Exam 4 LA's part 2

Question 1

What is the max single dose for lidocaine?

Answer 1

300mg & 500mg with Epi

Question 2

What is the max single dose for Prilocaine?

Answer 2

600mg

Question 3

What is the max single dose for Mepivacaine?

Answer 3

400mg & 500mg w/ Epi

Question 4

What is the max single dose for bupivacaine?

Answer 4

175mg & 225mg w/ Epi

Question 5

Which LA’s (4) can be mixed with Epi?

Answer 5

Lidocaine, Mepivacaine, chloroprocaine & bupivacaine

Question 6

112.5 mg of bupivacaine w/ Epi & 250 mg of Lidocaine w/ Epi were both given during surgery, what are the % of each LA given & how much more can be given?

Answer 6

• 50% of each have been given.
• No more can be given as they are accumulative

Question 7

Which LA’s are not useful for topical use?

Answer 7

Procaine & chloroprocaine

Question 8

What is the recommended lidocaine w/ Epi dose for tumescent liposuction?

Answer 8

7 mg/kg or highly diluted 35-55 mg/kg

Question 9

How much lidocaine can 1 gm of SQ tissue absorb?

Answer 9

1 mg

Question 10

A Pt receiving a subarachnoid block is 5’10”, how much bupivacaine is given?

Answer 10

2mL (1mL for 5’ & 0.1mL per 1” over 5’)

Question 11

Hypobaric solutions will ____ & hyperbaric solutions will ___ in the subarachnoid space?

Answer 11

Rise & sink

Question 12

At what dermatome levels are the cardiac accelerators?

Answer 12

T1 – T4

Question 13

What is the sensory effect of spinal anesthesia block?

Answer 13

2 spinal segments cephalad & 2 motor segments below are affected

Question 14

With neuraxial anesthesia, which fibers are blocked first?

Answer 14

Myelinated preganglionic B-Fibers (SNS)

Question 15

With neuraxial anesthesia, which fibers are blocked last?

Answer 15

Myelinated A-delta & unmyelinated C fibers (Think motor)

Question 16

What is the dose for EMLA?

Answer 16

1-2 g/10cm2

Question 17

How long do you have to wait to perform skin grafts when using EMLA?

Answer 17

2hr

Question 18

How much epi or Neo can be mixed with LA for a spinal?

Answer 18

Epi 0.2mg Neo 2mg

Question 19

By how much do vasoconstrictors extend the time of a block?

Answer 19

By 1/3

Question 20

How much bicarb is added to 30mL of a chloroprocaine or bupivacaine?

Answer 20

1mL

Question 21

Which drugs prolong LA blocks?

Answer 21

• Clonidine
• Dexmedetomidine
• Dexamethasone
• Ketamine
• Mg

Question 22

If the name sodium comes before the drug name it is a?

Answer 22

Weak acid

Question 23

If the name sulfate comes after the drug name it is a?

Answer 23

Weak base