12 lead depression

What does a normal 12 lead with no st elevation but depression in some leads signify?
The ST segment represents depolarization of ventricles and beginning of ventricular repolarization. Ideally it should be isometric, if ST is depressed when it is 0.5mm below the isometric line. ST depression can be associated with digoxin toxicity or myocardial ischemia. ST elevation is usually 1mm or more above the isometric line and associated with myocardial injury. Hope this helps. IT takes a lot of practice to read EKGs!!

ST Depression can also reflect a reciprocal change, in effect showing you that there's an MI on the opposite side of the heart from where the lead is. There really quite a bit to learn about reading EKG's. I'm not bad at it, but there's much I still need to learn and get experience in before I consider myself even close to good at it.

Quote from Paramedic51What does a normal 12 lead with no st elevation but depression in some leads signify?