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Annals of Noninvasive Electrocardiology

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https://www.readbyqxmd.com/read/28299892/the-relationship-between-j-waves-and-contact-of-lung-cancer-with-the-heart
#1
Hideki Hayashi, Qi Wu, Minoru Horie
BACKGROUND: J waves result mainly from an increased density of transient outward current (Ito ). Mechanical stretch to the heart activates multiple signal transduction pathways, in which Ito may be involved. The purpose of this study was to test the hypothesis that mechanical contact of lung cancer with the heart may manifest J waves. METHODS: We reviewed 12-lead electrocardiograms to examine whether J waves were associated with contact of lung cancer with the heart...
March 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28248005/evaluation-of-the-ecg-based-selvester-scoring-method-to-estimate-myocardial-scar-burden-and-predict-clinical-outcome-in-patients-with-left-bundle-branch-block-with-comparison-to-late-gadolinium-enhancement-cmr-imaging
#2
Uzma Chaudhry, Pyotr G Platonov, Robert Jablonowski, Jean-Philippe Couderc, Henrik Engblom, Xiajuang Xia, Björn Wieslander, Brett D Atwater, David G Strauss, Jesper Van der Pals, Martin Ugander, Marcus Carlsson, Rasmus Borgquist
BACKGROUND: Myocardial scar burden quantification is an emerging clinical parameter for risk stratification of sudden cardiac death and prediction of ventricular arrhythmias in patients with left ventricular dysfunction. We investigated the relationships among semiautomated Selvester score burden and late gadolinium enhancement-cardiovascular magnetic resonance (LGE-CMR) assessed scar burden and clinical outcome in patients with underlying heart failure, left bundle branch block (LBBB) and implantable cardioverter-defibrillator (ICD) treatment...
March 1, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28247979/effects-of-exercise-training-intensity-on-cardiac-autonomic-regulation-in-habitual-smokers
#3
Choun-Sub Kim, Maeng-Kyu Kim, Hye-Young Jung, Mi-Ji Kim
BACKGROUND: The sympathoexcitatory effects of cigarette smoking cause an autonomic imbalance that may lead to cardiovascular disease. Aerobic training improves autonomic function by developing cardiorespiratory fitness; however, it is still uncertain whether aerobic training ameliorates the compromised autonomic modulation in smokers. This study aimed to investigate the effects of 8 weeks' aerobic training at different exercise intensities on autonomic regulation in habitual smokers...
March 1, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28247524/assessment-of-heart-rate-response-to-exercise-and-recovery-during-treadmill-testing-in-arsenic-exposed-workers
#4
Ugur Nadir Karakulak, Meside Gunduzoz, Mehmet Ayturk, Mujgan Tek Ozturk, Engin Tutkun, Omer Hinc Yilmaz
BACKGROUND: Arsenic exposure is associated with various cardiovascular diseases. The aim of the present study was to assess cardiac autonomic function via heart rate response to exercise and recovery period of treadmill testing in arsenic-exposed workers. METHODS: Sixty-five (65) occupationally arsenic-exposed workers and 35 healthy controls were enrolled. Blood and urinary arsenic levels were analyzed and symptom limited maximal treadmill exercise test were performed...
March 1, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28236352/antazoline-insights-into-drug-induced-electrocardiographic-and-hemodynamic-effects-results-of-the-elephant-ii-substudy
#5
Roman Piotrowski, Joanna Giebułtowicz, Jakub Baran, Agnieszka Sikorska, Dagmara Gralak-Łachowska, Małgorzata Soszyńska, Piotr Wroczyński, Piotr Kułakowski
BACKGROUND: Antazoline is an old antihistaminic and new antiarrhythmic agent with unknown mechanisms of action which recently has been shown to effectively terminate atrial fibrillation. The aim of study was to examine the effects of antazoline on hemodynamic and ECG parameters. METHODS: Antazoline was given intravenously in three 100 mg boluses to 10 healthy volunteers (four males, mean age 40 + 11 years). Hemodynamic and ECG parameters were measured using impedance cardiography [systolic (sBP), diastolic (dBP), mean (mBP) blood pressure, stroke volume (SV), cardiac output (CO), total peripheral resistance (TPR) and heart rate (HR), P wave, PR interval, QRS complex, QT and corrected QT (QTcF) interval]...
February 25, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28220574/selective-use-of-the-electrocardiogram-in-pediatric-preparticipation-athletic-examinations-among-pediatric-primary-care-providers
#6
Bradley C Clark, Joshua M Hayman, Charles I Berul, Kristin M Burns, Jonathan R Kaltman
OBJECTIVES: Recent literature examining insurance administrative data suggests that a selective approach, with concurrent history and physical exam (H&P), for obtaining an electrocardiogram (ECG) as a part of a preparticipation examination (PPE) for pediatric athletes is commonly used in the primary care setting demonstrating a high rate of disease detection. We sought to understand practice patterns of providers with regard to usage of ECG as a part of PPE. METHODS: Utilizing an online survey, we queried primary care providers regarding their practice patterns, rationale, and concerns regarding use of ECGs as a part of the PPE...
February 21, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28217909/successful-use-of-sirolimus-for-refractory-atrial-ectopic-tachycardia-in-a-child-with-cardiac-rhabdomyoma
#7
Sanja Ninic, Marija Kalaba, Bosiljka Jovicic, Vladislav Vukomanovic, Sergej Prijic, Biljana Vucetic, Ruzica Kravljanac, Ana Vujic, Jovan Kosutic
Cardiac rhabdomyomas are common in tuberous sclerosis. We report a child who developed rhabdomyoma related arrhythmia refractory to antiarrhythmic drug therapy. Reversion of the atrial ectopic tachycardia was achieved with mammalian target of rapamycin pathway (mTOR) inhibitor sirolimus. As per our knowledge, this is the first time that sirolimus has been successfully used in this setting.
February 19, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28213958/significance-of-a-negative-sinus-p-wave-in-lead-v2-of-the-clinical-electrocardiogram
#8
Rex N MacAlpin
BACKGROUND: A negative sinus P wave in lead V2 (NPV2 ) of the electrocardiogram (ECG) is rare when leads are positioned correctly. This study was undertaken to clarify the significance of an unusually high incidence of this anomaly found in ECGs at my institution. METHODS: One thousand four hundred thirty-five ECGs were randomly selected to determine the incidence and gender frequency in tracings showing positive (PPV2 ), and biphasic (BPV2 ) P waves in V2 , as well as NPV2 ...
February 18, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28213932/correlations-between-electrocardiogram-and-biomarkers-in-acute-pulmonary-embolism-analysis-of-zatpol-2-registry
#9
Piotr Kukla, Dariusz A Kosior, Andrzej Tomaszewski, Katarzyna Ptaszyńska-Kopczyńska, Katarzyna Widejko, Robert Długopolski, Andrzej Skrzyński, Piotr Błaszczak, Kamil Fijorek, Marcin Kurzyna
BACKGROUND: Electrocardiography (ECG) is still one of the first tests performed at admission, mostly in patients (pts) with chest pain or dyspnea. The aim of this study was to assess the correlation between electrocardiographic abnormalities and cardiac biomarkers as well as echocardiographic parameter in patients with acute pulmonary embolism. METHODS: We performed a retrospective analysis of 614 pts. (F/M 334/280; mean age of 67.9 ± 16.6 years) with confirmed acute pulmonary embolism (APE) who were enrolled to the ZATPOL-2 Registry between 2012 and 2014...
February 18, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28213914/novel-method-to-assess-intrinsic-heart-rate-recovery-in-ambulatory-ecg-recordings-tracks-cardioprotective-effects-of-chronic-autonomic-regulation-therapy-in-patients-enrolled-in-the-anthem-hf-study
#10
Gerrard M Carlson, Imad Libbus, Badri Amurthur, Bruce H KenKnight, Richard L Verrier
BACKGROUND: Postexercise heart rate recovery (HRR) is a powerful and independent predictor of mortality. Autonomic regulation therapy (ART) with chronic vagus nerve stimulation (VNS) has been shown to improve ventricular function in patients with chronic heart failure. However, the effect of ART on HRR in patients with heart failure remains unknown. METHODS: A new measure involving quantification of intrinsic HRR was developed for 24-hr ambulatory ECG (AECG) recordings based on spontaneous heart rate changes observed during daily activity in patients with symptomatic heart failure and reduced ejection fraction...
February 17, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28211121/relationship-between-qt-and-jt-peak-interval-variability-in-prepubertal-children
#11
Yuka Takeuchi, Yumi Omeki, Kayo Horio, Miki Nishio, Rina Nagata, Shota Oikawa, Yuri Mizutani, Arisa Nagatani, Yuri Funamoto, Hidetoshi Uchida, Masayuki Fujino, Yoshihiko Eryu, Hiroko Boda, Masafumi Miyata, Tadayoshi Hata
BACKGROUND: The QT variability index (QTVI) is a noninvasive index of repolarization lability that has been applied to subjects with cardiovascular disease. QTVI provides a ratio of normalized QT variability to normalized heart rate variability, and therefore includes an assessment of autonomic nervous activity. However, measurement of QT time is particularly difficult in children, who exhibit physiologically high heart rates compared with adults. In this study, we developed a set of standard values of J-point to Tpeak interval (JTp) for infants by age, and assessed the correlation of QTVI with the JTp variability index (JTpVI)...
February 17, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28205276/positive-t-wave-in-lead-avr-as-an-independent-predictor-for-1-year-major-adverse-cardiac-events-in-patients-with-first-anterior-wall-st-segment-elevation-myocardial-infarction
#12
Akihiro Kobayashi, Naoki Misumida, Shunsuke Aoi, Yumiko Kanei
BACKGROUND: Positive T wave in lead aVR has been shown to predict an adverse in-hospital outcome in patients with anterior wall ST-segment elevation myocardial infarction (STEMI). However, the prognostic value of positive T wave in lead aVR on a long-term outcome has not been fully explored. METHODS: We performed a retrospective analysis of 190 consecutive patients with first anterior wall STEMI who underwent an emergent coronary angiogram. Patients were divided into those with positive T wave > 0 mV and those with negative T wave ≦ 0 mV in lead aVR...
February 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28191737/ecg-in-athlete-normal-or-pathologic-variant
#13
LETTER
Helder Dores, António Freitas
No abstract text is available yet for this article.
February 13, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28191684/sequence-of-cardiovascular-autonomic-alterations-after-fingolimod-initiation
#14
Sakari Simula, Tomi P Laitinen, Tiina M Laitinen, Päivi Hartikainen, Juha E K Hartikainen
BACKGROUND: Homeostasis between heart rate and blood pressure is based on several interacting regulatory reflexes, which become influenced by fingolimod initiation. The aim of this study was to determine the sequence of changes in cardiovascular autonomic regulation after fingolimod initiation. METHODS: Twenty-seven patients with relapsing-remitting multiple sclerosis underwent continuous electrocardiogram recording during the first 6 hr after the first dose of fingolimod...
February 13, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28188661/idiopathic-epicardial-ventricular-tachycardia-from-the-coronary-venous-system-from-electrocardiographic-recognition-to-appropriate-therapy
#15
Stéphane Boulé, Claire Federspiel, Eric Verbrugge, Didier Klug
Idiopathic epicardial ventricular tachycardias (VTs) account for 9% of idiopathic VTs. The recognition of this entity is important, as a minimally invasive ablation procedure performed exclusively through the coronary sinus branches may be considered, avoiding the potential risks associated with access to the left ventricular endocardium, the aortic root, and the pericardial space. The electrocardiographic features and therapeutic management of this rare form of tachycardia are discussed.
February 11, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28117536/cardiovascular-magnetic-resonance-guided-management-of-mild-to-moderate-left-ventricular-systolic-dysfunction-cmr-guide-study-protocol-for-a-randomized-controlled-trial
#16
Joseph B Selvanayagam, Trent Hartshorne, Laurent Billot, Suchi Grover, Graham S Hillis, Werner Jung, Henry Krum, Sanjay Prasad, Andrew D McGavigan
BACKGROUND: The majority of sudden cardiac death (SCD) in patients with heart failure occurs in those with mild-moderate left ventricular (LV) systolic dysfunction (LVEF 36-50%) who under current guidelines are ineligible for primary prevention implantable cardiac defibrillator (ICD) therapy. Recent data suggest that cardiac magnetic resonance (CMR) evidence of replacement fibrosis forms a substrate for malignant arrhythmia and therefore potentially identifies a subgroup at increased risk of SCD...
January 24, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28090710/fibrillatory-wave-amplitude-on-transesophageal-ecg-as-a-marker-of-left-atrial-low-voltage-areas-in-patients-with-persistent-atrial-fibrillation
#17
Ran Yin, Yongnan Fu, Zhongming Yang, Bingong Li, Jintian Pen, Zeqi Zheng
BACKGROUND: Low-voltage areas (LVAs) are frequently observed in patients with persistent atrial fibrillation (PeAF) and may represent adverse atrial remodeling. However, noninvasive method of evaluating LAVs is not well established. METHODS: In a cohort of 68 patients with PeAF, endocardial voltage maps of left atrium (LA) were created during sinus rhythm after pulmonary vein isolation (PVI). LVAs were defined as areas with electrogram amplitudes <0.5 mV. LA-LVAs were correlated with clinical, echocardiographic, surface, and transesophageal electrocardiography (TE-ECG) variables...
January 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28058808/repeatability-of-ectopic-beats-from-48-hr-ambulatory-electrocardiography-the-atherosclerosis-risk-in-communities-aric-study
#18
Michelle L Meyer, Elsayed Z Soliman, Lisa M Wruck, Thomas H Mosley, Lynne E Wagenknecht, Anna K Poon, Eric A Whitsel, Alvaro Alonso, Gerardo Heiss, Laura R Loehr
BACKGROUND: The purpose of this study was to characterize the repeatability of ectopic beats, defined by premature atrial contractions (PACs) and premature ventricular contractions (PVCs), on ambulatory electrocardiogram (aECG) monitoring and evaluate the effect of length of aECG monitoring on the repeatability estimates. METHODS: This analysis includes 95 randomly selected participants from the Atherosclerosis Risk in Communities Study (ARIC; 2011-2013). The participants wore a Holter monitor for two, 48-hr periods separated by a mean of 38 days following an identical, standardized protocol...
January 6, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28044401/atrioventricular-synchrony-in-the-background-of-ventricular-noise-and-undersensing
#19
Paweł T Matusik, Andrzej Ząbek, Patrycja S Matusik, Barbara Małecka, Jacek Lelakowski
The 24-hr electrocardiogram (ECG) interpretation in patients with double-chamber pacemakers may be challenging. The difficulty increases if not well-known pacemaker algorithm and device malfunction coexist. We show atrial synchronization pace (ASP) in a patient with ventricular lead damage. We provide detailed description of electrocardiogram and intracardiac electrogram. ASP may confuse 24-hr ECG monitoring interpretation, especially in patients with ventricular lead dysfunction.
January 3, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28044391/initial-electrocardiogram-as-determinant-of-hospital-course-in-st-elevation-myocardial-infarction
#20
Michael A Millard, Vijaiganesh Nagarajan, Luke C Kohan, Robert C Schutt, Ellen C Keeley
BACKGROUND: A proportion of patients with ST elevation myocardial infarction (STEMI) have an initial electrocardiogram (ECG) that is nondiagnostic and are definitively diagnosed on a subsequent ECG. Our aim was to assess whether patients with a nondiagnostic initial ECG are different than those with a diagnostic initial ECG. METHODS: We collected demographic, ECG, medication, angiographic, and in-hospital clinical outcome data in consecutive patients undergoing primary percutaneous coronary intervention for STEMI at our institution from June 2009 to June 2013...
January 3, 2017: Annals of Noninvasive Electrocardiology
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