We present three cases of active fixation pacemaker lead implantation, where the leads were believed to be inserted in the right ventricular outflow tract (RVOT) septal position, using established radiological criteria. However, when the exact location of the leads was documented by three-dimensional echocardiography, true septal RVOT position was achieved in only one patient. In the other two patients, the leads were, in fact, implanted into the RVOT anterior free wall. The electrocardiogram criteria were not able to identify the septal position from the anterior RVOT free wall position.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1093/europace/euq371 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Left ventricular-arterial coupling and mortality in the cardiac intensive care unit.
Eur Heart J Acute Cardiovasc Care
March 2025
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
Background: Left ventricular (LV) ventricular-arterial coupling (VAC) refers to the ratio of afterload (effective arterial elastance) to contractility (end-systolic elastance) as an integrated marker of cardiac performance. We sought to determine whether the echocardiographic VAC ratio, defined using the ratio of LV end-systolic volume (LVESV) to stroke volume (SV), predicted mortality in the cardiac intensive care unit (CICU).
Methods: Mayo Clinic CICU patients from 2007 and 2018 were included.
Successful Percutaneous Extraction of a WATCHMAN FLX Device From the Left Ventricular Outflow Tract.
JACC Case Rep
January 2025
Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA. Electronic address:
Background: Although rare, embolization of left atrial appendage occlusion (LAAO) devices carries a significant morbidity and mortality burden.
Case Summary: An asymptomatic 77-year-old woman with inability to tolerate anticoagulation due to gastrointestinal bleeding presented for 45-day transesophageal echocardiography following LAAO with a Watchman device, which demonstrated incidental device migration to the left ventricular outflow tract (LVOT). Percutaneous extraction was performed using a novel technique with rat tooth/alligator forceps to successfully retrieve the Watchman from the LVOT using a transaortic approach.
Phosphodiesterase 10A Inhibitor Modulates Right Ventricular Outflow Tract Electrophysiological Activities and Calcium Homeostasis via the cGMP/PKG Pathway.
J Cell Mol Med
March 2025
Fu Jen Catholic University, School of Medicine, New Taipei City, Taiwan.
Phosphodiesterase inhibitors regulate intracellular Ca of cardiomyocytes through enhancing second messenger signalling. This study aimed to investigate whether TP-10, a selective phosphodiesterase10A inhibitor, modulates Ca cycling, attenuating arrhythmogenesis in the right ventricular outflow tract (RVOT). Right ventricular tissues from New Zealand white rabbits were harvested, and electromechanical analyses of ventricular tissues were conducted.
View Article and Find Full Text PDFComplementary classification of hypertrophic cardiomyopathy using unsupervised cluster analysis on left ventricular function.
Sci Rep
March 2025
Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Heping District, Shenyang, 110001, China.
Contemporary classification of hypertrophic cardiomyopathy (HCM) was mainly based on the site of myocardial hypertrophy and left ventricular outflow tract obstruction. A complementary classification based on left ventricular function could provide a powerful tool to identify individuals with high risk of adverse cardiovascular outcomes and guide individualized managements. Multi-dimensional echocardiographic parameters of left ventricular function derived from conventional echocardiography, tissue Doppler imaging, and speckle tracking echocardiography were obtained in 266 HCM patients and 169 healthy controls (HCs).
View Article and Find Full Text PDFHigh-Power Short-Duration Temperature-Controlled Radiofrequency Ablation for the Treatment of Outflow Tract Ventricular Arrhythmias.
J Cardiovasc Electrophysiol
March 2025
2nd Department of Cardiology, Medical School, National and Kapodistrian University of Athens, University General Hospital ATTIKON, Athens, Greece.
Introduction: The tissue temperature-controlled DiamondTemp ablation (DTA) catheter has been mainly used for atrial fibrillation ablation. We report our initial experience in using this catheter for the treatment of outflow premature ventricular contractions (PVCs) or repetitive non-sustained monomorphic ventricular tachycardias (VTs).
Methods: Twenty patients were studied: 10 with right ventricular outflow tract PVCs/VTs, eight with PVCs/VTs from the aortic sinus cusps, and two with left ventricular outflow tract PVCs.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!