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Ventricular Fibrilation

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https://www.readbyqxmd.com/read/28449090/alcohol-consumption-sinus-tachycardia-and-cardiac-arrhythmias-at-the-munich-octoberfest-results-from-the-munich-beer-related-electrocardiogram-workup-study-munichbrew
#1
Stefan Brunner, Rebecca Herbel, Cathrine Drobesch, Annette Peters, Steffen Massberg, Stefan Kääb, Moritz F Sinner
Aims: Alcohol is a risk factor for cardiac arrhythmias. Retrospective analyses suggest supraventricular arrhythmias consecutive to acute alcohol consumption, but prospective data are limited. We intended to prospectively associate acute alcohol consumption with cardiac arrhythmias. Methods and results: At the 2015 Munich Octoberfest, we enrolled 3028 voluntary participants who received a smartphone-based ECG and breath alcohol concentration (BAC) measurements. ECGs were analysed for cardiac arrhythmias (sinus tachycardia, sinus arrhythmia, premature atrial/ventricular complexes, atrial fibrillation/flutter) and respiratory sinus arrhythmia...
April 25, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28448275/multi-band-decomposition-analysis-application-to-cardiac-alternans-as-a-function-of-temperature
#2
A Gizzi, A Loppini, E M Cherry, C Cherubini, F H Fenton, S Filippi
OBJECTIVE: It has long been known that variations in temperature can facilitate the development of cardiac arrhythmias. Here, we aim to quantify the effects of temperature on cardiac alternans properties. APPROACH: in this work, we use optical mapping recordings of canine ventricular epicardial preparations to demonstrate that hypothermia can promote the formation of alternans, which is an important precursor to potentially lethal arrhythmias like fibrillation. We then present a novel quantification of alternans properties for a broad range of cycle lengths under different thermal states...
April 27, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28447260/adequate-sensing-of-ventricular-fibrillation
#3
A W G J Oomen, B M van Gelder, F A L E Bracke
No abstract text is available yet for this article.
April 26, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28447259/adequate-sensing-of-ventricular-fibrillation
#4
A W G J Oomen, B M van Gelder, F A L E Bracke
No abstract text is available yet for this article.
April 26, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28445595/ventricular-fibrillation-cardiac-arrest-produces-a-chronic-striatal-hyperdopaminergic-state-that-is-worsened-by-methylphenidate-treatment
#5
Gerald J Nora, Rashed Harun, David F Fine, Daniel Hutchison, Adam C Grobart, Jason P Stezoski, Miranda Munoz, Patrick M Kochanek, Rehana K Leak, Tomas Drabek, Amy K Wagner
Cardiac arrest survival rates have improved with modern resuscitation techniques, but many survivors experience impairments associated with hypoxic-ischemic brain injury. Currently, little is understood about chronic changes in striatal dopamine (DA) systems after hypoxic-ischemic brain injury. Given the common empiric clinical use of DA enhancing agents in neurorehabilitation, investigation evaluating dopaminergic alterations after cardiac arrest (CA) is necessary to optimize rehabilitation approaches. We hypothesized that striatal DA neurotransmission would be altered chronically after ventricular fibrillation cardiac arrest (VF-CA)...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28444773/mechanical-dispersion-and-global-longitudinal-strain-by-speckle-tracking-echocardiography-predictors-of-appropriate-implantable-cardioverter-defibrillator-therapy-in-hypertrophic-cardiomyopathy
#6
Ozkan Candan, Cetin Gecmen, Emrah Bayam, Ahmet Guner, Mehmet Celik, Cem Doğan
PURPOSE: In this study, we investigated whether mechanical dispersion which reflects electrical abnormality and other echocardiographic and clinic parameters predict appropriate ICD shock in patients undergone ICD implantation for hypertrophic cardiomyopathy. METHODS: Sixty-three patients who received ICD implantation for primary or secondary prevention were included in the study. Patients' clinical, electrocardiographic, 2D classic, and speckle tracking echocardiographic data were collected...
April 26, 2017: Echocardiography
https://www.readbyqxmd.com/read/28444182/ventricular-fibrillation-triggered-by-a-pacemaker-mediated-tachycardia-protection-algorithm
#7
Vincent Galand, Nathalie Behar, Raphaël P Martins
No abstract text is available yet for this article.
April 22, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28444176/-j-waves-induced-after-short-coupling-intervals-a-manifestations-of-latent-depolarization-abnormality
#8
Yoshifusa Aizawa, Masafumi Nakayama, Masahito Sato, Masaaki Okabe, Yoshiyasu Aizawa, Seiji Takatsuki, Keiichi Fukuda
Aims: To confirm the presence of tachycardia-induced slur or notch in the terminal portion of the QRS complexes in a general patient population. Methods and results: A tachycardia-induced J wave was defined as a slur or notch in the terminal portion of the QRS complexes newly induced at short RR intervals during atrial premature contractions (APCs) or atrial electrical stimulation in the electrophysiological study (EPS). Twenty-three out of 2000 patients with general diseases were involved...
April 24, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28442644/prediction-of-both-electrical-and-mechanical-reverse-remodeling-on-acute-electrocardiogram-changes-after-cardiac-resynchronization-therapy
#9
Chien-Ming Cheng, Chieh-Shou Su, Pesus Chou, Ying-Chieh Liao, Chi-Yen Wang, Jian-Rong Zhang, Yu-Cheng Hsieh, Tsu-Juey Wu, Yu-Wei Chen, Chi-Jen Weng, Keng-Hao Chang, Weihua Zhou, Guang-Uei Hung, Jin-Long Huang, Kenichi Nakajima
BACKGROUND: The development of both electrical reverse remodeling and mechanical reverse remodeling (ERR+MRR) after cardiac resynchronization therapy (CRT) implantation could reduce the incidence of lethal arrhythmia, hence the prediction of ERR+MRR is clinically important.Methods and Results:Eighty-three patients (54 male; 67±12 years old) with CRT >6 months were enrolled. ERR was defined as baseline intrinsic QRS duration (iQRSd) shortening ≥10 ms in lead II on ECG after CRT, and MRR as improvement in LVEF ≥25% on echocardiography after CRT...
April 22, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28442147/troubleshooter-in-electrical-storm-mechanical-unloading-leads-to-heart-rhythm-stabilization
#10
Johannes Mierke, Tobias Loehn, Christian Pfluecke, Karim Ibrahim
The electrical storm is a life-threatening situation which causes a complex antiarrhythmic treatment. We firstly report a rhythmological stabilization through mechanical unloading of the left ventricle in a health patient who developed electrical storm after endo- and epicardiac re-ablation and who previously underwent 27 unsuccessful defibrillations. No evidence for a specific etiology of the rhythm disturbances was found. After implantation of a percutaneous left ventricular assist device (pLVAD) a single additional defibrillation was needed to terminate ventricular fibrillation...
April 18, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28441850/-clinical-application-of-one-stage-operation-of-epicardial-permanent-pacemaker-implantation-and-cardiac-surgery
#11
C L Ren, S L Jiang, C S Xiao, R Wang, C Q Gao
Objective: To summarize the results and clinical application experience of one-stage operation of epicardial permanent pacemaker implantation and cardiac surgery. Methods: From November 2014 to July 2016, 15 patients (9 males and 6 females) with ages ranging from 50 to 73 (63.5±6.2) years requiring cardiac surgery with bradycardia underwent one-stage operation of epicardial permanent pacemaker implantation and cardiac surgery. All operations were performed under general anesthesia with chest median incision approach...
April 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28438722/propagation-of-meandering-rotors-surrounded-by-high-dominant-frequency-areas-in-persistent-atrial-fibrillation
#12
João Salinet, Fernando S Schlindwein, Peter Stafford, Tiago P Almeida, Xin Li, Frederique J Vanheusden, María S Guillem, G André Ng
BACKGROUND: identification of arrhythmogenic regions remains a challenge in persistent atrial fibrillation (persAF). Frequency and phase analysis allows identification of potential ablation targets. OBJECTIVE: This study aims to investigate the spatiotemporal association between dominant frequency (DF) and re-entrant phase activation areas. METHODS: Eight persAF patients undergoing first-time catheter ablation procedure were enrolled. A non-contact array catheter was deployed into the left atrium (LA) and 2048 AF electrograms (AEG) were acquired for 15 seconds following ventricular far-field cancellation...
April 21, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28438718/the-effect-of-50-compared-to-100-inspired-oxygen-fraction-on-brain-oxygenation-and-post-cardiac-arrest-mitochondrial-function-in-experimental-cardiac-arrest
#13
Annika Nelskyla, Jouni Nurmi, Milla Jousi, Alexey Schramko, Eero Mervaala, Giuseppe Ristagno, Markus B Skrifvars
BACKGROUND AND AIM: We hypothesised that the use of 50% compared to 100% oxygen maintains cerebral oxygenation and ameliorates the disturbance of cardiac mitochondrial respiration during cardiopulmonary resuscitation (CPR). METHODS: Ventricular fibrillation (VF) was induced electrically in anaesthetised healthy adult pigs and left untreated for seven minutes followed by randomisation to manual ventilation with 50% or 100% oxygen and mechanical chest compressions (LUCAS(®))...
April 21, 2017: Resuscitation
https://www.readbyqxmd.com/read/28433554/catheter-ablation-to-prevent-sudden-cardiac-death
#14
Josef Kautzner, Petr Peichl
Since ventricular arrhythmias are a common cause of sudden cardiac death (SCD), treatment for ventricular arrhythmias is the target area of interest in research field. Among different means to prevent ventricular arrhythmias, catheter ablation (CA) has emerged as an effective therapeutic method. CA can decrease the likelihood of SCD in the following arrhythmia categories: 1) idiopathic ventricular fibrillation (VF) that is usually triggered by premature ventricular beats originating in the Purkinje fibres; 2) VF in subjects with structural heart disease, especially after myocardial infarction, that is triggered by premature ventricular beats from surviving Purkinje fibres; 3) Brugada syndrome in which modification of an epicardial substrate in the right ventricular outflow tract might be the most promising strategy; 4) recurrent monomorphic ventricular tachycardias in the setting of structural heart disease; 5) ventricular preexcitation in which CA appears to be a method of choice in high risk patients, regardless of the presence or absence of symptoms...
April 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28433359/feasibility-of-profound-hypothermia-as-part-of-extracorporeal-life-support-in-a-pig-model
#15
Christoph Weiser, Wolfgang Weihs, Michael Holzer, Christoph Testori, Anne-Margarethe Kramer, Christoph Kment, Martin Stoiber, Michael Poppe, Christian Wallmüller, Peter Stratil, Michael Hoschitz, Anton Laggner, Fritz Sterz
OBJECTIVE: To investigate the feasibility of a refined aortic flush catheter and pump system to induce emergency preservation and resuscitation before extracorporeal cardiopulmonary resuscitation in a normovolemic cardiac arrest swine model simulating near real size/weight conditions of adults. METHODS: In this feasibility study, 8 female Large White breed pigs weighing 70 to 80 kg underwent ventricular fibrillation cardiac arrest for 15 minutes, followed by 4°C aortic flush (150 mL/kg for the brain; 50 mL/kg for the spine) via a new hardware ensued by resuscitation with extracorporeal cardiopulmonary resuscitation...
March 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28432528/conventional-acupuncture-for-cardiac-arrhythmia-a-systematic-review-of-randomized-controlled-trials
#16
Jing Liu, Si-Nai Li, Lu Liu, Kun Zhou, Yan Li, Xiao-Yun Cui, Jie Wan, Jin-Jin Lu, Yan-Chao Huang, Xu-Sheng Wang, Qian Lin
OBJECTIVE: To exam the effect and safety of conventional acupuncture (CA) on cardiac arrhythmia. METHODS: Nine medical databases were searched until February 2016 for randomized controlled trials. Heterogeneity was measured by Cochran Q test. Meta-analysis was conducted if I(2) was less than 85% and the characteristics of included trials were similar. RESULTS: Nine qualified studies involving 638 patients were included. Only 1 study had definitely low risk of bias, while 7 trials were rated as unclear and 1 as high...
April 22, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28432194/diagnostic-value-of-prehospital-ecg-in-acute-stroke-patients
#17
Tobias Bobinger, Bernd Kallmünzer, Markus Kopp, Natalia Kurka, Martin Arnold, Stefan Heider, Stefan Schwab, Martin Köhrmann
OBJECTIVE: To investigate the diagnostic yield of prehospital ECG monitoring provided by emergency medical services in the case of suspected stroke. METHODS: Consecutive patients with acute stroke admitted to our tertiary stroke center via emergency medical services and with available prehospital ECG were prospectively included during a 12-month study period. We assessed prehospital ECG recordings and compared the results to regular 12-lead ECG on admission and after continuous ECG monitoring at the stroke unit...
April 21, 2017: Neurology
https://www.readbyqxmd.com/read/28432166/the-lazarus-phenomenon-spontaneous-cardioversion-after-termination-of-resuscitation-in-a-scottish-hospital
#18
Benjamin Spowage-Delaney, Christopher T Edmunds, Jamie G Cooper
A 66-year-old man suffered a ventricular fibrillation cardiac arrest after an episode of chest pain. Despite advanced life support, his condition deteriorated; the situation was considered irrecoverable and resuscitation was discontinued. The patient was observed for about 5 min with irregular agonal gasping respirations evident but no palpable pulse. A gradual increase in the regularity of breathing pattern heralded the return of spontaneous circulation. An inferior myocardial infarction was diagnosed. Primary percutaneous coronary intervention was performed...
April 21, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28430698/the-right-ventricle-is-dilated-during-resuscitation-from-cardiac-arrest-caused-by-hypovolemia-a-porcine-ultrasound-study
#19
Rasmus Aagaard, Asger Granfeldt, Morten T Bøtker, Troels Mygind-Klausen, Hans Kirkegaard, Bo Løfgren
OBJECTIVES: Dilation of the right ventricle during cardiac arrest and resuscitation may be inherent to cardiac arrest rather than being associated with certain causes of arrest such as pulmonary embolism. This study aimed to compare right ventricle diameter during resuscitation from cardiac arrest caused by hypovolemia, hyperkalemia, or primary arrhythmia (i.e., ventricular fibrillation). DESIGN: Thirty pigs were anesthetized and then randomized to cardiac arrest induced by three diffrent methods...
April 20, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28430116/ghrelin-expression-and-significance-in-92-patients-with-atrial-fibrillation
#20
Tianyi Ma, Yujiang Su, Shijuan Lu, Moshui Chen, Jianghua Zhong, Zhihong Zhou, Dingjun Sun, Hui Yang, Xue Ao
OBJECTIVE: Ghrelin is a polypeptide that is closely associated with many cardiovascular diseases, such as hypertension, atherosclerosis, and heart failure. This article aims to understand the expression of ghrelin in patients with atrial fibrillation (AF). METHODS: A total of 182 patients with non-valvular heart diseases were recruited, among whom 92 had AF and 90 had sinus arrhythmia (SA). The serum ghrelin amount was tested by the ELASA method. Moreover, blood sugar, lipids, liver function, and renal function were tested...
April 10, 2017: Anatolian Journal of Cardiology
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