7,119 results match your criteria: "Ventricular Premature Complexes"
Short RP Interval and Long PR Interval: What Is the Cardiac Rhythm?
JACC Case Rep
November 2024
Division of Cardiology, Tokyo Women's Medical University, Tokyo, Japan.
Marked first-degree atrioventricular block with a PR interval ≥500 ms is rare, leading to unusual P-wave placement. In this case, the P waves immediately after the QRS waves complicated rhythm interpretation. Close attention to P-wave morphology and fused premature ventricular complexes can be important for a proper diagnosis.
View Article and Find Full Text PDFTriple pacing spikes on QRST: What is the mechanism?
J Electrocardiol
December 2024
Department of Cardiology, Electrophysiology division, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala 695011, India. Electronic address:
A septuagenarian man underwent dual chamber pacemaker (DDDR - Boston Scientific Massachusetts, U.S.) insertion for a complete heart block.
View Article and Find Full Text PDFPremature ventricular complexes originating from slow pathway region following AV nodal reentrant tachycardia ablation.
HeartRhythm Case Rep
November 2024
Jefferson Heart Institute, Thomas Jefferson University Hospital, Philadelphia Pennsylvania.
Prevalence of Arrhythmias in Patients With Coronary Microvascular Dysfunction.
Catheter Cardiovasc Interv
December 2024
Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, District of Columbia, USA.
Background: Coronary microvascular dysfunction (CMD) is an important cause of angina with nonobstructive coronary arteries (ANOCA). It is unclear whether CMD is associated with arrhythmia.
Aims: This study aimed to evaluate the prevalence of arrhythmias in patients with ANOCA and CMD compared to those in patients with ANOCA without CMD.
Left Ventricular False Tendons: A Morphological Study by Echocardiography.
Echocardiography
December 2024
Department of Cardiothoracic Surgery, Affiliated Hospital of Putian University, Putian, China.
Purpose: This is a prospective study aimed to investigate the morphology of left ventricular false tendons (LVFTs) using echocardiography and explore its associations with age, sex, body mass index (BMI), congenital heart structural abnormalities, and premature ventricular contractions (PVCs).
Methods And Results: We analyzed data from 889 individuals who underwent consecutive echocardiograms at our ultrasound department between December 2023 and February 2024. Routine echocardiograms were performed to detect congenital structural abnormalities, with a focus on identifying LVFT.
Catheter Ablation of Parahisian Premature Ventricular Complexes From the Right Sinus of Valsalva.
J Cardiovasc Electrophysiol
December 2024
Division of Cardiovascular Medicine, Department of Electrophysiology, University of Michigan, Ann Arbor, Michigan, USA.
Article Synopsis
- Cather ablation of parahisian PVCs often involves targeting the right sinuses of Valsalva (SoV), but there's limited data on its safety and effectiveness.
- * The study examined 11 male patients (average age 68) undergoing PVC ablation in the right SoV, finding that all had intramural LGE-CMR scar involvement, which affected the success rate.
- * Results showed that 91% of the patients had a successful reduction in PVC burden after the procedure, even though traditional indicators of success were not always present at the effective ablation sites.
Left ventricular hypertrophy and ventricular ectopy in mitral valve prolapse.
Int J Cardiol
December 2024
University of North Carolina School of Medicine, Chapel Hill, NC, United States of America; Division of Cardiology, University of North Carolina at Chapel Hill, NC, United States of America. Electronic address:
Article Synopsis
- - The study investigates the relationship between left ventricular hypertrophy (LVH) and ventricular arrhythmias in patients with mitral valve prolapse (MVP), as sudden deaths have been linked to increased ventricular mass.
- - Out of 629 participants, 22.4% exhibited LVH, with those having LVH showing a higher incidence of complex or frequent ventricular ectopy (cfVE) than those without LVH.
- - The findings indicate that LVH is not an independent risk factor for ventricular arrhythmia in MVP; rather, the risk is more closely associated with certain mitral valve features and heart failure conditions.
Ventricular premature beats in a pregnant woman originating from trabeculae carneae in the right ventricle treated with radiofrequency ablation without X-ray guidance: a case report.
J Med Case Rep
November 2024
Department of Cardiology, General Hospital of Ningxia Medical University, Yinchuan, 750004, China.
Article Synopsis
- Premature ventricular beats during pregnancy can lead to serious complications like palpitations, reduced placental blood flow, and risks for the fetus, including miscarriage.
- A case study highlights the successful use of radiofrequency catheter ablation on a pregnant woman with a rare focus of these beats, demonstrating both the challenges and positive outcomes of the procedure.
- The use of fluoroscopy-less ablation is beneficial as it minimizes radiation exposure while ensuring a high success rate and safety for pregnant patients.
Detecting Early Signs of Extrapericardial Cardiac Tamponade With ECG.
Cureus
October 2024
Emergency Medicine, Yuuai Medical Center, Okinawa, JPN.
Article Synopsis
Time to first nadir of the QRS complex in aVR/time to first nadir of the QRS complex in aVL: A novel method for distinguishing left from right outflow tract premature ventricular complexes (PVCs) with precordial transition in V3.
J Electrocardiol
November 2024
Prof. Marmara University School of Medicine, Department of Cardiology, Istanbul, Turkey.
Article Synopsis
- The study aimed to evaluate a specific ECG measurement—the 'time to first nadir of the QRS complex in aVR compared to aVL'—to differentiate between left and right outflow tract premature ventricular complexes (PVCs) in patients.
- Data was collected from 88 patients who underwent ablation for outflow tract PVCs, finding that 57.9% had PVCs originating from the left ventricular outflow tract (LVOT) and 42.1% from the right ventricular outflow tract (RVOT).
- The findings suggest that while this new measurement isn't as precise as existing ECG criteria, it can still assist in determining the origin of PVCs, with certain ratios indicating a higher likelihood of RVOT
Predictors of Myocardial Fibrosis Detected by CMR in Patients With Idiopathic PVCs.
Ann Noninvasive Electrocardiol
November 2024
Department of Cardiology, Institute for Cardiovascular Diseases "Prof. Dr. George I. M. Georgescu", Iași, Romania.
Article Synopsis
- Premature ventricular contractions (PVCs) are common in patients but can indicate underlying heart disease in some cases, particularly in 16% of idiopathic PVC patients.
- This study focused on 94 patients with frequent PVCs, analyzing how the morphology of these contractions relates to myocardial scarring found through cardiac magnetic resonance (CMR) imaging, especially looking at late gadolinium enhancement (LGE) and its implications for treatment.
- Results showed significant associations between LGE prevalence and factors like age, sex, and PVC characteristics, revealing that a high percentage of patients with PVCs had underlying myocardial scarring, with specific patterns in PVC morphology linked to LGE presence.
Catheter Ablation of Ventricular Premature Contractions Originating From RVOT With Interruption of the Inferior Vena Cava-A Case Report.
Ann Noninvasive Electrocardiol
November 2024
Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
Article Synopsis
- - Ventricular premature contractions (VPC) from the right ventricular outflow tract (RVOT) are a common type of heart arrhythmia that can be treated through catheter ablation.
- - Interruption of the inferior vena cava (IVC) is an uncommon vascular condition caused by abnormal development before birth.
- - This report details a unique case of VPC from RVOT accompanied by IVC interruption, which was successfully treated using a transfemoral vein approach for ablation.
A Case Report of Coronary Artery Stenosis Induced by Ablation for Premature Ventricular Complexes.
Cureus
October 2024
Interventional Cardiology, Palm Beach Gardens Medical Center, Palm Beach Gardens, USA.
Article Synopsis
Space Travel: The Radiation and Microgravity Effects on the Cardiovascular System.
Int J Mol Sci
November 2024
Viron Molecular Medicine Institute, Boston, MA 02451, USA.
Article Synopsis
Ablation of premature ventricular complexes originating from papillary muscle using pulsed field energy: the first in USA experience.
Heart Rhythm
November 2024
Division of Cardiovascular Diseases, Mayo Clinic Hospital, Phoenix, Arizona. Electronic address:
Anatomical vs. electrophysiological approach for ablation of premature ventricular contractions originating from the left ventricular summit (ISESHIMA-SUMMIT Study).
Europace
November 2024
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi-kamicho, Itabashi-ku, Tokyo 173-8610, Japan.
Article Synopsis
Visualization of Mechanisms for Myocardium-Originating Premature Ventricular Contractions With Narrow QRS Via His-Purkinje System.
JACC Clin Electrophysiol
October 2024
Division of Cardiology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan.
Left Ventricular Summit Arrhythmias: State-of-the-Art Review of Anatomy, Mapping, and Ablation Strategies.
JACC Clin Electrophysiol
November 2024
Department of Cardiology, Royal Melbourne Hospital, Faculty of Medicine, Dentistry, and Health Science, University of Melbourne, Melbourne, Victoria, Australia; Baker Heart and Diabetes Institute, Melbourne, Australia. Electronic address:
Article Synopsis
- The left ventricular summit (LVS) is a key area where epicardial arrhythmias frequently occur, making it a significant focus for medical professionals.
- Ablating arrhythmias at the LVS is particularly challenging due to its complicated anatomical structure and proximity to other vital heart areas.
- This review provides an in-depth analysis of the LVS anatomy and offers a thorough overview of the techniques used for mapping and ablation of LVS-related arrhythmias.
Is it possible to identify patients at risk of idiopathic ventricular fibrillation?
Heart Rhythm
October 2024
Heart Institute, Hadassah Medical Center, Jerusalem, Israel; School of Medicine, Tel-Aviv University, Tel Aviv, Israel. Electronic address:
Electrocardiographic abnormalities attributable to infiltrative cardiomyopathies: review and prevalence in patients with congestive heart failure.
Clin Res Cardiol
October 2024
Department of Cardiology, Department of Internal Medicine, Albany Medical Center, Albany, NY, 12208, USA.
Article Synopsis
- The study reviewed ECG features in patients with suspected infiltrative cardiomyopathies, heart diseases caused by abnormal substance deposition in the heart muscle, focusing on those with congestive heart failure (CHF).
- Out of 573 CHF patients analyzed, 95% exhibited at least one ECG abnormality linked to infiltrative cardiomyopathies, with an average of 2.2 abnormalities per patient and notable overlap among conditions like Fabry's disease and amyloidosis.
- Results indicated that the presence of left ventricular hypertrophy (LVH) and reduced ejection fraction did not significantly alter the prevalence of ECG abnormalities, although those with decreased ejection fraction exhibited more specific abnormalities like widened QRS and premature ventricular complexes.
Multielectrode catheter-induced ectopy mapping: a novel technique for ablation of infrequent premature ventricular contractions.
Heart Rhythm
October 2024
Université de Rennes, Rennes, France; Saint-Etienne University, Saint-Etienne, France.
Article Synopsis
- The study introduces a new technique called multielectrode catheter-induced ectopy mapping (MECIE mapping) to help locate the origins of infrequent premature ventricular complexes (PVCs) for effective ablation treatment.
- Researchers enrolled 29 patients with infrequent PVCs and used MECIE mapping to create a detailed local activation time map, achieving high concordance with the clinical PVCs.
- After an average follow-up of about 13 months, 93.1% of the patients experienced an 80% or greater reduction in PVCs, indicating that MECIE mapping is a promising strategy for successful PVC ablation.
Source Localization and Classification of Pulmonary Valve-Originated Electrocardiograms Using Volume Conductor Modeling with Anatomical Models.
Biosensors (Basel)
October 2024
Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan.
Article Synopsis
Origin of ventricular fibrillation triggers in a model of localized repolarization heterogeneity.
Heart Rhythm
October 2024
Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, Bordeaux, France.
Article Synopsis
- Heterogeneities in ventricular repolarization play a key role in causing ventricular fibrillation (VF), but the specific triggers and their origins are not well understood.
- The study aimed to investigate how VF is initiated in a model of repolarization heterogeneity and to pinpoint where these triggers arise.
- Using isolated porcine right ventricles, researchers induced VF after creating a repolarization gradient, discovering that triggers consistently originated from the border zone between altered and normal repolarization areas.
Machine Learning for Localization of Premature Ventricular Contraction Origins: A Review.
Pacing Clin Electrophysiol
November 2024
Department of Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai, P.R. China.
Article Synopsis
- Premature ventricular contractions (PVCs) are common heart rhythm issues that start in the ventricles and have garnered attention in electrophysiology for their localization.
- Machine learning (ML) has advanced significantly, particularly in analyzing clinical data from sources like ECGs, CTs, and MRIs, thus enhancing research related to PVC origination.
- This review provides insights on ML's role in identifying PVC origins, outlining its pros and cons, and suggesting future research avenues to help clinicians and researchers effectively apply these techniques.
Combined catheter ablation of atrial fibrillation and premature ventricular complexes.
Heart Rhythm
October 2024
Cardiovascular Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania. Electronic address: