Equine Anesthesia: Janet Flashcards Preview

Anesthesia -Scott Newman & Janet King > Equine Anesthesia: Janet > Flashcards

Flashcards in Equine Anesthesia: Janet Deck (33):
1

Equine TPR

99-101
30-40bpm
10-20rpm

2

What abnormal heart rhythm is common is horses & what is the treatment?

2nd degree heart block
Atropine

3

What drug can improve gut motility in horses?

Lidocaine CRI

4

Horses MM are normally

Pale pink

5

Sedation and standing chemical restraint benefits

Horse remains standing (5 point stance)
Less risk of injury
Less time consuming

6

Which type of anesthesia is used for diagnostic and minor surgical procedures?

Sedation & standing chemical restraint

7

Which drug for standing chemical restraint is not recommended?

Acepromazine (phenothiazine tranquilizer)
-Vasodilation
-Penile prolapse

8

Two Alpha-2s that are used for standing chemical restraint?

Xylazine & Detomidine

9

What makes Detomidine the better choice for chemical restraint?

Longer duration
More potent
Less ataxia

10

How long should food be withheld before PA?

8-12 hours
-reduces gas production & weight in intestines
-less impairment of diaphragm/ventilation

11

What should done during the PA phase?

Withhold food
Place IVC catheter
Give fluids
Groom
Rinse mouth

12

What size IVC catheter is placed?

14ga 5"
Left jugular vein

13

What is the surgical fluid rate in horses?

10mls/kg/hr

14

What is different about giving fluids in horses?

No drip rate needed, fluids are wide open and a pressure infusion bag is used.

15

What is done during the grooming phase and why?

Brush- to keep dirt & mud out of surgical suite
Pick hooves & remove shoes- prevents injury
Rise mouth- removes hay so it wont be pushed into trachea

16

What is the most common PA drug used for horses?

Benzodiazepine tranquilizers
-calms, decreases anxiety, muscle relaxation, anti-seizure properties

17

Benzodiazepine tranquilizers are commonly used with ____ for induction.

Ketamine

18

Anticholinergics are not commonly used in horses due to ____, but can be used during surgery to treat ____.

Decreased GI motility
2nd degree heart block or bradycardia

19

What are benzodiazepines reversed with?

Flumazinil

20

2 PA Sedatives (Alpha-2 agonists)
More ____, longer ____, less likely to cause ____.

Xylazine & Detomidine
Potent
Duration
Ataxia

21

What are 3 effects of Alpha-2 agonists?

Sedation
Analgesia
Muscle Relaxation

22

What are 3 side effects of Alpha-2's

Bradycardia
Decreased CO
AV blocks

23

Most common opioid used in large animal & duration

Burtorphanol (torbugesic)
3-4hours

24

What is the most common recipe of equine IV anesthesia?
Why?

GKX or "Triple Drip"
Guaifenesin
Ketamine
Xylazine
This combo provides sedation, analgesia, muscle relaxation and unconsciousness

25

The equine anesthesia machine is different in that everything is ____ and a ____ is usually used instead of the res. bag

Bigger
Mechanical ventilator

26

What is the average ET tube size in large animal anesthesia?

26mm
14mm for foals
30mm for draft horses

27

Horses are intubated in ____ recumbency and it is a ____ intubation.

Lateral
Blind

28

What is the most common arrhythmia seen in LA anesthesia?

2nd degree heart block --treat with atropine if bradycardic

29

____ is VERY important during LA anesthesia so a ____ is used to monitor

Blood pressure
Direct arterial catheter

30

What arteries are used for the direct arterial catheter?

Transverse
Submandibular
Metatarsal
(choice depends on recumbency)

31

MAP & Systolic BP readings in LA anesthesia

MAP= >70mmHg
Systolic= >90mmHg

32

Equine recovery steps

Quiet, well padded room
Free or assisted recovery-- use ropes
Leave ET tube in as long as possible

33

____ is very common in horses during recovery due to ____. Intervention?

Hypoxia
airway obstruction
Hook up to oxygen