Can doctors tell me what does left atrial abnormality and repol abnrm ischemia, diffuse leads suggests?

Several things. Laa means that your left atrium is either enlarged, thickened (hypertrophied), or both. Diffuse ischemia is a worrisome reading on an ekg and means you need further evaluation. An imaging stress test (with either echo or nuclear medicne) is the usual next step. Good luck.