bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prognostic significance of coronary flow velocity reserve in patients with peripheral arterial disease
Authors: Cerracchio E , Cortigiani L , Gaibazzi N , Ciampi Q , Tuttolomondo D , Navacchi R , Bovenzi F , Carerj S , Pepi M , Pellikka P A , Picano E 
Published: October 2024

Abstract

Background
Patients with lower extremity peripheral arterial disease (PAD) have a higher risk of cardiovascular events. Stress echocardiography (SE) based on regional wall motion abnormality (RWMA) is imperfect for risk stratification in PAD, but it can be complemented with an assessment of coronary flow velocity reserve (CFVR) in the mid-distal left anterior descending coronary artery.

Purpose
To assess the value of SE with RWMA and CFVR to predict survival in PAD.

Methods
In a retrospective analysis of prospectively acquired data in an observational, multicenter study, we recruited 359 patients (age 69±8 years, 240 [67%] males) with PAD referred for dipyridamole SE in 3 accredited laboratories. We assessed RWMA and CFVR (abnormal value &lt;2.0). All patients were followed up for a median of 4.7 (interquartile range: 2.0 to 8.2 years). All-cause death was the outcome end-point.

Results
The positivity rate was 37/359 (10%) for RWMA and 159/359 (44%) for CFVR. During follow-up, 97 (27%) deaths were registered. At multivariable analysis, inducible RWMA and/or CFVR &lt;2.0 (HR 2.58, 95% CI 1.65-4.04; p&lt;0.0001), age ≥70 years, diabetes, dialysis treatment, and ejection fraction ≤50% were associated with decreased survival. The annual mortality was 7.4% in patients with RWMA and/or CFVR &lt;2.0 and 2.7% in those with no RWMA and CFVR &gt;2.0 (Figure, p&lt;0.0001).

Conclusion
In patients with PAD, SE shows more than 4-fold higher prevalence of abnormal CFVR compared to RWMA. The prognostic value of CFVR outperforms RWMA, showing the importance of coronary microvascular dysfunction and diffuse, subcritical coronary atherosclerosis in determining the outcome.
Association of left atrial strain and exercise capacity among patients with hypertension: a single center study
Authors: Luna D 
Published: October 2024

Abstract

Introduction
Hypertension has been identified as one of the leading risk factors for developing cardiovascular disease in the Philippines. 1 The long term increase in afterload causes the progressive decline in both the systolic and diastolic function of hypertensive patients. There has been an increasing recognition in the role of left atrial function in the pathophysiology of several cardiac diseases, including hypertension.

Purpose
For patients with hypertension, exercise capacity is reduced by 30%.2 As exercise capacity is a known prognostic marker for adverse cardiovascular outcomes, identifying patients with hypertension with impaired left atrial reservoir strain may also improve cardiovascular risk stratification. With the use of two-dimensional (2D) speckle tracking echocardiography, left atrial strain can now be utilized in the evaluation of left atrial reservoir, conduit, and contractile function. Left atrial strain (LA strain) can now serve as a biomarker of adverse cardiovascular outcomes, including the exercise capacity of patients. Another goal of the study is to identify other clinical and echocardiographic factors that may affect exercise capacity

Methods
A single center, retrospective cross sectional study was conducted in a tertiary hospital to validate the association of left atrial strain with exercise capacity in terms of metabolic equivalent (METs) achieved during treadmill exercise echocardiography of patients diagnosed with hypertension. The primary objective of this study is to determine the left atrial strain cutoff that reliably discriminates poor, fair, average, good, or high exercise capacity. Data was obtained by conducting a chart and echocardiography review of adult patients from January 2023 to April 2023. The independent association of LA strain with METs was studied with regression analysis. Results were considered significant at p≤0.05 at 95% confidence interval. Receiver-operating characteristic curve analysis was utilized to determine the strength of the LA strain to discriminate between the different exercise capacities.

Results
A total of 136 patients were included in the study. LA strain, particularly the reservoir, can discriminate exercise capacity, specifically to discriminate good to high capacity from fair to average as their AUC is 0.678 (95% CI 0.58 to 0.77, p=.0001). The best cut-off is 30.2 which resulted to 80% sensitivity (95% CI 66.3 to 90) while specificity is only 51.16% (95% CI 40.1 to 62.1). Spearman rank correlation analysis showed that LA reservoir is significantly correlated with E/A and E/e’. The relationships are linear and positive. Among the other 2D echo parameters, only EDV, E/a and E/e’ were found to have a linear relationship or correlation with METS.

Conclusion
The study revealed that there is moderate correlation of LA reservoir strain in terms of METS achieved during treadmill stress echocardiography (rs=0.3196, p=0.0001).LA reservoir strain AUCLA strain and other echo parameters
Exercise Doppler echocardiography to detect early changes in the right ventricular-pulmonary circulation unit after pulmonary embolism
Authors: Morvai-Illes B , Vass A , Ruzsa Z , Jdid M S , Szili-Torok T , Varga A , Agoston G 
Published: October 2024

Abstract

Introduction
After pulmonary embolism (PE), patients frequently complain about reduced exercise capacity and dyspnea on exertion, even without pulmonary hypertension (PH). The underlying condition is often chronic thromboembolic disease, which is caused by residual pulmonary obstruction with preserved resting pulmonary haemodynamics. The symptoms are the consequences of the increased dead space ventilation, exercise-induced PH and right ventricular (RV) dysfunction.
We aimed to assess the pathologic differences in the echocardiographic parameters of the RV- pulmonary circulation unit among patients with previous PE and the healthy control group.
Furthermore, an objective was to compare the hemodynamic response to stress after different treatment strategies (thrombolysis vs. heparin administration).

Methods
21 patients after PE (mean age 58,5±12,1 years; 53% men) have been included in the study. All of them were effectively anticoagulated for at least three months, and none had any signs of PH on echocardiography at rest. The control group included 20 healthy volunteers (mean age 56,9±11,5 years; 55% men). Each patient underwent resting and exercise stress echocardiography on a semi-recumbent bicycle ergometer according to a standardised protocol until the maximally tolerated workload. Echocardiography was performed at rest, at 50 Watt workload and during peak stress. The measurements focused on the RV's systolic function (TAPSE), the estimated pulmonary artery systolic pressure (PASP), and the Doppler measurements in the RV and left ventricular outflow tracts. Pulmonary vascular resistance (PVR) and RV-pulmonary artery coupling (RV-PA) were calculated from the echocardiographic parameters.

Results
The post-PE group had significantly higher PASP (39,2 ±16,6 vs. 27,7±12,5 mmHg; p&lt;0,05) and PVR (1,5±0,4 vs. 1,1±0,3 Wood Units; p&lt;0,05) at peak stress, than the controls. 55% of post-PE patients remained symptomatic, but there were no significant differences between the symptomatic and asymptomatic groups regarding TAPSE, PASP, RV-PA coupling and PVR. 30% of post-PE patients had thrombolysis. In the patients where thrombolysis was performed, the coupling at peak stress was significantly higher than in heparin-treated patients (1,4±0,1 vs 0,9±0,4 mm/mmHg, p&lt;0,05).

Conclusion
Post-PE patients without resting PH have higher PVR and PASP than the healthy control group, even after at least 3 months of adequate therapy. Post-PE patients treated with thrombolysis may have more preserved RV-PA coupling than the heparin-treated patients.
Early echocardiographic changes and reverse remodeling after transcatheter aortic valve implantation
Authors: Kaya E , Andresen K , Aaberge L , Edvardsen T , Skulstad H 
Published: October 2024

Abstract

Introduction
Our hospital is a tertiary centre performing more than 500 transcatheter aortic valve implantation (TAVI) procedures annually. In this study we present early echocardiographic changes post-TAVI.

Methods
Clinical data collection and comprehensive echocardiography was performed the day before and 3.5±1.6 months after TAVI. Data analysis compared pre- and post-TAVI evaluations.

Results
A total of 101 patients were analyzed. Mean age was 80.1±6.8 years and 40% were female. TAVI was performed transfemorally in all patients, with 83% receiving a balloon expandable valve. NYHA class improved from 2.5±0.6 to 1.4±0.5 after TAVI (p&lt;0.001) Echocardiographic parameters are summarized in Table. Global longitudinal strain (GLS) improved from -17±4% pre-TAVI to -18±4% post-TAVI (p&lt;0.001), with no notable change in LVEF. A significant reverse remodeling with ≥10% reduction in left ventricular mass index (LVMi) was observed in 52% of patients following TAVI (from 124±32 to 110±29 g/m2, p&lt;0.001) (Figure). Predictors of LVMi reduction were pre-TAVI LVMi and absence of comorbid hypertension (OR=1.02, 95% CI=1-1.03, p=0.03 and OR=0.31, 95% CI=0.11-0.84, p=0.02 respectively). There was no significant improvement in diastolic function, including left atrial strain.

Conclusions
Early post-TAVI assessments showed significant reverse remodelling with improvements in GLS and LVMi after TAVI. Predictors of LVMi reduction post-TAVI were absence of comorbid hypertension and higher baseline LVMi. There was no notable changes in diastolic function.
Revisiting echocardiographic ranges of left ventricular end-diastolic volume index: an analysis of the discrepancies between the 2006 and the 2015 recommendation for chamber quantification guidelines
Authors: Larti F , Fallahtafti P , Bahramrafiee R , Sattarzadeh Badkoubeh R , Sardari A , Eftekhari M , Geraiely B , Safari S 
Published: October 2024

Abstract

Background
Indexed left ventricular end-diastolic volume (LVEDVi) and indexed left ventricular end-diastolic diameter (LVEDDi) serve as crucial parameters indicative of left ventricle (LV) size. The "Recommendations for Chamber Quantification" guideline was published in 2006 and updated in 2015. While the previous guideline maintained uniform cut-off points for both men and women, the latest revision introduced new thresholds that vary between genders.

Purpose
The study's primary aim is to evaluate the extent of change in labeled indexed LV diastolic volumes in men and women following the adoption of the 2015 guidelines and identify potential contributing factors to this change.

Methods
In this cross-sectional study, we analyzed echocardiography data extracted from a web-based registry from March 2020 to October 2022. LV volume variables were categorized based on the indexed ranges specified in the 2006 and 2015 guidelines. Statistical analysis was performed using SPSS version 25.

Results
Among the 7598 individuals, the classification of LVEDDi according to the 2006 and 2015 guidelines differed in 456 (6.1%) subjects. The classification of LVEDVi differed in 910 (12.0%) individuals. In 213 (5.5%) female subjects initially categorized as having normal or mild LV enlargement according to the 2006 guideline, there was substantial reclassification following the application of the 2015 recommendation (i.e., transitioned from a normal classification to moderate LV enlargement and from mild to severe LV enlargement). All females classified as having moderately abnormal LVEDVi according to the 2006 guideline were reclassified as having severely abnormal LVEDVi according to the 2015 guideline.

Conclusion
The significant disparities observed in the classification of indexed LV volumes between the 2006 and 2015 guidelines underscore the importance of ongoing dedicated research to reassess the range of indexed echocardiographic parameters, considering various outcomes and differences in countries and races.
Multiorgan congestion assessment by venous excess ultrasound score in acute heart failure
Authors: Anastasiou V , Peteinidou E P , Moysidis D V M , Daios S D , Gogos C G , Liatsos A C L , Didagelos M D , Gossios T G , Efthimiadis G K E , Karamitsos T K , Delgado V D , Ziakas A Z , Kamperidis V K 
Published: October 2024

Abstract

Purpose
Congestion assessment in patients with heart failure (HF) remains challenging and currently relies on clinical judgment, while validated methods to quantify congestion are lacking.

Aim
This study sought to explore the prevalence and clinical utility of different patterns of multi-organ venous congestion as assessed by the Venous Excess Ultrasound (VExUS) score in hospitalized patients with HF.

Methods
Consecutive patients admitted for acute HF were prospectively enrolled. Inferior vena cava (IVC) diameter, hepatic vein, portal vein and renal vein Doppler waveforms were assessed at admission and patients were stratified based on VExUS score from 0 to 3, with higher values indicating worse congestion (Picture 1). The clinical score Get With The Guidelines (GWTG)-HF for predicting in-hospital mortality in HF was evaluated. In-hospital mortality was recorded.

Results
Two-hundred-ninety patients admitted with acute HF were included and 114 (39%) of them were classified as VExUS score 3 which was the most prevalent group. Patients with VExUS score 3 suffered more frequently from chronic atrial fibrillation, chronic kidney disease and anemia. Parameters independently associated with VExUS score 3 were higher mean E/e’ ratio, larger right ventricular size, severe tricuspid regurgitation and impaired right atrial function. VExUS score 3 was associated with in-hospital mortality [OR 8.03, 95% CI (2.25–28.61), p=0.001]. The addition of VExUS score on top of the GWTG-HF score improved the predictability of the model (Δx2=+8.44, p=0.03) for in-hospital mortality, whereas other indices of venous congestion (right atrial function, IVC size) did not (Picture 2).

Conclusion
Patients admitted with acute HF commonly had severe venous congestion based on VExUS score. VExUS score improved the prediction of in-hospital mortality as compared to other indices of venous congestion.VExUS and adverse cardiac remodelingModels for in-hospital mortality
Artificial intelligence to detect pulmonary congestion on chest computed tomography in consecutive dyspnoeic patients
Authors: Miger K , Overgaard Olesen A , Orting S , Petersen J , De Bruijne M , Grand J , Ploug Boesen M , Thune J J , Wendelboe Nielsen O 
Published: October 2024

Abstract

Background
Pulmonary congestion is a hallmark of acute heart failure (AHF), and essential for the diagnosis, treatment, and risk stratification.
We have previously shown that a low-dose chest CT has four times greater odds than chest radiographs to detect pulmonary congestion. However, implementation is limited by shortage of radiologists. We hypothesized that artificial intelligence (AI) can detect pulmonary congestion on chest CT and aimed to develop and validate an AI-algorithm to detect pulmonary congestion on chest CT.

Methods
We extracted all chest CT-scans ordered acutely (N= 4840 unique patients) by medical departments at X Hospital from 2016-2021. A random subset of these CT-scans (N= 2187) was used to develop an AI-algorithm to detect pulmonary congestion, using the radiology reports as reference. The remaining subset (N= 1094) was used for internal validation.
We externally validated the AI-algorithm in a different cohort (X), comprising of 236 consecutive dyspnoeic patients admitted to the emergency department, all examined with a low-dose, non-contrast chest CT (LDCT). The primary outcome was pulmonary congestion adjudicated by clinical on-call radiologists with access to the medical record, and two independent, blinded research thoracic radiologists. The default AHF thresholds for the optimal cut-off, rule-in threshold and rule-out threshold was established from the internal validation.

Results
Of 236 patients (median age 74 years, 57% male), 62 (26%), 64 (27%) and 60 (26%) had pulmonary congestion on LDCT evaluated by the on-call radiologists and the two thoracic research radiologists, respectively.
The AI-algorithm included ten discriminating features of pulmonary congestion, and the results demonstrate an AUC of 0.95 [95%CI: 0.93-0.98] to predict pulmonary congestion by the on-call radiologists. The results were confirmed by the two expert research radiologists, with an AUC of 0.91 [95%CI: 0.88-0.95] and 0.94 [95%CI: 0.90-0.97], respectively.
The sensitivity and specificity of the AI-default threshold was 89% [95%CI: 78-95%] and 89% [95%CI: 83-93%], respectively. The rule-in threshold demonstrated a sensitivity of 97% [95%CI: 86-100%] and the rule-out threshold had a specificity of 96% [95%CI: 92-98%], Figure 1.

Conclusion
We developed and validated a novel AI-algorithm with promising potential for the rapid automatic detection of pulmonary congestion as the underlying cause of dyspnoea in consecutive acute patients.
Effect of empagliflozin on epicardial adipose tissue volume in patients with type 2 diabetes, or prediabetes, and heart failure with reduced ejection fraction (SUGAR-DM-HF)
Authors: Turgut C , Fernando J , Berry C , Campbell R T , Docherty K F , Dreisbach J G , Jhund P S , Mangion K , Mark P B , Mcmurray J J V , Osmanska J , Roditi G , Petrie M C , Sattar N , Lee M 
Published: October 2024

Abstract

Background
Epicardial adipose tissue (EAT) is postulated to be linked to the pathophysiology of heart failure with reduced ejection fraction (HFrEF), acting both as a biomarker and a potential therapeutic target. Investigating changes in EAT volume following treatment with sodium-glucose cotransporter 2 (SGLT2) inhibitor could provide valuable mechanistic insights.

Purpose
This posthoc substudy of the SUGAR-DM-HF trial aimed to assess the effect of the SGLT2 inhibitor empagliflozin on EAT volume.

Methods
Within a multicentre, randomised, double-blind, placebo-controlled trial, the effects of empagliflozin were evaluated in patients with HFrEF (New York Heart Association functional class II-IV, left ventricular ejection fraction (LVEF) ≤40%), and type 2 diabetes or prediabetes. Patients with atrial fibrillation/flutter were excluded to avoid image degradation. Patients were randomly assigned 1:1 to empagliflozin 10mg daily or placebo. EAT volume was quantified using cardiovascular magnetic resonance (CMR) cine imaging at baseline and week 36, and reported as: (a) total EAT volume (mL); (b) EAT volume indexed to body surface area (mL/m2); (c) % change from baseline. Observers were blinded to subject identification, scan date, clinical data, and randomization arm. Scans with major artefacts were not analysed.

Results
One hundred five patients were randomly assigned: mean age 68.7 (SD, 11.1) years, 77 (73.3%) male, 82 (78.1%) diabetes and 23 (21.9%) prediabetes, mean LVEF 32.5% (9.8%). Baseline EAT volume was available in 101 patients (median [IQR] 85 [67-104] mL and 41 [34-52] mL/m2). Paired baseline and 36-week EAT volume was available in 90 patients. Higher baseline total EAT volume was associated with male gender, higher body mass index, coronary artery disease, elevated serum creatinine, higher left ventricular end-diastolic volume, and higher left ventricular mass (TABLE). EAT volume changed by -2.7 mL / -1.3 mL/m2 / -3.1% in the empagliflozin group versus 0.3 mL / 0.3 mL/m2 / 1.5% in the placebo group (between-group difference -3.4 mL, 95% CI -6.7 to -0.1; p=0.045 and -1.7 mL/m2, 95% CI -3.4 to -0.04; p=0.045) at 36 weeks (FIGURE). The beneficial reduction in left ventricular end-systolic volume indexed to body surface area observed with empagliflozin treatment was not modified by baseline total or indexed EAT volumes (p interaction=0.31 and 0.45, respectively).

Conclusion
Empagliflozin treatment significantly reduced EAT volume. This may represent an additional benefit of SGLT2 inhibition in HFrEF.
Left atrial reservoir strain and global longitudinal strain associates with re-hospitalization and mortality in patients admitted for acute heart failure
Authors: Zilic H , Holm H , Jujic A , Magnusson M 
Published: October 2024

Abstract

Background
Left atrial reservoir strain (LAr) and global longitudinal strain (GLS) have emerged as useful parameters for the assessment of left ventricular diastolic function and the estimation of left ventricular filling pressures. Yet, there remains a gap of knowledge regarding the possible association of LAr and GLS with re-hospitalization and mortality in patients with acute heart failure (HF).

Aims
This study aims to investigate the association between LAr and GLS with re-hospitalization and mortality in patients admitted for acute HF.

Methods
Out of 526 enrolled patients admitted for acute HF, 142 (mean age 71, 25% women) were systematically evaluated for LAr and GLS using speckle tracking echocardiography. Multivariable Cox regression analyses, adjusting age, sex, current smoking prevalent atrial fibrillation, hypertension, kidney disease and plasma glucose, were used to assess the associations between continuous values of LAr and GLS with all-cause mortality and HF-related re-hospitalization.

Results
The median follow-up time to death of any cause and HF rehospitalization was 39 (interquartile range 14-66) and 22 (4-51) months, respectively. During follow up, 63 (44%) patients died, and 63 (44%) were re-hospitalized due to HF. Lower values of LAr were significantly associated with higher risk of mortality (HR 0.93; 95%CI 0.89-0.98, p=0.008). Similarly, lower GLS was associated with higher risk of mortality (HR 0.94; 95%CI 0.89-0.99, p=0.045). Only lower values of LAr were associated with higher risk of HF re-hospitalization in the multivariable model (HR 0.93; 95%CI 0.88-0.98, p=0.004).

Conclusion
In this prospective, long-term follow-up study of patients with acute heart failure, lower values of LAr and GLS showed prognostic significance, with lower values being indicative of poorer outcomes. Notably, LAr was associated with higher risk of both death and rehospitalization for heart failure, whereas GLS was solely associated with higher mortality risk. These echocardiographic parameters could be further investigated for risk assessment of patients with heart failure in order to identify those at higher risk of rehospitalization and death, thereby facilitating targeted interventions to improve their prognosis.KM-curves for or the Quartiles of LAr