A randomized comparison of loss of resistance versus loss of resistance plus electrical stimulation: effect on success of thoracic epidural placement

Table 1 Patient characeteristics

	LOR	NS-LOR
Mean Age (yr)	63.2 ± 12.6	60.4 ± 15.4
Sex (M/F)	31/19	23/27
Mean Body mass index (kg/m²)	27.9 ± 5.8	29.0 ± 6.12
Ethnicity (Caucasian/African American/Asian/ Hispanic)	45/3/1/1	46/4/0/0
Site of surgery (Thoracic/Abdominal)	12/38	15/35
ASA Status (I/II/III/IV)	0/2/48/0	0/3/46/1

No significant differences
LOR loss of resistance, NS nerve stimulation, ASA American Society of Anesthesiologist

ISSN: 1471-2253