Medicine A 12-year old child with renal tubular acidosis type I is having muscle cramps and weakness. ECG shows all except: A T wave inversion with U waves B ST depression C Hea rate of 75 beats per minute D Absent P waves 💡 Explanation A 12-year old child with renal tubular acidosis type I is having muscle cramps and weakness. ECG shows all except: ✓ Correct Answer: D. Absent P waves