Which of the following choices represents the lowest ratio,meaning greatest concentration,of vasoconstrictor in local anesthetic?
A)1:20,000
B)1:50,000
C)1:100,000
D)1:200,000

Question

Quizplus · Accepted Answer

The greatest concentration of vasoconstrictor found in a local anesthetic is 1:20,000.A smaller ratio indicates a higher percentage of vasoconstrictor.In most situations,it is desirable to use the highest ratio (lowest concentration of vasoconstrictor)possible.

Which of the Following Choices Represents the Lowest Ratio,meaning Greatest