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What is Tall 'T' waves are seen in: (Repeat) and explain in detail?
Ans: A (Hyperkalemia) Ref: Harrison 's Principles of Internal Medicine, 18ed.Explanation:ECG changes in HyperkalaemiaTall T waves (Earliest sign)Prolonged PR intervalWidened QRS intervalFlattened P wavesArrythmias including bradycardia, ventricular tachycardia or fibrillationSinus arrest or nodal rhythm with possible asystoleECG changes in HypokalaemiaFlattened T wavesST segment depressionProlonged QT intervalTall U wavesAtrial arrythmiasVentricular tachycardia or ventricular fibrillation