In the proper clinical context, ST-segment elevation (measured at the J-point) is considered suggestive of ongoing coronary artery acute occlusion in the following cases: at least two contiguous leads with ST-segment elevation >=2.5 mm in men < 40 years, >= 2mm in men > 40 years, or >= 1.5 mm in women in leads V2–V3 and/or >= 1mm in the other leads [in the absence of left ventricular (LV) hypertrophy or left bundle branch block LBBB)] Likewise, ST-segment depression in leads V1 –V3 suggests myocardial ischaemia, especially when the terminal T-wave is positive (ST-segment elevation equivalent), and confirmation by concomitant ST-segment elevation >= 0.5 mm recorded in leads V7–V9 should be considered as a means to identify posterior MI - Oxygen is indicated in patients with hypo- xaemia (SaO2 < 90% or PaO2 < 60 mmHg. Routine oxygen is not recommended in patients with SaO2 >= 90%
In the proper clinical context, ST-segment elevation (measured at
ResponderEliminarthe J-point) is considered suggestive of ongoing coronary artery acute
occlusion in the following cases: at least two contiguous leads with ST-segment elevation >=2.5 mm in men < 40 years,
>= 2mm in men > 40 years, or >= 1.5 mm in women in leads V2–V3 and/or >= 1mm in the other leads [in the absence of left ventricular (LV) hypertrophy or left bundle branch block LBBB)]
Likewise, ST-segment depression in leads V1
–V3 suggests myocardial ischaemia, especially when the terminal T-wave is positive (ST-segment elevation equivalent), and confirmation by concomitant ST-segment elevation >= 0.5 mm recorded in leads
V7–V9 should be considered as a means to identify posterior MI
- Oxygen is indicated in patients with hypo-
xaemia (SaO2 < 90% or PaO2 < 60 mmHg. Routine oxygen is not recommended in patients with SaO2
>= 90%