Long-term follow-up of patients after transcatheter direct current ablation of the atrioventricular junction. 1990

M Rosenquvist, and M A Lee, and L Moulinier, and M J Springer, and J A Abbott, and J Wu, and J J Langberg, and J C Griffin, and M M Scheinman
Department of Medicine, University of California, San Francisco.

The long-term follow-up study (41 +/- 23 months) of 47 patients undergoing direct current ablation because of drug-resistant supraventricular arrhythmias is reported. Significant early complications occurred in four patients and included hypotension, pericarditis, nonsustained polymorphic ventricular tachycardia and one sudden death. In 42 patients (86%), complete atrioventricular (AV) block was initially achieved. During the follow-up period, AV conduction resumed in 2 of these 42 patients. Of the seven patients in whom ablation was unsuccessful, two developed late complete AV block and three had symptomatic improvement. An improved activity level was reported among 83% of the patients with successful ablation. Health care utilization manifest as the number of hospital admissions per year before and after ablation decreased significantly after ablation (2.4 +/- 2.0 versus 0.3 +/- 0.5, p less than 0.001). Echocardiographic evaluation in five patients with a depressed left ventricular ejection fraction (27 +/- 7%) before ablation showed a significant increase (45 +/- 14%, p less than 0.05) after an average follow-up period of 31 months. New onset of congestive heart failure occurred after ablation in four patients, of whom two had no structural heart disease. The total mortality rate, including the one patient with sudden death, was 17% and was significantly higher among patients with underlying structural heart disease. Transcatheter direct current ablation is an effective treatment in patients with drug-resistant supraventricular tachycardia, providing a beneficial long-term outcome including an improved quality of life and a decrease in health care utilization.(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008019 Life Style Typical way of life or manner of living characteristic of an individual or group. (From APA, Thesaurus of Psychological Index Terms, 8th ed) Lifestyle Factors,Life Style Induced Illness,Lifestyle,Factor, Lifestyle,Life Styles,Lifestyle Factor,Lifestyles
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D012008 Recurrence The return of a sign, symptom, or disease after a remission. Recrudescence,Relapse,Recrudescences,Recurrences,Relapses
D002036 Bundle of His Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION. Atrioventricular Bundle,Anterior Fascicle,Kent-His Bundle,Left Bundle Branch of His,Posterior Fascicle,Right Bundle Branch of His,Atrioventricular Bundles,Bundle, Atrioventricular,Bundle, Kent-His,Bundles, Atrioventricular,Fascicle, Anterior,Fascicle, Posterior,His Bundle,Kent His Bundle
D002304 Cardiac Pacing, Artificial Regulation of the rate of contraction of the heart muscles by an artificial pacemaker. Pacing, Cardiac, Artificial,Artificial Cardiac Pacing,Artificial Cardiac Pacings,Cardiac Pacings, Artificial,Pacing, Artificial Cardiac,Pacings, Artificial Cardiac
D004452 Echocardiography Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic. Echocardiography, Contrast,Echocardiography, Cross-Sectional,Echocardiography, M-Mode,Echocardiography, Transthoracic,Echocardiography, Two-Dimensional,Transthoracic Echocardiography,2-D Echocardiography,2D Echocardiography,Contrast Echocardiography,Cross-Sectional Echocardiography,Echocardiography, 2-D,Echocardiography, 2D,M-Mode Echocardiography,Two-Dimensional Echocardiography,2 D Echocardiography,Cross Sectional Echocardiography,Echocardiography, 2 D,Echocardiography, Cross Sectional,Echocardiography, M Mode,Echocardiography, Two Dimensional,M Mode Echocardiography,Two Dimensional Echocardiography
D004598 Electrosurgery Division of tissues by a high-frequency current applied locally with a metal instrument or needle. (Stedman, 25th ed) Electrosurgeries

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