Table 3

Overview of 12 lead ECG criteria for diagnosis of acute myocardial infarction in the presence of left bundle branch block

ReferenceECG criteriaSensitivity (%)Specificity (%)Positive predictive value (%)Negative predictive value (%)
Cabrera’s sign is notching of the upstroke of the S wave in lead V3 or V4. Chapman’s sign is notching of the upstroke of the R wave in lead I, aVL, or V6.
NA, Not available.
Sgarbossa et al5Scoring system36968861
Hands et al6Q wave in ⩾2 of leads I, aVL, V5, V6299188NA
R wave regression V1–421100100NA
S wave notching ⩾2 of leads V3–5299188NA
Primary ST-T changes in ⩾2 adjacent leads259186NA
Eriksson et al7Concordant ST elevation ⩾1 mm0100NANA
ST depression ⩾1 mm V1–3095NANA
Discordant ST elevation ⩾5 mm2174NANA
Q wave I, aVL or V5, V67100NANA
R wave regression V1–4768NANA
S wave notching V3–52984NANA
ST/T wave concordant QRS795NANA
Wackers8Cabrera’s sign27NANANA
Chapman’s sign21NANANA
Abnormal Q waves31NANANA
ST elevation54NANANA
Shlipak et al1ST elevation ⩾1 mm in concordant leads710010071
ST depression ⩾1 mm in lead V1, V2, or V3310010071
ST elevation ⩾5 mm in discordant leads19823270
QRS notching39572868
RS V626793571
Cabrera’s sign7861768
Discordant ST elevation ⩾7 mm or concordant ST depression ⩾2 mm3995070
Positive T waves in lead with upright QRS3931769
Chapman’s sign3921468