Hera Lal's 10 year old child present in casualty with snakebite since six hours. On examination no systemic signs are found & lab investigation are normal except localized swelling over the leg of < 5 cm. Next step in management would be -
Incision & suction of local swelling I/V polyvalent antivenom Subcutaneous anti venom at local swelling Observe the patient for progression of symptoms wait for antivenom therapy