Radiofrequency Ablation Of Supraventricular Tachycardia Research Articles

Assessment of the effect of cardiac rhythm and conduction disorders on the course and outcome of pregnancy: data of the Arrhythmia Center

Aim. To assess the effect of cardiac rhythm and conduction disorders on the course and outcome of pregnancy against the background of treatment. Material and methods . We analyzed 44 case histories of pregnant women examined in the department of surgical treatment of severe cardiac rhythm and conduction disorders during the period from 2012 to 2017 The patients’ age averaged 31,2±5,04 years. The survey was conducted during pregnancy from 12 to 37 weeks (average 28,0±6,4). Results. In most cases, rhythm disorders had idiopathic nature (57%), and in the remaining patients, diseases of the cardiovascular system were verified. Rhythm disorders before pregnancy were reported in 33 (75%) women. In two cases, ventricular tachycardia was hemodynamically significant. Therefore radiofrequency ablation was performed on 26 and 27 weeks of pregnancy. Radiofrequency ablation of supraventricular tachycardia was performed in three patients at the 27th, 29th and 31st week of pregnancy. One patient had an implanted pacemaker due to an atrioventricular block. Conclusion. Rhythm disorders observed in the patients did not require termination of the pregnancy. Antiarrhythmic therapy, prescribed for symptomatic, hemody-namically significant and life-threatening disorders, and surgical treatment made it possible to effectively manage pregnant women before delivery. Most patients had delivery on time, rhythm disorders in labor were not observed. Newborns had high Apgar scores.

Complications of Radiofrequency Ablation for Supraventricular Tachycardia in the Wolff-Parkinson-White Syndrome Associated With Noncompaction Cardiomyopathy

Described herein is a 52-year-old man with Wolff-Parkinson-White syndrome and noncompaction cardiomyopathy who underwent 4 sternotomies to correct complications of 3 ablation procedures (2 open) for recurring supraventricular tachycardia, mitral valve repair for a damaged mitral valve during the third radiofrequency ablation procedure, and finally orthotopic heart transplantation.

First experience with zero-fluoroscopic ablation for supraventricular tachycardias using a novel impedance and magnetic-field-based mapping system

AimsZero- and near-zero-fluoroscopic ablation techniques reduce the harmful effects of ionizing radiation during invasive electrophysiology procedures. We aimed to test the feasibility and safety of a zero-fluoroscopic strategy using a novel integrated magnetic and impedance-based electroanatomical mapping system for radiofrequency ablation (RFA) of supraventricular tachycardias (SVTs).MethodsWe retrospectively studied 92 consecutive patients undergoing electrophysiology studies with/without RFA for supraventricular tachycardia (SVT) performed by a single operator at a single center. The first 42 (Group 1) underwent a conventional fluoroscopic-guided approach and the second 50 (Group 2) underwent a zero-fluoroscopic approach using the Ensite Precision™ 3-D magnetic and impedance-based mapping system (Abbott Inc).ResultsGroup 1 comprised 14 AV-nodal re-entrant tachycardia (AVNRT), 12 typical atrial flutter, 4 accessory pathway (AP), 2 atrial tachycardia (AT), and 9 diagnostic EP studies (EPS). Group 2 comprised 16 AVNRT, 17 atrial flutter, 6 AP, 3 AT, 2 AV-nodal ablations, and 7 EPS. A complete zero-fluoroscopic approach was achieved in 94% of Group 2 patients. All procedures were acutely successful, and no complications occurred. There was a significant reduction in fluoroscopy dose, dose area product, and time (p < 0.0001, for all), with no difference in procedure times. Ablation time for typical atrial flutter was shorter in Group 2 (p = 0.006).ConclusionsA zero-fluoroscopic strategy for diagnosis and treatment of SVTs using this novel 3D-electroanatomical mapping system is feasible in majority of patients, is safe, reduces ionizing radiation exposure, and does not compromise procedural times, success rates, or complication rates.

Subacute Massive Pulmonary Thromboembolism: A Rare Delayed Complication After Radiofrequency Ablation

A 36-year old man had undergone treatment by radiofrequency ablation for supraventricular tachycardia. His electrocardiogram (ECG) after ablation was essentially normal. One month after ablation he noticed mild dyspnea on exertion. Over the next 3 months, this increased and he sought medical

Cost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia in Guatemala: Patient Outcomes and Economic Analysis from a Low- to Middle-Income Country

BackgroundRadiofrequency ablation (RFA) is an established but expensive treatment alternative for many forms of supraventricular tachycardia (SVT). Currently, no studies exist on the cost-effectiveness of RFA compared with that of medical treatment (MT) in adult Latin American population. MethodsBetween 2007 and 2012, we identified 103 adults who underwent RFA for SVT in the National Unit of Cardiovascular Surgery (Unidad Nacional de Cirugía Cardiovascular [UNICAR]) in Guatemala. A decision tree was developed with all clinical outcome parameter estimates obtained from the Adult Electrophysiology Clinic. Cost data were obtained from UNICAR’s administration. A cost-effectiveness analysis that evaluated costs and quality-adjusted life-years to compare interventions in terms of their incremental cost-effectiveness ratios was conducted. ResultsThe first RFA had an 83% success rate, and a cumulative success rate of 94% was achieved with a second. The cost of the RFA procedure itself was $5411. RFA gained 1.46 quality-adjusted life-years and saved $7993 compared with MT for patients with SVT. This demonstrates that in Guatemala, RFA dominates MT in the management of SVT. Using assumptions based largely on the outcomes in UNICAR, we found that RFA is highly cost-effective. This is a consistent finding, even after varying assumptions about efficacy, complication rates, and quality of life. ConclusionsRFA dominates MT by improving quality of life and reducing expenditures when used to treat patients with severe symptoms of SVT in Guatemala. The robustness of these finding to variations in parameter assumptions suggests that these findings may hold in other similar settings.

Trends in fluoroscopy time during radiofrequency catheter ablation of supraventricular tachycardias

Catheter ablation is a well established therapeutic option for the treatment of supraventricular tachycardias in symptomatic patients refractory to antiarrhythmic drug therapy. A major limitation of catheter ablation is the procedure length with significant exposure to fluoroscopy. The radiation exposure can be harmful to professionals and patients. These risks include acute and subacute skin injury, as well as radiation-induced cancer and genetic abnormalities [ 1 Mahesh M. Fluoroscopy: patient radiation exposure issues. Radiographics. 2001; 21: 1033-1045 Crossref PubMed Scopus (286) Google Scholar , 2 Kovoor P. Ricciardello M. Collins L. Uther J.B. Ross D.L. Risk to patients from radiation associated with radiofrequency ablation for supraventricular tachycardia. Circulation. 1998; 98: 1534-1540 Crossref PubMed Scopus (161) Google Scholar ]. Three-dimensional reconstruction systems of the cardiac chambers, which allow visualization of the electrodes catheters, have been introduced to facilitate the mapping and ablation procedure and in several studies have demonstrated to reduce the fluoroscopy time during ablation of supraventricular and ventricular tachycardias. The aim of this study was to evaluate the trend in fluoroscopy time, over a six year period, during radiofrequency catheter ablation of supraventricular tachycardias, performed, in a high volume center, by three different experienced operators.

Radiofrequency ablation of supraventricular tachycardias in patients with congenital heart disease and difficult access to the chamber of interest using remote magnetic navigation

Background: Supraventricular tachycardia (SVT) ablation in patients with adult congenital heart disease (ACHD) can be challenging. Remote magnetic navigation (RMN) guided ablation with three-dimensional (3D) image integration may provide benefit in patients with complex anatomy. Methods: SVT ablation procedures in patients with complex defects and difficult access to the chamber of interest were retrospectively identified (Table 1). All the procedures were done with retrograde aortic and/or superior venous accesses using RMN guided mapping/ablation and 3D image integration. Results: A total of 45 SVT ablation procedures in 32 patients (age 32±13 years, 18 male) were analysed. A median of 1 (1-5) different SVTs were targeted by procedure using 1.6±0.6 diagnostic catheters. The median procedure time was 252 (36 - 485) minutes with a mean 28.8±18.5 radiofrequency applications. Median fluoroscopy time was 4.2 (0.6 - 15.5) minutes. Acute success was 82.2% and SVT free rate was 75.8% during a mean follow-up of 20 months. View this table: Table 1 Conclusion: The ablation of SVTs in patients with complex congenital heart disease and difficult access to the chamber of interest is feasible using remote magnetic navigation and 3D-image integration with satisfactory success rates and remarkably low fluoroscopy exposure.

Effects of deep sedation on cardiac electrophysiology in patients undergoing radiofrequency ablation of supraventricular tachycardia: impact of propofol and ketamine

Propofol is commonly used as an anaesthetic during catheter ablation. Bradycardia and termination of supraventricular tachycardia (SVT) under propofol are reported. Ketamine is used for cardiac catheterization procedures and increases heart rate and blood pressure. Our study aimed to determine the effects of propopfol and ketamine on atrial electrophysiology. Thirty-one patients undergoing electrophysiological study prior to SVT ablation were enrolled. Patients received a combination of propofol/midazolam (n = 10), ketamine/midazolam (n = 9), or midazolam alone (n = 12). Electrophysiological study was performed before and after administration of the anaesthetic agents. Blood pressure, corrected sinus node recovery time, Wenckebach cycle length, and atrial conduction time were measured. We found a significant increase in heart rate, systolic, and diastolic blood pressure and a significant shortening of atrial conduction time after administration of ketamine compared with propofol and the control. Results for ketamine, propofol and the control, respectively: mean (SD) change in heart rate was 12.4 (8.3), -1.4 (8), and 1 (7.5) b.p.m. (P = 0.002); mean (SD) change in systolic blood pressure was 19.2 (8.1), -22 (9), and 0.1 (5.7) mmHg (P < 0.001); mean (SD) change in diastolic blood pressure was 6.6 (9.7), -7.8 (2.9), and 2.3 (4.5) mmHg (P = 0.001); and mean (SD) change in atrial conduction time was -13.7 (16.4), 4.5 (11.1), and -0.3 (3.8) ms (P = 0.008). No significant affection of sinus node or antrioventricular node function was seen. Our results show stimulatory effects of ketamine on heart rate, atrial conduction, and blood pressure. Ketamine, therefore, may be beneficial in patients with pre-existing hypotension and bradycardia.

Radiation exposure: A silent complication of catheter ablation procedures

An underappreciated “silent complication” of catheter ablation procedures is radiation exposure. X-ray exposure results in acute complications related to dose- and time-dependent exposure as well as a cumulative, lifetime risk to not only the patient but also the operator and electrophysiology staff. These risks include acute and subacute dermatologic injury, musculoskeletal injury, cataracts, malignancy, and genetic defects. 1 Rosenthal L.S. Beck T.J. Williams J. et al. Acute radiation dermatitis following radiofrequency catheter ablation of atrioventricular nodal reentrant tachycardia. Pacing Clin Electrophysiol. 1997; 20: 1834-1839 Crossref PubMed Scopus (72) Google Scholar , 2 Kovoor P. Ricciardello M. Collins L. Uther J.B. Ross D.L. Risk to patients from radiation associated with radiofrequency ablation for supraventricular tachycardia. Circulation. 1998; 98: 1534-1540 Crossref PubMed Scopus (160) Google Scholar , 3 Perisinakis K. Damilakis J. Theocharopoulos N. Manios E. Vardas P. Gourtsoyiannis N. Accurate assessment of patient effective radiation dose and associated detriment risk from radiofrequency catheter ablation procedures. Circulation. 2001; 104: 58-62 Crossref PubMed Scopus (141) Google Scholar These risks are heightened for lengthy and multiple ablation procedures (eg, atrial fibrillation) and for vulnerable patients such as pediatric, obese, and pregnant patients. Contact force–controlled zero-fluoroscopy catheter ablation of right-sided and left atrial arrhythmia substratesHeart RhythmVol. 9Issue 5PreviewConventional catheter ablation of cardiac arrhythmias is associated with radiation risks for patients and laboratory personnel. However, nonfluoroscopic catheter guidance may increase the risk for inadvertent cardiac injury. A novel radiofrequency ablation catheter capable of real-time tissue-tip contact force measurements may compensate for nonfluoroscopic safety issues. Full-Text PDF

Usefulness of Radiofrequency Ablation of Supraventricular Tachycardia to Decrease Inappropriate Shocks from Implantable Cardioverter–Defibrillators

Inappropriate implantable cardioverter-defibrillator (ICD) therapies can lead to significant adverse events and increased mortality. These therapies are often the result of supraventricular tachycardias (SVTs). The objective of this study was to evaluate the incidence of SVT leading to inappropriate shocks in a large cohort of patients with ICDs and assess the efficacy of radiofrequency ablation (RFA) in decreasing these therapies. Patients with ICDs and recurrent SVTs were identified. A cohort of patients with ICD therapies subsequently underwent electrophysiologic study and RFA. Eighty-four patients (13%) were found to have SVT leading to 122 inappropriate ICD shocks and 130 episodes of antitachycardia pacing therapies. Median time to SVT onset after ICD implantation was 269 days. Electrophysiologic studies were performed in 30 patients. Successful RFA was performed for atrial tachycardia, atrial flutter, or atrioventricular nodal reentrant tachycardia in 22 patients. Ninety-five percent of patients who underwent successful SVT ablation had no further inappropriate ICD therapies compared to 63% of patients in whom ablation was not performed during a mean follow-up of 20.7 ± 11.9 months. In conclusion, SVT is responsible for a significant number of inappropriate ICD therapies. RFA is an effective strategy to substantially decrease subsequent inappropriate ICD therapies.

Ibutilide for the Cardioversion of Paroxysmal Atrial Fibrillation during Radiofrequency Ablation of Supraventricular Tachycardias

Direct current electrical cardioversion (DC-ECV) is the preferred treatment for the termination of paroxysmal atrial fibrillation (AF) that occurs during radiofrequency ablation (RFA) of supraventricular tachycardias (SVT). Intravenous Ibutilide may be an alternative option in this setting. Thirty-four out of 386 patients who underwent SVT-RFA presented paroxysmal AF during the procedure and were randomized into receiving ibutilide or DC-ECV. Ibutilide infusion successfully cardioverted 16 out of 17 patients (94%) within 17.37 ± 7.87 min. DC-ECV was successful in all patients (100%) within 17.29 ± 3.04 min. Efficacy and total time to cardioversion did not differ between the study groups. No adverse events were observed. RFA was successfully performed in 16 patients (94%) in the ibutilide arm and in all patients (100%) in the DC-ECV arm, p = NS. In conclusion, ibutilide is a safe and effective alternative treatment for restoring sinus rhythm in cases of paroxysmal AF complicating SVT-RFA.

Effect of β-adrenergic stimulation on QT interval accommodation

QT interval correction formulas are based on instantaneous heart rate (HR), but QT interval adaptation to sudden HR change occurs gradually. In humans, the QT interval has been reported to reach a new steady-state value in about 2 minutes. This study sought to assess β-adrenergic stimulation effects on QT interval response to HR change. Ten subjects (42.1 ± 15.3 years, 3 men) undergoing radiofrequency ablation of supraventricular tachycardia were studied. Atrial pacing for 5 minutes at an HR ranging from 60 to 140 beats/min was performed before and during dobutamine infusion (10 μg/kg/min). The QT response to sudden HR change was evaluated. The QT response to sudden HR change consists of an immediate response (IR), followed by a gradual monoexponential course to the new steady-state value. Linear function results in inferior fit of QT adaptation course (P < .05 compared with exponential). The time constant of the exponential is approximately 1 minute (50.9 ± 11.4 seconds). The IR magnitude is approximately 3% of the RR interval change (2.97% ± 2.01%). Dobutamine shortens steady-state QT at given HR (from 301.8 ± 11.2 ms to 290.6 ± 13.2 ms at 120 beats/min; P < .001) and increases IR magnitude (to 13.28% ± 8.99% of RR change; P < .01). During sinus rhythm, QT variability and QT variability index were significantly increased by dobutamine. QT adaptation has 2 distinct phases, which might have different mechanisms. The effect of β-adrenergic stimulation on IR may increase QT variability by increasing the immediate response to HR variability. These results may be important in the assessment of drug effects on repolarization and for understanding of QT variability.

Prevalence of fractionated electrograms in the coronary sinus: Comparison between patients with persistent or paroxysmal atrial fibrillation and a control population

Complex fractionated atrial electrograms (CFAEs) are often identified as targets for radiofrequency ablation in the coronary sinus (CS) of patients with atrial fibrillation (AF). The purpose of this study was to determine whether similar features are present in a normal control population. Twenty-four patients with AF (12 paroxysmal, 12 persistent) were compared with 12 controls (undergoing radiofrequency ablation for supraventricular tachycardia) in whom at least 1 minute of AF was induced by rapid atrial pacing. Electrogram comparisons during sinus rhythm and AF were made offline. A random 10-second window of AF was used for analysis of fractionation and dominant frequency. The three groups were age matched. CFAEs during AF were less prevalent in the control versus the AF groups (control = 30% +/- 28%, paroxysmal AF = 63% +/- 34%, persistent AF = 62% +/- 29%, P = .01). This difference was significant for the proximal to mid-CS only. Conduction velocity within the CS was slower in AF versus control patients (paroxysmal AF = 51 +/- 6 cm/s, persistent AF = 52 +/- 6 cm/s, control = 73 +/- 11 cm/s, P <.001). Minimum AF cycle length was shorter in the AF groups versus the control group (paroxysmal AF = 132 +/- 34 ms, persistent AF = 127 +/- 34 ms, control = 168 +/- 30 ms, P = .01). No differences in dominant frequency or prevalence of sinus rhythm CFAE was seen among the three groups. AF patients have a higher prevalence of CFAE and short cycle length activation within the proximal CS than control patients with nonclinical AF. CFAE are associated with slowed CS conduction in AF patients. No difference in the dominant frequency during AF was seen. CS CFAEs are common in a control population with induced AF and are unlikely to signify clinically important AF drivers in this setting.

Magnetstyrt ablasjonsbehandling av hjerterytmeforstyrrelser

The first use of magnetic navigation for radiofrequency ablation of supraventricular tachycardias, was published in 2004. Subsequently, the method has been used for treatment of most types of tachyarrhythmias. This paper provides an overview of the method, with special emphasis on usefulness of a new remote-controlled magnetic navigation system. The paper is based on our own scientific experience and literature identified through a non-systematic search in PubMed. The magnetic navigation system consists of two external electromagnets (to be placed on opposite sides of the patient), which guide an ablation catheter (with a small magnet at the tip of the catheter) to the target area in the heart. The accuracy of this procedure is higher than that with manual navigation. Personnel can be quickly trained to use remote magnetic navigation, but the procedure itself is time-consuming, particularly for patients with atrial fibrillation. The major advantage is a considerably lower radiation burden to both patient and operator, in some studies more than 50 %, and a corresponding reduction in physical strain on the operator. The incidence of procedure-related complications seems to be lower than that observed with use of manually operated ablation catheters. Work is ongoing to improve magnetic ablation catheters and methods that can simplify mapping procedures and improve efficacy of arrhythmia ablation. The basic cost for installing a complete magnetic navigation laboratory may be three times that of a conventional electrophysiological laboratory. The new magnetic navigation system has proved to be applicable during ablation for a variety of tachyarrhythmias, but is still under development.

The Utility of Ketamine in Facilitating the Induction of Isoproterenol-Refractory Idiopathic Ventricular Tachyarrhythmias

CATHETER ABLATION, initially used to treat select supraventricular arrhythmias, such as atrioventricular (AV) nodal re-entry and the Wolff-Parkinson-White syndrome, is now being applied to treat virtually all documented symptomatic tachyarrhythmias that are refractory to medical management. Cost-effectiveness analysis strongly favors catheter ablation for persons with highly symptomatic arrhythmias because of the potential for “cure.” 1 Cheng C.H. Sanders G.D. Hlatky M.A. et al. Cost-effectiveness of radiofrequency ablation for supraventricular tachycardia. Ann Intern Med. 2000; 133: 864-876 Crossref PubMed Scopus (65) Google Scholar Anesthetic management of the arrhythmia patient undergoing catheter ablation is evolving as an important aspect of clinical care. In the electrophysiology (EP) laboratory, the induction and maintenance of arrhythmias are integral to arrhythmia diagnosis and treatment. Normal and abnormal myocardial tissue shows varied responses to volatile and intravenous anesthetic agents. 2 Huneke R. Fassl J. Rossaint R. et al. Effects of volatile anesthetics on cardiac ion channels. Acta Anaesthesiol Scand. 2004; 48: 547-561 Crossref PubMed Scopus (51) Google Scholar Therefore, the potential effects of anesthetic agents on cardiac excitability and the autonomic nervous system are important considerations for the cardiology-anesthesia team. A case of a patient who presented for electrophysiologic evaluation of a medically refractory paroxysmal idiopathic ventricular tachycardia (VT) under general anesthesia is presented. Neither premature ventricular beats nor VT could be induced despite titration of isoproterenol and an aggressive ventricular stimulation pacing protocol until the anesthetic technique was changed to a ketamine infusion, suggesting a possible role for ketamine use during invasive EP testing to potentially enhance the induction of difficult to induce arrhythmias in humans.

Radiofrequency Ablation for Supraventricular Tachycardia in Children ≤15 kg Is Safe and Effective

Risks associated with radiofrequency ablation (RFA) have been reported to be increased in children < or =15 kg. We sought to compare the safety and efficacy of RFA in children <15 kg with those between 15.1 and 20 kg. 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. Patients were divided into those < or =15 kg (group 1, n = 25) and those between 15.1 and 20 kg (group 2, n = 44). The two groups differed significantly in age and weight by design (group 1: mean weight, 11.9 +/- 3.0 kg; age, 2.8 +/- 1.9 years; group 2: weight, 18.0 +/- 1.5 kg; age, 5.1 +/- 1.1 years). There were no significant differences in other baseline characteristics except for incidence of structural heart disease (28% group 1 vs 7% group 2, p < 0.01). No significant differences in mechanism of tachycardia, arrhythmia cycle length, number of total and brief RFA applications, total RFA time, average and maximum RFA temperatures, total procedure duration, short-term success rate (96% group 1 vs 86% group 2, p = 0.17), long-term success rate (91% group 1 vs 89% group 2, p = 0.76), or major complications (8.0% group 1 vs 2.3% group 2, p = 0.39) were found. There were no procedure-related deaths in either group. These data suggest that, in two large volume electrophysiology centers, the procedural risks and outcomes of RFA are similar between patients weighing less than 15 kg and those between 15.1 and 20 kg.

Identification of preferential sites of parasympathetic input to the atrioventricular node in man

Objectives The effects of subthreshold stimulation performed at various sites in the perinodal and posteroseptal space on atrioventricular (AV) nodal conduction were investigated. Background The identification of specific or preferential sites of parasympathetic innervation to the AV node is suggested by observations made in both the animal and clinical laboratories. Pathologic studies of the parasympathetic innervation to the AV node show it is made up of serpiginous fibers traveling at highly specific sites within the myocardium endocardially towards the compact AV node. Methods We utilized endocardial subthreshold stimulation to selectively identify and characterize AV nodal inputs. Fourteen patients (age: 56 ± 4 years) undergoing electrophysiologic testing with or without radiofrequency ablation for supraventricular tachycardia were studied. A steerable quadripolar catheter was positioned in 3 to 9 locations in the region between the site recording the His bundle electrogram and the coronary sinus (CS) os under flouroscopic and electroanatomic guidance. We mapped anterosuperior sites at or near sites with His potential recordings, and up to 2 mm inferior to the His bundle recording, posteroseptal sites included the CS os and sites along the posterior, superior, and inferior border of the CS. Atrial pacing was performed at a cycle length 50 ms longer than Wenckebach cycle length. Subthreshold stimulation was applied at a frequency of 10 Hz and 20 Hz delivered to the distal electrode pair. AH and HV intervals were recorded before and during subthreshold stimulation. AH prolongation was defined as a reproducible increase in AH interval by >10 ms from a stable baseline AH interval. Results Eight of 14 patients demonstrated prolongation of AV conduction at a mean of 1.75 ± 0.2 sites. Mean AH prolongation was 56.4 ± 13.0 ms (p = 0.02) from baseline. AH prolongation was achieved 15.4 ± 1.8 mm below the His bundle recording in 7 patients, at the site of the His bundle recording in 3 patients, and along the posterior CS os border in 3 patients. Conclusion Subthreshold stimulation prolongs AV nodal conduction only at specific sites within the triangle of Koch, suggesting discrete parasympathetic endocardial inputs into the AV nodal region.

Radiofrequency ablation of supraventricular tachycardia using an ultrasound-based navigational system and a cooled ablation catheter

Radiofrequency ablation of supraventricular tachycardia using an ultrasound-based navigational system and a cooled ablation catheter

Correction: Cost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia

Correction: Cost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia

Cost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia

Summaries for Patients5 December 2000Cost-Effectiveness of Radiofrequency Ablation for Supraventricular TachycardiaSearch for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-133-11-200012050-00005 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail What is the problem and what is known about it so far?Supraventricular tachycardia (SVT) is a type of abnormally fast heart rhythm that affects about 570,000 people in the United States. Although SVT is rarely life-threatening, some patients can have uncomfortable episodes of SVT many times per year that require urgent treatment. Options for treatment include drug therapy and radiofrequency ablation. Radiofrequency ablation is a procedure in which a doctor inserts a special electronic device through a small tube (catheter) inserted into a patient's vein. The doctor steers this device through the veins up to the patient's heart. Once ... Author, Article, and Disclosure InformationAffiliations: The summary below is from the full report titled “Cost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia.” It is in the 5 December 2000 issue of Annals of Internal Medicine (volume 133, pages 864-876). The authors are CHF Cheng, GD Sanders, MA Hlatky, P Heidenreich, KM McDonald, BK Lee, MS Larson, and DK Owens.Summaries for Patients are a service provided by Annals to help patients better understand the complicated and often mystifying language of modern medicine.Summaries for Patients are presented for informational purposes only. These summaries are not a substitute for advice from your own medical provider. If you have questions about this material, or need medical advice about your own health or situation, please contact your physician. PreviousarticleNextarticle Advertisement FiguresReferencesRelatedDetailsSee AlsoCost-Effectiveness of Radiofrequency Ablation for Supraventricular Tachycardia Carol H.F. Cheng , Gillian D. Sanders , Mark A. Hlatky , Paul Heidenreich , Kathryn M. McDonald , Byron K. Lee , Mary S. Larson , and Douglas K. Owens Metrics 5 December 2000Volume 133, Issue 11Page: I-57KeywordsCathetersCongestive heart failureDrug therapyHeartQuality adjusted life yearsQuality of lifeRadiofrequency ablationSimulation and modelingTachycardiaVeins ePublished: 5 December 2000 Issue Published: 5 December 2000 CopyrightCopyright © 2000 by American College of Physicians. All Rights Reserved.PDF DownloadLoading ...