A 60-year-old male patient, c/o breathlessness for last 10-12 days. He is a chronic alcoholic smoker. His CBC is normal, Blood urea 52.1, Creatinine 1.81, Uric acid 6.65, SGOT 71.7, Blood Sugar 169, Calcium 7.6, Po4 3.47.

ECG attached. What will be the probable diagnosis of breathlessness?