Anaesthetics

Question 1

Possible anaesthetic

Answer 1

Lidocaine 4 %
Tetracaine 0.5% + 1%
Oxbuprocaine 0.4%
Proxymebacaine 0.5%

Question 2

Letracaine 0.5% + 1% duration

Answer 2

20 mins

Question 3

Oxybuprocaine 0.4%. Duration

Answer 3

15 mins

Question 4

Proxymetacaine 0.5% duration

Answer 4

15 mins

Question 5

Lidocaine 4% duration

Answer 5

30 mins

Question 6

Proxymetacaine 0.5% advantages

Answer 6

Stings least
Less puncate staining than tetracaine

Question 7

Prosymetacaine0.5% disadvantages

Answer 7

Have to allow 60 seconds before addition of another topical agent

Question 8

Oxybuprocaine 0.4% advantages

Answer 8

Often used in tonometry
Produces less punctate staining than tetracaine

Question 9

Lidocaine 4% advantages

Answer 9

Available with fluorescein
Useful alternative from ester groups as an amide - non allergenic

Question 10

Tetracaine 0.5% or 1% Disadvantages

Answer 10

Caution with hypersensitivity
Above 1% can damage cornea

Question 11

Lidocaine 4% storage temperature

Question 12

Tetracaine 0.5% or 1% storage temperature

Question 13

Oxybuprocaine 0.4%

Answer 13

Room temperature

Question 14

Proxymeracaine 0.5%

Answer 14

2-8 degrees