title: Distribution of cardiac geometric patterns on echocardiography in essential hypertension. Impact of two criteria of stratification.
abstract: OBJECTIVE
  To evaluate 2 left ventricular mass index (LVMI) normality criteria for the prevalence of left ventricular geometric patterns in a hypertensive population ( HT ).
  
  
  METHODS
  544 essential hypertensive patients, were evaluated by echocardiography, and different left ventricular hypertrophy criteria were applied: 1 - classic : men - 134 g/m2 and women - 110 g/m2; 2- obtained from the 95th percentil of LVMI from a normotensive population (NT).
  
  
  RESULTS
  The prevalence of 4 left ventricular geometric patterns, respectively for criteria 1 and 2, were: normal geometry - 47.7% and 39.3%; concentric remodelying - 25.4% and 14.3%; concentric hypertrophy - 18.4% and 27.7% and excentric hypertrophy - 8.8% and 16.7%, which confered abnormal geometry to 52.6% and 60.7% of hypertensive. The comparative analysis between NT and normal geometry hypertensive group according to criteria 1, detected significative stuctural differences,"( *p < 0.05):LVMI- 78.4 +/- 1.50 vs 85.9 +/-0.95 g/m2 *; posterior wall thickness -8.5 +/- 0.1 vs 8.9 +/- 0.05 mm*; left atrium - 33.3 +/- 0.41 vs 34.7 +/- 0.30 mm *. With criteria 2, significative structural differences between the 2 groups were not observed.
  
  
  CONCLUSIONS
  The use of a reference population based criteria, increased the abnormal left ventricular geometry prevalence in hypertensive patients and seemed more appropriate for left ventricular hypertrophy detection and risk stratification.
authors.affiliation: Hospital do Rim e Hipertensão, São Paulo, SP, 04038-002, Brazil.
authors.forename: E C
authors.initials: EC
authors.lastname: Rosa
authors.forename: V A
authors.initials: VA
authors.lastname: Moisés
authors.forename: R C
authors.initials: RC
authors.lastname: Sesso
authors.forename: N E
authors.initials: NE
authors.lastname: Kohlmann
authors.forename: F L
authors.initials: FL
authors.lastname: Plavnik
authors.forename: M T
authors.initials: MT
authors.lastname: Zanella
authors.forename: A B
authors.initials: AB
authors.lastname: Ribeiro
authors.forename: O
authors.initials: O
authors.lastname: Kohlmann
mesh_terms: D000704:Analysis of Variance; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D015150:Echocardiography, Doppler; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging*; D017379:Hypertrophy, Left Ventricular / Q000000981:diagnostic imaging*; D008297:Male; D018579:Patient Selection; D012189:Retrospective Studies; D018570:Risk Assessment