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Following a non-ST-elevation myocardial infarction (MI), a 68-year-old hypertensive, severely obese woman with 45% left ventricular ejection fraction underwent an implantable cardiac monitor (ICM) insertion. After 8 months, the ICM remotely transmitted multiple non-sustained ventricular tachycardia episodes. Symptomatic during these events, the patient underwent an invasive electrophysiologic stimulation, which induced ventricular arrhythmia. Subsequently, implantable cardioverter-defibrillator implantation was recommended. Continuous remote monitoring via an ICM detected critical arrhythmias in this post-MI patient, facilitating timely intervention.
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http://dx.doi.org/10.19102/icrm.2024.15094 | DOI Listing |
J Interv Card Electrophysiol
September 2025
Federal University of Minas Gerais, R. Alfredo Balena, 190, Santa Efigênia, Belo Horizonte, Brazil.
Background: Chagas heart disease (ChD) is a significant public health concern in Latin America, contributing to a high incidence of sudden cardiac death (SCD). Despite advances in heart failure treatment, management of Chagas cardiomyopathy has not progressed accordingly. While ICDs are effective for primary and secondary prevention in other conditions, patients with ChD often experience more frequent episodes of ventricular tachycardia, and ICD use may provide a negative impact and increase mortality.
View Article and Find Full Text PDFJACC Case Rep
September 2025
Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
Background: Cardiac sarcoidosis (CS) usually affects the left ventricle and presents with nonspecific features like conduction abnormalities and ventricular arrhythmias. However, right ventricle (RV)-dominant involvement has been increasingly reported, making diagnosis difficult.
Case Summary: A 55-year-old man presented with palpitations.
JACC Case Rep
September 2025
Division of Academic Affairs and Research, Orlando Regional Medical Center, Orlando, Florida, USA. Electronic address:
Background: Tachycardia-induced cardiomyopathy (TICM) is typically reversible with rhythm control, but individual susceptibility remains poorly understood and may reflect genetic predisposition.
Case Summary: A 66-year-old woman with paroxysmal atrial fibrillation (AF) presented with new-onset heart failure. Genetic testing identified a likely pathogenic heterozygous ABCC9 gene variant (c.
Cureus
August 2025
Department of Internal Medicine, Jersey City Medical Center, Jersey City, USA.
An electrical storm (ES) represents one of cardiology's most formidable and life-threatening crises, marked by relentless ventricular arrhythmias within a 24-hour period. While stimulant cardiotoxicity is an escalating concern, the devastating role of methamphetamine in triggering refractory ES and its deleterious outcomes in advanced cardiomyopathy, particularly within the critical care setting, remains profoundly underreported and poorly understood. We present the urgent case of a 44-year-old male with end-stage dilated cardiomyopathy and chronic, heavy methamphetamine abuse, who spiraled into incessant ventricular tachycardia (VT) storm following acute methamphetamine use.
View Article and Find Full Text PDFInt J Cardiol
September 2025
Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China. Electronic address:
Background And Aims: Previous cardiac implantable electronic devices (CIEDs) automatically monitored, diagnosed, and stored atrial or ventricular tachyarrhythmias as intracardiac electrograms (EGMs). Abbott's new-generation CIEDs offer pre-event EGM storage (Pre-EGM), recording cardiac electrical activity before arrhythmic events. This study determines whether Pre-EGM provides additional diagnostic information for arrhythmic events.
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