Electrolytes

Q) A 50 year old male undergoes pancreatectomy for Carcinoma head of pancreas. His pre op Hb was 9.2g% and during surgery he received 5 units of PRBC. In the post op period on the 2nd day he develops ECG changes. Work up is done for Myocardial Ischemia which is negative. What is the most common  cause of ECG changes here

a) Hyponatremia

b) Hyperkalemia

 

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