What Does the Standard 12-Lead ECG Reveal in NQMI?
According to BSPM features, the potential losses of different regions resulted in minor changes at different times during the QRS interval. The initial depolarization was involved only in cases of midseptal and anterior paraseptal potential losses: a slight r-wave reduction was revealed in leads V1 and V2. However, true pathological Q waves were seen in the leads situated above them (according to the leads V1′ and V2′). Consequently, these cases correspond to Kornreich’s “missed” QMIs, in contrast with the other cases in which the initial period was intact and pathological Q waves were nowhere to be seen (ie, true NQMI). 5 For anteroseptal/inferior middle and anteroseptal apical potential losses, the r wave in leads V1 to V3 was narrower, similar to the right-sided leads. For inferoapical and inferobasal sites, a notch could appear in the inferior ECG leads. For the anterosuperior middle/basal sites, an r-wave reduction of varying degrees could be seen in leads V2 to V4. For posterolat
