<prompt> This ECG is most likely associated withConns syndromeMultiple myelomaRenal failureSIADH  <response>: Ans-2.C, If we focus on any one lead like lead 2 ,tall tented t waves are a seen.T wave is said to be tall when its amplitude is more than 50 of R wave.Cause is hyperacute mi or hyperkalemia.out of these options conns syndrome will cause hypokalemiat waves short or absent or invertedmultiple myeloma will lead to hypercalcemiaqt interval short in ECGrenal failure is mostly associated with hyperkalemia,while SIADH causes hyponatremianormal ECG or decreased qrs amplitude but no t wave abnormality 