Method to Reduce the False-Positive Rate of Loss of Resistance in the Cervical Epidural Region

Table 1

Study patient characteristics and the final depth of the cervical epidural space.

Parameter	Air group; ()	Contrast group; ()	value
Age (yr)	55.65 ± 12.52	52.58 ± 13.87	0.441
Height (cm)	167.85 ± 8.03	165.68 ± 7.35	0.361
Weight (kg)	65.81 ± 8.70	62.84 ± 10.01	0.295
BMI (kg/m^2)	21.71 ± 6.77	22.79 ± 2.49	0.509
Diagnosis ()
C-HIVD	22	34
C-SS	12	11
Needle tip approach ()
Median approach	0	1
Paramedian approach	34	44
Right	18	24
Left	16	20
Final depth (cm)	6.25 ± 0.72	6.69 ± 0.85	0.062

BMI: body mass index; C-HIVD: cervical herniated intervertebral disc; C-SS: cervical spinal stenosis.