Is catheter-tissue contact force value important for ablation of ventricular arrhythmias originating from the left ventricular papillary muscles? [PDF]
Frontiers in Cardiovascular Medicine, 2023 BackgroundGood catheter-tissue contact is mandatory to create effective ablation lesions. The minimal contact force value for ablation of arrhythmias originating from the left ventricle is 8.0–10.0 grams but is not known for arrhythmias arising from ...
Jakub Baran +5 more
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Papillary Muscles of the Left Ventricle: Integrating Electrical and Mechanical Dynamics [PDF]
Journal of Cardiovascular Development and DiseaseBackground: Papillary muscles are structures integrated into the mitral valve apparatus, having both electrical and mechanical roles. The importance of the papillary muscles (PM) is mainly related to cardiac arrhythmias and mitral regurgitation.
Csilla Andrea Eötvös +14 more
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Topography of the Papillary Muscles in the Mitral Valve Complex and Their Relevance for Mitral Valve Function [PDF]
Journal of Cardiovascular Development and DiseaseBackground: The mitral valve apparatus is a complex system that requires sufficient function of all involved structures. Previous studies have demonstrated that ventricular remodeling can cause displacement of subannular structures, including the ...
Alina-Jutta Van Laethem +6 more
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The cardiac work-loop technique: An in vitro model for identifying and profiling drug-induced changes in inotropy using rat papillary muscles. [PDF]
Sci Rep, 2020 The cardiac work-loop technique closely mimics the intrinsic in vivo movement and characteristics of cardiac muscle function. In this study, six known inotropes were profiled using the work-loop technique to evaluate the potential of this method to ...
Fletcher S +4 more
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Magnetic resonance imaging of the papillary muscles of the left ventricle: normal anatomy, variants, and abnormalities [PDF]
Insights into Imaging, 2019 Left ventricular papillary muscles are small myocardial structures that play an important role in the functioning of mitral valve and left ventricle. Typically, there are two groups of papillary muscles, namely the anterolateral and the posteromedial ...
Prabhakar Rajiah +2 more
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Bigeminy and the bifid papillary muscle [PDF]
Cardiovascular Ultrasound, 2010 Various structural anomalies of the left ventricular papillary muscles have been observed in recent years. Many of these have been linked to electrocardiographic aberrations.
Ker James
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Papillary muscles of left ventricle—Morphological variations and it’s clinical relevance [PDF]
Indian Heart Journal, 2018 Introduction: The two left ventricular papillary muscles are small structures at sternocostal and inferior wall but are vital to mitral valve competence. Extra papillary muscles could be found.
Anubha Saha, Sanchita Roy
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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 [PDF]
Annals of Noninvasive Electrocardiology, 2022 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
Xiangfei Liu +3 more
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nNOS splice variants differentially regulate myofilament function but are dispensable for intracellular calcium and force transients in cardiac papillary muscles. [PDF]
PLoS ONE, 2018 Cardiac muscle expresses three neuronal nitric oxide synthase (nNOS) splice variants: nNOSα, nNOSμ and nNOSβ. The functions of these nNOS splice variants in cardiac muscle, particularly myofilament-associated nNOSβ are unclear.
W Glenn L Kerrick +2 more
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Catheter ablation of premature ventricular contractions originating from kissing papillary muscles [PDF]
Clinical Case Reports, 2021 Very thick left ventricular papillary muscles (PAMs) may kiss each other and premature ventricular contractions (PVCs) can originate from the sides of the PAMs facing each other.
Takumi Yamada, Krittapoom Akrawinthawong
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