MLK / FLK CRI

Loading doses:
Morphine: 0.5mg/kg IM
Lidocaine: 1 mg/kg IV
Ketamine: 0.25 – 0.50 mg/kg IV

CRI in a bag:
Morphine (15 mg/ml) 8ml/L
Lidocaine (20 mg/ml ) 50ml/L
Ketamine (100 mg/ml ) 1.2ml/L
@ 1ml/kg/hr
=
Morphine 2 ug/kg/min or 0.12 mg/kg/hr
Lidocaine 17 ug/kg/min or 1.0 mg/kg/hr
Ketamine 2 ug/kg/min or 0.12 mg/kg/hr

Can go up to 3ml/kg/hr without exceeding any dose ranges

Cats – until more data is obtained, lidocaine’s use in cats cannot be recommended due to potential toxicity issues. If it is used in cats, do not exceed 10 ug/kg/minute, and monitor carefully for seizure activity and cardiac abnormalities (bradycardia).

CATS – LIDOCAINE (20 mg/ml): 300 mg/500 ml diluent = 15 ml/500 ml diluent = 30 ml/1000 ml diluent
Deliver at 1ml/kg/hr fluid rate = 10 ug/kg/min or 0.6 mg/kg/hr

To substitute fentanyl for morphine at a dose equipotent to the morphine dose above add:
FENTANYL (0.05 mg/ml): 0.6 mg/500 ml = 12 ml/500 ml diluent = 24 ml/1000 ml diluent.
Deliver at 1ml/kg/hr fluid rate = 0.02 ug/kg/min or 0.0012 mg/kg/hr

Source: http://www.vasg.org/constant_rate_infusions.htm

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