 were undergoing dialysis. A multivariable and multilevel logistic model was developed to evaluate the association of different variables with in-hospital mortality in ESRD patients.

Results
Compared to patients without ESRD, those with ESRD were younger, had more comorbidities, and had a higher incidence of Staphylococcus aureus (31.8% vs. 18.4%; p &lt;0.001) and coagulase-negative staphylococci infections (19.2% vs. 14%; p =0.006). In terms of in-hospital complications, septic shock was more frequent in patients with ESRD (12.1% vs. 8.9%; p=0.007). Furthermore, ESRD patients underwent cardiac surgery less frequently than patients without ESRD (12.6% vs. 19.6%; p &lt;0.001) and had significantly higher in-hospital mortality (33.4% vs. 26.9%; p =0.003).
When comparing patients undergoing dialysis with the rest of ESRD patients, it was observed that those on dialysis had more comorbidities and a higher proportion of Staphylococcus aureus infections (36.1% vs. 16.7%; p &lt;0.001).
No differences were found in observed in-hospital mortality between patients on dialysis and the rest of ESRD patients. The multilevel analysis revealed that dialysis was not an independent risk factor for in-hospital mortality in patients with ESRD. Cardiac surgery was also not independently associated with higher in-mortality in ESRD patients.

Conclusions
Patients with ESRD and IE have a different clinical and microbiological profile than other patients with IE. Moreover, they undergo cardiac surgery less frequently and have significantly higher in-hospital mortality. Dialysis treatment and cardiac surgery were not independent risk factors for mortality in ESRD patients with IE.
Long-term follow-up after infective endocarditis: comparison of patients who have undergone cardiac surgery versus a conservative therapy with and without an indication for cardiac surgery
Authors: Taner E , Zahn R , Kilkowski C , Karcher A K , Winkler R , Kleemann T , Ouarrak T , Schneider S , Sutor D , Weisse U , Sack F U 
Published: October 2024

Abstract

Background
Infective endocarditis (IE) is still a serious disease, with a high mortality despite cardiac surgery and modern conservative therapy. However, data on long-term follow-up are sparse.

Methods
Retrospective single centre registry on the hospital course and long-term follow-up of patients with IE who have undergone cardiac surgery or a conservative therapy with and without an indication for cardiac surgery.

Results
Between 1/2013 and 12/2016, 171 IE patients were treated at our hospital. A follow-up with either patient contact, review of hospital charts or physician contact was performed in 2022. Due to lost to follow-up (n=4) or refusal to participate after discharge (n=1), the final evaluation was performed with 166 patients (97.1%). They were followed-up for a median 2385.0 (between 2156 and 2773) days. 139 (81.3%) of the patients were operated (surgery) and 32 (18.7%) were treated conservatively. Amongst the conservatively treated group, 34.4% (11/32) of the patients had an indication for surgery, but it was decided not to perform it (cons-with) and 65.6% (21/32) had no indication for surgery (cons-without).
Operated patients were younger compared to cons treated patients (65.1 ± 13.0 vs 72.8 ± 15.7, p = 0.00016). Whereas hospital mortality was not different between both groups (21.6 % vs 21.9 %, p = 0.97112), calculated 5y mortality was higher in der cons treated group (71.0 % vs 49.6 %, p=0.03168).

Conclusions
These data on long-term follow-up after IE show a high total mortality amongst all patients regardless of type of therapy, but higher mortality rate after 5 years amongst conservative treated patients (71%) compared toa surgical treated (49.6% p= 0.03168). The highest mortality rate after 5 years (100%) was detected in the cons-with compared to 55% in the cons-without group. More than 2/3 of deaths were due to IE. However, operated patients were younger and had less co-morbidities. Furthermore, rehospitalisation rate for recurrent IE was also high.
Mild intracerebral bleeding does not adversely affect survival and neurological outcome of surgical therapy for left-sided infective endocarditis
Authors: Schach C , Fuessl E , Wiesinger I , Wendl C , Heller A , Schmid C , Maier L S , Schlachetzki F , Debl K 
Published: October 2024

Abstract

Background
Intracerebral bleeding (IB) is a serious condition that requires increased attention and has implications for treatment options. For patients with infective endocarditis (IE), current guidelines recommend postponing surgery if IB is present. IB can be classified into four relevant groups (following European Cooperative Acute Stroke Study and Heidelberger Bleeding classification): hemorrhagic transformation (HT) 1 and 2, and parenchymal hemorrhage (PH) 1 and 2. PH2 is the only IB with neurological deterioration. These classifications were originally introduced for stroke patients following thrombolysis but without IE. The hypothesis tested in our study is that IB may influence IE treatment and thus outcome.

Method
Patients were retrospectively identifyied who were operated for left-sided IE, neuroradiologists re-evaluated and classified preoperative cerebral imaging for any IB. Outcome was quantified using the modified Rankin score (mRS), and mRS were extracted from the patients’ hospital chart at admission and by follow-up telephone call (FU), also including mortality. To ensure that the influence of IB was comparable, patients with IB (IB+) were propensity matched (EuroScore 2, Charlson Comorbidity Index, C-reactive protein; nearest neighbor match) to patients without IB (IB-) who also received surgical IE therapy. All IB+ patients underwent a careful risk-benefit analysis before therapy.

Results
Of 286 consecutive patients (January 2015 - November 2022) operated for left-sided IE, 36 had IB (65±13 years, 26% female): 11 with HT1, 9 with HT2, 8 with PH1, and 8 with PH2. These patients were matched with 36 operated IB- patients. Survival analysis showed no overall effect of IB+ vs. IB- (p = 0.112, 95% CI of hazard ratio was 0.246-1.243 vs. 0.709-3.572). Although there was no effect of IB on survival in the mild IB subgroup (HT1/2, Figure A), there was a difference in patients with severe IB (PH1/2) with less survival in IB+ (Figure B). Neurological outcome (ΔmRS) showed an effect of IB grade in the two-way ANOVA analysis (p = 0.029). Intergroup comparison showed a significantly better outcome for IB- (vs. IB+) in the PH2 subgroup (p = 0.034), but not in other subgroups. For all groups, the mean ΔmRS for IB+ was 1.1±1.6 vs. 0.70±1.4 for IB- (p = 0.256). The mean FU time was 2.6±2.1 years.

Conclusion
In patients operated for left-sided IE, mild IB did not affect survival or neurological outcome. In the more severe forms of IB, i.e. PH1 and PH2, survival was less favorable compared to matched controls. Furthermore, we observed a difference in neurological outcome in patients with severe IB. Thus, surgical therapy of left-sided IE should be avoided in patients with severe IB, whereas we can add evidence to the safety of surgical therapy in mild IB. Therefore, we recommend regular assessment of the degree of IB in such patients.Figure
Acute renal failure in patients with infective endocarditis
Authors: Rodriguez Esteban M T , Miranda Montero S , Godoy R , Quijada Fumero A , Alvarez Gonzalez L , Hernandez Afonso J 
Published: October 2024

Abstract

Background/Introduction
Acute kidney failure (AKF) appears in a high percentage of patients with infective endocarditis (IE), becoming a complication related to the mortality of the disease and delayed recovery of patients.

Purpose
To investigate the factors that are related to the development of AKF in patients with IE.

Methods
Study of all cases of IE consecutively diagnosed in an university hospital between 2005 and 2021. A disease extension protocol was carried out using imaging tests and the levels of potentially nephrotoxic antibiotics were monitored. Furthermore, starting in 2010, a multidisciplinary committee (MC) was created to follow patients with EI.
Factors potentially related to the development of AKF during hospital admission according to RIFLE criteria were analyzed using a binary logistic regression analysis.

Results
305 cases were included, 96.7% of them meeting definitive IE criteria. The median age was 66 (54-74.5) years, 75.4% male. The most frequent microorganism was S. aureus (66; 21.6%), 172 (56.4%) underwent surgery and 107 patients (35.1%) died. 149 cases (45.3%) developed AKF, with no differences before (45.3%) and after the creation of the CM.
The variables related in the multivariate analysis to the appearance of AKF were age (OR 1.01; 95% CI: 1.01-1.05; p= 0.006), baseline creatinine (OR= 1.53; 95% CI = 1.22-1.68; p&lt;0.001). ), peripheral embolism (OR=1.86; 95% CI = 1.07-3.22; p= 0.027), the development of heart failure (OR=1.98; 95% CI = 1.12-3.22; p= 0.017) and left ventricular systolic dysfunction (OR= 4.02; 95% CI = 1.09-14.85; p= 0.037). None of the other variables analyzed, including the type of microorganism and the use of nephrotoxic antibiotics, were related to the development of AKF.

Conclusions
In a hospital center with a protocol for the study and treatment of infective endocarditis, the development of AKF is related to age, baseline creatinine, peripheral embolism, and the development of heart failure.
Temporal dynamics of cardiac remodelling in pressure overload: the key role of visceral adipose tissue
Authors: Tarraf A , Freitas Nabuco Leva Ferreira J A , Delmont T , Altintas D , Radu C , Pini M , Czibik G , Folliguet T , Zhang Y , Bischof O , Derumeaux G 
Published: October 2024

Abstract

Background
Myocardial fibrosis is a prominent pathological feature of cardiac remodelling in pressure overload. The underlying mechanisms of cardiac remodelling are complex including mechanical, inflammatory and neurohormonal factors. We have recently uncovered a pathological crosstalk between visceral adipose tissue (VAT) and heart in biological aging characterized by profibrotic proteins in both the VAT secretome and the plasma contributing to myocardial interstitial fibrosis. We hypothesize that a model of pressure overload induced by transverse aortic constriction (TAC) is responsible for VAT remodelling and a VAT profibrotic secretome, which in turn worsens cardiac fibrosis and alters cardiac function.

Purpose
To explore the effect of pressure overload on VAT and identify a crosstalk between heart and VAT.

Methods
We divided wild-type male mice (5-month-old, n=10/group) into two groups: a visceral Lipectomy group and a Sham group two weeks before a moderate TAC (26G; i.e. gradient between left ventricle and aorta of 30mmHg) or a sham surgery. We sacrificed the mice at 1- and 8-week after TAC. We performed in vivo metabolic tests, echocardiography, and invasive hemodynamics, followed by ex vivo tissue analysis. We then analysed the time-course of the cardiac transcriptomic signature in TAC vs control and the impact of visceral lipectomy in both groups.

Results
Our results show that TAC induced not only cardiac remodelling affecting the structure and function of the heart, but also VAT fibrosis and inflammation together with activation of adrenergic receptors (Adrb3). VAT became a major source of profibrotic (TGFb and osteopontin) and proinflammatory (TNFa, IL6 and PAI1) factors as early as 1 week after TAC. Interestingly, lipectomy prevented cardiac remodelling and dysfunction. After 1 week of TAC, cardiac transcriptomic profile showed a similar upregulation of profibrotic and prohypertrophic genes in TAC groups in presence or absence of lipectomy. After 8 weeks of TAC, lipectomy prevented the upregulation of those genes and transcriptomic profile of TAC+lipectomy was similar to sham group (Figure). PCR analysis confirmed the lower expression of profibrotic (TGFb, Osteopontin), prohypertrophic (Nppa) and contractility genes (Adr1b) in TAC+Lipectomy vs TAC group after 8 weeks of TAC.

Conclusion
Our results suggest that VAT is detrimental to cardiac structure and function by releasing a profibrotic and a proinflammatory secretome that aggravates the cardiac remodelling induced by TAC. Conversely, lipectomy prevents the early development of TAC-induced cardiac fibrosis.