supraventricular tachycardia

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..This review provides a systematic approach to the evaluation, diagnosis, localization, and elimination of left atrial tachycardias occurring after atrial fibrillation ablation...

Several different mechanisms are responsible for paroxysmal supraventricular tachycardia in children. Different forms of tachycardia occur at different age...

To assess changes of success rate, fluoroscopy time, and complication rate for six supraventricular tachycardia pathways/ mechanisms, data from the Pediatric Radiofrequency Catheter Ablation Registry were grouped into two eras (1991-1995; ..

Although supraventricular tachycardia (SVT) can be identified from any lead of the bedside monitor, the mechanism of tachycardia is not always obvious...

Reentrant supraventricular tachycardia (SVT) is the most common arrhythmia in infants. There are few predictors as to which patients will have recurrent or refractory SVT...

As many as 1 in 250 children experience supraventricular tachycardia (SVT), but its presentation is often vague and its symptoms mistakenly attributed to other common pediatric conditions...

The role of radiofrequency catheter ablation (RFCA) of supraventricular tachycardia (SVT) in infants and toddlers is still unclear.

AIMS: To determine (a) the age distribution at first clinical supraventricular tachycardia (SVT) presentation; (b) the time interval between first clinical suspicion and electrocardiographic proof of SVT; c) the most indicative symptoms ..

The objective of this study was to develop age-specific dosage guidelines for sotalol in children with supraventricular tachycardia (SVT) based on a population pharmacokinetic covariate analysis, clinical trial simulations, and ..

..To assess recovery pattern of left ventricular function secondary to incessant tachycardia after radiofrequency ablation in a group of infants and children...

..Discrete 0-10 scales are used. Unlike SF-36, U22 can be used in individual patients...

..This article will review existing data and speculate as to possible future roles for intracardiac echocardiography in interventional electrophysiology...

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..Propofol and remifentanil total intravenous anaesthesia resulted in haemodynamic stability and delivery of a healthy baby who breathed spontaneously after two minutes...

..fMCG), we characterize for the first time the electrophysiological patterns of initiation and termination of reentrant fetal supraventricular tachycardia (SVT), the most common form of life-threatening fetal arrhythmia.

We present four cases of supraventricular tachycardia in pregnancy of varied aetiology...

b>Supraventricular tachycardia (SVT) is the most common tachyarrhythmia that necessitates treatment in children...

..The patient reported in this article presented with paroxysmal supraventricular tachycardia. Echocardiography is the procedure of choice to establish diagnosis...

..Specifically, we wished to test the hypothesis that the incidence of postoperative supraventricular dysrhythmias is dependent on the magnitude of pulmonary resection...

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The purpose of this study was to define the incidence, mechanisms, and management, including catheter ablation, of supraventricular tachycardia (SVT) in a large series of patients after orthotopic heart transplantation (OHT).

..However, pathological hemostatic changes during the paroxysmal supraventricular tachycardia (PSVT) have not yet been elucidated...

..The efficacy of RFA for treating various arrhythmia mechanisms was evaluated based on a summary of published case reports...

..The aim of this study was to report on the safety and efficacy of a new cryoablation system for treatment of all SVTs...

..in whom venoarterial ECLS was used to provide support for cardiogenic shock secondary to intractable supraventricular tachycardia. In both cases, the arrhythmia terminated once bypass was established...

..Four patients with elevated troponin levels after supraventricular tachycardia without evidence of coronary artery disease and very low risk scores for acute coronary syndrome are ..

To review the diagnosis, treatment, and outcome of fetal atrial flutter compared with supraventricular tachycardia.

The purpose of this prospective study was to quantitate the diagnostic value of several tachycardia features and pacing maneuvers in patients with paroxysmal supraventricular tachycardia (PSVT) in the electrophysiology laboratory.

Paroxysmal supraventricular tachycardia (PSVT) is defined as a regular rapid heart beat, which initiates and terminates suddenly...

Persistent fetal supraventricular tachycardia (SVT) with more than 210 bpm frequently leads to congestive heart failure...

..A higher amount and duration of accelerated junctional rhythm during radiofrequency applications may be an additional marker of successful ablation...

..The aim of this study was to assess patient satisfaction in patients with supraventricular tachycardia following catheter ablation on an outpatient basis.

..She had an incessant supraventricular tachycardia, which was not reversible with electrical cardioversion...

..This retrospective review of present practice of administration of adenosine by paediatricians shows that current guidelines recommend starting doses that are effective in only 9% of infants and children...

..CONCLUSION: Elevated concentrations of fine and ultrafine particle increased the risk of arrhythmia in men with coronary heart disease...

We evaluated 39 patients >45 years old with paroxysmal supraventricular tachycardia (SVT), 21 of whom had ST-segment depression during SVT...

No prior studies have systematically investigated the diagnostic value of cycle length (CL) variability in differentiating the mechanism of paroxysmal supraventricular tachycardia (PSVT).

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..This study was done to answer the question if intravenous application of 18 mg adenosine is superior to 12 mg adenosine for the termination of supraventricular tachycardias...

..Surgical intervention for atrial flutter/fibrillation yields freedom from late recurrence in 75% of cases...

..BACKGROUND: The CryoCath Technologies Freezor catheter has been used successfully for cryoablation of supraventricular tachycardia (SVT), but has not been evaluated in a large clinical trial...

..Clinical, electrophysiologic, and RFA data for all patients < or =20 kg who underwent RFA for supraventricular tachycardia between January 1994 and January 2003 were reviewed...

..The purpose of this study was to investigate the results of the RF catheter ablation of SVTs in pediatric patients...

..METHODS: We present a series of patients presenting to our unit with raised troponin I and supraventricular tachycardia (SVT) that prompted coronary angiography...

..The purpose of this study was to evaluate the occurrence of twin AV node according to anatomical subgroups, and to determine its relation to tachycardia...

Radiofrequency catheter ablation (RCA) of supraventricular tachycardia (SVT) in children is highly successful but requires exposure to radiation. Nonfluoroscopic mapping systems may significantly reduce fluoroscopy time.

..CONCLUSIONS: In children with structurally normal hearts, a previously documented SVT, absence of an accessory pathway and noninducibility of SVT during EP study, empirical slow pathway ablation appears to be justified...

..A multicenter prospective study was performed to assess the results and risks associated with radiofrequency ablation in children. This report focuses on recurrences following initially successful ablation...

We report a patient with incessant, exercise-limiting supraventricular tachycardia on the ventricular level and a constant 1:2 atrioventricular relation...

..These tachycardias are diverse; as such, the pathophysiology behind each form of WCT includes toxic, metabolic, and conduction system dysfunction mechanisms...

b>Supraventricular tachycardia (SVT) is common in surgical patients with congenital heart disease...

..ICE-guided transseptal approach might be a promising modality for TCRFA of LSAP...

..The present multicentre, open study aimed to evaluate the performance of a dual-chamber detection algorithm, the Atrial View algorithm, incorporated in a dual-chamber ICD, the Ventak AV (Guidant Inc., St. Paul, Minnesota, USA)...

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To assess the efficacy of flecainide in the intrauterine treatment of fetal supraventricular tachycardia (SVT) with 1 : 1 atrioventricular conduction.

b>Supraventricular tachycardia is the most frequent form of symptomatic tachydysrhythmia in children. Neonates and infants with paroxysmal supraventricular tachycardias generally present with signs of acute congestive heart failure...

Digoxin has been an effective treatment for fetal supraventricular tachycardia (SVT), but second-line therapy remains more controversial. Thirty-seven cases of fetal SVT were identified that received digoxin as first-line therapy...

..We sought to determine whether early prophylaxis with an L -type calcium channel blocker reduces the incidence and morbidity associated with atrial fibrillation/flutter and supraventricular tachyarrhythmia after major thoracic operations...

To study the fetal response to prenatal therapy in non-hydropic fetuses with supraventricular tachycardia (SVT) as a function of fetal haemodynamic status at presentation. Study Design: Retrospective study.

..considered to be the treatment of choice in patients with ventricular dysfunction related to incessant supraventricular tachycardia. However, reservations regarding its use in infants and children prompted us to try alternative ..

We report a patient with a complex nonreentrant supraventricular tachycardia because of double ventricular response resulting from antegrade dual atrioventricular (AV) nodal pathways...

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..The mechanism and clinical manifestation of SVTs, which is essential to their correct diagnosis, is reviewed. The therapeutic management of SVTs, including acute and chronic drug therapy and catheter ablation, is discussed also...

..To investigate the prevalence of underlying, inducible supraventricular arrhythmias in patients referred for ablation of atrial fibrillation (AF)...

..In paroxysmal supraventricular tachycardia, vagal stimulation maneuvers should be attempted first...

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..As part of the latter objective, recent clinical studies documenting the use of radiofrequency catheter ablation and cryo catheter ablation for AFl are presented and their results briefly discussed...

..of succeeding atrial activation by a ventricular extrastimulus (VES) on His refractoriness during supraventricular tachycardia (SVT) has been used as evidence of an accessory pathway (AP), the sensitivity of this method is ..

..The purpose of this study was to describe the surface electrocardiogram (ECG) morphology of common atrial tachycardias (ATs) that occur after pulmonary vein (PV) isolation...

..Success rates for ablation are highest for typical atrial flutter and higher than antiarrhythmic therapy for most atrial tachycardias...

..This arrhythmia is frequently referred to as "left atrial flutter," but the mechanism and best ablation strategy have not been determined...

..The 4 accessory pathways and the slow A-V nodal pathway were successfully ablated, and the patient has been asymptomatic for 12 months without taking antiarrhythmic drugs...

..The approach to the tachydysrhythmia should begin with distinguishing sinus from non-sinus rhythms, then assessing QRS complex width and regularity. This article review tachydysrhythmias...

..When performing para-Hisian pacing, the pacing spike sometimes captures only the His bundle, which we named "pure" Hisian pacing (Hc)...

..The differential diagnoses of posterior fascicular ventricular tachycardia and supraventricular tachycardia with aberrancy will also be discussed.

..The aim of this study was to report our experience on the effectiveness and safety of catheter cryoablation performed in "critical areas" to treat a large cohort of patients with supraventricular arrhythmias...

..The patient reported no intraoperative recall despite BIS values in the high 70s. This case reinforces that BIS values require interpretation and can only be relevant to the circumstances of the individual case...

..Subsequently, the patient was free of tachycardias during a 36 month follow-up and the child is healthy...

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..Catheter ablation directed at "source isolation" is effective in eliminating focal atrial tachycardia in patients with CHD...

..b>Supraventricular tachycardia is the most common symptomatic pediatric tachyarrhythmia...

The authors report the case of a 70 year old woman with frequent attacks of supraventricular tachycardia resistant to antiarrhythmic therapy. The tachycardia was irregular with predominantly normal QRS complexes...

..The concordance with surface ECG changes is not perfect and the distinction between flutter and tachycardia often depends on the frequency of the tachycardia and the leads studied...

..There is discussion of tachyarrhythmias, both wide and narrow, bradyarrhythmias, and management of pacemakers and defibrillators. Common pitfalls and concerns are addressed...

..Idiopathic ventricular tachycardia without structural heart disease usually shows a benign course and has a good prognosis...

..Control of the ventricular rate by radiofrequency modification of atrioventricular conduction is the treatment of choice for chronic atrial fibrillation...

..Pediatric and pregnant patients are, in general, treated the same as adults. Several case examples and EKGs are presented...

..Adenosine is a commonly used therapeutic intravenous drug for treatment of supraventricular tachycardia; it has been frequently reported to cause dyspnea...

..participate in a wide variety of atrial arrhythmias including brady-tachy syndrome, atrial tachycardia, supraventricular tachycardia and atrial fibrillation...

..A total of 450 pediatric patients will be enrolled prospectively and evaluated both before ablation of supraventricular tachycardia and at intervals following ablation with clinical history and examination, electrocardiogram, 24-hour ..

..Radiofrequency ablation, which successfully treats supraventricular tachycardia, is not successful at treating ventricular tachycardia because conventional RF ablation catheters ..

..echo/Doppler criteria could be used for electrocardiographic interval assessment in the neonate with supraventricular tachycardia (SVT) undergoing electrophysiologic testing...

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..The trial primary composite is total mortality plus nonfatal reinfarction. Patients enrolled in the trial will be followed for two years. The sample size will be 1124 patients who will be enrolled in 60 sites. ..

..Finally, our patient-specific computational models are clinically relevant, and will thus provide a resource for further hypothesis testing in AF. ..

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..To demonstrate convincingly the feasibility of recording the spontaneous FMEG in utero; and 4. To develop signal processing methods to reduce interference from the fetal magnetocardiogram and other sources of noise. ..

..Isoform expression will be determined by in situ hydridization. The proposed studies will provide new insights into ion channel function, their regulation and possible basis for cardiac arrhythmias. ..

..This structured approach will ensure the successful completion of this project and, in this way, the development of the applicant into an independent clinician-investigator. ..

..Finally, our patient-specific computational models are clinically relevant, and will thus provide a resource for further hypothesis testing in AF. ..

..The results of this study should clearly define the clinical utility of preoperative steroids and help determine the mechanisms for any observed effect. (End of Abstract). ..

..Lay summary) Infections are a leading cause of serious illness in babies. Dr. Wade will perform research to determine how to optimize the dosing of drugs used to treat infections caused by yeast and the influenza (flu) virus. ..

..Finally, our patient-specific computational models are clinically relevant, and will thus provide a resource for further hypothesis testing in AF. ..

..Development of targeted therapy for childhood cancer offers the prospect of more efficacious and less toxic therapeutics. ..

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