The 43rd International Society for Computerized Electrocardiology ECG initiative for the automated detection of strict left bundle branch block
The presence of left bundle branch block (LBBB) is an important predictor of benefit from cardiac resynchronization therapy (CRT). New “strict” electrocardiographic (ECG) criteria for LBBB have been shown to better predict benefit from CRT. The “strict” LBBB criteria include: QRS duration ≥140 ms (men) or ≥130 ms (women), QS- or rS-configurations of the QRS complex in leads V1 and V2, and mid-QRS notching or slurrin g in ≥2 of leads V1, V2, V5, V6, I and aVL. The “strict” LBBB criteria are not regularly used and most hospital automated ECG systems and physicians still use more conventional LBBB criter...
Source: Journal of Electrocardiology - August 1, 2018 Category: Cardiology Authors: Robbert Zusterzeel, Jose Vicente, Roberto Ochoa-Jimenez, Jun Zhu, Jean-Philippe Couderc, Esther Akinnagbe-Zusterzeel, David G. Strauss Source Type: research
Yield and consistency of arrhythmia detection with patch electrocardiographic monitoring: The Multi-Ethnic Study of Atherosclerosis
Patch electrocardiographic (ECG) monitors permit extended noninvasive ambulatory monitoring. To guide use of these devices, information is needed about their performance. We sought to determine in a large general population sample the acceptability of patch ECG monitors, the yield of arrhythmia detection, and the consistency of findings in participants monitored twice. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 30, 2018 Category: Cardiology Authors: Susan R. Heckbert, Thomas R. Austin, Paul N. Jensen, James S. Floyd, Bruce M. Psaty, Elsayed Z. Soliman, Richard A. Kronmal Source Type: research
Archiving and exchange of digital ECGs: A review of existing data formats
Digital ECG is today a common practice but a universal format for its storage and exchange has never been widely implemented. The reason is linked on one side to the need of the manufacturing industry to (rightly) protect intellectual propriety and technology, but on the other to an inadequate effort of the research community to sufficiently enforce the use of digital ECG data. To some degree, and at least from a practical point of view, the problem is also linked to other factors, such as the need in some instances to protect patient-sensitive information, and whether digital exchanged data should also include annotations...
Source: Journal of Electrocardiology - July 30, 2018 Category: Cardiology Authors: Fabio Badilini, Brian Young, Barry Brown, Martino Vaglio Source Type: research
Reference values of ECG parameters derived from 906 echocardiographically confirmed healthy Indian children: A population-based study from Gujarat
There are few published studies on reference ranges of ECG parameters in children; some ethnic differences have been described. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 28, 2018 Category: Cardiology Authors: Snehal Kulkarni, Khushboo Chaudhari, Pooja Hingorani, Dilip R. Karnad, Gopi Krishna Panicker, Jahnavi D. Narula, Snehal N. Kothari Source Type: research
Rapid 12-lead automated localization method: Comparison to electrocardiographic imaging (ECGI) in patient-specific geometry
Rapid accurate localization of the site of ventricular activation origin during catheter ablation for ventricular arrhythmias could facilitate the procedure. Electrocardiographic imaging (ECGI) using large lead sets can localize the origin of ventricular activation. We have developed an automated method to identify sites of early ventricular activation in real time using the 12-lead ECG. We aim to compare the localization accuracy of ECGI and the automated method, identifying pacing sites/VT exit based on a patient-specific model. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 28, 2018 Category: Cardiology Authors: Shijie Zhou, B. Milan Hor áček, James W. Warren, Amir AbdelWahab, John L. Sapp Source Type: research
Severe hypercalcemia from multiple myeloma as an acquired cause of short QT
An otherwise healthy 64-year-old man with recently diagnosed multiple myeloma was admitted to hospital with hypercalcemia and renal failure. Despite his electrocardiogram showing short QT/QTc intervals, he was admitted without cardiac monitoring. He died suddenly a few hours later, likely from a fatal arrhythmia. This case illustrates that pronounced QT shortening from hypercalcemia is an underappreciated malignant finding that can portend a significant risk for arrhythmia and sudden cardiac death. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 28, 2018 Category: Cardiology Authors: Yingwei Liu, Andr és Ricardo Pérez-Riera, Raimundo Barbosa-Barros, Rodrigo Daminello-Raimundo, Luiz Carlos de Abreu, Kjell Nikus, Adrian Baranchuk Source Type: research
A crossroads in predictive analytics monitoring for clinical medicine
A new goal for medical informatics is to develop robust tools that integrate clinical data on a patient in order to estimate the risk of imminent adverse events. This new field of predictive analytics monitoring is growing very quickly. Its claims, however, can be vulnerable when clinicians fail to use the best mathematical and statistical tools, when quantitative scientists fail to grasp the nuances of clinical medicine, and when either fails to incorporate knowledge of physiology. Its potential, though is clear: we can provide more effective clinical decision support and make better predictive analytics monitoring tools ...
Source: Journal of Electrocardiology - July 28, 2018 Category: Cardiology Authors: J. Randall Moorman Source Type: research
A call to alarms: Current state and future directions in the battle against alarm fatigue
Research demonstrates that the majority of alarms derived from continuous bedside monitoring devices are non-actionable. This avalanche of unreliable alerts causes clinicians to experience sensory overload when attempting to sort real from false alarms, causing desensitization and alarm fatigue, which in turn leads to adverse events when true instability is neither recognized nor attended to despite the alarm. The scope of the problem of alarm fatigue is broad, and its contributing mechanisms are numerous. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 28, 2018 Category: Cardiology Authors: Marilyn Hravnak, Tiffany Pellathy, Lujie Chen, Artur Dubrawski, Anthony Wertz, Gilles Clermont, Michael R. Pinsky Tags: Review Source Type: research
The first successful implantation of an intravenous AAIR pacemaker into autologous extracardiac lateral tunnel Fontan in the child
Patients with a single ventricle have complex anatomy that requires staged palliation which is usually the Fontan procedure. This procedure has undergone a lot of modifications to improve hemodynamics. Despite these efforts, sinus node dysfunction (SND) and bradyarrythmias, are still common complications after Fontan operation, therefore there is a need of pacemakers implantation. Unfortunately, the most frequent technique of creating Fontan cannale – the extracardiac lateral tunnel makes the transvenous access to the atrium difficult or impossible to achieve. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 26, 2018 Category: Cardiology Authors: Aleksandra Konieczny, Ewa J ędrzejczyk-Patej, Jonasz Kozielski, Wiktoria Kowalska, Maciej Bugajski, Linda Litwin, Zbigniew Kalarus, Beata Średniawa, Oskar Kowalski Source Type: research
An “inappropriately appropriate” shock in a subcutaneous implantable cardioverter-defibrillator: The importance of the SMART pass algorithm
We report on a case of a 78-years-old patient with a subcutaneous implantable cardioverter defibrillator (S-ICD) and an episode of a sustained ventricular tachycardia (VT) at a rate slower than the programmed shock zone. Because of T-wave oversensing the device interpreted it as fast VT that triggered the delivery of an “inappropriately appropriate shock” that terminated it. The patient had again more VT episodes but after programming the SMART pass algorithm (previously programmed “OFF”) the device showed no longer frequent T-wave oversensing and no additional inappropriate shocks occurred. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 26, 2018 Category: Cardiology Authors: Jos é M. Rubio Campal, Juan Benezet-Mazuecos, Pepa Sánchez-Borque, Ángel Miracle Blanco, Julián Crosa, Miguel Angel Arias Source Type: research
Anterior ST-segment elevation secondary to right coronary occlusion: The sheep in wolf's clothing
We present a case of an anterior ST-segment elevation acute coronary syndrome secondary to occlusion of a non-dominant right coronary artery. Usually, an anterior ST-segment elevation corresponds to a left anterior descending artery occlusion; however, in rare cases it can be secondary to a non-dominant right coronary artery occlusion. The two causal entities may be adequately differentiated by the detailed analysis of the ECG. The electrocardiographic criteria that allow the proper prediction of the culprit artery in anterior ST-segment elevation acute coronary syndrome are reviewed. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 23, 2018 Category: Cardiology Authors: Alberto Cecconi, Esther Gonzalez Bartol, Teresa Bastante, Luis Jesus Jimenez-Borreguero, Fernando Alfonso Source Type: research
Fragmented QRS complex in patients with implantable cardioverter defibrillator —Prevalence and predisposing factors
Incidence of fragmented (fQRS) and predisposing factors in patients with implantable cardioverter-defibrillator (ICD) have not yet been established.AimTo examine incidence of fQRS, associated factors as well as predictive value in identifying site of coronary artery disease (CAD). (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Anna Kucharz, Piotr Ku łakowski Source Type: research
The effect of revascularization of a chronic total coronary occlusion on electrocardiographic variables. A sub-study of the EXPLORE trial
Chronic total coronary occlusions (CTOs) have been associated with a higher prevalence of ventricular arrhythmias compared to patients without a CTO. We evaluated the effect of CTO revascularization on electrocardiographic (ECG) variables. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Ivo M. van Dongen, Maarten Z.H. Kolk, Jo ëlle Elias, Veronique M.F. Meijborg, Ruben Coronel, Jacques M.T. de Bakker, Bimmer E.P.M. Claessen, Ronak Delewi, Dagmar M. Ouweneel, Esther M. Scheunhage, René J. van der Schaaf, Maarten-Jan Suttorp, Matthijs Ba Source Type: research
Investigation of the relationship between two novel electrocardiogram-based sudden cardiac death risk markers and autonomic function
Regional Restitution Instability Index (R2I2) and Peak ECG Restitution Slope (PERS) are promising sudden cardiac death (SCD) risk markers. R2I2 and PERS use the standard 12 ‑lead ECG to measure properties of electrical restitution implicated in ventricular arrhythmogenesis. We investigated the relationship between R2I2, PERS and autonomic function to inform future application of these risk markers. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Samuel P. Trethewey, William B. Nicolson, G. Andr é Ng Source Type: research
Fragmented QRS complex in patients with implantable cardioverter defibrillator – Prevalence and predisposing factors
Incidence of fragmented (fQRS) and predisposing factors in patients with implantable cardioverter-defibrillator (ICD) have not yet been established.AimTo examine incidence of fQRS, associated factors as well as predictive value in identifying site of coronary artery disease (CAD). (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - July 18, 2018 Category: Cardiology Authors: Anna Kucharz, Piotr Kulakowski Source Type: research
