A 10-year-old child weighing 30 kg presents with a history of loose stools for 2 days. On examination, there is severe dehydration. Laboratory investigations are as follows. What is the initial management as per ISPAD guidelines?
| RBS | 550mg/dL |
| pH | 7.01 |
| Na+ | 158mEq/L |
| Urine glucose | 3+ |