Background: Risk stratification for transcatheter procedures in patients with severe mitral regurgitation is challenging. Deceleration capacity (DC) has already proven to be a reliable risk predictor in patients undergoing transcatheter aortic valve implantation. We hypothesized, that DC provides prognostic value in patients undergoing transcatheter edge-to-edge mitral valve repair (TEER).
View Article and Find Full Text PDFBackground: Acute respiratory distress syndrome (ARDS) is considered the main cause of COVID-19 associated morbidity and mortality. Early and reliable risk stratification is of crucial clinical importance in order to identify persons at risk for developing a severe course of disease. Deceleration capacity (DC) of heart rate as a marker of cardiac autonomic function predicts outcome in persons with myocardial infarction and heart failure.
View Article and Find Full Text PDFSilent brain infarcts (SBI) are frequently detected in patients with atrial fibrillation (AF), but it is unknown whether SBI are linked to autonomic dysfunction. We aimed to explore the association of autonomic dysfunction with SBI in AF patients. 1,358 AF patients without prior stroke or TIA underwent brain MRI and 5-min resting ECG.
View Article and Find Full Text PDFDeceleration capacitiy for rapid risk stratification in stroke patientsCerebral ischemia is a major cause of neurologic deficit and patients suffering from ischemic stroke bear a relevant risk of mortality. Identifying stroke patients at high mortality risk is of crucial clinical relevance. Deceleration capacity of heart rate (DC) as a parameter of cardiac autonomic function is an excellent predictor of mortality in myocardial infarction and heart failure patients.
View Article and Find Full Text PDFBackground Impaired heart rate variability (HRV) is associated with increased mortality in sinus rhythm. However, HRV has not been systematically assessed in patients with atrial fibrillation (AF). We hypothesized that parameters of HRV may be predictive of cardiovascular death in patients with AF.
View Article and Find Full Text PDFBackground: Patients with acute coronary syndrome (ACS) are at risk especially in the period shortly after the event. Alterations in respiratory control have been associated with adverse prognosis. The aim of our study was to assess if the nocturnal respiratory rate (NRR) is a predictor of mortality in patients with ACS presenting in the emergency department.
View Article and Find Full Text PDFspecies are Gram-positive, facultative anaerobic, rod-shaped bacteria. They belong to the lactic acid bacteria group and are also known as a usual part of the normal flora of the gastrointestinal tract as well as of the urinary and genital tracts. They are an infrequent human pathogen but can induce several infections such as bacteremia and infectious endocarditis.
View Article and Find Full Text PDFBackground: Community-acquired pneumonia (CAP) causes appreciable morbidity and mortality in adults, especially in those ≥65 years of age. At hospital admission, an immediate and reliable risk assessment is necessary to detect patients with possible fatal outcome.
Objective: We aimed to evaluate markers of the autonomic nervous system based on an electrocardiogram to predict mortality in patients with CAP.
Background: Plasma Galectin-3 is a marker of myocardial inflammation and fibrosis, was associated with left ventricular (LV) reverse remodeling after conventional surgical mitral valve repair (MVR) and predicted clinical events in patients undergoing transcatheter aortic valve replacement (TAVR). We aimed to evaluate the association between pre-interventional Galectin-3 levels and (1) reverse LV remodeling and (2) major adverse cardiovascular events (MACE) in patients undergoing percutaneous MVR.
Methods: Forty-four consecutive patients (median age 79 years, LV ejection fraction 39.
Syncope is a common cause for admission to the emergency department (ED). Due to limited clinical resources there is great interest in developing risk stratification tools that allow identifying patients with syncope who are at low risk and can be safely discharged. Deceleration capacity (DC) is a strong risk predictor in postinfarction and heart failure patients.
View Article and Find Full Text PDFAims: Twenty-four-hour deceleration capacity (DC24h) of heart rate is a strong predictor of mortality after myocardial infarction (MI). Assessment of DC from short-term recordings (DCst) would be of practical use in everyday clinical practice but its predictive value is unknown. Here, we test the usefulness of DCst for autonomic bedside risk stratification after MI.
View Article and Find Full Text PDFAims: Therapy with an implantable cardioverter defibrillator (ICD) is established for the prevention of sudden cardiac death (SCD) in high risk patients. We aimed to determine the effectiveness of primary prevention ICD therapy by analysing registry data from 14 centres in 11 European countries compiled between 2002 and 2014, with emphasis on outcomes in women who have been underrepresented in all trials.
Methods And Results: Retrospective data of 14 local registries of primary prevention ICD implantations between 2002 and 2014 were compiled in a central database.
Background: Catheter ablation (CA) of atrial fibrillation (AF) requires an intensified peri-inter-ventional anticoagulation scheme to avoid thromboembolic complications. In patients with cardiac or extracardiac artery disease, an additional antiplatelet treatment (AAT) is at least temporally necessary especially after a percutaneous intervention with stent implantation. This raises the question whether these patients have a higher peri-interventional bleeding risk during CA of AF.
View Article and Find Full Text PDFBackground: Risk prediction in patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve implantation (TAVI) is challenging. Development of novel markers for patient risk assessment is of great clinical value. Deceleration capacity (DC) of heart rate is a strong risk predictor in post-infarction patients.
View Article and Find Full Text PDFRecurrent laryngeal palsies are relatively common. Frequently, surgical procedures precede paresis. In rare cases a compression of the recurrent laryngeal nerve can be caused by enlarged cardiovascular structures.
View Article and Find Full Text PDFBackground: Factors causing resistance to renal denervation (RDN) for treatment of arterial hypertension are not known. In the current study, we sought to determine mechanisms involved in responsiveness to renal denervation therapy in patients with difficult-to-control and resistant hypertension.
Methods And Results: We evaluated the differential CpG methylation of genes in blood samples isolated from patients of a recently described cohort of responders or non-responders to renal denervation using microarray technique and measured protein levels of identified downstream effectors in blood samples of these patients by ELISA.
Objectives: To evaluate heart rate deceleration capacity, an electrocardiogram-based marker of autonomic nervous system activity, as risk predictor in a medical emergency department and to test its incremental predictive value to the modified early warning score.
Design: Prospective cohort study.
Setting: Medical emergency department of a large university hospital.
Background: Identification of new risk markers in aortic valve stenosis (AS) is of great interest. Here, we hypothesized that the presence of severe autonomic failure (SAF) is an important prognostic marker in both, symptomatic patients undergoing invasive treatment for severe AS, and in asymptomatic patients with severe AS who were primarily treated conservatively.
Methods: We prospectively enrolled 300 patients with severe AS (aortic valve area<1.
Background: Enhanced sympathetic activity at the ventricular myocardium can destabilize repolarization, increasing the risk of death. Sympathetic activity is known to cluster in low-frequency bursts; therefore, we hypothesized that sympathetic activity induces periodic low-frequency changes of repolarization. We developed a technique to assess the sympathetic effect on repolarization and identified periodic components in the low-frequency spectral range (≤0.
View Article and Find Full Text PDFObjective: The aim of this study was to find a new and less cardiotoxic conditioning regimen for high-dose chemotherapy and autologous stem cell transplantation (aSCT) in patients with severe SSc and pre-existing cardiac involvement.
Methods: Six patients with cardiac involvement were treated for SSc with a conditioning regimen including reduced-dose CYC plus the non-cardiotoxic alkylant thiotepa. All patients received an implantable cardioverter defibrillator (ICD) before aSCT.
Background: Assessment of heart rate variability by means of deceleration capacity (DC) provides a noninvasive probe of cardiac autonomic activity. However, clinical use of DC is limited by the need of manual review of the ECG signals to eliminate artifacts, noise, and nonstationarities.
Objective: To validate a novel approach to fully automatically assess DC from noisy, nonstationary signals
Methods: We analyzed 100 randomly selected ECG tracings recorded for 10 minutes by routine monitor devices (GE DASH 4000, sample size 100 Hz) in a medical emergency department.
Objectives: This study sought to evaluate cardiac baroreflex sensitivity (BRS) as a predictor of response to renal sympathetic denervation (RDN).
Background: Catheter-based RDN is a novel treatment option for patients with resistant arterial hypertension. It is assumed that RDN reduces efferent renal and central sympathetic activity.
Background: Presence of severe autonomic failure (SAF), defined as coincidence of abnormal heart rate turbulence and abnormal deceleration capacity, identifies a group of patients with very poor prognosis among post-infarction patients with diabetes mellitus. However, factors contributing to development of SAF are entirely unknown. Here, we aimed to identify clinical, biochemical, and hemodynamic factors predicting SAF in a consecutive cohort of diabetic patients with coronary artery disease (CAD).
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