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https://www.readbyqxmd.com/read/27915267/occurrence-of-simultaneous-cathodal-anodal-capture-with-left-ventricular-quadripolar-leads-for-cardiac-resynchronization-therapy-an-electrocardiogram-evaluation
#1
Eraldo Occhetta, Gabriele Dell'Era, Ailia Giubertoni, Andrea Magnani, Francesco Rametta, Alessandro Blandino, Vincenzo Magnano, Maurizio Malacrida, Paolo Marino
AIMS: The occurrence of left ventricular (LV) anodal activation during pacing with modern multipolar cardiac resynchronization therapy (CRT) systems has never been reported. The aim of our study was to demonstrate, by means of electrocardiogram (ECG) analysis, the occurrence of simultaneous cathodal-anodal LV capture with quadripolar LV leads. METHODS AND RESULTS: We studied 10 first-time recipients of a CRT device equipped with a quadripolar LV lead. During follow-up, standard supine 12-lead ECGs were obtained in available cathode-to-anode LV pacing configurations with a pulse amplitude equal to twice the pacing threshold...
December 2, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27913077/pyloric-obstruction-secondary-to-epicardial-pacemaker-implantation-a-case-report
#2
G Bedoya Nader, H B Kellihan, D E Bjorling, J McAnulty
A 10-year old Lhasa Apso dog was presented for an acute history of exercise intolerance and hind limb weakness. High grade second degree atrioventricular block with an atrial rate of 200 beats per minute, ventricular rate of 40 beats per minute and an intermittent ventricular escape rhythm, was diagnosed on electrocardiograph. A transdiaphragmatic, unipolar, epicardial pacemaker was implanted without immediate surgical complications. Severe vomiting was noted 12 h post-operatively. Abdominal ultrasound and a barium study supported a diagnosis of pyloric outflow obstruction and exploratory abdominal surgery was performed...
November 29, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27911394/confirmation-of-myocardial-ischemia-and-reperfusion-injury-in-mice-using-surface-pad-electrocardiography
#3
Stephanie L C Scofield, Krishna Singh
Many animal models have been established for the study of myocardial remodeling and heart failure due to its status as the number one cause of mortality worldwide. In humans, a pathologic occlusion forms in a coronary artery and reperfusion of that occluded artery is considered essential to maintain viability of the myocardium at risk. Although essential for myocardial recovery, reperfusion of the ischemic myocardium creates its own tissue injury. The physiologic response and healing of an ischemia/reperfusion injury is different from a chronic occlusion injury...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27909514/influence-of-novel-electrocardiographic-features-of-provocable-brugada-ecg-in-arrhythmogenic-cardiomyopathy-and-its-exclusion-by-lead-avr
#4
REVIEW
Stefan Peters
In 19 patients (14 females, mean age 49.1 ± 11.3 years) with typical arrhythmogenic cardiomyopathy and provocable type I Brugada ECG pattern by ajmaline administration were analysed by novel electrocardiographic features as having "true" or "false" Brugada syndrome. Three patients turned out as having false Brugada syndrome, the diagnosis is pure arrhythmogenic cardiomyopathy. In 16 patients, however, true Brugada syndrome could be provoked. In these patients the diagnosis was arrhythmogenic cardiomyopathy associated by provocable Brugada syndrome...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908708/chlorogenic-acid-ameliorates-isoproterenol-induced-myocardial-injury-in-rats-by-stabilizing-mitochondrial-and-lysosomal-enzymes
#5
Palaniyandi Akila, Lourthurani Asaikumar, Lakshmanan Vennila
This study was deliberated to aspire the effects of chlorogenic acid (CGA) against myocardial infarction (MI) induced by Isoproterenol (ISO), in a rat model. In the pathology of MI, enzymes released due to the mitochondrial and lysosomal lipid peroxidation play an integral role. Induction of rats with ISO (85mg/kg BW) for 2 consecutive days resulted in a significant decrease in the activities of heart mitochondrial enzymes isocitrate dehydrogenase (ICDH), α-ketoglutarate dehydrogenase (α-KGDH), succinate dehydrogenase (SDH) and malate dehydrogenase (MDH)...
November 28, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27908476/-analysing-heart-rate-variability-to-improve-the-monitoring-of-pain
#6
REVIEW
Laura Butruille, Julien De Jonckheere, Mathieu Jeanne, Benoît Tavernier, Régis Logier
An innovative technique based on the analysis of instantaneous heart rate variability helps to improve the prevention and management of pain and discomfort. Simple to implement, this non-invasive technique is based on the continuous recording of the electrocardiograph signal.
December 2016: Revue de L'infirmière
https://www.readbyqxmd.com/read/27906655/methodology-considerations-in-phase-mapping-of-human-cardiac-arrhythmias
#7
Ramya Vijayakumar, Sunil K Vasireddi, Phillip S Cuculich, Mitchell N Faddis, Yoram Rudy
BACKGROUND: Phase analysis of cardiac arrhythmias, particularly atrial fibrillation, has gained interest because of the ability to detect organized stable drivers (rotors) and target them for therapy. However, the lack of methodology details in publications on the topic has resulted in ongoing debate over the phase mapping technique. By comparing phase maps and activation maps, we examined advantages and limitations of phase mapping. METHODS AND RESULTS: Seven subjects were enrolled...
November 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27906444/letter-to-the-editor-arrhythmic-risk-evaluation-in-familial-mediterranean-fever-the-role-of-electrocardiographic-and-echocardiographic-parameters
#8
V Russo, A Rago, F Di Meo, A A Papa, G Nigro
No abstract text is available yet for this article.
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27903879/the-analysis-of-qt-interval-and-repolarization-morphology-of-the-heart-in-chronic-exposure-to-lead
#9
J Kiełtucki, M Dobrakowski, N Pawlas, B Średniawa, M Boroń, S Kasperczyk
There are no common recommendations regarding electrocardiographic monitoring in occupationally exposed workers. Therefore, the present study was designed to investigate whether exposure to lead results in an increase of selected electrocardiography (ECG) pathologies, such as QT interval prolongation and repolarization disorders, in occupationally exposed workers. The study group included 180 workers occupationally exposed to lead compounds. The exposed group was divided according to the median of the mean blood lead level (PbBmean) calculated based on a series of measurements performed during 5-year observation period (35 µg/dl) into two subgroups: low exposure (LE, PbBmean = 20...
November 30, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27899069/gastric-dilatation-and-intestinal-obstruction-mimicking-acute-coronary-syndrome-with-dynamic-electrocardiographic-changes
#10
H M M T B Herath, Anne Thushara Matthias, B S D P Keragala, W A E Udeshika, Aruna Kulatunga
BACKGROUND: ST elevation myocardial infarction is a medical emergency and the electrocardiogram is a part of the mainstay in the initial diagnosis. A variety of non-cardiac conditions have been known to mimic the electrocardiographic changes seen in acute coronary syndrome. We present a patient presenting with acute partial intestinal obstruction causing gastric distension and intestinal dilatation who also had dynamic electrocardiographic changes, mimicking anterior ST elevation myocardial infarction...
November 29, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27895693/p-wave-dispersion-on-12-lead-electrocardiography-in-adolescents-with-neurocardiogenic-syncope
#11
Dong-Hyuk Lee, Kyung-Min Lee, Jung-Min Yoon, Jae-Woo Lim, Kyung-Ok Kho, Hong-Ryang Kil, Eun-Jung Cheon
PURPOSE: Neurocardiogenic syncope (NCS) is the most frequent cause of fainting during adolescence. Inappropriate cardiovascular autonomic control may be responsible for this clinical event. The head-up tilt test has been considered a diagnostic standard, but it is cumbersome and has a high false-positive rate. We performed a study to evaluate whether P-wave dispersion (PWD) could be a useful electrocardiographic parameter of cardiac autonomic dysfunction in children with NCS. METHODS: Fifty-four patients with NCS (28 boys and 26 girls; mean age, 12...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/27892421/screening-for-atrial-fibrillation-during-influenza-vaccinations-by-primary-care-nurses-using-a-smartphone-electrocardiograph-iecg-a-feasibility-study
#12
Jessica Orchard, Nicole Lowres, S Ben Freedman, Laila Ladak, William Lee, Nicholas Zwar, David Peiris, Yasith Kamaladasa, Jialin Li, Lis Neubeck
BACKGROUND: People with unknown atrial fibrillation (AF), who are often asymptomatic, have a substantially increased risk of stroke. Although recommended in European guidelines, AF screening is not routinely performed. Screening at the time of influenza vaccination presents an ideal opportunity to detect AF in large numbers in a primary care medical setting, with an existing annual recall system for patients aged ≥65 years. DESIGN: Cross-sectional pilot study of handheld smartphone electrocardiogram (iECG) screening to identify unknown AF...
October 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27890878/prevalence-of-electrocardiographic-abnormalities-in-patients-with-myasthenia-gravis
#13
Jun Tsugawa, Masahiro Ogawa, Shinji Ouma, Jiro Fukae, Yoshio Tsuboi
OBJECTIVE: Myasthenia gravis (MG) is an immunological disorder of the neuromuscular junction, characterized by easy fatigability and weakness of the skeletal muscles. However, it has sometimes been reported that heart diseases including cardiomyopathies leading to sudden death have been observed in patients with MG. We studied the prevalence of electrocardiographic (ECG) abnormalities and heart disease in patients newly diagnosed with MG who had not received immunotherapy. METHODS: Fifty-three patients with MG were enrolled in our study...
November 25, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27887720/prehospital-electrocardiographic-acuteness-score-of-ischemia-is-inversely-associated-with-neurohormonal-activation-in-stemi-patients-with-severe-ischemia
#14
Yama Fakhri, Mikkel Malby Schoos, Maria Sejersten, Mads Ersbøll, Nana Valeur, Lars Køber, Christian Hassager, Galen S Wagner, Jens Kastrup, Peter Clemmensen
BACKGROUND: Elevated levels of N-terminal pro brain natriuretic peptide (NT-proBNP) are associated with adverse cardiovascular outcome after ST elevation myocardial infarction (STEMI). We hypothesized that decreasing acuteness-score (based on the electrocardiographic score by Anderson-Wilkins acuteness score of myocardial ischemia) is associated with increasing NT-proBNP levels and the impact of decreasing acuteness-score on NT-proBNP levels is substantial in STEMI patients with severe ischemia...
November 10, 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27886932/newer-echocardiographic-techniques-in-cardiac-resynchronization-therapy
#15
REVIEW
John Gorcsan, Bhupendar Tayal
Echocardiographic imaging plays a major role in patient selection for cardiac resynchronization therapy (CRT). One-third of patients do not respond; there is interest in advanced echocardiographic imaging to improve response. Current guidelines favor CRT for patients with electrocardiographic (ECG) QRS width of 150 milliseconds or greater and left bundle branch block. ECG criteria are imperfect; there is interest in advanced echocardiographic imaging to improve patient selection. This discussion focuses on newer echocardiographic methods to improve patient selection, improve delivery, and identify patients at risk for poor outcomes and serious ventricular arrhythmias...
January 2017: Heart Failure Clinics
https://www.readbyqxmd.com/read/27883210/rationale-and-design-of-the-bayes-interatrial-block-and-yearly-events-registry
#16
Manuel Martínez-Sellés, Adrian Baranchuk, Roberto Elosua, Antonio Bayés de Luna
The prevalence of interatrial block (IAB) is high in the elderly, particularly in those with heart disease. Despite this high prevalence-and the association of IAB with the risk of atrial fibrillation (AF), stroke, and cognitive decline-little information exists about the prognosis of older patients with IAB. P-wave duration and morphology are associated with risk of developing AF, stroke, and cognitive decline in elderly patients with structural heart disease. The aim of the Interatrial Block and Yearly Events (BAYES) registry is to assess the impact of IAB on the risk of AF and stroke during 3 years of follow-up...
November 24, 2016: Clinical Cardiology
https://www.readbyqxmd.com/read/27882075/in-silico-evaluation-of-the-potential-antiarrhythmic-effect-of-epigallocatechin-3-gallate-on-cardiac-channelopathies
#17
Maroua Boukhabza, Jaouad El Hilaly, Nourdine Attiya, Ahmed El-Haidani, Younes Filali-Zegzouti, Driss Mazouzi, Mohamed-Yassine Amarouch
Ion channels are transmembrane proteins that allow the passage of ions according to the direction of their electrochemical gradients. Mutations in more than 30 genes encoding ion channels have been associated with an increasingly wide range of inherited cardiac arrhythmias. In this line, ion channels become one of the most important molecular targets for several classes of drugs, including antiarrhythmics. Nevertheless, antiarrhythmic drugs are usually accompanied by some serious side effects. Thus, developing new approaches could offer added values to prevent and treat the episodes of arrhythmia...
2016: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/27879618/the-value-of-detecting-asymptomatic-signs-of-myocardial-ischemia-in-patients-with-coronary-artery-disease-in-outpatient-cardiac-rehabilitation
#18
Patricia Lounsbury, Ahmed S Elokda, Jennifer M Bunning, Ross Arena, Ellen E I Gordon
BACKGROUND: Electrocardiographic (ECG) monitored outpatient cardiac rehabilitation (OP-CR) is routinely performed following a variety of cardiovascular procedures and conditions. OBJECTIVE: The aim of this study is to determine if diagnostic-quality ECG monitoring in patients with coronary artery disease (CAD) during OP-CR is useful in identifying asymptomatic myocardial ischemia, resulting in change(s) in care or medical management. METHODS: A retrospective analysis of ECG monitoring was done on all OP-CR patients diagnosed with CAD (n = 1213) from January 2000 through June 2013...
November 22, 2016: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/27873155/physiology-based-regularization-of-the-electrocardiographic-inverse-problem
#19
Matthijs J M Cluitmans, Michael Clerx, Nele Vandersickel, Ralf L M Peeters, Paul G A Volders, Ronald L Westra
The inverse problem of electrocardiography aims at noninvasively reconstructing electrical activity of the heart from recorded body-surface electrocardiograms. A crucial step is regularization, which deals with ill-posedness of the problem by imposing constraints on the possible solutions. We developed a regularization method that includes electrophysiological input. Body-surface potentials are recorded and a computed tomography scan is performed to obtain the torso-heart geometry. Propagating waveforms originating from several positions at the heart are simulated and used to generate a set of basis vectors representing spatial distributions of potentials on the heart surface...
November 21, 2016: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/27873006/feasibility-of-omitting-provocation-test-with-50%C3%A2-%C3%AE-g-of-acetylcholine-in-left-coronary-artery
#20
Yuichi Saito, Hideki Kitahara, Toshihiro Shoji, Satoshi Tokimasa, Takashi Nakayama, Kazumasa Sugimoto, Yoshihide Fujimoto, Yoshio Kobayashi
According to the Japanese Circulation Society guideline of vasospastic angina, incremental doses of acetylcholine (ACh) are prescribed for coronary spasm provocation: 20 and 50 μg for the right coronary artery (RCA), and 20, 50 and 100 μg for the left coronary artery (LCA). However, provocation by low doses of ACh in patients with low vasoreactivity may be less needed, and the requirement of 50 μg of ACh for the LCA in these patients has not been evaluated. In the present study, patients who underwent ACh provocation test for both the RCA and LCA were included...
November 21, 2016: Heart and Vessels
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