Intravenous anesthesia and analgesia Flashcards Preview

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Flashcards in Intravenous anesthesia and analgesia Deck (16):
1

TIVA

Total intravenous anesthesia- induction and maintenance of anesthesia using only IV agents

2

PIVA

Partial intravenous anesthesia- induction and maintenance of anesthesia using both IV and inhalant agents

3

Balanced anesthesia

Combination of drugs/techniques

4

CRI

Constant rate induction

5

Inhalation anesthetic things

1. Equipment demanding
2. No cummulation
3. Easier to monitor and control anesthetic depth
4. Safe airways, 100% O2 mechanical ventilation

6

TIVA things

1. Easier technique
2. Drugs may cummulate
3. More difficult to monitor and control anesthetic depth

7

Does TIVA mean you don't give O2?

NO always beneficial regardless of anesthetic technique and agent choice

8

Drug administration strategies

Classical - give half of calculated dose slowly IV then bolus to effect

Bolus dosing- only small boluses up to effect as needed, not expected to be harmful

9

Advantages of bolus/digital system

May induce anesthesia with smaller doses

10

Disadvantages of bolus/digital system

First bolus may be too little
may give double dose initially if indicated

11

Drug administration strategies for TIVA

IV boluses or CRI

12

T/F: Elimination half-life of an agent after long CRI increases

True, accounts for cummulation effect

Depends on duration of CRI

13

Ideal agent for TIVA

1. Short acting
2. Non-cummulating
3. No active metabolites
4. Wide theraputic window
5. Provides smooth recovery

14

Alphalaxonoe TIVA

1. Does not cummulate if CRI is not super long
2. Excessive doses may lead to prolonged recovery and dysphoria esp in cats
3. Should combine opioid analgesics

15

Etomidate TIVA

1. Quick metabolism no cummulation
2. Inhibtiion of cortisol secretion
3. DO NOT USE

16

Ketamine based TIVA

1. Cummulation after large or repeated doses
2. Triple drip good for horses (guafenesin, xylazine, ketamine)
3. Suitable for field procedures