Table 1.

Comparison of Ink Location after Injection in Control Dogs Using Different Stimulation Thresholds and in Hyperglycemic Dogs

			Ink Location
Group	n	Final Threshold, mA	Within Nerve	Contacting Nerve	Distant from Nerve	Distance from Nerve, mm
Low mA	9	0.33 ± 0.08	0 (0)	6 (67)	3 (33)	0.4 ± 0.1
High mA	9	0.99 ± 0.03	1 (11)	4 (44)	4 (44)	0.4 ± 0.1
Hyperglycemia	6	0.35 ± 0.08	6 (100)	0 (0)	0 (0)

The number of cases (and the percent of total) is indicated for the patterns of ink distribution in which ink was found either within the epineurium (within nerve), in contact with the external aspect of the epineurium (up to nerve), or distant from the nerve, for which the average minimum distance is also shown. Final threshold and distance from the nerve are indicated as mean ± SD.

Final threshold = the current just capable of producing a motor response at the final needle position; n = number of injected specimens.