Yoga Yuniadi

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CYP2C9 and VKORC1 are two major genetic factors associated with inter-individual variability in warfarin dose. Additionally, genes in the warfarin metabolism pathway have also been associated with dose variance. We analyzed Single Nucleotide Polymorphisms (SNPs) in these genes to identify genetic factors that might confer warfarin sensitivity in Indonesian(More)
BACKGROUND This study investigated the electrophysiologic characteristics, atrial activation pattern, and effects of radiofrequency (RF) catheter ablation guided by noncontact mapping system in patients with focal atrial tachycardia (AT). METHODS AND RESULTS In 13 patients with 14 focal ATs, noncontact mapping system was used to map and guide ablation of(More)
UNLABELLED Right atrial substrate of supraventricular tachyarrhythmias. BACKGROUND Voltage mapping has been used to detect diseased myocardium. However, accurate determination of the local atrial voltage at the same site, and simultaneous recordings from multiple mapping sites were limited. The purpose of this study was to investigate the right atrial(More)
BACKGROUND Catheter ablation of the right atrial (RA) substrate has had variable efficacy in curing paroxysmal atrial fibrillation (PAF), suggesting that RA substrate ablation can play an important role in the treatment of atrial fibrillation (AF) in some patients. The aim of this study was to investigate the electrophysiological characteristics and(More)
OBJECTIVES The purpose of this study was to investigate the relationship between the abnormal substrate and peak negative voltage (PNV) in the right atrium (RA) with atypical flutter. BACKGROUND The impact of a local abnormally low voltage electrogram on the local activation pattern and velocity of atrial flutter (AFL) remains unclear. METHODS Twelve(More)
OBJECTIVES The aim of the study was to investigate the conduction properties and anisotropy of the crista terminalis (CT) in patients with atrial flutter (AFL) using non-contact mapping. BACKGROUND The CT is a posterior barrier during typical AFL. However, the CT has transverse conduction capabilities in patients with upper loop re-entry (ULR). METHODS(More)
BACKGROUND Data detailing the age-related difference in the atrial substrate for formation of typical atrial flutter (AFL) are sparse. OBJECTIVE The purpose of this study was to characterize the difference in the right atrial substrate related to aging using noncontact mapping of the right atrium. METHODS A total of 54 patients (23 young [<60 years; 45(More)
INTRODUCTION Adenosine can terminate most focal atrial tachycardias (ATs). However, information about the termination mechanism is limited. This study investigated the effects and mechanism of adenosine on terminating focal AT using a three-dimensional noncontact mapping system. METHODS AND RESULTS The study consisted of 7 patients (4 men and 3 women; age(More)
BACKGROUND Successful paediatric cardiac surgery and cardiology treatment has resulted in an increase in the use of surgery as a method of treatment of congenital cardiac disease in adult population. However, late detection and lower socio-economic condition in developing countries might change patients' characteristics by the time they come for treatment.(More)
Paroxysmal atrial fibrillation (PAF) can be initiated by ectopic activation from the crista terminalis. The crista terminalis conduction gap is also a critical isthmus in atrial reentrant arrhythmias like upper and lower loop reentry. The aim of this study was to investigate the mechanism and results of catheter ablation for complex atrial arrhythmias(More)