title: A comparison of cornell and sokolow-lyon electrocardiographic criteria for left ventricular hypertrophy in korean patients.
abstract: OBJECTIVE
  Electrocardiography (ECG) is a cost-effective and useful method for diagnosing left ventricular hypertrophy (LVH) in a large-scale study or in clinical practice. Among ECG criteria, the Cornell product (Cor P) and Sokolow-Lyon criteria were adopted by the European Society of Hypertension-European Society of Cardiology Guidelines but have different performances among races. The aim of this study was to compare the diagnostic performance of two voltage criteria in Korean patients.
  
  
  METHODS
  Electrocardiography and echocardiographic LV mass of 332 (159 male, 173 female) consecutive patients were analyzed. Cornell voltage criteria and the Cor P were compared with Sokolow-Lyon voltage (Sok V) and the Sokolow-Lyon product (Sok P). The sensitivities and specificities were estimated using a receiver-operating characteristics (ROC) curve in relation to the LVH diagnosis. The sensitivities and revised cut-off values were derived at specificity levels of 90, 95, and 100%.
  
  
  RESULTS
  The Cornell-based criteria generally showed better performance than that of the Sok V criteria and Sok P in the area under the ROC curve analysis. The revised cut-off values for the Cornell voltage criteria (20 and 16 mm for males and females, respectively) showed an improved sensitivity (19.7 and 30.3% for males and females, respectively), with a high specificity of 95%.
  
  
  CONCLUSIONS
  The Cornell-based criteria had better performance than that of the Sokolow-Lyon criteria in both Korean men and women. However, revised cut-off values are needed to improve accuracy.
authors.affiliation: Division of Cardiology, Department of Internal Medicine, Hanyang University Medical Center, Seoul, Korea.
authors.forename: Jin Kyu
authors.initials: JK
authors.lastname: Park
authors.forename: Jeong Hun
authors.initials: JH
authors.lastname: Shin
authors.forename: Seok Hwan
authors.initials: SH
authors.lastname: Kim
authors.forename: Young-Hyo
authors.initials: YH
authors.lastname: Lim
authors.forename: Kyung-Soo
authors.initials: KS
authors.lastname: Kim
authors.forename: Soon Gil
authors.initials: SG
authors.lastname: Kim
authors.forename: Jeong Hyun
authors.initials: JH
authors.lastname: Kim
authors.forename: Heon Gil
authors.initials: HG
authors.lastname: Lim
authors.forename: Jinho
authors.initials: J
authors.lastname: Shin
keywords: Echocardiography; Electrocardiography; Hypertrophy, left ventricular; Sensitivity and specificity