35 results on '"Elke Boxhammer"'
Search Results
2. Can Radiological Renal Artery Parameters Predict Acute Kidney Injury in Infective Endocarditis Surgery?—From Imaging to Outcomes
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Christian Dinges, Elke Boxhammer, Iris Kremser, Katja Gansterer, Johannes Steindl, Nikolaos Schörghofer, Christoph Knapitsch, Reinhard Kaufmann, Uta C. Hoppe, Matthias Hammerer, Klaus Hergan, and Bernhard Scharinger
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acute kidney injury ,computed tomography ,endocarditis ,renal artery anatomy ,renal artery calcifications ,valve surgery ,Medicine (General) ,R5-920 - Abstract
Background: Infective endocarditis (IE) poses significant challenges in cardiovascular medicine, often necessitating valvular surgery to manage severe complications. Postoperative acute kidney injury (AKI) is a notable complication affecting patient outcomes. While clinical and procedural factors have been well studied, the role of radiological renal artery parameters in AKI risk remains underexplored. Methods: This retrospective study analyzed 80 patients with IE who underwent valvular surgery from 2013 to 2021, focusing on postoperative AKI as defined by the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Radiological parameters, including renal artery calcification, renal ostial calcification, the presence of renal infarctions, and additional arteries, were assessed using preoperative computed tomography (CT). Statistical analyses included binary logistic and linear regression models, Kaplan–Meier survival curves, and Cox proportional hazard regression to explore associations between these parameters and AKI incidence, creatinine levels, and mortality. Results: Out of 80 patients, 31 (38.8%) developed AKI. No significant differences were found in baseline characteristics or radiological parameters between the AKI+ and AKI− groups. Binary logistic and linear regression analyses revealed no substantial relationship between anatomical factors and AKI risk or creatinine levels. However, Cox regression identified “additional renal artery” as a significant predictor of 1-month mortality (HR: 1.747, 95% CI: 1.024–2.979, p = 0.041) but not for 6- or 12-month mortality. Conclusions: Radiological anatomical factors, including calcifications and additional arteries, did not significantly impact AKI risk in IE patients undergoing valvular surgery. However, the presence of additional arteries was associated with increased short-term mortality. These findings suggest the need for further research to elucidate factors contributing to AKI and mortality in this context.
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- 2024
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3. Impact of Psoas Muscle Area Index on Short- and Mid-Term Mortality in Patients Undergoing Valve Surgery for Infective Endocarditis: A Retrospective Analysis
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Christian Dinges, Matthias Hammerer, Nikolaos Schörghofer, Christoph Knapitsch, Gretha Hecke, Sophie Klaus, Johannes Steindl, Richard Rezar, Rainald Seitelberger, Uta C. Hoppe, Klaus Hergan, Elke Boxhammer, and Bernhard Scharinger
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computed tomography ,endocarditis ,psoas muscle area index ,sarcopenia ,valve surgery ,Medicine (General) ,R5-920 - Abstract
Background: Sarcopenia, characterized by the loss of skeletal muscle mass, is an emerging comorbidity associated with poor outcomes in cardiovascular surgery. Its impact on mortality in patients undergoing valve surgery for infective endocarditis (IE) remains underexplored. This study investigates the relationship between sarcopenia, measured by the Psoas muscle area index (PMAi), and mortality in patients with IE undergoing valve surgery. Materials and Methods: We retrospectively analyzed 68 patients with IE who underwent valve surgery at a tertiary care center from 2013 to 2021. Sarcopenia was defined as being in the lowest quartile of PMAi, measured via preoperative computed tomography (CT). Baseline characteristics, survival outcomes, and factors influencing mortality were analyzed using Kaplan–Meier survival curves and Cox proportional hazards regression. The predictive value of PMAi for 1-year and 3-year mortality was assessed via receiver operating characteristic (ROC) curves. Results: Sarcopenia was strongly associated with increased mortality at both 1-year (HR: 0.378, p = 0.010) and 3-year follow-ups (HR: 0.457, p = 0.012). Female sex (OR: 275.748, p < 0.001) and older age (OR: 9.995, p = 0.003) were significant predictors of sarcopenia. Chronic kidney insufficiency (CKI) and the use of heart failure medication therapy also significantly impacted survival outcomes. Conclusions: Sarcopenia is a strong independent predictor of short- and mid-term mortality in patients undergoing valve surgery for IE. Routine radiological assessment of sarcopenia using PMAi could improve risk stratification and guide preoperative interventions. Tailored management strategies, especially in older women and patients with CKI, may enhance outcomes in this high-risk population.
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- 2024
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4. The Silent Threat: A Retrospective Cohort Study on the Impact of Prediabetes on ST-Elevation Myocardial Infarction Survival—A Call to Action!
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Elke Boxhammer, Matthias Hammerer, Christiana Schernthaner, Erika Prinz, Mathias C. Brandt, Michael Lichtenauer, Alexander E. Berezin, Wilfried Wintersteller, Uta C. Hoppe, and Kristen L. Kopp
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cardiovascular disease ,diabetes ,glycemic status ,prediabetes ,STEMI ,Biology (General) ,QH301-705.5 - Abstract
Background: Prediabetes is frequently underdiagnosed and undertreated, yet it poses significant cardiovascular risks. This study investigates the impact of prediabetes on short- and long-term survival outcomes in patients who experienced ST-elevation myocardial infarction (STEMI). Methods: In this retrospective, single-center cohort study, we evaluated 725 STEMI patients stratified into non-diabetic, prediabetic, and diabetic groups based on HbA1c levels at presentation. A Kaplan–Meier survival analysis was employed to compare long-term outcomes over a three-year follow-up period. Cardiovascular risk factors, including hypertension and dyslipidemia, were analyzed across the groups. The discriminatory power of HbA1c for predicting all-cause mortality was assessed using an Area Under the Receiver Operating Characteristic (AUROC) analysis. Results: Of the 725 patients, 407 (56.1%) were non-diabetic, 184 (25.4%) were prediabetic, and 134 (18.5%) were diabetic. Prediabetic patients exhibited significant additional cardiovascular risk factors, such as arterial hypertension (67.4%) and dyslipidemia (78.3%), with prevalence rates between those of non-diabetic and diabetic patients. The Kaplan–Meier analysis revealed that at a three-year follow-up, prediabetic patients faced a survival disadvantage, with a significant decrease in survival rates compared to non-diabetic patients (log-rank p = 0.016); their survival outcomes approached those of diabetic patients (p = 0.125). The AUROC analysis demonstrated that HbA1c was a significant predictor of short- and long-term mortality, with a cut-off value of 5.75% and an Area Under the Curve (AUC) of 0.580–0.617 (95% CI: 0.458–0.721), indicating a moderate ability to predict survival in patients with STEMI. Conclusions: Prediabetes significantly worsens survival outcomes following STEMI, nearly approaching the risk level of diabetes. Integrating rigorous cardiovascular risk management strategies for prediabetic individuals, including lifestyle interventions and potentially pharmacological treatments, could prevent the progression to diabetes and mitigate associated cardiovascular risks.
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- 2024
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5. Large Bouncing Mass in the Right Atrium
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Lukas Schmidbauer, MD, Bernhard Scharinger, MD, Andreas Vötsch, MD, Stefan Hecht, MD, Klaus Hergan, MD, Uta C. Hoppe, MD, Rainald Seitelberger, MD, Michael Lichtenauer, MD, PhD, and Elke Boxhammer, MD
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cardiac metastasis ,malignant melanoma ,metastasis resection ,pulmonary embolism ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
This paper presents a rare case of malignant melanoma metastasizing to the heart, highlighting the diagnostic journey, therapeutic considerations, and clinical implications. Enhanced awareness of atypical metastases aids early recognition and treatment strategies for improved patient care. Comprehensive understanding of cardiac involvement in melanoma contributes to better outcomes and clinical decision making. (Level of Difficulty: Beginner.)
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- 2023
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6. Impact of cavotricuspid isthmus ablation for typical atrial flutter and heart failure in the elderly—results of a retrospective multi-center study
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Elke Boxhammer, Meriem Bellamine, Istvan Szendey, Mike Foresti, Marc Bonsels, Joseph Kletzer, Peter Jirak, Albert Topf, Johannes Kraus, Lukas Fiedler, Anna-Maria Dieplinger, Uta C. Hoppe, Bernhard Strohmer, Lars Eckardt, Rudin Pistulli, Lukas J. Motloch, and Robert Larbig
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atrial flutter ,cavotricuspid isthmus ablation ,HFrEF ,HFmrEF ,heart failure ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
IntroductionWhile in the CASTLE-AF trial, in patients with atrial fibrillation and heart failure with reduced ejection fraction, interventional therapy using pulmonary vein isolation was associated with outcome improvement, data on cavotricuspid isthmus ablation (CTIA) in atrial flutter (AFL) in the elderly is rare.MethodsWe included 96 patients between 60 and 85 years with typical AFL and heart failure with reduced or mildly reduced ejection fraction (HFrEF/HFmrEF) treated in two medical centers. 48 patients underwent an electrophysiological study with CTIA, whereas 48 patients received rate or rhythm control and guideline-compliant heart failure therapy. Patients were followed up for 2 years, with emphasis on left ventricular ejection fraction (LVEF) over time. Primary endpoints were cardiovascular mortality and hospitalization for cardiac causes.ResultsPatients with CTIA showed a significant increase in LVEF after 1 (p
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- 2023
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7. MicroRNA-30d-5p—A Potential New Therapeutic Target for Prevention of Ischemic Cardiomyopathy after Myocardial Infarction
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Elke Boxhammer, Vera Paar, Bernhard Wernly, Attila Kiss, Moritz Mirna, Achim Aigner, Eylem Acar, Simon Watzinger, Bruno K. Podesser, Roland Zauner, Verena Wally, Michael Ablinger, Matthias Hackl, Uta C. Hoppe, and Michael Lichtenauer
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cardioprotection ,ischemic cardiomyopathy ,miR-30d-5p ,myocardial infarction ,Cytology ,QH573-671 - Abstract
(1) Background and Objective: MicroRNAs (miRs) are biomarkers for assessing the extent of cardiac remodeling after myocardial infarction (MI) and important predictors of clinical outcome in heart failure. Overexpression of miR-30d-5p appears to have a cardioprotective effect. The aim of the present study was to demonstrate whether miR-30d-5p could be used as a potential therapeutic target to improve post-MI adverse remodeling. (2) Methods and Results: MiR profiling was performed by next-generation sequencing to assess different expression patterns in ischemic vs. healthy myocardium in a rat model of MI. MiR-30d-5p was significantly downregulated (p < 0.001) in ischemic myocardium and was selected as a promising target. A mimic of miR-30d-5p was administered in the treatment group, whereas the control group received non-functional, scrambled siRNA. To measure the effect of miR-30d-5p on infarct area size of the left ventricle, the rats were randomized and treated with miR-30d-5p or scrambled siRNA. Histological planimetry was performed 72 h and 6 weeks after induction of MI. Infarct area was significantly reduced at 72 h and at 6 weeks by using miR-30d-5p (72 h: 22.89 ± 7.66% vs. 35.96 ± 9.27%, p = 0.0136; 6 weeks: 6.93 ± 4.58% vs. 12.48 ± 7.09%, p = 0.0172). To gain insight into infarct healing, scratch assays were used to obtain information on cell migration in human umbilical vein endothelial cells (HUVECs). Gap closure was significantly faster in the mimic-treated cells 20 h post-scratching (12.4% more than the scrambled control after 20 h; p = 0.013). To analyze the anti-apoptotic quality of miR-30d-5p, the ratio between phosphorylated p53 and total p53 was evaluated in human cardiomyocytes using ELISA. Under the influence of the miR-30d-5p mimic, cardiomyocytes demonstrated a decreased pp53/total p53 ratio (0.66 ± 0.08 vs. 0.81 ± 0.17), showing a distinct tendency (p = 0.055) to decrease the apoptosis rate compared to the control group. (3) Conclusion: Using a mimic of miR-30d-5p underlines the cardioprotective effect of miR-30d-5p in MI and could reduce the risk for development of ischemic cardiomyopathy.
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- 2023
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8. Serum Levels of Irisin Predict Cumulative Clinical Outcomes in Heart Failure Patients With Type 2 Diabetes Mellitus
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Alexander A. Berezin, Michael Lichtenauer, Elke Boxhammer, Ivan M. Fushtey, and Alexander E. Berezin
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heart failure ,irisin ,natriuretic peptides ,type 2 diabetes mellitus ,prediction ,Physiology ,QP1-981 - Abstract
Background: The aim of this study was to investigate the role of serum irisin level in predicting clinical outcome in heart failure (HF) patients with type 2 diabetes mellitus (T2DM).Methods: 153 T2DM patients with HF aged 41–62 years were prospectively recruited for the study. Serum levels of irisin and NT-proBNP were measured by ELISA. Laboratory tests including HbA1c, fasting glucose, blood creatinine, insulin, lipids and creatinine with estimation of GFR were performed along with echocardiography at baseline. The observation period was 56 weeks.Results: We identified 76 composite cardiovascular (CV) outcomes, which included CV death and death from all causes, resuscitated cardiac death, non-fatal/fatal acute myocardial infarction or stroke, and HF hospitalization. Therefore, the entire patient cohort was divided into 2 groups with (n = 76) and without (n = 77) composite CV outcomes. We found that the concentrations of NT-proBNP were higher in HF patients with T2DM who had a CV composite outcome than in patients without CV composite outcome (p = 0.001). In contrast, the relationship was exactly reversed for irisin, as HF and T2DM patients with CV composite outcome had significantly lower irisin levels (p = 0.001). Unadjusted multivariate Cox regression analyses showed that LVEF < 40%, LAVI > 39 ml/m2, NT-proBNP > 2,250 pmol/ml, and irisin < 6.50 ng/ml were the strongest predictors of CV outcomes in HF patients with T2DM. After adjustment for LVEF, serum levels of NT-proBNP and irisin remained independent predictors of end points. Furthermore, divergence of Kaplan-Meier curves pointed out that patients with NT-proBNP > 2,250 pmol/ml and irisin < 6.50 ng/ml had worse prognosis than those with any other compartment of the bomarkers’ levels.Conclusion: Adding irisin to NT-proBNP significantly improved discriminative value of the whole model. HF patients with T2DM had significantly worse clinical outcomes when showing the constellation NT-proBNP > 2,250 pmol/ml and irisin < 6.50 ng/ml, respectively, in comparison to patients with opposite trends for both biomarkers.
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- 2022
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9. Biomarkers of Atrial Fibrillation Recurrence in Patients with Paroxysmal or Persistent Atrial Fibrillation Following External Direct Current Electrical Cardioversion
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Ozan Demirel, Alexander E. Berezin, Moritz Mirna, Elke Boxhammer, Sarah X. Gharibeh, Uta C. Hoppe, and Michael Lichtenauer
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atrial fibrillation ,electrical cardioversion ,post-procedural complications ,biomarkers ,Biology (General) ,QH301-705.5 - Abstract
Atrial fibrillation (AF) is associated with atrial remodeling, cardiac dysfunction, and poor clinical outcomes. External direct current electrical cardioversion is a well-developed urgent treatment strategy for patients presenting with recent-onset AF. However, there is a lack of accurate predictive serum biomarkers to identify the risks of AF relapse after electrical cardioversion. We reviewed the currently available data and interpreted the findings of several studies revealing biomarkers for crucial elements in the pathogenesis of AF and affecting cardiac remodeling, fibrosis, inflammation, endothelial dysfunction, oxidative stress, adipose tissue dysfunction, myopathy, and mitochondrial dysfunction. Although there is ample strong evidence that elevated levels of numerous biomarkers (such as natriuretic peptides, C-reactive protein, galectin-3, soluble suppressor tumorigenicity-2, fibroblast growth factor-23, turn-over collagen biomarkers, growth differential factor-15) are associated with AF occurrence, the data obtained in clinical studies seem to be controversial in terms of their predictive ability for post-cardioversion outcomes. Novel circulating biomarkers are needed to elucidate the modality of this approach compared with conventional predictive tools. Conclusions: Biomarker-based strategies for predicting events after AF treatment require extensive investigation in the future, especially in the presence of different gender and variable comorbidity profiles. Perhaps, a multiple biomarker approach exerts more utilization for patients with different forms of AF than single biomarker use.
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- 2023
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10. Cardiac Hepatopathy: New Perspectives on Old Problems through a Prism of Endogenous Metabolic Regulations by Hepatokines
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Alexander A. Berezin, Zeljko Obradovic, Tetiana A. Berezina, Elke Boxhammer, Michael Lichtenauer, and Alexander E. Berezin
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heart failure ,cardiac hepatopathy ,inflammation ,oxidative stress ,hepatokines ,adropin ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Cardiac hepatopathy refers to acute or chronic liver damage caused by cardiac dysfunction in the absence of any other possible causative reasons of liver injury. There is a large number of evidence of the fact that cardiac hepatopathy is associated with poor clinical outcomes in patients with acute or actually decompensated heart failure (HF). However, the currently dominated pathophysiological background does not explain a role of metabolic regulative proteins secreted by hepatocytes in progression of HF, including adverse cardiac remodeling, kidney injury, skeletal muscle dysfunction, osteopenia, sarcopenia and cardiac cachexia. The aim of this narrative review was to accumulate knowledge of hepatokines (adropin; fetuin-A, selenoprotein P, fibroblast growth factor-21, and alpha-1-microglobulin) as adaptive regulators of metabolic homeostasis in patients with HF. It is suggested that hepatokines play a crucial, causative role in inter-organ interactions and mediate tissue protective effects counteracting oxidative stress, inflammation, mitochondrial dysfunction, apoptosis and necrosis. The discriminative potencies of hepatokines for HF and damage of target organs in patients with known HF is under on-going scientific discussion and requires more investigations in the future.
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- 2023
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11. The Presence of Ascending Aortic Dilatation in Patients Undergoing Transcatheter Aortic Valve Replacement Is Negatively Correlated with the Presence of Diabetes Mellitus and Does Not Impair Post-Procedural Outcomes
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Elke Boxhammer, Stefan Hecht, Reinhard Kaufmann, Jürgen Kammler, Jörg Kellermair, Christian Reiter, Kaveh Akbari, Hermann Blessberger, Clemens Steinwender, Michael Lichtenauer, Uta C. Hoppe, Klaus Hergan, and Bernhard Scharinger
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aortic valve stenosis ,ascending aorta ectasia ,biomarker ,computed tomography ,diabetes mellitus ,TAVR ,Medicine (General) ,R5-920 - Abstract
Both relevant aortic valve stenosis (AS) and aortic valve insufficiency significantly contribute to structural changes in the ascending aorta (AA) and thus to its dilatation. In patients with severe AS undergoing transcatheter aortic valve replacement (TAVR), survival data regarding aortic changes and laboratory biomarker analyses are scarce. Methods: A total of 179 patients with severe AS and an available computed tomography were included in this retrospective study. AA was measured, and dilatation was defined as a diameter ≥ 40 mm. Thirty-two patients had dilatation of the AA. A further 32 patients from the present population with a normal AA were matched to the aortic dilatation group with respect to gender, age, body mass index and body surface area, and the resulting study groups were compared with each other. In addition to echocardiographic and clinical characteristics, the expression of cardiovascular biomarkers such as brain natriuretic peptide (BNP), soluble suppression of tumorigenicity-2 (sST2), growth/differentiation of factor-15 (GDF-15), heart-type fatty-acid binding protein (H-FABP), insulin-like growth factor binding protein 2 (IGF-BP2) and soluble urokinase-type plasminogen activator receptor (suPAR) was analyzed. Kaplan–Meier curves for short- and long-term survival were obtained, and Pearson’s and Spearman’s correlations were calculated to identify the predictors between the diameter of the AA and clinical parameters. Results: A total of 19% of the total cohort had dilatation of the AA. The study group with an AA diameter ≥ 40 mm showed a significantly low comorbidity with respect to diabetes mellitus in contrast to the comparison cohort with an AA diameter < 40 mm (p = 0.010). This result continued in the correlation analyses performed, as the presence of diabetes mellitus correlated negatively not only with the diameter of the AA (r = −0.404; p = 0.001) but also with the presence of aortic dilatation (r = −0.320; p = 0.010). In addition, the presence of AA dilatation after TAVR was shown to have no differences in terms of patient survival at 1, 3 and 5 years. There were no relevant differences in the cardiovascular biomarkers studied between the patients with dilated and normal AAs. Conclusion: The presence of AA dilatation before successful TAVR was not associated with a survival disadvantage at the respective follow-up intervals of 1, 3 and 5 years. Diabetes mellitus in general seemed to have a protective effect against the development of AA dilatation or aneurysm in patients with severe AS.
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- 2023
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12. A Story of PA/BSA and Biomarkers to Diagnose Pulmonary Hypertension in Patients with Severe Aortic Valve Stenosis—The Rise of IGF-BP2 and GDF-15
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Joseph Kletzer, Stefan Hecht, Susanne Ramsauer, Bernhard Scharinger, Reinhard Kaufmann, Jürgen Kammler, Jörg Kellermair, Kaveh Akbari, Hermann Blessberger, Clemens Steinwender, Klaus Hergan, Uta C. Hoppe, Michael Lichtenauer, and Elke Boxhammer
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aortic valve stenosis ,biomarker ,computed tomography ,pulmonary hypertension ,PA/BSA ,TAVR ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
(1) Background: Currently, echocardiography is the primary non-invasive diagnostic method used to screen patients with severe aortic valve stenosis (AS) for pulmonary hypertension (PH) by estimating systolic pulmonary artery pressure (sPAP). Other radiological methods have been a focus of research in the past couple of years, as it was shown that by determining the pulmonary artery (PA) diameter, prognostic statements concerning overall mortality could be made in these patients. This study compared established and novel cardiovascular biomarkers with the PA/BSA value to detect PH in patients with severe AS. (2) Methods: The study cohort comprised 188 patients with severe AS undergoing transcatheter aortic valve replacement (TAVR), who were then divided into two groups based on PA/BSA values obtained through CT-angiography. The presence of PH was defined as a PA/BSA ≥ 16.6 mm/m2 (n = 81), and absence as a PA/BSA < 16.6 mm/m2 (n = 107). Blood samples were taken before TAVR to assess cardiovascular biomarkers used in this study, namely brain natriuretic peptide (BNP), cardiac troponin I (cTnI), high-sensitive troponin (hsTN), soluble suppression of tumorigenesis-2 (sST2), growth/differentiation factor 15 (GDF-15), heart-type fatty acid-binding protein (H-FABP), insulin-like growth factor binding protein 2 (IGF-BP2), and soluble urokinase-type plasminogen activator receptor (suPAR). (3) Results: Patients with a PA/BSA ≥ 16.6 mm/m2 showed significantly higher levels of BNP (p = p = 0.040), and H-FABP (p = 0.007). The other investigated cardiovascular biomarkers did not significantly differ between the two groups. To predict a PA/BSA ≥ 16.6 mm/m2, cut-off values for the biomarkers were calculated. Here, GDF-15 (p = 0.029; cut-off 1172.0 pg/mL) and BNP (p < 0.001; cut-off 2194.0 pg/mL) showed significant results. Consequently, analyses of combined biomarkers were performed, which yielded IGF-BP2 + BNP (AUC = 0.721; 95%CI = 0.585–0.857; p = 0.004) as the best result of the two-way analyses and GDF-15 + IGF-BP2 + BNP (AUC = 0.727; 95%CI = 0.590–0.864; p = 0.004) as the best result of the three-way analyses. No significant difference regarding the 1-year survival between patients with PA/BSA < 16.6 mm/m2 and patients with PA/BSA ≥ 16.6 mm/m2 was found (log-rank test: p = 0.452). (4) Conclusions: Although PA/BSA aims to reduce the bias of the PA value caused by different body compositions and sizes, it is still a controversial parameter for diagnosing PH. Combining the parameter with different cardiovascular biomarkers did not lead to a significant increase in the diagnostic precision for detecting PH in patients with severe AS.
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- 2023
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13. Interplay between Myokine Profile and Glycemic Control in Type 2 Diabetes Mellitus Patients with Heart Failure
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Alexander A. Berezin, Zeljko Obradovic, Evgen V. Novikov, Elke Boxhammer, Michael Lichtenauer, and Alexander E. Berezin
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type 2 diabetes mellitus ,heart failure ,myokines ,irisin ,apelin ,myostatin ,Medicine (General) ,R5-920 - Abstract
Type 2 diabetes mellitus (T2DM) remains a powerful predictor of progressive heart failure (HF), but it is not clear whether altered glycemic control interferes with HF progression via an impaired profile of circulating myokines. The aim was to investigate plausible effects of glucose control on a myokine signature in T2DM patients affected by chronic HF. We selected 372 T2DM patients from the local database and finally included 314 individuals suffering from chronic HF and subdivided them into two groups according to glycosylated hemoglobin (HbA1c) levels (p = 0.04) and irisin (OR = 1.09; 95% CI = 1.04–1.17, p = 0.001) remained independent predictors of the dependent variable. In conclusion, we found that decreased levels of irisin were associated with poor glycemic control in T2DM patients with HF regardless of clinical conditions and other biomarkers.
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- 2022
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14. Discriminative Value of Serum Irisin in Prediction of Heart Failure with Different Phenotypes among Patients with Type 2 Diabetes Mellitus
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Alexander A. Berezin, Michael Lichtenauer, Elke Boxhammer, Eric Stöhr, and Alexander E. Berezin
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heart failure with preserved ejection fraction ,heart failure with mildly reduced ejection fraction ,heart failure with reduced ejection fraction ,type 2 diabetes mellitus ,irisin ,natriuretic peptides ,Cytology ,QH573-671 - Abstract
Recent studies have shown that circulating levels of irisin are prognostic factors in heart failure (HF), but no data are available on the predictive role of irisin in patients with type 2 diabetes mellitus (T2DM) and different phenotypes of HF. The aim of the study was to investigate whether serum levels of irisin predict HF in T2DM patients. We prospectively included 183 participants with T2DM aged 41 to 62 years (30 non-HF patients and 153 HF patients) and 25 healthy volunteers in the study and evaluated clinical data, hemodynamics and biomarkers (N-terminal pro-brain natriuretic peptide (NT-proBNP) and irisin). Serum levels of irisin < 8.30 ng/mL were found to be a better indicator of HF with reduced ejection fraction (HFrEF) than irisin ≥ 8.30 ng/mL, but the predictive cut-off point for NT-proBNP remained the same as for HF with mildly reduced ejection fraction (HFmrEF). Serum levels of irisin < 10.4 ng/mL significantly improved the predictive ability of NT-proBNP for HF with preserved ejection fraction (HFpEF). In conclusion, we found that decreased serum levels of irisin significantly predicted HFpEF, rather than HFmrEF and HFrEF, in T2DM patients. This finding may open a new approach to HF risk stratification in T2DM patients.
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- 2022
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15. Conundrum of Classifying Subtypes of Pulmonary Hypertension—Introducing a Novel Approach to Classify 'Borderline' Patients in a Population with Severe Aortic Stenosis Undergoing TAVI
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Elke Boxhammer, Sarah X. Gharibeh, Bernhard Wernly, Malte Kelm, Marcus Franz, Daniel Kretzschmar, Uta C. Hoppe, Alexander Lauten, and Michael Lichtenauer
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aortic valve stenosis ,pre-capillary ,post-capillary ,pulmonary hypertension ,right heart catheter ,TAVI ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Transcatheter aortic valve implantation (TAVI) is an established therapeutic option in patients with severe aortic valve stenosis (AS) and a high surgical risk profile. Pulmonary hypertension (PH)—often co-existing with severe AS—is associated with a limited factor for prognosis and survival. The purpose of this study was to evaluate the prevalence of PH in patients undergoing TAVI, classify these patients based on right heart catheter (RHC) measurements in different PH subtypes, and analyze prognostic values on survival after TAVI. Methods: 284 patients with severe AS underwent an RHC examination for hemodynamic assessment prior to TAVI and were categorized into subtypes of PH according to the 2015 European Society of Cardiology (ESC) guidelines. TAVI patients were followed-up with for one year with regard to 30-days and 1-year mortality as primary endpoints. Results: 74 of 284 participants showed a diastolic pressure gradient (DPG) < 7 mmHg and a pulmonary vascular resistance (PVR) > 3 Wood units (WU) and could not be formally allocated to either isolated post-capillary PH (ipc-PH) or combined pre- and post-capillary PH (cpc-PH). Therefore, a new subgroup called “borderline post-capillary PH” (borderlinepc-PH) was introduced. Compared with TAVI patients with pre-capillary PH (prec-PH), ipc-PH patients suffering from borderlinepc-PH (HR 7.114; 95% CI 2.015–25.119; p = 0.002) or cpc-PH (HR 56.459; 95% CI 7.738–411.924; p < 0.001) showed a significantly increased 1-year mortality. Conclusions: Postcapillary PH was expanded to include the so-called “borderlinepc-PH” variant in addition to the ipc-PH and cpc-PH subtypes. The one-year survival after TAVI was significantly different between the subgroups, with the worst prognosis for borderlinepc-PH and cpc-PH.
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- 2022
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16. Comparability between Computed Tomography Morphological Vascular Parameters and Echocardiography for the Assessment of Pulmonary Hypertension in Patients with Severe Aortic Valve Stenosis—Results of a Multi-Center Study
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Elke Boxhammer, Bernhard Scharinger, Reinhard Kaufmann, Herwig Brandtner, Lukas Schmidbauer, Jürgen Kammler, Jörg Kellermair, Christian Reiter, Kaveh Akbari, Matthias Hammerer, Hermann Blessberger, Clemens Steinwender, Klaus Hergan, Uta C. Hoppe, Michael Lichtenauer, and Stefan Hecht
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aortic valve stenosis ,computed tomography ,pulmonary hypertension ,systolic pulmonary artery pressure ,TAVR ,Medicine (General) ,R5-920 - Abstract
Background: Computed tomography (CT) of the aorta and cardiac vessels, which is performed in patients with severe aortic valve stenosis (AS) before transcatheter aortic valve replacement (TAVR), offers the possibility of non-invasive detection of pulmonary hypertension (PH), for example, by determining the diameter of the main pulmonary artery (PA), the right pulmonary artery (RPA) or the left pulmonary artery (LPA). An improvement of the significance of these radiological parameters is often achieved by indexing to the body surface area (BSA). The aim of this study was to compare different echocardiographic systolic pulmonary artery pressure (sPAP) values with radiological data in order to define potential clinical cut-off values for the presence or absence of PH. Methods: A total of 138 patients with severe AS undergoing TAVR underwent pre-interventional transthoracic echocardiography with determination of sPAP values and performance of CT angiography (CTA) of the aorta and femoral arteries. Radiologically, the PA, RPA, LPA, and ascending aorta (AA) diameters were obtained. Vascular diameters were not only indexed to BSA but also ratios were created with AA diameter (for example PA/AA-ratio). From these CT-derived vascular parameters, AUROC curves were obtained regarding the prediction of different sPAP values (sPAP 40–45–50 mmHg) and finally correlation analyses were calculated. Results: The best AUROC and correlation analyses were generally obtained at an sPAP ≥ 40 mmHg. When considering diameters alone, the PA diameter was superior to the RPA and LPA. Indexing to BSA generally increased the diagnostic quality of the parameters, and finally, in a synopsis of all results, PA/BSA had the best AUC 0.741 (95% CI 0.646–0. 836; p < 0.001; YI 0.39; sensitivity 0.87; specificity 0.52) and Spearman’s correlation coefficient (r = 0.408; p < 0.001) at an sPAP of ≥40 mmHg. Conclusions: Features related to pulmonary hypertension are fast and easily measurable on pre-TAVR CT and offer great potential regarding non-invasive detection of pulmonary hypertension in patients with severe AS and can support the echocardiographic diagnosis. In this study, the diameter of the main pulmonary artery with the additionally determined ratios were superior to the values of the right and left pulmonary artery. Additional indexing to body surface area and thus further individualization of the parameters with respect to height and weight can further improve the diagnostic quality.
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- 2022
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17. Systolic Pulmonary Artery Pressure and Cardiovascular Biomarkers—New Non-Invasive Ways to Detect Pulmonary Hypertension in Patients with Severe Aortic Valve Stenosis Undergoing TAVR?
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Elke Boxhammer, Clara Köller, Vera Paar, Dzeneta Fejzic, Richard Rezar, Christian Reiter, Jürgen Kammler, Jörg Kellermair, Matthias Hammerer, Hermann Blessberger, Clemens Steinwender, Uta C. Hoppe, and Michael Lichtenauer
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aortic valve stenosis ,biomarker ,pulmonary hypertension ,systolic pulmonary artery pressure ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Patients with severe aortic valve stenosis (AS) frequently present with pulmonary hypertension (PH). The gold standard for detection of pulmonary hypertension is right heart catheterization, which is not routinely performed as a preoperative standard in cardiology centers today, neither before surgical valve replacement nor before transcatheter aortic valve replacement (TAVR) procedure. Echocardiographic determination of systolic pulmonary artery pressure (sPAP) provides an opportunity to assess the presence or absence of PH. The aim of the present study was to investigate the extent to which plasma levels of common cardiovascular biomarkers behave in patients with severe AS and an sPAP
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- 2022
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18. How Do Cardiovascular Biomarkers Behave in Patients with Severe Aortic Valve Stenosis with and without Echocardiographically Proven Pulmonary Hypertension?—A Retrospective Study of Biomarker Trends before and after Transcatheter Aortic Valve Replacement
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Elke Boxhammer, Lukas Schmidbauer, Moritz Mirna, Vera Paar, Matthias Hammerer, Uta C. Hoppe, and Michael Lichtenauer
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aortic valve stenosis ,biomarker ,pulmonary hypertension ,systolic ,pulmonary artery pressure ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Background: Since right heart catheterization is rarely performed in patients with severe aortic valve stenosis (AS), echocardiography is currently the tool of choice to determine the presence or absence of pulmonary hypertension (PH). The systolic pulmonary artery pressure (sPAP) has established itself as a reliable measurement value for this purpose. The aim of our study was to evaluate the behavior of plasma-level concentrations of novel cardiovascular biomarkers (sST2, GDF-15, H-FABP, IGF-BP2, and suPAR) in patients with severe AS and an sPAP < 40 mmHg in comparison to patients with an sPAP ≥ 40 mmHg before transcatheter aortic valve replacement (TAVR) and after TAVR (24 h, 96 h, 3 months, and 12 months). Methods: We retrospectively separated 85 patients with echocardiographic evidence of severe AS before TAVR procedure into two groups based on sPAP level. An sPAP of 40 mmHg was considered the cut-off value, with the absence of PH defined by an sPAP < 40 mmH (n = 32) and the presence of PH defined by an sPAP ≥ 40 mmHg (n = 53). Blood samples were drawn from each patient one day before TAVR and 24 h, 96 h, 3 months, and 12 months after TAVR. Plasma concentrations of the cardiovascular biomarkers sST2, GDF-15, H-FABP, IGF-BP2, and suPAR were determined and analyzed with univariate and multivariate binary logistic regression and AUROC curves. Results: Patients with severe AS and an sPAP ≥ 40 mmHg had significantly higher plasma concentrations of H-FABP (baseline: p = 0.022; 24 h: p = 0.012; 96 h: p = 0.037; 3 months: p = 0.006; 12 months: p = 0.030) and IGF-BP2 (baseline: p = 0.029; 24 h: p = 0.012; 96 h: p = 0.001; 3 months: p = 0.015; 12 months: p = 0.022) before and continuously up to 12 months after TAVR than did patients with an sPAP < 40 mmHg sST2, with the exception of the 12-month follow-up. We also consistently found significantly higher plasma concentrations in the sPAP ≥ 40 mmHg group (baseline: p = 0.007; 24 h: p = 0.006; 96 h: p = 0.014; 3 months: p ≤ 0.001; 12 months: p = 0.092), whereas suPAR had significantly elevated values at baseline and after 24 h in patients with echocardiographic evidence of PH and significantly decreased values after 3 months (baseline: p = 0.003; 24 h p = 0.041; 96 h: p = 0.127; 3 months: p = 0.006; 12 months: p = 0.477). Plasma concentrations of GDF-15 were only significantly different after 24 h (baseline: p = 0.075; 24 h: p = 0.016; 96 h: p = 0.101; 3 months: p = 0.244; 12 months: p = 0.090). In a multivariate binary logistic regression, atrial fibrillation, tricuspid annular plane systolic excursion (TAPSE), and sST2 at baseline were found to have a significant p-value < 0.050. Conclusion: In this descriptive study, sST2, H-FABP, and IGF-BP2 emerged as the cardiovascular biomarkers with the greatest potential with respect to echocardiographically PH detection in long-term follow-up after TAVR, as patients with an sPAP ≥ 40 mmHg had significantly continuously higher plasma biomarker concentrations than the corresponding cohort did, with an sPAP < 40 mmHg.
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- 2022
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19. Soluble ST2 as a Potential Biomarker for Risk Assessment of Pulmonary Hypertension in Patients Undergoing TAVR?
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Elke Boxhammer, Moritz Mirna, Laura Bäz, Nina Bacher, Albert Topf, Brigitte Sipos, Marcus Franz, Daniel Kretzschmar, Uta C. Hoppe, Alexander Lauten, and Michael Lichtenauer
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aortic valve stenosis ,biomarker ,right heart catheterization ,soluble suppression of tumorigenicity-2 ,transcatheter aortic valve replacement ,Science - Abstract
Background: Severe aortic valve stenosis (AS) is associated with pulmonary hypertension (PH) and has been shown to limit patient survival. Soluble suppression of tumorigenicity-2 (sST2) is a cardiovascular biomarker that has proven to be an important prognostic marker for survival in patients undergoing transcatheter aortic valve replacement (TAVR). The aim of this study was to assess the importance of the sST2 biomarker for risk stratification in patients with severe AS in presence or absence of PH. Methods: In 260 patients with severe AS undergoing TAVR procedure, sST2 serum level concentrations were analyzed. Right heart catheter measurements were performed in 152 patients, with no PH detection in 43 patients and with PH detection in 109 patients. Correlation analyses according to Spearman, AUROC analyses and Kaplan–Meier curves were calculated. Results: Patients with severe AS and PH showed significantly higher serum sST2 concentrations (p = 0.006). The sST2 cut-off value for non-PH patients regarding 1-year survival yielded 5521.15 pg/mL, whereas the cut-off value of PH patients was at a considerably higher level of 10,268.78 pg/mL. A cut-off value of 6990.12 pg/mL was related with a significant probability of PH presence. Survival curves showed that patients with severe AS and PH not only had higher 1-year mortality, but also that increased levels of sST2 plasma concentration were associated with earlier death. Conclusion: sST2 definitely has the potential to provide information about the presence of PH in patients with severe AS, in a noninvasive way.
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- 2022
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20. Pretreatment with Betablockers, a Potential Predictor of Adverse Cardiovascular Events in Takotsubo Syndrome
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Albert Topf, Moritz Mirna, Christiane Dienhart, Peter Jirak, Nina Bacher, Elke Boxhammer, Sarah X. Gharibeh, Lukas J. Motloch, Uta C. Hoppe, and Michael Lichtenauer
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Takotsubo syndrome ,betablocker ,adverse cardiovascular events ,Biology (General) ,QH301-705.5 - Abstract
Introduction: Treatment with betablockers is controversial in Takotsubo syndrome (TTS); however, many physicians intuitively initiate or continue betablocker therapy in these patients. The effect of preadmission betablocker use on adverse cardiovascular events has not been studied in the literature. Methods: To investigate this issue, we evaluated clinical complications, defined by the endpoint of occurrence of hemodynamically relevant arrythmia, cardiac decompensation, and all-cause adverse cardiac events, during hospitalization, in 56 patients hospitalized for TTS between April 2017 and July 2021. We compared the risk of adverse cardiovascular events between patients with preadmission betablocker therapy and those without preadmission betablocker therapy. Pretreatment betablocker therapy was defined as daily betablocker intake for more than a week including day of admission. Results: TTS patients taking preadmission betablockers had a significantly increased risk of all-cause complications relative to patients without betablockers in preadmission medication ((52.0% vs. 19.4%, p = 0.010; OR 4.5 (95% Cl 1.38–14.80)). Furthermore, TTS patients already taking betablockers on admission showed a statistically significant increased risk of cardiac decompensation when compared to patients without pretreatment with betablockers (p = 0.013). There were no significant differences in patient characteristics in patients who were taking beta blockers as an adjunct therapy prior to admission for TTS relative to those who were not. There is however an increase in comorbidities, hypertension, and atrial fibrillation, in past medical history in patients taking a preadmission betablocker. The difference is related to therapeutic applications for beta blockers and was not significant based on endpoints of our study. Conclusions: Preadmission betablocker treatment was associated with a 4.5 times higher risk of adverse cardiac events. This increased risk of all-cause complications and of cardiac decompensation within the acute phase of TTS is presumably due to the negative inotropic effects of betablockers and upregulation of β-adrenergic receptors in patients with chronic betablocker therapy.
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- 2022
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21. Treatment with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) Does Not Affect Outcome in Patients with Acute Myocarditis or Myopericarditis
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Moritz Mirna, Lukas Schmutzler, Albert Topf, Elke Boxhammer, Brigitte Sipos, Uta C. Hoppe, and Michael Lichtenauer
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cardiology ,myocarditis ,inflammation ,ibuprofen ,aspirin ,acetylsalicylic acid ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Previous animal studies reported an association of non-steroidal anti-inflammatory drugs (NSAIDs) with adverse outcomes in acute myocarditis, which is why these drugs are currently not recommended in affected patients. In this retrospective case-control study, we sought to investigate the effects of NSAID treatment in patients with acute myocarditis and myopericarditis to complement the available evidence. Method: A total of 114 patients with acute myocarditis were retrospectively enrolled. Demographical, clinical and laboratory data were extracted from hospital records. Patients who received NSAIDs (n = 39, 34.2%) were compared to controls. Follow-up on all-cause mortality was acquired for two years. Propensity score matching was additionally conducted to account for covariate imbalances between groups. Results: Treatment with NSAIDs was neither associated with a worse outcome (p = 0.115) nor with significant differences in left ventricular systolic function (p = 0.228) or in-hospital complications (p = 0.507). Conclusion: Treatment with NSAIDs was not associated with adverse outcomes in our study cohort. Together with the findings of previous studies, our results indicate that these drugs could be safely administered in patients with myocarditis and myopericarditis.
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- 2022
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22. CT measured pulmonary artery to ascending aorta ratio stratified by echocardiographically obtained systolic pulmonary artery pressure values for noninvasive detection of pulmonary hypertension in patients with severe aortic valve stenosis
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Elke Boxhammer, Joseph Kletzer, Jörg Kellermair, Bernhard Scharinger, Reinhard Kaufmann, Matthias Hammerer, Hermann Blessberger, Clemens Steinwender, Michael Lichtenauer, Klaus Hergan, Uta C. Hoppe, and Stefan Hecht
- Subjects
General Medicine ,Cardiology and Cardiovascular Medicine - Abstract
Background Transthoracic echocardiography (TTE) offers a measurement method for the determination of pulmonary hypertension (PH) in patients with severe aortic valve stenosis (AS) with determination of maximal tricuspid regurgitation velocity (TRVmax) and systolic pulmonary artery pressure (sPAP). Radiological parameters for noninvasive detection of PH, most importantly computed tomography (CT) based PA/AA-ratio = ratio of pulmonary artery diameter (PA) and ascending aorta diameter (AA), are also included in the latest ESC guidelines. The aim of the present study was to define cut-off values for PA/AA-ratio taking also into account cardiovascular biomarkers to determine criteria for noninvasive diagnosis of PH. Methods 194 patients with severe AS undergoing transcatheter aortic valve replacement (TAVR) underwent pre-procedural TTE and CT with measurement of PA/AA-ratio. Additionally, common cardiovascular biomarkers were determined. Results TAVR patients with an sPAP ≥ 40 mmHg or a TRVmax ≥ 2.9 m/s had a PA/AA-ratio ≥ 0.80 in an AUROC analysis. The cut-off value of ≥ 0.80 resulted in a significantly higher mortality rate (log-rank test: p = 0.034) in these patients in a Kaplan–Meier analysis regarding 1-year survival after TAVR. Significant differences in biomarker expression between patients with a PA/AA-ratio ≥ 0.80 or Conclusion PA/AA-ratio ≥ 0.80 is a promising radiological parameter that can provide information about mortality in patients with severe AS undergoing TAVR; combined with biomarkers it may contribute to noninvasive detection of PH in patients with severe AS. Graphical abstract
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- 2023
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23. Tei Index Complements Conventional Echocardiographic Parameters in Diagnostic Workup of Suspected Takotsubo Syndrome
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Moritz Mirna, Fabian Vogl, Lukas Schmutzler, Richard Rezar, Elke Boxhammer, Albert Topf, Uta C. Hoppe, and Michael Lichtenauer
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General Medicine - Abstract
Background: Tei index (TI) is a combined myocardial performance index for overall cardiac function, the sensitivity of which seems to be better than that of systolic and diastolic parameters alone. Evidence for TI in the context of Takotsubo syndrome (TTS) is currently limited, which is why we chose to investigate this parameter in affected patients. Subjects and Methods: Patients with TTS (n = 51), acute coronary syndrome (ACS; n = 29) and controls (n = 58) were retrospectively investigated. Laboratory and echocardiographic parameters including TI were analyzed for their ability to discriminate TTS in the total study cohort. Results: TI was highest, and thus most pathological, in patients with TTS (median 0.516 vs. ACS: 0.355 vs. control: 0.313, p < 0.0001) and showed the best discriminatory ability for TTS (AUC: 0.836, p < 0.0001). A cut-off for diagnosis of TTS was calculated at ≥0.418 (specificity: 83.5%, sensitivity: 74.0%) by means of the Youden index. Conclusion: The discriminatory ability of TI was better than that of other echocardiographic parameters such as LV systolic function. Due to the simple, fast and inexpensive way of calculating TI, diagnostic workup with conventional parameters could be complemented by Tei index in patients with suspected Takotsubo syndrome.
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- 2022
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24. CT-Diagnosed Sarcopenia and Cardiovascular Biomarkers in Patients Undergoing Transcatheter Aortic Valve Replacement: Is It Possible to Predict Muscle Loss Based on Laboratory Tests?-A Multicentric Retrospective Analysis
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Stefan Hecht, Elke Boxhammer, Reinhard Kaufmann, Bernhard Scharinger, Christian Reiter, Jürgen Kammler, Jörg Kellermair, Matthias Hammerer, Hermann Blessberger, Clemens Steinwender, Uta C. Hoppe, Klaus Hergan, and Michael Lichtenauer
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Medicine (miscellaneous) ,aortic valve stenosis ,biomarker ,PMAi ,sarcopenia ,TAVR - Abstract
Background: Patients with severe aortic valve stenosis (AS) often present with heart failure and sarcopenia. Sarcopenia, described as progressive degradation of skeletal muscle mass, has frequently been implicated as a cause of increased mortality, prolonged hospitalization and generalized poor outcome after transcatheter aortic valve replacement (TAVR). At present, sarcopenia is defined by the European Working Group on Sarcopenia in Older People (EWGSOP) based on clinical examination criteria and radiological imaging. The aim of the present study was to compare patients with Computed Tomography (CT)-diagnosed sarcopenia with regard to the expression of cardiovascular biomarkers in order to obtain additional, laboratory-chemical information. Methods: A total of 179 patients with severe AS were included in this retrospective study. Sarcopenia was determined via CT by measurement of the psoas muscle area (PMA), which was indexed to body surface area (PMAi). According to previous studies, the lowest tertile was defined as sarcopenic. Patients with (59/179) and without sarcopenia (120/179) in the overall cohort were compared by gender-specific cut-offs with regard to the expression of cardiovascular biomarkers such as brain natriuretic peptide (BNP), soluble suppression of tumorigenicity-2 (sST2), growth/differentiation of factor-15 (GDF-15), heart-type fatty-acid binding protein (H-FABP), insulin like growth factor binding protein 2 (IGF-BP2) and soluble urokinase-type plasminogen activator receptor (suPAR). Additionally, binary logistic regression analyses were calculated to detect possible predictors of the presence of sarcopenia. Results: No statistical differences regarding one-year survival could be detected between sarcopenic and non-sarcopenic patients in survival curves (log rank test p = 0.179). In the entire cohort, only BNP and hemoglobin (HB) showed a statistically significant difference, with only HB emerging as a relevant predictor for the presence of sarcopenia after binary logistic regression analysis (p = 0.015). No relevant difference in biomarker expression could be found in the male cohort. Regarding the female cohort, statistically significant differences were found in BNP, HB and hematocrit (HK). In binary logistic regression, however, none of the investigated criteria could be related to sarcopenia. Conclusion: Regardless of gender, patients with imaging-based muscle degradation did not demonstrate significantly different cardiovascular biomarker expression compared to those without it.
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- 2022
25. Melatonin More Than Just a Sleeping Hormone
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Elke, Boxhammer and Michael, Lichtenauer
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Sleep ,Circadian Rhythm ,Melatonin - Published
- 2022
26. Editorial commentary: Melatonin more than just a sleeping hormone
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Elke Boxhammer and Michael Lichtenauer
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Pharmacology ,Cardiology and Cardiovascular Medicine - Published
- 2022
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27. Main pulmonary artery diameter in combination with cardiovascular biomarkers. New possibilities to identify pulmonary hypertension in patients with severe aortic valve stenosis?
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Elke, Boxhammer, Vera, Paar, Peter, Jirak, Clara, Köller, Ozan, Demirel, Sarah, Eder, Christian, Reiter, Jürgen, Kammler, Jörg, Kellermair, Matthias, Hammerer, Hermann, Blessberger, Clemens, Steinwender, Uta C, Hoppe, and Michael, Lichtenauer
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General Medicine - Abstract
Echocardiography is currently the noninvasive method of choice to screen patients with severe aortic valve stenosis (AS) for pulmonary hypertension (PH) by estimating systolic pulmonary artery pressure (sPAP). However, radiological options are also available by determining the main pulmonary artery (MPA) diameter in the setting of CT angiography. The aim of the present study was to compare cardiovascular biomarkers with the MPA diameter to allow other ways of detecting PH in patients with severe AS.194 patients with severe AS undergoing transcatheter aortic valve replacement (TAVR) were included in this study and were divided into two groups based on the CT-angiographically determined MPA diameter. In accordance with ESC guidelines, a cut-off value of 29 mm was determined in this study, with the absence of PH defined by an MPA diameter29 mm (n = 79/194) and the presence of PH defined by an MPA diameter ≥ 29 mm (115/194). Immediately before interventional aortic valve replacement, blood samples were drawn from the subjects and relevant cardiovascular biomarkers such as BNP, cTnI, GDF-15, H-FABP, IGF-BP2 and suPAR were assessed.Patients with an MPA diameter ≥ 29 mm had significantly higher BNP (p = 0.004), cTnI (p = 0.039) and HFABP (p = 0.015) plasma levels, whereas GDF-15 (p = 0.140), IGF-BP2 ( p = 0.088) and suPAR (p = 0.140) showed no significant differences. In addition, cut-off values were calculated to predict an MPA diameter ≥ 29 mm. Significant results were shown with 1634.00 pg/ml for BNP (p = 0.004), with 16.50 pg/ml for cTnI (p = 0.039) and with 1.16 ng/ml for H-FABP (p = 0.016). In a combined biomarker analysis, the 2-way combination of BNP and IGF-BP2 (AUC 0.671; 95%CI 0.538 - 0.805; p = 0.023) and the 3-way combination of BNP, H-FABP and IGF-BP2 (AUC 0.685; 95%CI 0.551 - 0.818; p = 0.015) showed the best results. Biomarker follow-up at 3 and 12 months after TAVR did not require additional information gain. Regarding 1-year survival, no significant difference could be detected between patients with an MPA diameter29 mm compared to patients with ≥ 29 mm (log-rank test: p = 0.262).The MPA diameter remains a controversial parameter for the detection of PH in patients with severe AS. Standing on its own, this non-invasive parameter may not be precise enough to detect PH accurately. Combining this parameter with several biomarkers did not provide significant additional information.
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- 2022
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28. Endothelialization and Inflammatory Reactions After Intracardiac Device Implantation
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Christoph, Edlinger, Vera, Paar, Salma Haj, Kheder, Florian, Krizanic, Eleni, Lalou, Elke, Boxhammer, Christian, Butter, Victoria, Dworok, Marwin, Bannehr, Uta C, Hoppe, Kristen, Kopp, and Michael, Lichtenauer
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Titanium ,Inflammation ,Treatment Outcome ,Nickel ,Humans ,Foramen Ovale, Patent ,Prostheses and Implants - Abstract
Due to the advances in catheter-based interventional techniques, a wide range of heart diseases can now be treated with a purely interventional approach. Little is yet known regarding biological effects at the intracardiac implantation site or the effects on endothelialization and vascular inflammation in an in vivo environment. Detailed knowledge of ongoing vascular response, the process of endothelialization, and possible systemic inflammatory reactions after implantation is crucial for the clinical routine, since implants usually remain in the body for a lifetime.For this narrative review, we conducted an extensive profound PubMed analysis of the current literature on the endothelialization processes of intracardially implanted devices, such as persistent foramen ovale (PFO) occluders, atrial septal defect (ASD) occluders, left atrial appendage (LAA) occluders, transcatheter aortic valve implantations (TAVIs), and leadless pacemakers. Additionally, the known biological activities of common metallic and synthetic components of intracardiac devices in an "in vivo" setting have been evaluated.Nitinol, an alloy of nickel and titanium, is by far the most commonly used material found in intracardiac devices. Although allergies to both components are known, implantation can be performed safely in the vast majority of patients. Depending on the device used, endothelialization can be expected within a time frame of 3-6 months. For those patients with a known allergy, gold coating may be considered as a viable alternative.Based on our analysis, we conclude that the vast majority of devices are made of a material that is both safe to implant and nontoxic in long-term treatment according to the current knowledge. The literature on the respective duration of endothelialization of individual devices however is highly divergent.
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- 2022
29. Comparison of PCWP and LVEDP Measurements in Patients with Severe Aortic Stenosis Undergoing TAVI-Same Same but Different?
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Elke Boxhammer, Moritz Mirna, Laura Bäz, Brunilda Alushi, Marcus Franz, Daniel Kretzschmar, Uta C. Hoppe, Alexander Lauten, and Michael Lichtenauer
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aortic valve stenosis ,left ventricular end-diastolic pressure ,pulmonary capillary wedge pressure ,right heart catheter ,TAVI ,General Medicine - Abstract
Background: Pulmonary capillary wedge pressure (PCWP) and left ventricular end-diastolic pressure (LVEDP) are often used as equivalents for determination of pulmonary hypertension (PH). PH is a comorbidity in patients with severe aortic valve stenosis (AS) and associated with limited prognosis. The aim of the study was to examine the role of differentiated classification basis of PCWP and LVEDP in patients planning for transcatheter aortic valve implantation (TAVI). Methods: 284 patients with severe AS completed a combined left (LHC) and right heart catheterization (RHC) as part of a TAVI planning procedure. Patients were categorized twice into subtypes of PH according to 2015 European Society of Cardiology (ESC) guidelines—on the one hand with PCWP and on the other hand with LVEDP as classification basis. PCWP-LVEDP relationships were figured out using Kaplan-Meier curves, linear regressions and Bland-Altman analysis. Results: Regarding 1-year mortality, Kaplan-Meier analyses showed similar curves in spite of different classification bases of PH subtypes according to PCWP or LVEDP with exception of pre-capillary PH subtype. PCWP-LVEDP association in the overall cohort was barely present (R = 0.210, R2 = 0.044). When focusing analysis on PH patients only a slightly increased linear regression was noted compared to the overall cohort (R = 0.220, R2 = 0.048). The strongest regression was observed in patients with creatinine ≥ 132 µmol/L (R = 0.357, R2 = 0.127) and in patients with mitral regurgitation ≥ II° (R = 0.326, R2 = 0.106). Conclusions: In patients with severe AS, there is a weak association between hemodynamic parameters measured by LHC and RHC. RHC measurements alone are not suitable for risk stratification with respect to one-year mortality. If analysis of hemodynamic parameters is necessary in patients with severe AS scheduled for TAVI, measurement results of LHC and RHC should be combined and LVEDP could serve as a helpful indicator for risk assessment.
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- 2022
30. Adropin Predicts Chronic Kidney Disease in Type 2 Diabetes Mellitus Patients with Chronic Heart Failure
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Tetiana A. Berezina, Zeljko Obradovic, Elke Boxhammer, Alexander A. Berezin, Michael Lichtenauer, and Alexander E. Berezin
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General Medicine ,type 2 diabetes mellitus ,heart failure ,chronic kidney disease ,adropin ,biomarkers ,prediction - Abstract
Adropin is a multifunctional secreted protein, which is involved in the metabolic modulation of the heart-brain-kidney axis in heart failure (HF). The aim of the study was to detect the plausible predictive value of serum levels of adropin for chronic kidney disease (CKD) grades 1–3 in type 2 diabetes mellitus (T2DM) patients with chronic HF. We enrolled 417 T2DM individuals with chronic HF and subdivided them into two groups depending on the presence of CKD. The control group was composed of 25 healthy individuals and 30 T2DM patients without HF and CKD. All eligible patients underwent an ultrasound examination. Adropin was detected by ELISA in blood samples at the study baseline. We found that adropin levels in T2DM patients without HF and CKD were significantly lower than in healthy volunteers, but they were higher than in T2DM patients with known HF. The optimal cut-off point for adropin levels was 2.3 ng/mL (area under the curve [AUC] = 0.86; 95% CI = 0.78–0.95; sensitivity = 81.3%, specificity = 77.4%). The multivariate logistic regression adjusted for albuminuria/proteinuria showed that serum levels of adropin
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- 2023
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31. Endothelialization and Inflammatory Reactions After Intracardiac Device Implantation
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Christoph Edlinger, Vera Paar, Salma Haj Kheder, Florian Krizanic, Eleni Lalou, Elke Boxhammer, Christian Butter, Victoria Dworok, Marwin Bannehr, Uta C. Hoppe, Kristen Kopp, and Michael Lichtenauer
- Published
- 2022
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32. Rhythmogene Synkopen und überlebter plötzlicher Herztod
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Daniel Steven, Andreas Goette, Alina Razhniova, Christian Wolpert, Elke Boxhammer, David Reek, Markus Patscheke, Luciano Pizzulli, Jonas Wörmann, Jakob Lüker, Bernhard Zrenner, Matthias Hammwöhner, Herribert Pavaci, and Rainer Schimpf
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medicine.medical_specialty ,biology ,business.industry ,Syncope (genus) ,MEDLINE ,biology.organism_classification ,Cardiac surgery ,Physiology (medical) ,Internal medicine ,medicine ,Cardiology ,Cardiology and Cardiovascular Medicine ,business ,Cardiac imaging - Published
- 2019
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33. Anti-oxidative effect of the tyrosine kinase inhibitor nintedanib: a potential therapy for chronic lung allograft dysfunction?
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Marietta von Suesskind-Schwendi, Elke Boxhammer, Karla Lehle, and Christof Schmid
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0301 basic medicine ,Pulmonary and Respiratory Medicine ,Graft Rejection ,Indoles ,medicine.drug_class ,medicine.medical_treatment ,Clinical Biochemistry ,medicine.disease_cause ,Tyrosine-kinase inhibitor ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Cyclosporin a ,medicine ,Lung transplantation ,Animals ,Protein Glutamine gamma Glutamyltransferase 2 ,Molecular Biology ,Protein Kinase Inhibitors ,Lung ,Transglutaminases ,business.industry ,respiratory system ,Allografts ,respiratory tract diseases ,Rats ,Oxidative Stress ,surgical procedures, operative ,030104 developmental biology ,medicine.anatomical_structure ,030228 respiratory system ,chemistry ,Cancer research ,Nintedanib ,Anti oxidative ,business ,Oxidative stress ,Lung Transplantation - Abstract
Background: The long-term survival after lung transplantation (LTx) is often limited by the development of chronic lung allograft dysfunction (CLAD). Increased oxidative stress has been found to oc...
- Published
- 2020
34. The activity of nintedanib in an animal model of allogenic left lung transplantation resembling aspects of allograft rejection
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Christof Schmid, Elke Boxhammer, Karla Lehle, Lutz Wollin, Stephan Hirt, Marietta von Suesskind-Schwendi, and Stephan Schreml
- Subjects
Graft Rejection ,Vascular Endothelial Growth Factor A ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Indoles ,medicine.medical_treatment ,Clinical Biochemistry ,Rats, Inbred WKY ,Gastroenterology ,Organ transplantation ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Internal medicine ,medicine ,Animals ,Lung transplantation ,Lung ,Molecular Biology ,Platelet-Derived Growth Factor ,Bronchus ,biology ,business.industry ,Allografts ,Rats, Inbred F344 ,Rats ,Surgery ,Transplantation ,Vascular endothelial growth factor ,Disease Models, Animal ,medicine.anatomical_structure ,030228 respiratory system ,chemistry ,030220 oncology & carcinogenesis ,biology.protein ,Nintedanib ,business ,Immunosuppressive Agents ,Platelet-derived growth factor receptor ,Lung Transplantation - Abstract
Aim of the Study: The prevention and treatment of chronic lung allograft dysfunction (CLAD) after lung transplantation (LTx) remain unsatisfactory. Growth factors may play an important role in the development of CLAD. This study evaluated the effects of nintedanib, a receptor tyrosine kinase inhibitor, in the treatment of CLAD after experimental LTx. Materials and Methods: A rat model of left lung allo-transplantation (Fisher 344 to Wistar Kyoto) was used to evaluate the effect of nintedanib (50 mg/kg per day) on the development of CLAD. Therapy with nintedanib began 2 days before LTx and ended on postoperative day (POD) 20 (n = 6) or 60 (n = 6). Nontreated animals who underwent LTx (n = 12) were used as controls, whereas naive lungs (n = 24) served as reference for physiological healthy organs without transplantation damage or medical effects. Acute and chronic rejection were evaluated on POD 20 and 60, respectively. Results: Immunohistologic analysis showed a decrease in growth factors/receptors on POD 60 (nintedanib-treated vs. nontreated controls: platelet-derived growth factor (PDGF) A: [P
- Published
- 2017
- Full Text
- View/download PDF
35. [Rhythmogenic syncopes and survived sudden cardiac death]
- Author
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Elke, Boxhammer, Andreas, Goette, Matthias, Hammwöhner, Jakob, Lüker, Markus, Patscheke, Herribert, Pavaci, L, Pizzulli, Alina, Razhniova, David, Reek, Rainer, Schimpf, Daniel, Steven, Jonas, Wörmann, Christian, Wolpert, and Bernhard, Zrenner
- Subjects
Death, Sudden, Cardiac ,Humans ,Syncope - Published
- 2018
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