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Annals of Noninvasive Electrocardiology

Wibke Reinhard, Teresa Trenkwalder, Bernhard Haller, Christine Meindl, Julia Schoenfeld, Bernhard M Kaess, Christian Hengstenberg, Heribert Schunkert, Axel Pressler, Martin Halle, Johannes Scherr
BACKGROUND: The electrocardiographic early repolarization (ER) pattern is associated with idiopathic ventricular fibrillation and increased long-term cardiovascular mortality. Whether structural cardiac aberrations influence the phenotype is unclear. Since ER is particularly common in athletes, we evaluated its prevalence and investigated predisposing echocardiographic characteristics and cardiopulmonary exercise capacity in a cohort of elite athletes. METHODS: A total of 623 elite athletes (age 21 ± 5 years) were examined during annual preparticipation screening from 2006 until 2012 including electrocardiography, echocardiography, and exercise testing...
November 14, 2018: Annals of Noninvasive Electrocardiology
Guoyong Li, Qiao Li, Baotao Huang, Mao Chen
BACKGROUND: Electrocardiogram is an essential modality for diagnosis and early risk stratification for patients with acute coronary syndrome (ACS), but its long-term prognostic value has not been well studied. This study tried to investigate the long-term prognostic value of variations of ECG parameters at admission and discharge in patients with non-ST-segment elevation myocardial infarction (NSTEMI). METHODS: A total of 170 NSTEMI patients were recruited consecutively from 2013 to 2014 in West China Hospital of Sichuan University...
November 14, 2018: Annals of Noninvasive Electrocardiology
Duygu İlke Yıldırım, Mert İlker Hayıroğlu, Neriman Ünal, Mehmet Ali Eryılmaz
BACKGROUND: Varenicline, which is a selective partial agonist of the alpha4-beta2 nicotinic acetylcholine receptor, is used for the smoking cessation pharmacotherapy. Cardiovascular adverse effects have been reported after varenicline usage in patients who stop smoking. We investigated the effect of varenicline usage on ventricular repolarization after smoking cessation. METHODS: In this prospective cohort study, we evaluated the cardiac arrhythmic effects of varenicline by comparing smoking patients (n = 214) before and after varenicline usage...
November 12, 2018: Annals of Noninvasive Electrocardiology
Seçkin Dereli, Adil Bayramoğlu, Osman Can Yontar
OBJECTIVE: Atrial fibrillation (AF) is the most common cardiac rhythm disorder with the associated risks of stroke and mortality. The usefulness of platelet to lymphocyte ratio (PLR), a recently described inflammatory marker, in predicting adverse cardiovascular events has been demonstrated in several studies. In the current study, we investigated the role of PLR in predicting recurrence after successful electrical cardioversion (ECV) in patients with non-valvular persistent AF. METHODS: A total of 287 patients with non-valvular persistent AF achieving restoration of the sinus rhythm after successful ECV were included in this study...
November 10, 2018: Annals of Noninvasive Electrocardiology
Elif Ijlal Cekirdekci, Barış Bugan
BACKGROUND: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy characterized by ventricular arrhythmias and specific ventricular pathology. Repolarization abnormalities, the significant contributor to life-threatening arrhythmias and mortality, are frequently observed ECG changes in patients with ARVC. This study aimed to evaluate the changes in Tp-e interval, Tp-e/QT, Tp-e/QTc ratio, and traditional electrocardiographic features of electrical dispersion in patients with ARVC...
November 9, 2018: Annals of Noninvasive Electrocardiology
Jason A Thomas, Erick A Perez-Alday, Allison Junell, Kelley Newton, Christopher Hamilton, Yin Li-Pershing, David German, Aron Bender, Larisa G Tereshchenko
BACKGROUND: Global electrical heterogeneity (GEH) is associated with sudden cardiac death (SCD) in adults of 45 years and above. However, GEH has not been previously measured in young athletes. The goal of this study was to establish a reference for vectorcardiograpic (VCG) metrics in male and female athletes. METHODS: Skiers (n = 140; mean age 19.2 ± 3.5 years; 66% male, 94% white; 53% professional athletes) were enrolled in a prospective cohort. Resting 12-lead ECGs were interpreted per the International ECG criteria...
November 7, 2018: Annals of Noninvasive Electrocardiology
Chayapat Tangwiwat, Yodying Kaolawanich, Rungroj Krittayaphong
BACKGROUND: Electrocardiography (ECG) may be an efficacious diagnostic and prognostic tool in hypertrophic cardiomyopathy (HCM). This study aimed to investigate association between deep T-wave inversion (TWI) and apical HCM, and between fragmented QRS (fQRS) complex and myocardial fibrosis in patients with HCM. METHODS: Patients with documented HCM by cardiac magnetic resonance imaging (CMR) during 2005-2015 were studied. The 12-lead ECG and CMR were performed on the same day...
November 7, 2018: Annals of Noninvasive Electrocardiology
Kamil Gulsen, Orhan Ince, Gokmen Kum, Flora Ozkalayci, Irfan Sahin, Ertugrul Okuyan
BACKGROUND: Fragmented QRS evaluated in 12-derivation electrocardiography has widely been accepted as a sign of myocardial fibrosis. The prognostic value of that marker has been demonstrated, particularly, in cardiac diseases that accompany myocardial scar and fibrosis. Myocardial fibrosis is also an issue in patients with aortic stenosis. In this study, we wanted to determine whether fragmented QRS could predict all-cause mortality in aortic stenosis patients after transcatheter aortic valve replacement (TAVR)...
November 7, 2018: Annals of Noninvasive Electrocardiology
Kenichi Hashimoto, Yuji Kasamaki, Masayoshi Soma, Bonpei Takase
BACKGROUND: T-wave alternans (TWA) is a risk stratification predictor for sudden cardiac death. However, little is known about the diurnal variation of TWA. Whether TWA are affected by heart rate (HR) or cardiac autonomic nervous activity in the subjects without significant structural heart disease in daily life is not fully understood. Thus, this study was aimed to clarify these issues. METHODS: Frequency domain (FD)-TWA analysis was conducted in 47 subjects without significant structural heart disease using 24-hr ambulatory electrocardiogram (AECG)...
November 7, 2018: Annals of Noninvasive Electrocardiology
Asami Kashiwa, Fumio Koyama, Koji Miyamoto, Tsukasa Kamakura, Mitsuru Wada, Kenichiro Yamagata, Kohei Ishibashi, Yuko Inoue, Hideo Okamura, Satoshi Nagase, Takashi Noda, Takeshi Aiba, Shinichiro Watanabe, Akihiro Goto, Satoshi Yasuda, Kengo Kusano
BACKGROUND: Detecting asymptomatic and undiagnosed atrial fibrillation (AF) is increasingly important. Recently, we developed a wristwatch-based pulse wave monitor (PWM; Seiko Epson, Japan) capable of long-term recording, with an automatic diagnosis algorithm that uses frequency-based pulse wave analysis. The aim of this study was to evaluate the validity of continuous pulse wave monitoring for detection of AF. METHODS: During the electrophysiological study (EPS) in patients with AF, simultaneous pulse wave monitoring and Holter electrocardiograms (ECG) were recorded (n = 136, mean age 62...
November 2, 2018: Annals of Noninvasive Electrocardiology
Mahboob Alam, Kjell Nikus, Miguel Fiol, Antoni Bayes de Luna, Yochai Birnbaum
We describe a patient with acute coronary syndrome, presenting with upsloping ST depression in leads I, II, V3-V6 and ST elevation in lead aVR. Coronary angiography revealed spontaneous dissection in a big, dominant left circumflex artery. No other lesions identified. During stenting of the dissection site, the distal left circumflex, supplying a large posterior descending artery was occluded, resulting in ST elevation myocardial infarction with ST elevation in lead III and aVF, but not II. This pattern is considered to represent right coronary artery infarction, rather than left circumflex infarction...
November 2, 2018: Annals of Noninvasive Electrocardiology
Yochai Birnbaum, Joseph Allencherril
No abstract text is available yet for this article.
November 1, 2018: Annals of Noninvasive Electrocardiology
Mislav Puljevic, Ludmila Danilowicz-Szymanowicz, Giulio Molon, Davor Puljevic, Grzegorz Raczak, Guido Canali, Vedran Velagic, Borka Pezo-Nikolic, Davor Milicic
AIMS: Microvolt T-wave alternans (MTWA) testing is a beat-to-beat fluctuation in the amplitude of T wave. We investigated whether: (a) MTWA can be new non-invasive tool for detection of reversible ischemia in patients with suspected CAD without structural heart disease, (b) MTWA can detect ischemia earlier and with greater test accuracy compared with exercise ECG ST-segment testing, and (c) threshold value of MTWA and heart rate at which the alternans is estimated can be different compared to standard values...
November 1, 2018: Annals of Noninvasive Electrocardiology
Chanavuth Kanitsoraphan, Pattara Rattanawong, Poemlarp Mekraksakit, Pakawat Chongsathidkiet, Tanawan Riangwiwat, Napatt Kanjanahattakij, Wasawat Vutthikraivit, Saranapoom Klomjit, Subhanudh Thavaraputta
BACKGROUND: Recent studies suggested that fragmented (fQRS) is associated with poor clinical outcomes in heart failure with reduced ejection fraction (HFrEF) patients. However, no systematic review or meta-analysis has been done. We conducted a systematic review and meta-analysis to assess the association between baseline fQRS and all-cause mortality in HFrEF. METHODS: We comprehensively reviewed the databases of MEDLINE and EMBASE from inception to February 2018...
October 17, 2018: Annals of Noninvasive Electrocardiology
Qingmiao Shao, Lei Meng, Gary Tse, Abhishek C Sawant, Calista Zhuo Yi Chan, George Bazoukis, Adrian Baranchuk, Guangping Li, Tong Liu
BACKGROUND: The electrocardiographic criteria currently available for the diagnosis of left ventricular hypertrophy (LVH) are low in sensitivity. Thus, we compared the diagnostic performance of newly proposed electrocardiographic criteria to the existing criteria in a Chinese population. METHODS: A total of 235 consecutive hypertensive patients, hospitalized in our department between May 2017 and April 2018, were included. They were divided into two groups based on the gold standard echocardiogram: those with (n = 116) and without LVH (n = 119)...
October 3, 2018: Annals of Noninvasive Electrocardiology
Norman C Wang, Aliza Hussain, Evan C Adelstein, Andrew D Althouse, Michael S Sharbaugh, Sandeep K Jain, Alaa A Shalaby, Andrew H Voigt, Samir Saba
BACKGROUND: Baseline predictors of myocardial recovery after cardiac resynchronization therapy (CRT) in left bundle branch block (LBBB)-associated idiopathic nonischemic cardiomyopathy (NICM) are unknown. METHODS: A retrospective study included subjects with idiopathic NICM, left ventricular ejection fraction (LVEF) ≤35%, and LBBB. Myocardial recovery was defined as post-CRT LVEF ≥50%. Logistic regression analyses described associations between baseline characteristics and myocardial recovery...
September 28, 2018: Annals of Noninvasive Electrocardiology
Bert Vandenberk, M Juhani Junttila, Tomas Robyns, Christophe Garweg, Joris Ector, Heikki V Huikuri, Rik Willems
BACKGROUND: Sudden cardiac death (SCD) results from a complex interplay of abnormalities in autonomic function, myocardial substrate and vulnerability. We studied whether a combination of noninvasive risk stratification tests reflecting these key players could improve risk stratification. METHODS: Patients implanted with an ICD in whom 24-hr holter recordings were available prior to implant were included. QRS fragmentation (fQRS) was selected as measure of myocardial substrate and a high ventricular premature beat count (VPB >10/hr) for arrhythmic vulnerability...
September 28, 2018: Annals of Noninvasive Electrocardiology
Jakob Almer, Viktor Elmberg, Josef Bränsvik, David Nordlund, Ardavan Khoshnood, Michael Ringborn, Marcus Carlsson, Ulf Ekelund, Henrik Engblom
BACKGROUND: Patients with acute coronary occlusion (ACO) may not only have ischemia-related ST-segment changes but also changes in the QRS complex. It has recently been shown in dogs that a greater ischemic QRS prolongation (IQP) during ACO is related to lower collateral flow. This suggests that greater IQP could indicate more severe ischemia and thereby more rapid infarct development. Therefore, the purpose was to evaluate the relationship between IQP and measures of myocardial injury in patients presenting with acute ST-elevation myocardial infarction (STEMI)...
September 28, 2018: Annals of Noninvasive Electrocardiology
Hussam Ali, Pierpaolo Lupo, Guido De Ambroggi, Sara Foresti, Riccardo Mantovani, Carmen Adduci, Riccardo Cappato
Junctional and AV nodal reentrant tachycardia share common electrocardiographic features, but they differ in their management and outcomes after catheter ablation. This case concerns a 60-year-old female who presented with recurrent episodes of a relatively slow, regular supraventricular arrhythmia. Electrocardiographic features of the arrhythmia were discordant regarding its underlying mechanism. However, careful analysis of 12-lead electrocardiograms, with focus on the effect of spontaneous premature beats, pointed out the arrhythmia etiology...
September 28, 2018: Annals of Noninvasive Electrocardiology
Chang Wang, Sanoj Chacko, Hoshiar Abdollah, Adrian Baranchuk
A 28-year-old previously healthy male presented with nonprodromal syncope and a 4-day history of chest pain, shortness of breath, and malaise. His ECG showed rapidly progressive high-degree AV block. His Suspicious Index in Lyme Carditis (SILC) score was 8, indicating high risk for Lyme carditis. Lyme serology revealed to be positive (anti-Lyme IgM). During the second day of hospitalization, the patient deteriorated his AV conduction, and a temporary-permanent pacemaker was implanted allowing ambulating in hospital the very same day...
September 28, 2018: Annals of Noninvasive Electrocardiology
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