Test 1 Notes: Janet Flashcards Preview

Anesthesia -Scott Newman & Janet King > Test 1 Notes: Janet > Flashcards

Flashcards in Test 1 Notes: Janet Deck (44):
1

Analgesia

Absence of the awareness of pain, relief of pain without loss of consciousness

2

Pre-emptive analgesia

Prevention of pain before it starts

3

Anesthesia

Loss of sensation in a body part or the whole body

4

General Anesthesia

CNS Depression (loss of consciousness)
Analgesia
Amnesia (absence of memory)
Muscle relaxation

5

Local anesthesia

Temporary loss of sensation of local area
No sedation
Sometimes used with GA to enhance pain control
"caine"

6

Regional Anesthesia

Local anesthetic injected into major nerve plexus or close to spinal cord
Blocks nerve impulses to and from a large area

7

Dissociative Anesthesia

Disruption of nerve conduction pathways
CNS stimulant
Scrambles pathways so they never make it to the brain
Ex: Ketamine

8

Catalepsy

Malleable rigidity of muscles

9

Balanced anesthesia

Several agents used in combo
Mixture of small amounts several anesthetic agents to increase advantage, and decrease GA and side effects

10

Sedation/Tranquilization

Decreases stress and anxiety
Calms patient
Tranquilizers have NO analgesia

11

Neuroleptanalgesia

Combo of a sedative/tranquilizer & opioid
Causes profound sedation and analgesia
"conscious sedation"
Ex: Ace & Buprenorphine

12

Agonist

Drug that produces its effect by interacting with a specific receptor

13

Antagonist

Drug that occupies a specific receptor but produces minimal or no effect
Reversal Agent
Kicks off agonist

14

Anesthesia Machine uses

Deliver metabolic Oxygen
Vaporize anesthetic liquids to a vapor state
Control amount of anesthesia delivered to pt
Remove exhaled CO2
Remove exhaled toxic gas
Assist in ventilation

15

H Tank

Holds 2,000-2,200psi
Holds approx. 7000Liters
bigger than E tank

16

E Tank

Holds 2,000-2,200psi
Holds 600-660Liters

17

Universal color of Oxygen tank

Green

18

How to store oxygen

Strapped to wall
On machine
or on a rack

19

2 Functions of Oxygen

Metabolic needs
Carrier for the anesthetic gas

20

Oxygen Tank Pressure Gauge

Full tank= 2,000=-2,200psi
Always close after use!
Located near the oxygen tank

21

Pressure Regulator

Silver bullet below O2 pressure gauge
Reduces the pressure from cylinder to 50psi

22

O2 Flow Meter

Delivers calculated oxygen to the patient
Ball or Column
Sets flow rate
Turn on quickly!

23

Rebreathing system

for patients >7kg
aka "Circle system"
30ml O2/kg/min

NEVER LESS THAN 500ml/min

24

Non-Rebreathing system

for patients <7kg
aka NRB or Open system
200ml O2/kg/min

NEER LESS THAN 500ml/min

25

Universal Iso color

Purple

26

Universal Sevo color

Yellow

27

Precision vaporizer

Turns liquid anesthetic into a gas
Allows a controlled/precise amount of anesthesia given to pt.
When O2 is saturated it is called "fresh gas"

28

Res Bag

Inflatable rubber bag
Stores gases entering into the system
Allows observation of restorations
PosPressureVent. to blow off CO2 and prevent atelectesis

29

Unidirectional flutter valves

allows for a one way flow of gas to patient and allows gases to re-enter the machine

30

Scavenge

Removes exhaled toxic gases from patient and machine
OSHA requirement

31

Active Scavenge

Uses suction to draw gas into scavenger
On a wall mount and vents to outside

32

Passive Scavenge

F-Air
Uses pos. pressure of the gas machine to push gas into the scavenge
12 hours use or +50grams = expired!
Contains charcoal

33

Pressure relief valve

(Pop-off valve)
Vents excess gas to scavenge
Prevents pressure build up in system
OPEN OPEN OPEN!!!

34

When is the pop-off valve ever closed?

Ventilating patient
Checking for leaks
Closed system (rare)

35

CO2 Absorber

Only used with rebreathing system
Exhaled gases are filtered through the CO2 canister to eliminate CO2 before returning the gas back to the patient

36

Type of granules used in CO2 Absorbing canister

Soda Lime
Barium Hydroxide Lime

37

Exhausted granules will

Change in color (blue)
Become hard and brittle
about 6-8 hours of use

38

Pressure Manometer

Measures the pressure of gases within patient breathing system
measured in cmH2O
Used when ventilating patient
Should never exceed 15-20 cmH2O

39

Negative Pressure Relief Valve

allows room air to enter circuit if oxygen is discontinued

40

Oxygen flush valve

Bypasses flow meter and vaporizer
Delivers 100% O2 to res. bag
Shouldn't use during Sx unless needed--will wake up patient!

41

4 Steps to hooking up RB system

1. Y tubing to inhalation/exhalation port
2. Res bag to res bag port
3. Scavenge tubing
4. Pop-off valve OPEN

42

3 Steps to hooking up NRB system

1. Fresh gas hose to outlet port of precision vaporizer
2. Scavenge tubing
3. Pop-off valve OPEN

43

2 Reasons NRB systems are used for patients <7kg

Less resistance for respirations = less effort to breathe
Not enough tidal volume for circle system

44

Why is the NRB system flow rate higher?

To prevent rebreathing exhaled gases