If pt has low urine output; 1. Normal urine output, adult <1cc/kg/hr, children <0.5cc/kg/hr. 2. Always flush the CBD and check for any blockage. 3. Check BP and hydration status status as hypoperfusion can lead to low urine output. 4. Check for any sign of profuse bleed or sepsis. 5. Can allow fluid resus if indicated and permisible.