Exam 1: Baricity Concentrations w/ Mixtures

Question 1

Hyperbaric: Bupivacaine
*[ ] and mixture

Answer 1

0.75% w/ 8.25% Dextrose

Question 2

Hyperbaric: Lidocaine
*[ ] and mixture

Answer 2

5% w/ 7.5% Dextrose

Question 3

Hyperbaric: Tetracaine
*[ ] and mixture

Answer 3

0.5% w/ 5% Dextrose

Question 4

Hyperbaric: Procaine
* [ ] and mixture

Answer 4

10% w/ Water

Question 5

Isobaric: Bupivacaine
* [ ] and mixture (2 dif [ ])

Answer 5

0.5% or 0.75% w/ Saline

Question 6

Isobaric: Lidocaine
* [ ] and mixture

Answer 6

2% in saline

Question 7

Isobaric: Tetracaine
* [ ] and mixture

Answer 7

0.5% in saline

Question 8

Hypobaric: Bupivacaine
* [ ] and mixture

Answer 8

0.3% in water

Question 9

Hypobaric: Lidocaine
* [ ] and mixture

Answer 9

0.5% in water

Question 10

Hypobaric: Tetracaine
* [ ] and mixture

Answer 10

0.2% in water

Question 11

Supine: High Points

Answer 11

C3 L3

Question 12

Supine: Low Points

Answer 12

T6S2

Question 13

Makeup of LA (3)

Answer 13

Aromatic Ring [Lipophilic]
Intermediate Chain
Tertiary Amine [Hydrophilic]

Question 14

Why is the Intermediate Chain Important? (3)

Answer 14

Determines drug class, allergy potential, and metabolism

Question 15

What can the Tertiary Amine portion of LA accept?

Answer 15

Protons

Question 16

How to LA work?

Answer 16

Block inner Na+ Gate

Question 17

What Factors Influence Vascular Uptake? (5)

Answer 17

1. Site
2. Blood Flow to Tissue
3. Chemical Properties of LA
4. Metabolism
5. Addition of Vasoconstrictor

Question 18

Which LA do you avoid in heart pts?

Answer 18

Bupivacaine

Question 19

Which LA is used in a “walking epidural”

Answer 19

Ropivacaine