Neuraxial Anesthesia III Exam I Flashcards
(20 cards)
1
Q
What is baracity?
A
refers to the density of a LA solution compared to the CSF.
2
Q
- What is the density of an isobaric solution?
- What is the baracity?
- What is the behavior?
A
- The density of the LA is equal to the CSF
- An isobaric solution has a baracity of 1, which means the density matches the CSF.
- Behavior = tends to stay in place where it is injected.
3
Q
- What is the density of a hyperbaric solution?
- What is the baracity?
- What is the behavior?
A
- Density is greater than CSF
- A hyperbaric solution has a baracity greater than 1.
- Behavior = sinks within the CSF, moving downward (caudal) from the point of injection.
4
Q
- What is the density of a hypobaric solution?
- What is the baracity?
- What is the behavior?
A
- Density is less than CSF
- A hypobaric solution has a baracity of less than 1.
- Behavior = Rises with the CSF, moving upward (cephelad) from the point of injection.
5
Q
Label the baracity of a SAB
A
6
Q
What are the examples of isobaric local anesthetics for SAB? (4)
A
- Bupivicane 0.5% in saline
- Bupivicane 0.75% in saline
- Lidocaine 2% in saline
- Tetracaine 0.5% in saline
7
Q
What are the examples of hyperbaric local anesthetics for SAB? (4)
A
8
Q
What are the examples of hypobaric local anesthetics for SAB? (3)
A
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20
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