Injectable Anaesthetics Flashcards Preview

Veterinary Nursing Anaesthesia and Analgesia > Injectable Anaesthetics > Flashcards

Flashcards in Injectable Anaesthetics Deck (16)
Loading flashcards...
1

What are the 3 things general anaesthesia is characterised by?

- Lack of pain
- Lack of memory
- Relatively depressed reflex responses

2

Explain balanced anaesthesia

patient pre-medicated with sedative and analgesic, given analgesic during and after surgery, maintained on inhalation agent to provide narcosis

3

What are the two types of anaesthetics?

Injectable
Inhalational

4

Name 2 reasons to use injectable anaesthetics?

- Induction prior to inhalational anaesthetics
- Sole agent for short duration procedures
- Supplement inhalational agents
- Suppress central nervous system stimulation in certain conditions

5

Name 2 routes of administration for injectable anaesthetics?

- I/V
- I/M
- S/C
- I/P

6

Name 2 things you should consider when choosing an admin route

effect
absorption
need for restraint
pain on injection

7

What does TIVA stand for

total intravenous anaesthesia

8

What is TIVA an alternative to?

Gaseous anaesthetic

9

Name 2 benefits of TIVA

-Avoids side effects of inhalational agents
-Useful when inhalational delivery would compromise access for surgery

10

What impacts the effects of I/V anaesthetic agents

concentration of plasma

11

When will unconsciousness occur

when brain reaches a critical concentration of the drug

12

When will consciousness begin to return

Drug level falls below critical level and less well-perfused organs start to take up the drug

13

What causes a variation in duration of action by injectable anaesthetics

- redistribution o drug from brain to less well-perfused tissues vary depending on:
1. Cardiac output
2. the mass of tissues available

14

Where are injectable anaesthetics metabolised

liver

15

What sites can be used for I/M administration?

- Quadriceps
- Lumbo-dorsal muscles
- Lateral Neck

16

What negatives are associated with I/M administration (name 3)

- can only be used for certain drugs
- dose required is usually much greater than what is required for I/V
- Takes longer to onset effect
- May be painful
- Associated with prolonged recovery
- Larger injection volumes can cause more pain