Equine Anaesthesia Flashcards Preview

NSULA Vet Tech Surgery and Anaesthesia > Equine Anaesthesia > Flashcards

Flashcards in Equine Anaesthesia Deck (49):
1

How long do you withhold food

4-8hr

2

Describe general preparation for equine patient

-Withhold food 4-8 hr.
-Pull or pad all shoes
-Clip surgical site before induction; groom/wipe horse
-Place jugular catheter
-Physical exam/weigh
-Rinse mouth with water before induction
-Clean feet

3

what are equine patients prone to getting under anesthesia

respiratory acidosis

4

why is proper padding and positioning important

to prevent
-cardiopulmonary compromise
-neuropathies
-myopathies :

5

Why is assisted or controlled ventilation important with prolonged procedures

to maintain normal arterial CO2 levels

6

Preanesthetic evaluation: History

past or current medical hx

drug hx

7

Preanesthetic evaluation: Physical evaluation

age
weight
gender
temp
cardiopulmonary function
lameness or ataxia

8

Preanesthetic evaluation: Laboratory evaluation

CBC
total protein
fibrinogen
serum chemistries / electrolytes

9

Xylazine IV dose

0.2-0.5 mg/lb

10

Xylazine IV onset and signs

within 2-3 min

drooping head
prolapse of penis

11

Xylazine IV duration

30 min

12

Xylazine IM dose

0.5-1 mg/lb

13

Xylazine IM Onset

10-15 min

14

Xylazine IM Duration

30 min

15

What are 2 complications that may occur with Xylazine

Sinus bradycardia

first and second degree heart block

16

Detomidine IV dose

5-10 mcg/lb

17

Detomidine IM dose

10-20 mcg/lb

18

Acepromazine dose

0.5mg/kg

19

Acepromazine onset

5-20 min

20

Acepromazine duration

1.5-3 hr

21

what effect can happen when using acepromazine

hypotensive effect can last 12 hrs

22

ET Tube Material

-30, 26, 20, or 15 mm ID
-Lubrication jelly
-25 and/or 60 cc syringe
-Cotton mouth gag or speculum (2” PVC pipe)

23

IV cath Material

-10, 12, or 14 gauge
-Tubing
-flush
- fluids
-drugs
-Local anesthetic
-clippers
-prep solutions

24

What material is needed before going into surgery

-ET Tube supplies
-IV cath supplies
-Restraint/padding equipment
-Monitoring equipment
-Anesthesia machine, checked
-Oxygen flow rate 1L/250 lb; minimum 3L/1000 lb

25

Ketamine dose

0.7-1mg/lb IV
we use 1mL/100lb

26

What can you administer ketamine after and what can you administer it with

Admin after Xylazine, and detomidine

admin with diazepam after alpha-2 agonist

27

What is Guaifenesin (GG) used for

skeletal muscle relaxant

28

what are the toxic signs of Guaifenesin

apneustic breathing
muscle rigidity
hypotension

29

what is Guaifenesin usually mixed with

Ketamine or thiopental

30

what is diazepam given before or with

given before thiopental or given with ketamine

31

Thiopental sodium can cause what signs

cardiovascular depression
transient apenea

32

Thiopental sodium can be given with what drug

Guaifenesin (GG)

33

telazol dose

0.25-0.5 mg/lb

34

Telazol signs

greater muscle relaxation
longer duration
greater respiratory depression

35

by which route can you give iso or sevo to a foal

nasotracheal tube or mask

36

Explain endotracheal intubation steps

-Performed blindly
---Bite block between incisors
---Advance tube into trachea
---Repeat if unsuccessful
-Secure tube with gauze
-Connect to anesthesia machine
-Inflate cuff

37

which rebreathing bags are standard for equine patients

15 or 30 L bags

(rebreathing bag 5X tidal volume)

38

How much should you inflate the cuff of the endotracheal tube

50-75 mL ari/ cuff for 1000 lb horse

DO NOT OVERINFLATE

39

What is Total IV anesthesia (TIVA)

mixture of GG, ketamine, Xylaxine delivered to effect

40

What should you monitor while your patient is under anesthesia

- body temp
- all vital signs
- depth of anesthesia
- blood pressure
-iv fluids

41

How long should you admin o2 after surgery

until patient is swallowing

42

what should you have available during recovery

Tranquilizers
ropes
emergency drugs

43

What position should the head be in during recovery and why

head and muzzle should be down

allows draninage

44

In what cases should you admin sedative to an adult hours during recovery

-excessive nystagmus
-oculogyria
-excessive muscle tremors
-disorientation and loss of equilibrium

45

Name 10 common anesthetic problems in equine patients

1)Hypotension
2)Hypoventilation
3)Hypoxemia
4)Bradycardia
5)Difficulty maintaining adequate anesthetic depth
6)Metabolic acidosis
7)Under- or over-hydration
8)Nasal edema and/or upper airway obstruction
9)Poor or prolonged recovery
10)Neuropathy and/or myopathy

46

What is considered bradycardia

HR <30bpm

47

what is considered hypotension

MAP <50 mm Hg

48

what is considered Hypoventilation

PaCO2 > 55mm Hg

49

what is considered Hypoxemia

PaO2 <60mm Hg
SpO2 should be >90%