Corrugated rubber drain

It drains too much. But following factors to be kept in mind.
1 it should decreasing. That is amount in first 4 hrs should be more than that in next 4 hrs.
2. Other parameters like pulse, bp, urine output, pallor and abd. softness should be okay.
3. Drainage generally continues for a day (24 hrs). Slight blood tinged should be okay.