title: Isointegral body surface maps and left ventricular hypertrophy in post-infarction heart failure patients.
abstract: OBJECTIVE
  Ventricular remodeling causes left ventricular hypertrophy (LVH) in myocardial infarction patients. We hypothesized that LVH can be evaluated using isointegral body surface maps.
  
  
  METHODS
  Thirty-two patients with post-infarction stable chronic heart failure underwent a 64-electrode body surface mapping (isointegral QRS, QRST, ST and STT maps) and 2-D echocardiography.
  
  
  RESULTS
  LVH was present in 16 of them (50%) according to 2D-echocardiography. Isointegral maxima increased and the minima were more negative in patients with LVH, and the differences were statistically significant for: isointegral QRS maxima (35±16 versus 60±21 mV.ms, p=0.0085) and minima (25±15 versus 69±14 mV.ms, p=0.0067), isointegral maxima and minima in the second third of the QRS complex, isointegral QRST minima and isointegral ST minima (5±2 versus 10±4 mV.ms, p=0.0026). Isointegral multipolar maps prevalence was increased in patients with LVH (75% versus 50%). Isointegral QRS and QRST maxima correlated best with the left ventricular mass (r=0.73 and 0.81).
  
  
  CONCLUSIONS
  Body surface mapping is a useful method for the evaluation of patients with left ventricular hypertrophy in post-infarction heart failure. The most sensitive parameters are: isointegral QRS maxima and minima, especially in the second third of the QRS complex, isointegral QRST maps (minima, maxima and multipolarity) and isointegral ST minima.
authors.affiliation: Victor Babes, University of Medicine and Pharmacy Department of Pathophysiology Timisoara Romania. ioanamozos@yahoo.de
authors.forename: Ioana
authors.initials: I
authors.lastname: Mozos
authors.forename: M
authors.initials: M
authors.lastname: Hancu
authors.forename: N
authors.initials: N
authors.lastname: Jost
mesh_terms: D000368:Aged; D018780:Body Surface Potential Mapping / Q000379:methods*; D002908:Chronic Disease; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006333:Heart Failure / Q000473:pathology* / Q000503:physiopathology; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000473:pathology* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000473:pathology* / Q000503:physiopathology; D012680:Sensitivity and Specificity; D020257:Ventricular Remodeling / Q000502:physiology