title: [High-resolution electrocardiography in arrhythmogenic right ventricular disease].
abstract: OBJECTIVE
  To determine the value of the high-resolution ECG for the differential diagnosis of arrhythmogenic right ventricular disease.
  
  
  METHODS
  A group of 33 patients were studied, 16 males, mean age 34 +/- 16 years. All patients presented non-sustained or sustained or repetitive monomorphic ventricular tachycardias, with left bundle branch block morphology. The anatomic and functional evaluation of the right ventricle was made by a previous echocardiogram. No patient presented left ventricular or septal pathology. High-resolution ECG were obtained from a Corazonix-Predictor II program. In the filtered QRS was analyzed root mean square of the last 40ms QRS, the final lasting of the low amplitude signals < 40 microV and filtered QRS duration. Ten patients underwent to electrophysiological study with right ventricular mapping.
  
  
  RESULTS
  The ventricular tachycardias was non-sustained in 18 patients, sustained in 8 and repetitive monomorphic in 7 patients. The echocardiogram was normal in 23 patients, and all these also presented normal high resolution ECG. Among the 10 patients with altered echocardiogram, 9 presented abnormal high-resolution ECG (sensibility 90%; specificity 100%; positive predictive value 100%; negative predictive value 96%; efficacy of the method to define the presence of manifested right ventricular pathology was 96%). Among the 10 patients with altered echocardiogram, 8 underwent to electrophysiological study. In all was detected an abnormal ventricular mapping and abnormal high-resolution ECG.
  
  
  CONCLUSIONS
  The high-resolution ECG is an useful method to define a right ventricular manifested pathology in presence of arrhythmogenic disease of this cavity.
authors.affiliation: Hospital Pró Cardíaco/Pró-Ritmo-Rio de Janeiro.
authors.forename: I G
authors.initials: IG
authors.lastname: Maia
authors.forename: F
authors.initials: F
authors.lastname: Cruz Filho
authors.forename: M L
authors.initials: ML
authors.lastname: Fagundes
authors.forename: A M
authors.initials: AM
authors.lastname: Costa
authors.forename: S
authors.initials: S
authors.lastname: Boghossian
authors.forename: R
authors.initials: R
authors.lastname: Sá
authors.forename: P A
authors.initials: PA
authors.lastname: Alves
authors.forename: L
authors.initials: L
authors.lastname: Belem
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000503:physiopathology; D016278:Ventricular Function, Right / Q000502:physiology
vernacular_title: Electrocardiografia de alta resolução na doença ventricular direita arritmogênica.