INFUSION RATE CALCULATIONS

1
INFUSION RATE CALCULATIONS
2
REVIEW ANESTHESIA DRUG DOSE
3
ATROPINE

• Dose- 0.4 to 0.6 mg IM 45 to 60 minutes prior to
  anesthesia

4
PROMETHAZINE

• Dose- 25 to 50 mg IM, slow IV, rectal, or PO 30
  minutes prior to anesthesia

5
DIAZEPAM

• Induction
• Dose- 0.3 to 0.5 mg/kg slow IV
• Muscle relaxation
• Dose- 1.0 to 2.0 mg slow IV prn

6
KETAMINE

• Induction
• Dose- 1.0 to 2.0 mg/kg slow IV
• Maintenance
• Dose- 30 to 90 mcg/kg/min IV drip

7
MIDAZOLAM

• Induction
• Dose- 0.15 to 0.4 mg/kg/ slow IV

8
MORPHINE

• Maintenance dose 2 to 20 mcg/kg/ IV drip

9
NALOXONE

• Overdose - 1.0 to 2.0 mg slow IV q 5 minutes up
  to 3 times
• Maintenance - 400 mcg IV drip over one hour

10
FLUMAZENIL

• Reversal of conscious sedation
• Dose- 0.2 to 1.0 mg slow IV q 20 minutes _at_ 0.2
  mg/min
• Overdose
• Dose- 3.0 to 5.0 mg slow IV _at_ 0.5 mg/min

11
INTRAVENOUS INFUSION FORMULA

• Set up

50ml x 2400mcg x 60gtts 400mg 1
min 1ml
12
INTRAVENOUS INFUSION FORMULA

• Reduce

1ml x 2.4mg x 60gtts 8mg 1min
1ml
13
INTRAVENOUS INFUSION FORMULA

• Cancel

1 x 2.4 x 60gtts 8 1min 1
14
INTRAVENOUS INFUSION FORMULA

• Multiply

144gtts 8min Can this be reduce ?
15
INTRAVENOUS INFUSION FORMULA

• Reduce

144gtts 8min to 18gtts 1min
16
PR0BLEMS

• Patient is a 22 year old, 70 kg male with a GSW
  to the left thigh. Pulse 90 s/r, resp 18 d/r, BP
  110/78, temp 98.4. Patient is in fair condition
  and is stable

17
PR0BLEMS

• What dose and route for preanesthetic atropine
  will you give?

18
PR0BLEMS

• preanesthetic atropine, 0.5mg IM

19
PR0BLEMS

• What is the dose and route for preanesthetic
  promethazine for this patient?

20
PR0BLEMS

• preanesthetic promethazine, 50 mg IV slow

21
PR0BLEMS

• What is the IV induction dose of diazepam for
  this patient?

22
PR0BLEMS

• IV induction dose of diazepam, 35mg
• What route/rate?

23
PR0BLEMS

• route/rate, IV _at_ lt 5mg/min

24
PR0BLEMS

• With an infusion setup of 2.0 grams of ketamine
  in a 1000ml bag of 0.9 NaCl connected to a
  microdrip administration set what is the minimum
  maintenance rate in gtts/min?

25
PR0BLEMS

• 63gtts/min

26
PROBLEMS

• What is the maximum infusion rate? Multiply
  minimum by 3.

27
PROBLEMS

• 189gtts/min

28
PR0BLEMS

• How long will this same infusion setup last at
  the maximum maintenance rate (must know how many
  drops are in the bag)?

29
PR0BLEMS

• Take the ml in the bag X the drop of the
  administration set drops in bag.

30
PR0BLEMS

• 1000ml X 60gtts 60,000gtts

31
PR0BLEMS

• Then divide 60,000gtts by 189gtts.

32
PR0BLEMS

• 317minutes (About 5 hours and 28 minutes )

33
PR0BLEMS

• At the minimum maintenance rate?

34
PR0BLEMS

• At the minimum maintenance rate?
• Just multiply maximum by 3

35
PR0BLEMS

• Just multiply maximum by 3 960 minutes

36
PR0BLEMS

• A 50ml bolus from the maintenance bag will give
  the patient how much Ketamine?

37
PR0BLEMS

• 2000mg divided by 1000ml 2mg per 1ml

38
PR0BLEMS

• 2mg X 50ml 100mg Ketamine

39
PR0BLEMS

• What is the dose and rate of flumazenil for a
  benzodiazepine overdose in this patient?

40
PR0BLEMS

• The dose and rate of flumazenil for a
  benzodiazepine overdose, 5mg IV _at_ 0.5mg/min

41
PR0BLEMS

• What is the maximum amount of 2 lidocaine with
  epinephrine that can be given to this patient (
  in ml )?

42
PR0BLEMS

• The maximum amount of 2 lidocaine with
  epinephrine that can be given to this patient (
  in ml ), 490mg.
• How many ml?

43
PR0BLEMS

• 2 lidocaine with epinephrine 20mg per ml.
• 490mg divided by 20mg per ml how many ml?

44
PR0BLEMS

• 24.5 ml