keyword
MENU ▼
Read by QxMD icon Read
search

atrial ventricular block

keyword
https://www.readbyqxmd.com/read/28432194/diagnostic-value-of-prehospital-ecg-in-acute-stroke-patients
#1
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/28429217/adrenoceptors-in-dopaminergic-regulation-of-rat-myocardial-contractility-in-rats-during-ontogeny
#2
G A Bilalova, F G Sitdikov, N B Dikopol'skaya, M V Shaikhelislamova, T L Zefirov
The effects of different dopamine concentrations on contractility of myocardium with blocked α- or β-adrenoceptors were examined in vitro in 21- and 100-day old rats. In myocardial strips with blocked α-adrenoceptors, dopamine (10(-5) M) increased the right atrial contractile force. By contrast, this neurotransmitter (10(-9)-10(-5) M) reduced the contractile force of atrial and ventricular strips with blocked β-adrenoceptors.
April 20, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28416514/optical-mapping-approaches-on-muscleblind-like-compound-knockout-mice-for-understanding-mechanistic-insights-into-ventricular-arrhythmias-in-myotonic-dystrophy
#3
Chung-Chuan Chou, Po-Cheng Chang, Yi-Chia Wei, Kuang-Yung Lee
BACKGROUND: Cardiac arrhythmias are common causes of death in patients with myotonic dystrophy (dystrophia myotonica [DM]). Evidence shows that atrial tachyarrhythmia is an independent risk factor for sudden death; however, the relationship is unclear. METHODS AND RESULTS: Control wild-type (Mbnl1(+/+); Mbnl2(+/+) ) and DM mutant (Mbnl1(-/-); Mbnl2(+/-) ) mice were generated by crossing double heterozygous knockout (Mbnl1(+/-); Mbnl2(+/-) ) mice. In vivo electrophysiological study and optical mapping technique were performed to investigate mechanisms of ventricular tachyarrhythmias...
April 17, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28399044/red-meat-consumption-and-cardiovascular-target-organ-damage-from-the-strong-heart-study
#4
Bernhard Haring, Wenyu Wang, Amanda Fretts, Daichi Shimbo, Elisa T Lee, Barbara V Howard, Mary J Roman, Richard B Devereux
OBJECTIVE: The aim of this study was to investigate whether red meat consumption is related to changes in left ventricular mass (LVM), left atrial diameter and carotid atherosclerosis in American Indians. METHODS: We prospectively analyzed echocardiographic and carotid ultrasound data of 1090 adults aged 40 years and older enrolled in the Strong Heart Family Study who were free of cardiovascular disease at baseline - 535 (49%) were hypertensive and 555 (51%) participants were nonhypertensive...
April 10, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28398556/prognosis-associated-with-redo-cardiac-resynchronization-therapy-following-complete-device-and-lead-extraction-due-to-device-related-infection
#5
Martin Seifert, Viviane Moeller, Anita Arya, Thomas Schau, Frank Hoelschermann, Christian Butter
Aims: An increase in the number of cardiac resynchronization therapy (CRT) device implantations worldwide has led to a consequent increase in the number of infections associated with the device, making extraction of the CRT device inevitable. Redo CRT implantation after treatment and recovery following device extraction is challenging. This study aimed to evaluate the success rate, complications, and long-term prognosis of redo CRT implantation, including the rates of subclavian, cava, and coronary sinus (CS) vein thrombosis as well as re-infection...
April 6, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28386917/epidemiology-and-one-year-outcomes-in-patients-with-chronic-heart-failure-and-preserved-mid-range-and-reduced-ejection-fraction-an-analysis-of-the-esc-heart-failure-long-term-registry
#6
Ovidiu Chioncel, Mitja Lainscak, Petar M Seferovic, Stefan D Anker, Maria G Crespo-Leiro, Veli-Pekka Harjola, John Parissis, Cecile Laroche, Massimo Francesco Piepoli, Candida Fonseca, Alexandre Mebazaa, Lars Lund, Giuseppe A Ambrosio, Andrew J Coats, Roberto Ferrari, Frank Ruschitzka, Aldo P Maggioni, Gerasimos Filippatos
AIMS: The objectives of the present study were to describe epidemiology and outcomes in ambulatory heart failure (HF) patients stratified by left ventricular ejection fraction (LVEF) and to identify predictors for mortality at 1 year in each group. METHODS AND RESULTS: The European Society of Cardiology Heart Failure Long-Term Registry is a prospective, observational study collecting epidemiological information and 1-year follow-up data in 9134 HF patients. Patients were classified according to baseline LVEF into HF with reduced EF [EF <40% (HFrEF)], mid-range EF [EF 40-50% (HFmrEF)] and preserved EF [EF >50% (HFpEF)]...
April 6, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28382491/tbx18-dependent-differentiation-of-brown-adipose-tissue-derived-stem-cells-toward-cardiac-pacemaker-cells
#7
Lei Chen, Zi-Jun Deng, Jian-Sheng Zhou, Rui-Juan Ji, Xi Zhang, Chuan-Sen Zhang, Yu-Quan Li, Xiang-Qun Yang
A cell-sourced biological pacemaker is a promising therapeutic approach for sick sinus syndrome (SSS) or severe atrial ventricular block (AVB). Adipose tissue-derived stem cells (ATSCs), which are optimal candidate cells for possible use in regenerative therapy for acute or chronic myocardial injury, have the potential to differentiate into spontaneous beating cardiomyocytes. However, the pacemaker characteristics of the beating cells need to be confirmed, and little is known about the underlying differential mechanism...
April 5, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28381122/argon-exposure-induces-postconditioning-in-myocardial-ischemia-reperfusion
#8
Sandrine Lemoine, Katrien Blanchart, Mathieu Souplis, Adrien Lemaitre, Damien Legallois, Laurent Coulbault, Christophe Simard, Stéphane Allouche, Jacques H Abraini, Jean-Luc Hanouz, René Rouet, Laurent Sallé, Romain Guinamard, Alain Manrique
BACKGROUND AND PURPOSE: Cardioprotection against ischemia-reperfusion (I/R) damages remains a major concern during prehospital management of acute myocardial infarction. Noble gases have shown beneficial effects in preconditioning studies. Because emergency proceedings in the context of myocardial infarction require postconditioning strategies, we evaluated the effects of argon in such protocols on mammalian cardiac tissue. EXPERIMENTAL APPROACHES: In rat, cardiac I/R was induced in vivo by transient coronary artery ligature and cardiac functions were evaluated by magnetic resonance imaging...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28373784/left-ventricular-noncompaction-a-rare-form-of-cardiomyopathy-revelation-modes-and-predictors-of-mortality-in-adults-through-23-cases
#9
Iliyasse Asfalou, Sanae Boulaamayl, Maha Raissouni, Najat Mouine, Mohamed Sabry, Jamal Kheyi, Nawal Doghmi, Aatif Benyass
OBJECTIVES: To describe modes of clinical presentation and echocardiographic, angiographic, and rhythmic features, and prognostic characteristics of left ventricular noncompaction cardiomyopathy (LVNC) in North African adults, through one of the first series in Morocco. BACKGROUND: LVNC is a rare congenital disorder, described for the first time by Engberding in 1984. The suspected diagnosis in thromboembolic, hemodynamic, or rhythm events requires both echocardiography and cardiovascular magnetic resonance (CMR)...
April 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28371908/acute-right-ventricular-resynchronization-improves-haemodynamics-in-children-after-surgical-repair-of-tetralogy-of-fallot
#10
Pavel Vojtovic, Filip Kucera, Peter Kubuš, Roman Gebauer, Tomáš Matejka, Tomáš Tláskal, Miroslav Ložek, Jan Kovanda, Jan Janoušek
Aims: Right bundle branch block is associated with right ventricular (RV) electromechanical dyssynchrony, which may contribute to acute haemodynamic impairment after repair of tetralogy of Fallot (ToF). We sought to evaluate the effects of RV resynchronization on haemodynamics and tissue oxygenation during the first 24 h after surgery. Methods and results: Arterial pressures, cardiac output, and tissue oxygenation were measured in 28 consecutive patients (median age 10...
March 23, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28340057/long-term-outcome-of-pulmonary-vein-isolation-in-patients-with-paroxysmal-atrial-fibrillation-and-brugada-syndrome
#11
Giacomo Mugnai, Burak Hünük, Erwin Ströker, Diego Ruggiero, Hugo Enrique Coutino-Moreno, Ken Takarada, Valentina De Regibus, Rajin Choudhury, Juan Pablo Abugattas de Torres, Darragh Moran, Saverio Iacopino, Pasquale Filannino, Giulio Conte, Juan Sieira, Jan Poelaert, Stefan Beckers, Pedro Brugada, Carlo de Asmundis, Gian-Battista Chierchia
Aims: The therapeutical management of atrial fibrillation (AF) in the setting of Brugada syndrome (BS) might be challenging as many antiarrhythmic drugs (AADs) with sodium channel blocking properties might lead to to the development of ventricular arrhythmias. This study sought to evaluate the clinical outcome in a consecutive series of patients with BS having undergone pulmonary vein (PV) isolation by means of radiofrequency (RF) or cryoballoon (CB) ablation and the efficacy of catheter ablation for preventing inappropriate interventions delivered by implantable cardioverter defibrillators (ICD) on a 3-year follow up...
March 9, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339570/frequency-of-different-electrocardiographic-abnormalities-in-a-large-cohort-of-spanish-workers
#12
Jorge Rodríguez-Capitán, Ana Fernández-Meseguer, José Manuel García-Pinilla, Eva Calvo-Bonacho, Manuel Jiménez-Navarro, Teresa García-Margallo, Fernando Cabrera-Bueno, Ignacio Echeverria-Lucotti, Juan José Gómez-Doblas, Eduardo De Teresa-Galván
Aims: Our aim was to describe the electrocardiographic findings of a large sample of Spanish workers from several different employment sectors. Methods and results: Between May 2008 and November 2010, 13 495 consecutive 12-lead resting electrocardiograms (ECGs) were obtained during health examinations of working adults aged 16-74 years in 5 cities in different regions of Spain. Of those, 13 179 ECGs suitable for interpretation were included in this study. All tracings were classified by the same cardiologist, according to the Minnesota Code criteria...
October 6, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28331489/reversible-atrial-fibrillation-following-crotalinae-envenomation
#13
Dan Quan, Kenneth Zurcher
BACKGROUND: Cardiotoxicity is a documented complication of Crotalinae envenomation. Reported cardiac complications following snake envenomation have included acute myocardial infarction, electrocardiogram abnormalities and arrhythmias. Few reports exist describing arrhythmia induced by viper envenomation and to our knowledge none describe arrhythmia induced by Crotalinae envenomation. This report concerns the first known case of atrial fibrillation precipitated by rattlesnake bite. CASE PRESENTATION: A 73-year-old Caucasian man with a past medical history of hypertension, hyperlipidemia, type 1 diabetes mellitus, and a baseline first-degree atrioventricular block presented to the emergency department following a rattlesnake bite to his left lower leg...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28294644/electrocardiogram-changes-and-atrial-arrhythmias-in-individuals-carrying-sodium-channel-scn5a-d1275n-mutation
#14
Sari U M Vanninen, Kjell Nikus, Katriina Aalto-Setälä
INTRODUCTION: The cardiac sodium channel SCN5A regulates atrioventricular and ventricular depolarization as well as cardiac conduction. Patients with cardiac electrical abnormalities have an increased risk of sudden cardiac death (SCD) and cardio-embolic stroke. Optimal management of cardiac disease includes the understanding of association between the causative mutations and the clinical phenotype. A 12-lead electrocardiogram (ECG) is an easy and inexpensive tool for finding risk patients...
March 15, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28292752/fascicular-ventricular-tachycardia-originating-from-papillary-muscles-purkinje-network-involvement-in-the-reentrant-circuit
#15
Yuki Komatsu, Akihiko Nogami, Kenji Kurosaki, Itsuro Morishima, Keita Masuda, Tomoya Ozawa, Takashi Kaneshiro, Yuichi Hanaki, Yasutoshi Shinoda, Ahmed Karim Talib, Shinya Kowase, Yukio Sekiguchi, Kazutaka Aonuma
BACKGROUND: Verapamil-sensitive fascicular ventricular tachycardia (FVT) has been demonstrated to be a reentrant mechanism using the Purkinje network as a part of its reentrant circuit. Although the papillary muscles (PMs) are implicated in arrhythmogenic structure, reentrant FVT originating from the PMs has not been well defined. METHODS AND RESULTS: We studied 13 patients in whom FVT was successfully eliminated by ablation at the posterior PMs (n=8; PPM-FVT) and anterior PMs (n=5; APM-FVT)...
March 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28287212/-the-pacemaker-and-implantable-cardioverter-defibrillator-registry-of-the-italian-association-of-arrhythmology-and-cardiac-pacing-annual-report-2015
#16
Alessandro Proclemer, Massimo Zecchin, Antonio D'Onofrio, Giuseppe Boriani, Giovanni Luca Botto, Domenico Facchin, Luca Rebellato, Marco Ghidina, Giulia Bianco, Emanuela Bernardelli, Elsa Pucher, Dario Gregori
BACKGROUND: The pacemaker (PM) and implantable cardioverter-defibrillator (ICD) Registry of the Italian Association of Arrhythmology and Cardiac Pacing (AIAC) monitors the main epidemiological data in real-world practice. The survey for the 2015 activity collects information about demographics, clinical characteristics, main indications for PM/ICD therapy and device types from the Italian collaborating centers. METHODS: The Registry collects prospectively national PM and ICD implantation activity on the basis of European cards...
January 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28217309/qrs-duration-versus-morphology-and-survival-after-cardiac-resynchronization-therapy
#17
Mand J H Khidir, Victoria Delgado, Nina Ajmone Marsan, Martin J Schalij, Jeroen J Bax
AIMS: The prognostic implications of QRS duration and morphology in heart failure patients treated with cardiac resynchronization therapy (CRT) remains debated. The present evaluation investigated the association between QRS duration (<150 vs. ≥150 ms) and QRS morphology (left bundle brand block [LBBB] vs. non-LBBB) and long-term prognosis of a large cohort of unselected heart failure patients treated with CRT according to contemporary guidelines. METHODS AND RESULTS: Of 973 heart failure patients treated with CRT (mean age 66...
February 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28203542/robotic-trans-atrial-and-trans-mitral-ventricular-septal-resection
#18
REVIEW
W Randolph Chitwood
Localized ventricular septal hypertrophy, also known as idiopathic hypertrophic subaortic stenosis or idiopathic hypertrophic subaortic septal obstruction (IHSS), can create severe ventricular outflow obstruction. This often results in a high sub-aortic pressure gradient with potentially lethal symptoms. In 1960, Braunwald described the hemodynamic characteristics of IHSS, and thereafter, Morrow developed a trans-aortic approach to resect a large part of the ventricular septum, enlarging the outflow tract. The Morrow operation has remained the gold standard for surgically treating this pathology...
January 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28202628/effects-of-upgrade-versus-de-novo-cardiac-resynchronization-therapy-on-clinical-response-and-long-term-survival-results-from-a-multicenter-study
#19
Mate Vamos, Julia W Erath, Zsolt Bari, Denes Vagany, Sven P Linzbach, Tatsiana Burmistrava, Carsten W Israel, Gabor Z Duray, Stefan H Hohnloser
BACKGROUND: Benefits of cardiac resynchronization therapy (CRT) on morbidity and mortality in selected patients are well known. Although the number of upgrade procedures from single- or dual-chamber devices to CRT is increasing, there are only sparse data on the outcomes of upgrade procedures compared with de novo CRT. This study aimed to evaluate clinical response and survival in patients receiving de novo versus upgrade CRT defibrillator therapy. METHODS AND RESULTS: Prospectively collected outcome data were compared in patients undergoing de novo or upgrade CRT defibrillator implantation at 3 implant centers in Germany and Hungary...
February 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28197280/predictors-of-permanent-pacemaker-implantation-after-coronary-artery-bypass-grafting-and-valve-surgery-in-adult-patients-in-current-surgical-era
#20
Bandar Al-Ghamdi, Yaseen Mallawi, Azam Shafquat, Alexandra Ledesma, Nadiah AlRuwaili, Mohamed Shoukri, Shahid Khan, Aly Al Sanei
BACKGROUND: Permanent pacemaker (PPM) implantation after cardiac surgery is required in 0.4-6% of patients depending on cardiac surgery type. PPM implantation in the early postoperative period may reduce morbidity and postoperative hospital stay. We performed a retrospective review of electronic medical records of adult patients with coronary artery bypass grafting (CABG), valve surgery, or both, over a 3-year period. Our aim was to identify predictors of PPM requirements and PPM dependency on follow-up in the current surgical era...
August 2016: Cardiology Research
keyword
keyword
90965
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"