Prognostic significance of reciprocal ST-segment depression in patients with acute STEMI undergoing immediate invasive intervention

Differentiating between comatose patients resuscitated from acute coronary syndrome-associated and subarachnoid hemorrhage-associated out-of-hospital cardiac arrest

“…Twelve-lead ECGs were evaluated by three independent cardiologists who were blinded to each patient's information. An ST elevation was defined as an elevation of more than 0.1 mV in !2 contiguous ECG leads [3,19,20]. An ST depression of 0.1 mV in !2 contiguous leads was considered significant [19,20].…”

“…An ST elevation was defined as an elevation of more than 0.1 mV in !2 contiguous ECG leads [3,19,20]. An ST depression of 0.1 mV in !2 contiguous leads was considered significant [19,20]. Each ST elevation and ST depression were classified according to the correspondent anatomical area, namely, anterior leads (V1-4), lateral leads (I, aVL, and V5-6), and inferior leads (II, III, and aVF) [20].…”

“…An ST depression of 0.1 mV in !2 contiguous leads was considered significant [19,20]. Each ST elevation and ST depression were classified according to the correspondent anatomical area, namely, anterior leads (V1-4), lateral leads (I, aVL, and V5-6), and inferior leads (II, III, and aVF) [20]. A reciprocal ST depression was considered to be a sign of acute transmural myocardial ischemia [20].…”

“…Each ST elevation and ST depression were classified according to the correspondent anatomical area, namely, anterior leads (V1-4), lateral leads (I, aVL, and V5-6), and inferior leads (II, III, and aVF) [20]. A reciprocal ST depression was considered to be a sign of acute transmural myocardial ischemia [20]. The presence or absence of a reciprocal ST depression was also noted when ST elevation was present [20].…”

“…A reciprocal ST depression was considered to be a sign of acute transmural myocardial ischemia [20]. The presence or absence of a reciprocal ST depression was also noted when ST elevation was present [20]. A reciprocal change in anterior leads was defined as ST depression in the inferior leads or lateral leads [20].…”