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Atrial tachycardial

U Boles, E Gul, L Fitzgerald, F Sadiq Ali, Christine Nolan, K Aldworth-Gaumond, D R Redfearn, A Baranchuk, B Glover, C Simpson, H Abdollah, K A Michael
BACKGROUND: Current algorithms and device morphology templates have been proposed in current Implantable Cardioverter-Defibrillators (ICDs) to minimize inappropriate therapies (ITS), but this has not been completely successful. AIM: Assess the impact of a deliberate strategy of using an atrial lead implant with standardized parameters; based on all current ICD discriminators and technologies, on the burden of ITS. METHOD: A retrospective single-centre analysis of 250 patients with either dual chamber (DR) ICDs or biventricular ICDs (CRTDs) over a (41...
October 27, 2017: Indian Pacing and Electrophysiology Journal
Yi-He Chen, Zhao-Yang Lu, Yin- Xiang, Jian-Wen Hou, Qian Wang, Hui Lin, Yi-Gang Li
Aims: Cryoablation is a promising alternative technique to RF ablation for treating paroxysmal AF with encouraging results. However, data about the efficacy and safety comparison between cryoablation and RF ablation is still lacking. Methods and results: We systematically search the PubMed, the Cochrane Library, MEDLINE and Google Scholar databases, and finally identify 16 eligible studies including 7195 patients (2863 for cryoablation; 4332 for RF ablation). Freedom from AF/atrial tachycardial replase is slightly higher in cryoablation than RF ablation during a median 12 months of follow-up, with no statistical significant (RR: 1...
May 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Chen-Xi Jiang, Jian-Zeng Dong, De-Yong Long, Rong-Hui Yu, Ri-Bo Tang, Cai-Hua Sang, Man Ning, Song-Nan Li, Xue-Yuan Guo, Xin Du, Rong Bai, Nian Liu, Jia-Hui Wu, Chang-Sheng Ma
BACKGROUND: Verification of bidirectional block is important for mitral isthmus (MI) ablation. However, recurrent perimitral reentry exists despite apparently MI block. OBJECTIVE: The purpose of this study was to identify and investigate the characteristics of the ridge breakthrough despite apparent bidirectional MI block and related reentry. METHODS: In 60 patients undergoing MI ablation and achieving the criteria of bidirectional block when assessed on the line, the pattern under differential pacing was reassessed at the ridge away from the line to check whether a breakthrough existed...
September 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Linzhong Zhang, Weizhu Ju, Guoying Su, Chen Bai, Guohai Su
No abstract text is available yet for this article.
January 2015: Zhonghua Xin Xue Guan Bing za Zhi
Ricardo O Escárcega, Mario Jiménez-Hernández, Mario Garcia-Carrasco, Juan Carlos Perez-Alva, Josep Brugada
The Brugada syndrome is an inherited cardiac disorder initially described in 1992 by Pedro and Josep Brugada, with variable electrocardiographic features characteristic of right bundle-branch block, persistent ST-segment elevation in the precordial leads (VI-V3) at rest and sudden cardiac death. The genetic abnormalities that cause Brugada syndrome have been linked to mutations in the ion channel gene SCN5A which encodes for the alpha-subunit of the cardiac sodium channel. A consensus conference report published in 2002 described the diagnostic criteria for the Brugada syndrome and described the three distinct types of Brugada syndrome...
December 2009: Acta Cardiologica
A Nikolov, M Filcheva, M Atanasova
We present a rare case of high-stage paroxysmal atrial tachycardia, clinically exhibit during pregnancy. Refers to 29-years-old pregnant woman, without preceding heart disease. With advancement of pregnancy tachycardial bout getting up daily, its severity increased gradually. At 24 weeks gestation, close to serial ponderous crisis, heart frequency exceed 200 heart beat per minute, expressing clinical manifestation of MAS-syndrome. The bout was not influenced on applied drug therapy. Restore to normal heart rhythm is reached difficult after electro-cardioversion ...
2007: Akusherstvo i Ginekologii︠a︡
Ana Rosa Alconero Camarero, Montserrat Carrera López, Carmen Muñoz García, Inmaculada Novo Robledo, Graciela Saiz Fernández
Cardiac arrhythmias are one of the most frequent complications in the immediate post-operatory period of cardiac surgery with extracorporeal circulation, this occurring in between 35% and 50% of the patients subjected to this therapeutic intervention. Among the causal factors, electrolytic alterations, direct surgical aggression on the heart tissue and alterations secondary to ischemic cell damage that is produced in the myocardial during extracorporeal circulation are found. Due to the frequency of appearance of arrhythmias, we decided to study them and know them in depth...
July 2005: Enfermería Intensiva
K Nandakumar, S K Bansal, Randhir Singh, S L Bodhankar, D P Jindal, Mohane S Coumar, R Balaraman, S H Bhardwaj
The in-vivo beta-adrenoreceptor antagonistic activity of test compounds DPJ 955 and DPJ 890 was assessed against beta-adrenoreceptor agonist (isoprenaline) induced tachycardia in anaesthetized rats. The selectivity to block isoprenaline responses on different &beta-adrenoreceptor subtypes (beta(1), beta(2) and beta(3)) of the test compounds was carried out on isolated rat right atria, isolated rat uterus and isolated rat colon preparations, respectively. Intravenous injection of isoprenaline alone in anaesthetized rats caused hypotension and tachycardia...
April 2005: Journal of Pharmacy and Pharmacology
No abstract text is available yet for this article.
February 21, 1952: La Revue du Praticien
Z A Szalay, W Skwara, H F Pitschner, I Faude, W P Klövekorn, E P Bauer
OBJECTIVE: Atrial fibrillation (AF) is the most common arrhythmia. However, its precise electrophysiologic mechanism is still not well understood. Chronic symptomatic atrial fibrillation resistant to medical therapy can successfully be treated by the Maze III procedure (M III). Several publications are dealing with alternative surgical techniques. This study describes technique and midterm results of a Mini-variant (Mini) of the Maze III procedure. METHODS: During a 48-month period we performed either a M III (group I = 7 patients) or a Mini-Maze operation (group II = 65 patients) in 33 males and 39 females with chronic symptomatic atrial fibrillation and additional cardiac pathology...
2000: Zeitschrift Für Kardiologie
B Brembilla-Perrot, L Jacquemin, D Beurrier, P Houplon, A Terrier de la Chaise, P Louis, L Bailly, V Berder, N Danchin
Programmed atrial stimulation is a technique increasingly used to assess different pathologies but the reproducibility of the results is totally unknown. The aim of this study was to determine its reproducibility. Two electrophysiological studies were undertaken without antiarrhythmic therapy in an interval of one to three months (average 18 months) in 48 patients. The programmed atrial stimulation used 1 and 2 extrastimuli delivered in sinus rhythm and then three paced rhythms (sinus cycle -10%, 600 ms, 400 ms)...
October 1997: Archives des Maladies du Coeur et des Vaisseaux
R Pichler, M Hatzl, H Huber, W Maschek, M Myslivecek, H Mustafa, M Drlicek
Thyrotropin (TSH-)producing adenomas of the anterior pituitary gland are the least frequently encountered ones and constitute a very rare cause of hyperthyroidism. The case is presented of a 58 year old male patient with a well-known history of hyperthyroidism over a period of at least 9 years growing goiter. Despite different forms of medical treatment he presented a constant clinical pattern consisting of restlessness and paroxysmal tachycardial atrial fibrillation. Laboratory findings revealed elevated levels of circulating thyroid hormones despite inadequately high levels of TSH...
April 25, 1997: Wiener Klinische Wochenschrift
J P Fauchier, L Fauchier, D Babuty, D Casset-Senon, J L Benne, P Cosnay
Idiopathic monomorphic ventricular tachycardia (IVT) represents 10% of all cases of VT and is usually observed in young subjects. The origin of the VT may be right ventricular, especially in the infundibulum, giving rise to runs of VT with inter-critical ventricular extrasystoles of the same morphology, or to paroxysmal sustained exercise-induced VT; they usually show left bundle branch block with right axis deviation: the triggering mechanism is probably a parasystole incompletely protected from the sinus rhythm (for the runs of VT) whereas the mechanism of maintenance is probably that of triggered repetitive activity (for the runs and paroxysmal forms of VT)...
July 1996: Archives des Maladies du Coeur et des Vaisseaux
M Beaughard, M Ferrier, C Labrid, J C Lamar, J Leboeuf, P Piris
Bepridil, a novel active compound for prophylactic treatment of anginal attacks, induced persistent bradycardia and a non-specific anti-tachycardial effect, the mechanisms of which were investigated in vitro and in vivo. In vitro perfusion of bepridil in the life-support medium for isolated sino-atrial tissue from rabbit heart, caused a reduction in action potential (AP) spike frequency (recorded by KCl microelectrodes) starting at doses of 5 X 10(-6) M. This effect was dose-dependent up to concentrations of 5 X 10(-5) M, whereupon blockade of sinus activity set in...
February 1982: British Journal of Pharmacology
H J Duck, W Hutschenreiter, H Pankau, B Krosse, H Trenckmann
For the reduction of the functional obstruction of the left-ventricular outflow in hypertrophic obstructive cardiomyopathy since 1978 in selected cases conventional VAT cardiac pacemakers with shortened AV retardation time have been implanted. On the basis of 4 casuistics the insufficient adaptation of these systems to unexpectedly appearing disturbances of the cardiac rhythm is demonstrated. Thus already extreme sinus bradycardias lead to parasystole by the unchangeably given asynchronous basic frequency of the pacemakers...
December 15, 1984: Zeitschrift Für die Gesamte Innere Medizin und Ihre Grenzgebiete
H Volkmann, U Laurer, H Kühnert, R Paliege
In 12 of 23 patients with atrial flutter, who were cardioversed by means of electric stimulation techniques and underwent a regular after-examination, a sinus rhythm was still existing 24 months after regularization. When these long-term results which in comparison to the late results are more favourable after electroshock cardioversion are interpreted apart from the different selection of patients must be taken into consideration that the rate of immediate success of about 50% was distinctly lower than in the DC-shock cardioversion...
October 15, 1984: Zeitschrift Für die Gesamte Innere Medizin und Ihre Grenzgebiete
P Mikhaĭlov
This kind of ventricular tachycardia presents a special type of tachycardia and the diagnostics is of particular importance in this case. It was described by French authors in 1970 during bradycardia and especially during complete AV block with low ventricular frequency. Arrhythmia present at tachycardial form of atrial flutter, and its treatment with electro-stimulation and sinus rhythm restoration are described.
1984: Vŭtreshni Bolesti
H H Wolter, H Walther
No abstract text is available yet for this article.
November 1965: Der Internist
R Wenger, H Karobath, J Slany
No abstract text is available yet for this article.
September 17, 1966: Wiener Medizinische Wochenschrift
A Weidner
No abstract text is available yet for this article.
June 6, 1969: Medizinische Klinik
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