A loss-of-resistance technique using both air and saline.
Glantz
L
L
Gozal
Y
Y
Gertel
M
M
D000767:Anesthesia, Epidural / Q000295:instrumentation / Q000379:methods*; D004824:Epidural Space / Q000033:anatomy & histology*; D006801:Humans; D013594:Syringes