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Usefulness of an Implantable Loop Recorder in Diagnosing Unexplained Syncope and Predictors for Pacemaker Implantation

Lee SH, Kim TH, Oh YS, Oh S, Choi JI, Kim JB, Nah JC, Im SI, Kang KW, Han S, Kim JS

BACKGROUND: An implantable loop recorder (ILR) is an effective tool for diagnosing unexplained syncope (US). We examined the diagnostic utility of an ILR in detecting arrhythmic causes of US and...
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Efficacy of Cardiac Resynchronization Therapy Using Automated Dynamic Optimization and Left Ventricular-only Pacing

Gwag HB, Park Y, Lee SS, Kim JS, Park KM, On YK, Park SJ

BACKGROUND: Although device-based optimization has been developed to overcome the limitations of conventional optimization methods in cardiac resynchronization therapy (CRT), few real-world data supports the results of clinical trials that...
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Prognostic Implication of Ventricular Conduction Disturbance Pattern in Hospitalized Patients with Acute Heart Failure Syndrome

Lee JH, Park JJ, Cho Y, Oh IY, Yoo BS, Kim JJ, Kim KH, Kang SM, Baek SH, Jeon ES, Cho MC, Chae SC, Oh BH, Choi DJ

BACKGROUND AND OBJECTIVES: Conflicting data exist regarding the prognostic implication of ventricular conduction disturbance pattern in patients with heart failure (HF). This study investigated the prognostic impact of ventricular conduction...
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Persistent Complete Atrioventricular Block after Induction of General Anesthesia in a Healthy Patient

Byeon GJ, Kim HJ, Ri HS, Lee SS, Kim HY

A 38-year-old female patient had bradycardia in the preoperative electrocardiogram (ECG), and she showed severe bradycardia, with the heart rate (HR) under 40 beats per minute (bpm) even after arrival...
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Association of Newly Developed Right Bundle Branch Block with Graft Rejection Following Heart Transplantation

Kim JH, Oh J, Kim MJ, Kim IC, Uhm JS, Pak HN, Kang SM

PURPOSE: We aimed to examine associations between right bundle branch block (RBBB) following heart transplantation (HT) and graft rejection. MATERIALS AND METHODS: We investigated 51 patients who underwent endomyocardial biopsies, electrocardiogram,...
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The New Diagnostic Algorithm for New or Presumably New Left Bundle Branch Block and Suspected Acute Myocardial Infarction

Kim DM, Oh SB

PURPOSE: Patients with a suspected acute myocardial infarction (AMI) in the setting of a new or presumably new left bundle branch block (LBBB) present an important diagnostic and therapeutic challenge...
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Left Axis Deviation in Patients with Acute Heart Failure with Left Bundle Branch Block: Does It Really Matter?

Choi EK

No abstract available.
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Prognostic Significance of Left Axis Deviation in Acute Heart Failure Patients with Left Bundle branch block: an Analysis from the Korean Acute Heart Failure (KorAHF) Registry

Choi KH, Han S, Lee GY, Choi JO, Jeon ES, Lee HY, Lee SE, Kim JJ, Chae SC, Baek SH, Kang SM, Choi DJ, Yoo BS, Kim KH, Cho MC, Park HY, Oh BH

BACKGROUND AND OBJECTIVES: The prognostic impact of left axis deviation (LAD) on clinical outcomes in acute heart failure syndrome (AHFS) with left bundle branch block (LBBB) is unknown. The aim...
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Preexcitation Syndrome with a Mahaim-type Accessory Pathway

Lee KN, Kim YH

Wide QRS complex tachycardia with a left bundle branch block pattern can be caused by supraventricular tachycardia with aberrant conduction, preexcitation syndrome mediated through a right-sided accessory pathway, and/or ventricular...
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Rapid and Potent Antiarrhythmic Effect of Cardiac Resynchronization Therapy in a Patient with Advanced Dilated Cardiomyopathy and a Large Ventricular Arrhythmia Burden

Jeon DS, Park JS

We report a case demonstrating a rapid and potent antiarrhythmic effect of biventricular pacing. A 67-year-old male patient with dilated cardiomyopathy was admitted for heart failure. The initial surface electrocardiogram...
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ST segment

Kwak CH

The ST segment corresponds to the plateau phase of ventricular repolarization, i.e., phase 2 of the action potential. Heightened awareness of the characteristic patterns of ST segment changes is vital...
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Kearns-sayre Syndrome Treated with Permanent Pacemaker Insertion for Complete Atrioventricular Block

Park EH, Her SH, Ha MA, Kim HS, Jang JH

Kearns-Sayre syndrome (KSS) is a rare multisystem mitochondrial disorder associated with progressive external ophthalmoplegia, atypical pigmentary degeneration of the retina, and complete heart block. KSS can lead to a risk...
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Prognostic Implication of the QRS Axis and its Association with Myocardial Scarring in Patients with Left Bundle Branch Block

Park CS, Cha MJ, Choi EK, Oh S

BACKGROUND AND OBJECTIVES: Left bundle branch block (LBBB) with left axis deviation (LAD) has a worse prognosis than LBBB with a normal axis, and myocardial dysfunction has been suggested as...
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Brugada Syndrome Patient Undertaken Brachial Plexus Block

Bang YS, Lee SY, Ko D, Park J, Ahn S, Park C

Brugada syndrome is an arrhythmic syndrome characterized by right bundle branch block, ST segment elevation in the precordial lead (V1-V3), and sudden death caused by ventricular fibrillation, which is not...
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Cardiac Resynchronization Therapy Device Implantation in a Patient with Cardiogenic Shock under Percutaneous Mechanical Circulatory Support

Lim K, Choi JO, Yang JH, Park SJ, Kim SH, Kang J, Joh HS, Shin SH

65-year-old woman was admitted to our hospital with acute decompensated heart failure with reduced left ventricular ejection fraction and severe mitral regurgitation. Electrocardiography revealed a typical left bundle branch block...
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Cardiac Resynchronization Therapy Defibrillator Treatment in a Child with Heart Failure and Ventricular Arrhythmia

Kim HJ, Cho S, Kim WH

Cardiac resynchronization therapy (CRT) is a new treatment for refractory heart failure. However, most patients with heart failure treated with CRT are adults, middle-aged or older with idiopathic or ischemic...
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Risk factors for heart failure in a cohort of patients with newly diagnosed myocardial infarction: a matched, case-control study in Iran

Ahmadi A, Etemad K, Khaledifar A

OBJECTIVES: Risk factors for heart failure (HF) have not yet been studied in myocardial infarction (MI) patients in Iran. This study was conducted to determine these risk factors. METHODS: In this...
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Clinical Characteristics and Features of Frequent Idiopathic Ventricular Premature Complexes in the Korean Population

Hwang JK, Park SJ, On YK, Kim JS, Park KM

BACKGROUND AND OBJECTIVES: Frequent ventricular premature complexes (VPCs) increase the risk of cardiomyopathy (CMP). However, most data regarding VPCs have been obtained from Western population and in-hospital patient-based studies. The...
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Complete atrioventricular block during tunneled cuffed hemodialysis catheter insertion in a patient with pre-existing left bundle branch block

Choi EW, Jung JY, Su JH, Park SH, Cho KH, Yoon KW, Park JW, Do JY, Kang SH

Arrhythmias are complications of tunneled cuffed hemodialysis catheter insertion. Most complications associated with arrhythmias occur during guide-wire access, where the guide wire can cause traumatic damage to the conduction system...
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Cardiac Resynchronization Therapy and QRS Duration: Systematic Review, Meta-analysis, and Meta-regression

Kang SH, Oh IY, Kang DY, Cha MJ, Cho Y, Choi EK, Hahn S, Oh S

Cardiac resynchronization therapy (CRT) has been shown to reduce the risk of death and hospitalization in patients with advanced heart failure with left ventricular dysfunction. However, controversy remains regarding who...
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