A 40yo male with pre-existing glumerulonephritis having proteinuria and hematuria suddenly deteriorates and presents with oliguria and serum K+=7.8mmol/L, urea=13mmol/L, creat=342mmol/L, GFR=19mL/h. The best management would be?
a. Calcium supplement
b. Calcium resonate enema 30g
c. 10units insulin with 50% dextrose
d. Nebulized salbutamol
e. 10ml of 10% calcium gluconate
f. Hemodialysis urgent