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Journal of Electrocardiology

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https://www.readbyqxmd.com/read/28625399/rv6-rv5-vs-sd-sv4-%C3%A2-2-8mv-in-men-and-%C3%A2-2-3mv-in-women-in-the-diagnosis-of-electrocardiographically-determined-left-ventricular-hypertrophy
#1
LETTER
John E Madias
No abstract text is available yet for this article.
June 9, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623018/spiked-helmet-sign-after-percutaneous-left-stellate-ganglion-ablation-in-a-patient-with-long-qt-syndrome
#2
Farid Aliyev, Vugar Abdulkerimov, Enes Elvin Gul, Fuad Samedov, Elnur Isayev, Elnur Ferecov
"Spiked helmet" is a type of ST elevation, which is generally observed in critically ill patients and associated with very poor prognosis. Here we present a case of previously undiagnosed long QT syndrome admitted with polymorphic ventricular tachycardia (PMVT) unresponsive to pharmacological treatment and developed "spiked helmet" sign after left percutaneous stellate ganglion ablation.
June 9, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28629807/spike-or-not-a-spike-that-is-the-question-in-a-patient-with-single-lead-pacemaker
#3
Antonio Rojas-González, Alberto Cecconi, Jose L Merino, Luis J Jimenez-Borreguero, Fernando Alfonso
Dual-chamber pacing is feasible via the floating atrial sensor electrodes of a single-pass VDD lead but the atrial lead threshold is higher than the accepted clinical standard. Furthermore, due to the floating nature of the system, atrial sensing and pacing thresholds may vary during the follow up. For these reasons this strategy is seldom considered a common pacing solution in routine clinical practice. Alternatively, this phenomenon is likely to be observed as a result of incorrect generator configuration...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28625400/successful-treatment-of-ventricular-fibrillation-storm-triggered-by-short-long-short-sequence-time-to-avoid-managed-ventricular-pacing
#4
Hilmi Alnsasra, Yuval Konstantino, Sergiy Bereza, Moti Haim
Sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) is caused by ventricular tachyarrhythmia that can be effectively treated by implantable cardioverter defibrillator (ICD) therapy. We report of a 28-year-old man with HCM and a dual chamber ICD, originally implanted for primary prevention of SCD, (programmed to AAI(R)-DDD(R); managed ventricular pacing (MVP) mode, Medtronic Inc. St Paul, MN USA). He presented with recurrent ICD shocks due to ventricular fibrillation (VF) despite antiarrhythmic therapy...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28625398/pseudoventricular-tachycardia-during-drilling-and-screw-placement-in-a-cervical-vertebra
#5
Anoop Muniyappa, Nora Goldschlager, Michelle Patzelt, Thomas J Krall, Julin F Tang
No abstract text is available yet for this article.
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28625397/quantitative-evaluation-of-heartbeat-interval-time-series-using-poincar%C3%A3-analysis-reveals-distinct-patterns-of-heart-rate-dynamics-during-cycles-of-vagus-nerve-stimulation-in-patients-with-heart-failure
#6
Imad Libbus, Bruce D Nearing, Badri Amurthur, Bruce H KenKnight, Richard L Verrier
BACKGROUND: Optimization of stimulation parameters is essential to maximizing therapeutic efficacy and minimizing side effects. METHODS: The ANTHEM-HF study enrolled patients with heart failure who received chronic autonomic regulation therapy (ART) with an implantable vagus nerve stimulation (VNS) system on either the right (n=30) or left side (n=29). Acute effects of continuously cycling VNS on R-R interval dynamics were evaluated using post hoc Poincaré analysis of ECG recordings collected during multiple titration sessions over an 8-12week period...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28624117/a-case-of-pacemaker-malfunction-should-i-intervene
#7
Colin Yeo, David H Birnie, Girish M Nair
A 53year old lady was noted to have persistent bradycardia in the recovery unit shortly after a dual chamber permanent pacemaker (PPM) was implanted. The patient was asymptomatic. The pacemaker was implanted for symptomatic intermittent complete heart block. She had surgical closure of an atrial septal defect three decades earlier and a previous tricuspid valve replacement with concomitant biatrial cryomaze procedure for paroxysmal atrial fibrillation.
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623017/electrocardiogeriatrics-ecg-in-advanced-age
#8
REVIEW
Lourdes Vicent, Manuel Martínez-Sellés
The electrocardiogram (ECG) presents substantial changes associated with aging. In fact, the likelihood of having a "normal" ECG decreases with age. The most common findings are left ventricular hypertrophy pattern, leftward axis deviation and QRS widening. Interatrial block (IAB) is frequently present, mainly partial IAB. Atrial fibrillation prevalence raises from 6-7% in those aged 65-74years to 13-17% in those >75years.
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623016/the-relationship-between-neutrophil-to-lymphocyte-ratio-and-fragmented-qrs-in-acute-stemi-patients-treated-with-primary-pci
#9
Zulkif Tanriverdi, Tugce Colluoglu, Huseyin Dursun, Dayimi Kaya
BACKGROUND: No study so far investigated fragmented QRS (fQRS) and neutrophil-to-lymphocyte ratio (NLR) together in ST segment elevation myocardial infarction (STEMI). OBJECTIVE: To investigate the relationship between NLR and fQRS, and determine the prognostic significance of the combined use of these two parameters in STEMI. METHODS: We included 368 patients with first acute STEMI who successfully revascularized with primary percutaneous coronary intervention...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623014/electrocardiographic-risk-stratification-of-asymptomatic-population-without-cardiovascular-disease-should-we-add-the-qrs-t-angle
#10
EDITORIAL
Yochai Birnbaum, Kjell Nikus
No abstract text is available yet for this article.
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623013/low-qrs-voltage-on-presenting-electrocardiogram-predicts-multi-vessel-disease-in-anterior-st-segment-elevation-myocardial-infarction
#11
Akihiro Kobayashi, Naoki Misumida, Shunsuke Aoi, Yumiko Kanei
BACKGROUND: Low QRS voltage was reported to predict adverse outcomes in acute myocardial infarction in the pre-thrombolytic era. However, the association between low voltage and angiographic findings has not been fully addressed. METHODS: We performed a retrospective analysis of patients with anterior ST-segment elevation myocardial infarction (STEMI). Low QRS voltage was defined as either peak to peak QRS complex voltage <1.0mV in all precordial leads or <0...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623012/p-wave-peak-time-a-novel-electrocardiographic-parameter-in-the-assessment-of-coronary-no-reflow
#12
Metin Çağdaş, Süleyman Karakoyun, İbrahim Rencüzoğulları, Yavuz Karabağ, Mahmut Yesin, Mustafa Ozan Gürsoy, İnanç Artaç, Doğan İliş, Süleyman Çağan Efe, Onur Taşar, Gürkan Karaca
OBJECTIVES: Coronary no-reflow (NR) following primary percutaneous coronary intervention (pPCI) is associated with worsened prognosis in patients with ST segment elevation myocardial infarction (STEMI). Despite rapid developments in cardiovascular area; there are limited data regarding prediction of NR before pPCI. P wave duration and dispersion (PWD, PWDIS, respectively) have been studied in STEMI patients and found to be associated with reperfusion success; however none of them has been found to predict NR before PCI...
June 8, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623015/inadvertent-left-ventricular-pacing-and-perforation-by-a-temporary-pacemaker
#13
Jingyang Lin, Lihong Wang, Yan Zhao
Myocardial perforation by pacemaker electrode is a very serious complication. Usually, the pacemaker electrode perforates the right ventricle, but rarely the left ventricular myocardium. We describe an 82-year-old female patient who presented with left ventricular pacing after temporary pacemaker implantation and was diagnosed with myocardial perforation. Emergency thoracotomy showed that the exact position of the cardiac perforation was close to the left ventricular apex. Perforation of the left ventricular free wall by an electrode sometimes progresses slowly...
June 3, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28579259/clinical-location-of-the-fourth-and-fifth-intercostal-spaces-as-a-percent-of-the-length-of-the-sternum
#14
Frank Marcus, Trina Hughes, Phillip Barrios, Mark Borgstrom
OBJECTIVES: To verify accurate placement of the precordial ECG leads by identifying the 4th and 5th intercostal spaces as a function of the length of the sternum. This should decrease the percentage of lead misplacement leading to misdiagnoses. METHODS: The population consisted of patients and healthy volunteers. The proposed method compared palpation of the 4th and 5th intercostal spaces to a percentile of the sternal length. Location of the 4th and 5th intercostal space using a simple device was evaluated to assist in proper placement of the precordial leads to obtain accurate diagnosis...
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28554515/catheter-ablation-of-epicardial-ventricular-tachycardia-from-the-coronary-venous-system-is-endocardial-mapping-always-required
#15
Stéphane Boulé, Gauthier Garret, Zouheir Souissi, Didier Klug
Endocardial mapping is typically considered as the first step of VT ablation procedures. Nevertheless, when the electrocardiogram is highly suggestive of an epicardial VT, a minimally invasive procedure performed exclusively via the coronary sinus might be considered. This straightforward approach avoids all potential complications associated with access to the left ventricular endocardium, the aortic root, and the pericardial space.
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28554514/remodeling-of-ventricular-repolarization-in-experimental-right-ventricular-hypertrophy
#16
S N Kharin, V V Krandycheva, A S Tsvetkova, K V Shumikhin
BACKGROUND: To understand electrophysiological mechanisms that underlie the progression of compensated right ventricular hypertrophy (RVH) to heart failure, the purpose of the study was to evaluate remodeling of ventricular repolarization in connection with hemodynamic abnormalities and vulnerability of the heart ventricles to arrhythmias in RVH rats with pulmonary arterial hypertension (PAH) and heart failure. METHODS: PAH followed by heart failure was induced by monocrotaline in adult female Wistar rats...
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28554513/right-ventricular-apical-versus-non-apical-implantable-cardioverter-defibrillator-lead-a-systematic-review-and-meta-analysis
#17
Jalaj Garg, Rahul Chaudhary, Neeraj Shah, Chandrasekar Palaniswamy, Babak Bozorgnia, Talha Nazir, Andrea Natale, Valentina Kutyifa
INTRODUCTION: We aimed to study the effect of right ventricular implantable cardioverter defibrillator (ICD) lead positioning on clinical outcomes in patients undergoing ICD placement. METHODS: A systematic literature search was performed using PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials to identify clinical trials comparing outcomes in patients with ICD leads in apical and non-apical positions. The primary outcome of our study was death at 1-year follow-up...
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28554512/functional-atrial-undersensing-associated-with-device-algorithm-promoting-av-conduction
#18
Pasquale Crea, Angela Nicotera, Dalia Di Nunzio, Giuseppe Picciolo
A 58-year-old woman received a dual chamber pacemaker (Medtronic) for sick sinus syndrome. Given intact AV conduction the Managed Ventricular Pacing mode algorithm (MVP) was programmed. The day after, she suffered from palpitations. Her ECG showed a possible loss of atrial capture accompanied by atrial undersensing. Telemetry-supported pacemaker control confirmed the loss of capture. Undersensing of atrial signal was functional, related to long atrial refractory period in MVP mode algorithm. Device algorithms could induce false suspicions...
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28552419/a-new-algorithm-for-arrhythmia-interpretation
#19
Marzieh Mirtajaddini
BACKGROUND: Electrocardiogram (ECG) is an essential tool used to diagnose serious heart disease but its interpretation is challenging for undergraduate students and junior practitioners despite numerous methods that have been suggested to aid ECG interpretation. This paper aims to present a new algorithm for arrhythmia interpretation that is superior to current methods to be used as a supplement to lecture materials for medical students. METHODS: A new systematic algorithm is introduced in this paper...
May 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28576322/accuracy-in-precordial-ecg-lead-placement-improving-performance-through-a-peer-led-educational-intervention
#20
Samar A Medani, Mark Hensey, Norma Caples, Patrick Owens
BACKGROUND AND OBJECTIVES: Inaccurate electrocardiography (ECG) lead placement may lead to erroneous diagnoses, such as poor R wave progression. We sought to assess the accuracy of precordial ECG lead placement amongst hospital staff members, and to re-evaluate performance after an educational intervention. METHODS AND RESULTS: 100 randomly selected eligible staff members placed sticker dots on a mannequin, their positions were recorded on a radar plot and compared to the correct precordial lead positions...
May 16, 2017: Journal of Electrocardiology
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