Table 2.

Questions and answers about the pharmacological properties of local anaesthetics (%)

	Correct	Incorrect
Presence of many protective layers around many myelinated and unmyelinated nerve fibres creates a major obstacle for the introduction of clinically used local anaesthetics	66.2	33.8
Local anaesthetics are divided into two groups as amide- and ester-structured	97.8	2.2
Sodium channels are the main target for the activity of local anaesthetics	88.4	11.6
Bupivacaine is ester-structured	55.3	44.7
Prilocaine is ester-structured	48.7	51.3
The addition of epinephrine enhances the effectiveness of the local anaesthetic	83.5	16.5
Maximum single dose for bupivacaine is 600 mg	70.8	29.2
Bupivacaine has the shortest half-life	84.5	15.5