The prognostic value of fragmented QRS in patients undergoing transcatheter aortic valve implantation
This study aimed to examine the predictive role of fQRS morphology on long-term prognosis in patients undergoing TAVI due to severe aortic stenosis. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Nuray Kahraman Ay, Asim Enhos, Yasin Ay, Nijad Bakhshaliyev, Aydin Nadir, Erdem Karacop, Ilke Celikkale, Mahmut Uluganyan, Razaman Ozdemir, Omer Goktekin Source Type: research
The effect of moderate altitude on Tp-e interval, Tp-e/QT, QT, cQT and P-wave dispersion
Long-time exposure to high altitude leads to changing at the respiratory, cardiovascular and hematological systems. There is no sufficient study about cardiovascular changes in moderate altitude. The distance between the peak and the end of the T wave (Tp-e) is a measure of transmyocardial distribution of repolarization and may be associated to dangerous rhythm disorders and ventricular arrhythmias. Again, P-wave dispersion (PWD) described as the extension of interatrial and intraatrial conduction time and inhomogeneous spread of sinus pulses are well recognized electrophysiologic features in patients with atrial fibrillat...
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Murat Akcay Source Type: research
Life-threatening AV nodal re-entrant tachycardia: Four cases illustrating four different harmful mechanisms
We describe four cases of AVNRT with malignant presentations. Each case illustrates a different harmful mechanism. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: P.W. Boland, M.S. Green Source Type: research
Novel electrocardiographic features in carriers of hypertrophic cardiomyopathy causing sarcomeric mutations
The sensitivity and specificity of the conventional 12-lead ECG to identify carriers of hypertrophic cardiomyopathy (HCM) – causing mutations without left ventricular hypertrophy (LVH) has been limited. We assessed the ability of novel electrocardiographic parameters to improve the detection of HCM mutation carriers. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 17, 2018 Category: Cardiology Authors: Mikko Jalanko, Tiina Heli ö, Pirjo Mustonen, Jorma Kokkonen, Heini Huhtala, Mika Laine, Pertti Jääskeläinen, Mika Tarkiainen, Kirsi Lauerma, Petri Sipola, Markku Laakso, Johanna Kuusisto, Kjell Nikus Source Type: research
Improved acute haemodynamic response to cardiac resynchronization therapy using multipoint pacing cannot solely be explained by better resynchronization
The recently developed quadripolar left ventricular (LV) leads has been developed to increase the benefit of cardiac resynchronization therapy (CRT). These leads offer the option to stimulate the LV on multiple sites (multipoint pacing, MPP). Invasive hemodynamic measurements have shown that MPP increases hemodynamic response. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 16, 2018 Category: Cardiology Authors: Elien B. Engels, Annemijn Vis, Bianca D. van Rees, Lina Marcantoni, Francesco Zanon, Kevin Vernooy, Frits W. Prinzen Source Type: research
Atrial fibrillation observed on surface ECG can be atrial flutter or atrial tachycardia
Differentiating between atrial fibrillation (AF) and atrial tachycardia (AT) or atrial flutter (AFL) on surface ECG can be challenging. The same problem arises in animal models of AF, in which atrial arrhythmias are induced by pacing or pharmacological intervention with the goal of making mechanistic determinations. Some of these induced arrhythmias can be AFL or AT, even though it might appear as AF on the body-surface ECG based on irregular R-R intervals. We hypothesize that a dominant frequency (DF) analysis of the ECG can differentiate between the two distinct arrhythmias, even when it is not evident by the presence of...
Source: Journal of Electrocardiology - July 16, 2018 Category: Cardiology Authors: Elyar Ghafoori, Nathan Angel, Derek J. Dosdall, Rob S. MacLeod, Ravi Ranjan Source Type: research
Modified positioning of a smartphone based single-lead electrocardiogram device improves detection of atrial flutter
The AliveCor Kardia Mobile (AKM) is a handheld, smartphone based cardiac rhythm monitor that records a lead-I electrocardiogram (ECG). Despite being efficacious for detection of atrial fibrillation (AF), it is unclear whether atrial flutter (AFL) may be misdiagnosed as sinus rhythm due to regular R-R intervals. We hypothesised that generating lead-II tracings through repositioning of the AKM may improve visualisation of flutter waves and clinician diagnosis of AFL compared to traditional lead-I tracings. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 16, 2018 Category: Cardiology Authors: Kevin Rajakariar, Anoop N. Koshy, Jithin K. Sajeev, Sachin Nair, Louise Roberts, Andrew W. Teh Source Type: research
Updates to IEC/AAMI ECG standards, a new hybrid standard
The current set of IEC particular standards that pertain to electrocardiograph (ECG) devices, namely, 60601-2-25, 60601-2-27, and 60601-2-47, which define requirements and testing for the essential performance and basic safety of diagnostic ECG, ECG monitoring and ambulatory ECG systems, respectively. These standards have been harmonized with the corresponding AAMI standards, namely EC11, EC13 and EC38. Together these standards have been in existence for decades and have evolved separately even though the technology used in these three clinical applications is very similar. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 16, 2018 Category: Cardiology Authors: Brian Young, Johann-Jakob Schmid Source Type: research
Effective approaches to control non-actionable alarms and alarm fatigue
Alarm fatigue is a problem, well-recognized by clinicians, where exposure to high rates of clinical alarms, especially non-actionable ones, results in desensitization leading to dismissal of or slowed responses to the alarms. The risk to patients is poorly understood but may be substantial when the alarms that are true are ignored or the response is delayed. The effect on patients' families and the patients themselves is even more unclear but frequent alarms likely create psychological and physiological stress that may affect patient outcomes. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 16, 2018 Category: Cardiology Authors: Bradford D. Winters Source Type: research
Comparison between Negative T waves characteristics in acute coronary syndrome and pulmonary embolism
Electrocardiogram (ECG) is the first available modality used in patients with chest pain and dyspnea in emergency rooms.We aimed to study differences between acute coronary syndrome (ACS) and acute pulmonary embolism (APE) in patients presented primarily with abnormal negative T waves on their admission Electrocardiogram. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 15, 2018 Category: Cardiology Authors: Elnaz Javanshir, Samad Ghaffari, Reza Hajizadeh, Hanieh Sakha, Sahar Ghodratizadeh, Hadiseh Kavandi Source Type: research
The mechanical and hemodynamic effects of left ventricular pacing in heart failure with preserved ejection fraction and left bundle branch block
Cardiac resynchronization therapy (CRT) has revolutionized the care of patients with heart failure with reduced ejection fraction (HFrEF) and left bundle branch block (LBBB); some hypothesize that electrical resynchronization may also benefit patients with heart failure with preserved ejection fraction (HFpEF) and LBBB. We assessed the acute hemodynamic and mechanical impact of temporary LV pacing in 2 patients with HFpEF and LBBB and a “classic” pattern of echocardiographic dyssynchrony. LV pacing facilitated electrical resynchronization with acute resolution of mechanical dyssynchrony and improvements in invasively a...
Source: Journal of Electrocardiology - July 10, 2018 Category: Cardiology Authors: Daniel J. Friedman, Kasper Emerek, Peter S øgaard, Maryam Vejdani-Jahromi, Joseph Kisslo, Brett D. Atwater Source Type: research
New formula for defining “normal” and “prolonged” QT in patients with bundle branch block - A variant of Bogossian's formula
With great interest we read the publication by Yankelson et al. who describe another formula to estimate the QT interval in patients with left bundle brunch block [1]. We feel greatly honoured that our previous work could spark further investigations from these renowned cardiologists in this sometimes complex field of research. Yankelson et al. focused on the role of the JT interval in defining a normal QT interval in a patient population, developing LBBB after transcutaneous valve replacement. In our Heart Rhythm Publication from 2014 (Study for development of the Formula for estimation the modified QT-interval) we alread...
Source: Journal of Electrocardiology - July 9, 2018 Category: Cardiology Authors: Markus Zarse, Gerrit Fromeyer, Harilaos Bogossian Source Type: research
Successful catheter ablation of ventricular fibrillation: Which premature ventricular complexes should we target?
I read with great interest the article by Demir et al. [1] titled “A successful catheter ablation of a ventricular fibrillation” recently published in the Journal. The authors report the case of a 50-year-old male who presented with anterior ST-segment elevation myocardial infarction. An electrocardiogram (ECG) recorded on presentation demonstrated a 3 mm el evated ST segment in leads V1–V3 and negative T-waves in leads V3–V6. It was pointed out that within a few hours of an emergency revascularization, the patient had developed ventricular fibrillation (VF) and an electrical storm, which required repeated extern...
Source: Journal of Electrocardiology - July 7, 2018 Category: Cardiology Authors: Enes Elvin Gul Source Type: research
Electrocardiographic manifestations of severe hyperkalemia
Severe hyperkalemia is a hazardous condition that warrants urgent intervention. In critically ill patients, the electrocardiogram (ECG) can be the most immediately available diagnostic tool in identifying patients with potentially lethal hyperkalemia. Peaking of the T waves, the most widely appreciated ECG sign, is actually rarely a manifestation of life-threatening hyperkalemia. In this review, we provide several clinical-electrocardiographic manifestations that can help identify those patients with hyperkalemia who require prompt intervention. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 4, 2018 Category: Cardiology Authors: Laszlo Littmann, Michael A. Gibbs Tags: Review Source Type: research
Editorial Board
(Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 1, 2018 Category: Cardiology Source Type: research
