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Journal of Electrocardiology

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https://www.readbyqxmd.com/read/28666538/the-relevance-of-looking-for-right-bundle-branch-block-in-catheter-ablation-of-ebstein-s-anomaly
#1
Laila Gonzalez-Melchor, Santiago Nava, Pedro Iturralde, Manlio F Marquez
INTRODUCTION: Ebstein's anomaly is the most commonly occurring congenital defect associated with the Wolff-Parkinson-White syndrome. In patients with Ebstein's anomaly and supraventricular tachycardia, the absence of right bundle branch block (RBBB) in sinus rhythm is a highly sensitive and specific indicator of the presence of an ipsilateral accessory AP. CASE: We present an electrophysiology case of a patient with Ebstein's anomaly and 3 ipsilateral accessory pathways...
June 17, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28645449/high-incidence-of-st-t-changes-in-women-during-tilt-table-testing
#2
Prakash Goutham Suryanarayana, Jagdesh Kandala, Frank I Marcus
INTRODUCTION: We have observed electrocardiographic (ECG) changes primarily in women during tilt table testing. METHODS: We reviewed 12 lead ECGs during tilt studies between 2012 and 2016 for changes in ST segments and T waves during tilt table testing. Patients with distinctly abnormal baseline ECGs were excluded. RESULTS: Of the 180 tilt studies, 117 (65%) were in women. There were 32 patients with ECG changes during tilting. Of these, 28 (87...
June 9, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28641861/permanent-his-bundle-pacing-in-intra-hisian-conduction-block-mechanistic-insights
#3
Bengt Herweg, Paul Z Gerczuk, Aamir Sofi, Pugazhendhi Vijayaraman, S Serge Barold
We are reporting a patient with discrete intra-His conduction block and describe a refined technique of permanent His bundle pacing assuring reliable ventricular capture. Meticulous mapping of the site of block with lead placement distal to the site of block and non-selective His bundle pacing with local myocardial capture as an additional safety back up appears to be the technique of choice.
June 9, 2017: Journal of Electrocardiology
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
#4
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
#5
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/28641860/noninvasive-blood-potassium-measurement-using-signal-processed-single-lead-ecg-acquired-from-a-handheld-smartphone
#6
Omar Z Yasin, Zachi Attia, John J Dillon, Christopher V DeSimone, Yehu Sapir, Jennifer Dugan, Virend K Somers, Michael J Ackerman, Samuel J Asirvatham, Christopher G Scott, Kevin E Bennet, Dorothy J Ladewig, Dan Sadot, Amir B Geva, Paul A Friedman
OBJECTIVE: We have previously used a 12-lead, signal-processed ECG to calculate blood potassium levels. We now assess the feasibility of doing so with a smartphone-enabled single lead, to permit remote monitoring. PATIENTS AND METHODS: Twenty-one hemodialysis patients held a smartphone equipped with inexpensive FDA-approved electrodes for three 2min intervals during hemodialysis. Individualized potassium estimation models were generated for each patient. ECG-calculated potassium values were compared to blood potassium results at subsequent visits to evaluate the accuracy of the potassium estimation models...
June 8, 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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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/28651797/left-ventricular-hypertrophy-by-the-surface-ecg
#17
REVIEW
Ljuba Bacharova, E Harvey Estes
Left ventricular hypertrophy (LVH) is defined as an increase in left ventricular mass (LVM) associated with structural changes of myocardium. The increase in LVM and associated changes are associated with changes in depolarization and repolarization, manifested as a variety of altered QRS and T patterns. Increased QRS voltage has been considered to be a specific ECG finding in LVH, and ECG criteria based on this increased QRS voltage are generally recommended. These ECG changes are also predictive of adverse cardiovascular outcomes...
June 7, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28623015/inadvertent-left-ventricular-pacing-and-perforation-by-a-temporary-pacemaker
#18
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/28645448/takotsubo-syndrome-presenting-as-syncope-in-a-patient-with-permanent-pacemaker
#19
Bharatraj Banavalikar, Sivasankaran Sivasubramonian, Narayanan Namboodiri, Krishna Kumar Mohanan Nair, Dibya Ranjan Behera, Ajitkumar Valaparambil
Takotsubo syndrome is an acute reversible heart failure syndrome triggered by physical or emotional stress, especially in postmenopausal women. Herein, we describe a case of a 31-year-old pacemaker dependent lady who presented with syncope after she was bereaved of her father. Electrocardiogram at admission revealed ventricular paced rhythm at 60/min, prolonged QT interval and frequent runs of torsades de pointes. Transthoracic echocardiogram and left ventriculogram revealed findings typical of Takotsubo syndrome...
May 18, 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
#20
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
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