6,572 results match your criteria Ventricular Premature Complexes

The effects of catheter ablation of outflow tract premature ventricular complexes on atrial electromechanical delay.

Echocardiography 2022 May 16. Epub 2022 May 16.

Department of Cardiology, Bursa Yuksek İhtisas Training and Research Hospital, Health Sciences University, Bursa, Turkey.

Background: Consistent data from several studies have shown that catheter ablation of frequent premature ventricular complexes (PVCs) results in substantial improvement in left ventricular ejection fraction (LVEF), left ventricular diastolic function, and left atrial volume and mechanics. However, the effects of catheter ablation of PVCs on atrial electromechanical properties have not been documented yet.

Aims: In the present study, we investigated the short-term effects of radiofrequency catheter ablation (RFCA) of outflow tract PVCs on atrial electromechanical delay (EMD). Read More

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The Terminal End of Retro-aortic root branch ------An unrecognized Origin for " Proximal Left Anterior Fascicle" Premature Ventricular Complexes with narrow QRS duration.

Heart Rhythm 2022 May 11. Epub 2022 May 11.

Department of Cardiology, Wuhan Asian Heart Hospital, Wuhan, China.

Background: Premature ventricular complexes (PVCs) with narrow QRS duration, inferior frontal plane QRS axis and right bundle branch block(RBBB) pattern generally originate from the proximal segment of the left anterior fascicle(LAF).

Objective: This study aimed to investigate the exact origin of this category of PVCs.

Methods: 22 patients with assumed proximal LAF-PVCs were enrolled in the present study. Read More

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Long-term study on electrophysiological characteristics and catheter ablation of idiopathic ventricular arrhythmias originating from the left ventricular posterior papillary muscles guided by intracardiac ultrasound.

Ann Noninvasive Electrocardiol 2022 May 14:e12962. Epub 2022 May 14.

Department of Cardiology, Central Hospital of Shengli Oil Field, Dongying, China.

Background: This study aimed to investigate the electrophysiological characteristics of idiopathic ventricular arrhythmias (VAs) originating from the left ventricular posterior papillary muscles (LPPM) and explore the efficiency of catheter ablation using three-dimensional intracardiac ultrasound technology.

Methods: Twenty-seven cases of premature ventricular contraction/ventricular tachycardia (PVC/VT) originating from the left ventricular posterior papillary muscles were recorded from July 2015 to June 2019 in the Central Hospital of Shengli Oil Field and the First Affiliated Hospital of Zhengzhou University. Electrophysiological mapping and radiofrequency catheter ablation (RFCA) were performed using three-dimensional intracardiac ultrasound technology. Read More

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Performance and Robustness Testing of a Non-Invasive Mapping System for Ventricular Arrhythmias.

Front Physiol 2022 26;13:870435. Epub 2022 Apr 26.

Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.

The clinical value of non-invasive mapping system depends on its accuracy under common variations of the inputs. The View Into Ventricular Onset (VIVO) system matches simulated QRS complexes of a patient-specific anatomical model with a 12-lead ECG to estimate the origin of ventricular arrhythmias. We aim to test the performance of the VIVO system and its sensitivity to changes in the anatomical model, time marker placement to demarcate the QRS complex and body position. Read More

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Selection of an impedance- or magnetic field-based electro-anatomical mapping platform does not affect outcomes of outflow tract premature ventricular complex manual ablation.

Heart Vessels 2022 May 12. Epub 2022 May 12.

Semmelweis University Heart and Vascular Centre, Városmajor u. 68, Budapest, 1122, Hungary.

Comparative data are virtually missing about the performance of different electro-anatomical mapping (EAM) system platforms on outflow tract (OT) premature ventricular complex (PVC) ablation outcomes with manual ablation catheters. We aimed to compare the acute success-, complication-, and long-term recurrence rates of impedance-based (IMP) and magnetic field-based (MAG) EAM platforms in manual OT PVC ablation. Single-centre, propensity score matched data of 39-39 patients ablated for OT PVCs in 2015-17 with IMP or MAG platforms were analysed. Read More

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Guidewire ablation of epicardial ventricular arrhythmia within the coronary venous system: A case report.

HeartRhythm Case Rep 2022 Mar 30;8(3):195-199. Epub 2021 Dec 30.

Department of Cardiology, General Hospital of Northern Theater Command, Shenyang, China.

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Acupuncture at Neiguan suppresses PVCs occurring post-myocardial infarction by alleviating inflammation and fibrosis.

Chin Med 2022 Apr 28;17(1):52. Epub 2022 Apr 28.

Regenerative Medicine Research Center, West China Hospital, Sichuan University, Keyuan Road 4, Gaopeng Street, Chengdu, 610041, Sichuan, China.

Background: Acupuncture at Neiguan (PC6) has long been used for treating cardiovascular diseases, but its antiarrhythmic effect and the underlying mechanisms have not yet been well investigated, especially regarding premature ventricular complexes (PVCs) that occur post-myocardial infarction (MI). The purpose of this study was to study the antiarrhythmic effect of manual acupuncture applied to PC6 for a relatively long period (28 days) and to elucidate the mechanism in mice.

Methods: An MI mouse model was generated by ligating the left anterior descending coronary artery in male C57/BL6 mice (n = 31). Read More

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Intramural Needle Ablation for Refractory Premature Ventricular Contractions.

Circ Arrhythm Electrophysiol 2022 May 27;15(5):e010020. Epub 2022 Apr 27.

Helmsley Electrophysiology Center, Department of Cardiology, Icahn School of Medicine at Mount Sinai, NY (S.R.D., C.O., T.S., W.W., J.S.K., S.C., V.Y.R.).

Background: Frequent premature ventricular contractions (PVCs) are often amenable to catheter ablation. However, a deep intramural focus may lead to failure due to inability of standard ablation techniques to penetrate the focus. We sought to assess the efficacy and safety of infusion needle ablation (INA) for PVCs that are refractory to standard radiofrequency ablation. Read More

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It Takes Perseverance to Reach the Summit.

JACC Clin Electrophysiol 2022 Apr;8(4):477-479

Cardiac Electrophysiology Section, Vanderbilt University Medical Center, Nashville, Tennessee, USA.

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An Effective and Lightweight Deep Electrocardiography Arrhythmia Recognition Model Using Novel Special and Native Structural Regularization Techniques on Cardiac Signal.

J Healthc Eng 2022 12;2022:3408501. Epub 2022 Apr 12.

Biomedical Imaging and Electrophysiology Laboratory, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.

Recently, cardiac arrhythmia recognition from electrocardiography (ECG) with deep learning approaches is becoming popular in clinical diagnosis systems due to its good prognosis findings, where expert data preprocessing and feature engineering are not usually required. But a lightweight and effective deep model is highly demanded to face the challenges of deploying the model in real-life applications and diagnosis accurately. In this work, two effective and lightweight deep learning models named Deep-SR and Deep-NSR are proposed to recognize ECG beats, which are based on two-dimensional convolution neural networks (2D CNNs) while using different structural regularizations. Read More

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Robust PVC Identification by Fusing Expert System and Deep Learning.

Biosensors (Basel) 2022 Mar 22;12(4). Epub 2022 Mar 22.

School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China.

Premature ventricular contraction (PVC) is one of the common ventricular arrhythmias, which may cause stroke or sudden cardiac death. Automatic long-term electrocardiogram (ECG) analysis algorithms could provide diagnosis suggestion and even early warning for physicians. However, they are mutually exclusive in terms of robustness, generalization and low complexity. Read More

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Reply to "Pro-arrhythmia with antiarrhythmic drugs in patients with idiopathic ventricular arrhythmia: A common problem with vague definitions and complex interactions".

J Cardiovasc Electrophysiol 2022 Apr 20. Epub 2022 Apr 20.

Division of Cardiology, Heart Rhythm Services, University of British Columbia, Vancouver, Canada.

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A Prospective Study of Risk of Arrythmias in Patients with Myocardial Infarction in a Tertiary Care Center.

Mithun R Rekha Mc

J Assoc Physicians India 2022 Apr;70(4):11-12

Mandya Institute of Medical Sciences, Mandya.

Acute Coronary Syndrome (ACS) is an emerging epidemic in India. Conduction blocks occur in about 15-20% of patients with acute MI, studies have shown that arrhythmias are important predictors of poor outcome in patients with ACS and are associated with higher in hospital mortality.In this study an attempt is made to know the association of arrhythmias in patients of acute MI. Read More

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A new prediction model for ventricular arrhythmias in arrhythmogenic right ventricular cardiomyopathy.

Eur Heart J 2022 Apr 20. Epub 2022 Apr 20.

Department of Genetics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, Groningen, The Netherlands.

Aims: Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVC) is characterized by ventricular arrhythmias (VAs) and sudden cardiac death (SCD). We aimed to develop a model for individualized prediction of incident VA/SCD in ARVC patients.

Methods And Results: Five hundred and twenty-eight patients with a definite diagnosis and no history of sustained VAs/SCD at baseline, aged 38. Read More

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Ventricular premature complexes successfully ablated from the non-coronary cusp: a case report.

Eur Heart J Case Rep 2022 Apr 22;6(4):ytac129. Epub 2022 Mar 22.

Division of Cardiology, Cardiovascular and Aortic Center, Saiseikai Fukuoka General Hospital, 1-3-46 Tenjin Chuo-ku, Fukuoka 810-0001, Japan.

Background: Ventricular premature complexes (VPCs) occasionally originate from the aortic sinus of Valsalva. Because the anterior part of the left coronary cusp (LCC) and right coronary cusp (RCC) are connected through the ventricular musculature at their bases, VPCs are more common in the LCC and the RCC than in the non-coronary cusp (NCC). We herein report a case in which VPCs were successfully ablated from the NCC, which is considered rare. Read More

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Classification of patients with embolic stroke of undetermined source into cardioembolic and non-cardioembolic profile subgroups.

Eur J Neurol 2022 Apr 14. Epub 2022 Apr 14.

Department of Neurology, University Hospital RWTH Aachen, Aachen, Germany.

Background And Purpose: It is currently thought that embolic stroke of undetermined source (ESUS) has diverse underlying hidden etiologies, of which cardioembolism is one of the most important. The subgroup of patients with this etiology could theoretically benefit from oral anticoagulation, but it remains unclear if these patients can be correctly identified from other ESUS subgroups and which markers should be used. We aimed to determine whether a machine-learning (ML) model could discriminate between ESUS patients with cardioembolic and those with non-cardioembolic profiles using baseline demographic and laboratory variables. Read More

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Premature Ventricular Contraction Recognition Based on a Deep Learning Approach.

J Healthc Eng 2022 26;2022:1450723. Epub 2022 Mar 26.

Department of Electrical and Computer Engineering, Islamic Azad University Tehran North Branch, Tehran, Iran.

Electrocardiogram signal (ECG) is considered a significant biological signal employed to diagnose heart diseases. An ECG signal allows the demonstration of the cyclical contraction and relaxation of human heart muscles. This signal is a primary and noninvasive tool employed to recognize the actual life threat related to the heart. Read More

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Intracardiac Echocardiography to Guide the Ablation of Parahisian Arrhythmias.

Card Electrophysiol Clin 2021 Jun 18;13(2S):e1-e16. Epub 2022 Mar 18.

Department of Cardiology, Westmead Hospital, Sydney, Australia; Westmead Applied Research Centre, University of Sydney, New South Wales, Australia. Electronic address:

Arrhythmias from the perinodal region have been described for accessory pathways (APs), atrial tachycardias (AT), premature ventricular complexes (PVCs), and ventricular tachycardia (VT). The parahisian (PH) region encompasses anatomic structures that include the atrioventricular (AV) node and His-Bundle (HB). These locations are at high-risk for inducing AV block during catheter ablation in the electrophysiology laboratory. Read More

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R-on-T and the initiation of reentry revisited: Integrating old and new concepts.

Heart Rhythm 2022 Mar 30. Epub 2022 Mar 30.

Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California; Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, California.

Initiation of reentry requires 2 factors: (1) a triggering event, most commonly focal excitations such as premature ventricular complexes (PVCs); and (2) a vulnerable substrate with regional dispersion of refractoriness and/or excitability, such as occurs during the T wave of the electrocardiogram when some areas of the ventricle have repolarized and recovered excitability but others have not. When the R wave of a PVC coincides in time with the T wave of the previous beat, this timing can lead to unidirectional block and initiation of reentry, known as the R-on-T phenomenon. Classically, the PVC triggering reentry has been viewed as arising focally from 1 region and propagating into another region whose recovery is delayed, resulting in unidirectional conduction block and reentry initiation. Read More

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Electrocardiographic Findings, Arrhythmias, and Left Ventricular Involvement in Familial ST-Depression Syndrome.

Circ Arrhythm Electrophysiol 2022 Apr 31;15(4):e010688. Epub 2022 Mar 31.

The Unit for Inherited Cardiac Diseases, Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark & Department of Clinical Medicine (A.H.C., C.R.V., J.T.-H., S.P., H.B.), The Heart Centre, Rigshospitalet, University of Copenhagen.

Background: Familial ST-depression syndrome is an inherited disease characterized by persistent, nonischemic ST-deviations, and risk of arrhythmias and heart failure. We aimed at further characterizing the ECG, arrhythmias, and structural characteristics associated with this novel syndrome.

Methods: Retrospective analysis of data from consecutive families with familial ST-depression Syndrome in Denmark. Read More

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Impact of recording length and other arrhythmias on atrial fibrillation detection from wrist photoplethysmogram using smartwatches.

Sci Rep 2022 03 30;12(1):5364. Epub 2022 Mar 30.

Department of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.

This study aimed to evaluate whether quantitative analysis of wrist photoplethysmography (PPG) could detect atrial fibrillation (AF). Continuous electrocardiograms recorded using an electrophysiology recording system and PPG obtained using a wrist-worn smartwatch were simultaneously collected from patients undergoing catheter ablation or electrical cardioversion. PPG features were extracted from 10, 25, 40, and 80 heartbeats of the split segments. Read More

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Impact of sex on clinical, procedural characteristics and outcomes of catheter ablation for ventricular arrhythmias according to underlying heart disease.

J Interv Card Electrophysiol 2022 Mar 30. Epub 2022 Mar 30.

Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, Darcy Road, Westmead, NSW, Australia.

Background: Women are under-represented in many key studies and trials examining outcomes of catheter ablation (CA) for ventricular arrhythmias (VA). We compared characteristics between men and women undergoing their first catheter ablation for VA at a single centre over 10 years.

Methods: The clinical, procedural characteristics and outcomes of 287 consecutive patients (male = 182, female = 105), undergoing their first CA at our centre over 10 years were compared according to sex and underlying heart disease. Read More

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Modern mapping and ablation of idiopathic outflow tract ventricular arrhythmias.

Rev Cardiovasc Med 2022 Mar;23(3):103

Arrhythmia Unit, Onassis Cardiac Surgery Center, 17674 Athens, Greece.

Outflow tract (OT) premature ventricular complexes (PVCs) are being recognized as a common and often troubling, clinical electrocardiographic finding. The OT areas consist of the Right Ventricular Outflow Tract (RVOT), the Left Ventricular Outflow Tract (LVOT), the Aortomitral Continuity (AMC), the aortic cusps and the Left Ventricular (LV) summit. By definition, all OT PVCs will exhibit an inferior QRS axis, defined as positive net forces in leads II, III and aVF. Read More

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Clinical Characteristics and Follow-Up of Pediatric-Onset Arrhythmogenic Right Ventricular Cardiomyopathy.

JACC Clin Electrophysiol 2022 03 22;8(3):306-318. Epub 2021 Dec 22.

Department of Cardiology, University Medical Center Utrecht, Utrecht, the Netherlands; Netherlands Heart Institute, Utrecht, the Netherlands. Electronic address:

Objectives: The goal of this study was to describe characteristics, cascade screening results, and predictors of adverse outcome in pediatric-onset arrhythmogenic right ventricular cardiomyopathy (ARVC).

Background: Although ARVC is increasingly recognized in children, pediatric ARVC cohorts remain underrepresented in the literature.

Methods: This study included 12 probands with pediatric-onset ARVC (aged <18 years at diagnosis) and 68 pediatric relatives (aged <18 years at first evaluation) referred for cascade screening. Read More

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Optogenetic Control of Engrafted Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes in Live Mice: A Proof-of-Concept Study.

Cells 2022 03 10;11(6). Epub 2022 Mar 10.

Department of Cardiovascular Diseases, Mayo Clinic Arizona, Scottsdale, AZ 85259, USA.

Background: Cellular transplantation has emerged as promising approach for treating cardiac diseases. However, a poor engraftment rate limits our understanding on how transplanted cardiomyocytes contribute to cardiac function in the recipient's heart.

Methods: The CRISPR/Cas9 technique was employed for stable and constitutive gene expression in human-induced pluripotent stem-cell-derived cardiomyocytes (hiPSC-CMs). Read More

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Multiclass Arrhythmia Detection and Classification From Photoplethysmography Signals Using a Deep Convolutional Neural Network.

J Am Heart Assoc 2022 Apr 24;11(7):e023555. Epub 2022 Mar 24.

Key Laboratory for Health Informatics Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Shenzhen China.

Background Studies have reported the use of photoplethysmography signals to detect atrial fibrillation; however, the use of photoplethysmography signals in classifying multiclass arrhythmias has rarely been reported. Our study investigated the feasibility of using photoplethysmography signals and a deep convolutional neural network to classify multiclass arrhythmia types. Methods and Results ECG and photoplethysmography signals were collected simultaneously from a group of patients who underwent radiofrequency ablation for arrhythmias. Read More

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Antiarrhythmic effect of 9-week hybrid comprehensive telerehabilitation and its influence on cardiovascular mortality in long-term follow-up - subanalysis of the TELEREHabilitation in Heart Failure Patients randomized clinical trial.

Arch Med Sci 2022 22;18(2):293-306. Epub 2021 May 22.

Telecardiology Center, National Institute of Cardiology, Warsaw, Poland.

Introduction: Cardiac rehabilitation is a component of heart failure (HF) management, but its effect on ventricular arrhythmias is not well understood. We analyzed the antiarrhythmic effect of a 9-week hybrid comprehensive telerehabilitation (HCTR) program and its influence on long-term cardiovascular mortality in HF patients taken from the TELEREHabilitation in Heart Failure Patients (TELEREH-HF) trial.

Material And Methods: We evaluated the presence of non-sustained ventricular tachycardia (nsVT) and frequent premature ventricular complexes ≥ 10 beats/hour (PVCs ≥ 10) in 24-hour ECG monitoring at baseline and after 9-week HCTR or usual care (UC) of 773 HF patients (NYHA I-III, LVEF ≤ 40%). Read More

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