Oxygen flow rates homework

What is the appropriate range of oxygen flow rate settings on your flowmeter when using a semi-closed rebreathing system for a 33 lb dog during induction using drugs given by IV injection, when making changes in anesthetic depth, and during recovery (the answer is the same for all of these situations)?

Set 1 L/min (accept 0.8 L/min, 0.9 L/min, or 1.5 L/min also)

33 lb/ 2.2 lb/kg X 50 to 100 ml/kg/min = 750 - 1500 ml/min = 0.75 - 1.5 L/min

Calculate the appropriate range of oxygen flow rates using a semi-closed rebreathing system for a 55 pound dog during induction using drugs given by IV injection. At what number would you set your flow meter?

I would choose 2 L/min as midrange to start.

55 lb/2.2 lb/kg X (50 - 100 ml/kg/min) = 1250 ml/min - 2500 ml/min

= 1.25 L/min - 2.5 L/min

Calculate the appropriate range of oxygen flow rates for an 8.8 pound cat using a Mapleson D non-rebreathing system. At what number would you set your flow meter?

Set flow meter at 1.5 L/min

8.8 lb/2.2 lb/kg X (300 - 400) ml/kg/min = 1200 ml/min - 1600 ml/min

= 1.2 L/min - 1.6 L/min

Calculate the appropriate range of maintenance oxygen flow rates for a 154 pound dog using a closed (total) rebreathing system. At what number would you set your flow meter?

I would choose 0.5 L/min or 0.6 L/min as midrange to start.

154 lb/2.2 lb/kg X (5 - 10 ml/kg/min) = 350 - 700 ml/min

= 0.35 L/min - 0.7 L/min

Set flow meter at 0.4 L/min or 0.5 L/min or 0.6 L/min or 0.7 L/min

Calculate the appropriate range of maintenance oxygen flow rates for a 77 pound dog using a semi-closed (partial) rebreathing system. At what number would you set your flow meter?

I would choose 1 L/min as midrange to start.

77 lb/2.2 lb/kg X (20 - 40 ml/kg/min) = 700 ml/min - 1400 ml/min

= 0.7 L/min - 1.4 L/min

Set flow meter at 0.7 L/min or 0.8 L/min or 0.9 L/min or 1 L/min

Calculate the appropriate range of oxygen flow rates for a 33 pound dog using a semi-closed (partial) rebreathing system if minimal rebreathing is desired. At what number would you set your flow meter?

I would choose 3.5 L/min or 4 L/min as midrange to start.

33 lb/2.2 lb/kg X (200 - 300 ml/kg/min) = 3000 ml/min - 4500 ml/min

= 3 L/min - 4.5 L/min

Set flow meter at 3 L/min or 3.5 L/min or 4 L/min or 4.5 L/min