Research Article

Measurements of Epidural Space Depth Using Preexisting CT Scans Correlate with Loss of Resistance Depth during Thoracic Epidural Catheter Placement

Table 1

Patient characteristics of sample ().

Continuous variableMean (SD)Range

Age56.8 (15.1)20–90
BMI28.1 (7.0)15.5–53.9
CT epidural skin distance (mm)46.7 (11.7)27–86
Loss of resistance depth (cm)6.1 (1.1)3.5–8

Categorical variableNumber%

Male (%)8551
BMI > 35 (%)2113
Epidural level (%)

LOR depth > 8 classified as 8 (see text).