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Table 5 Predictive values of electrocardiographic variables of the diagnosis of apical hypertrophic cardiomyopathy

From: Usefulness of ECG to differentiate apical hypertrophic cardiomyopathy from non-ST elevation acute coronary syndrome

 

Cut off (mv)

Sensitivity

Specificity

PPV

NPV

Predictive accuracy

R wave in lead V5

2.07

90.2%

80.6%

72.5%

93.5%

92.3%

Neg T wave in lead V6

0.185

95.1%

61.1%

58.2%

95.7%

85.2%

Dep ST-segment in lead V4

0.05

83.3%

92.7%

76.5%

96.7%

82.0%

R wave in lead V5 + neg T wave in lead V6 + dep ST-segment in lead V4

2.585

90.2%

87.5%

80.4%

94.0%

94.1%

  1. Abbreviation: dep Depressive, neg Negative