What do you mean by 'J 'point elevation,how can u differentiate it from ST elevation?

J point is where qrs meets the st wave. J point elevation begins from the end of qrs and makes a concave up wave while a st elevation makes a convex down wave. J point elevation or notching is usually insignificant and cause for no concern

J point is situated in begging of  st wave. J point elevation makes little notch an ST elevation has no notch in begging of ST wave

the ECG trace and the baseline at a point 0.24 seconds after the j point is at least 0.9 mV usually representing 1mm or 1 small square in a limb lead or 0.29 mV 2 mm or 2 small squares in a precordial leads.

J point is where qrs meets the st wave. J point elevation begins from the end of qrs and makes a concave up wave while a st elevation makes a convex down wave