Randomized Controlled Trial
Comparison of 2% lignocaine with adrenaline and fentanyl, 0.75% ropivacaine and 0.5% levobupivacaine for extension of epidural analgesia for urgent caesarean section after low dose epidural infusion during labour.
Anaesth Intensive Care. 2008 Sep 1;36(5):659-64.
Randomized Controlled Trial
Epidural lidocaine-bicarbonate-adrenaline vs levobupivacaine for emergency Caesarean section: a randomised controlled trial.
Anaesthesia. 2008 Mar 1;63(3):243-9.
Review
A systematic review of randomized controlled trials that evaluate strategies to avoid epidural vein cannulation during obstetric epidural catheter placement.
Anesth. Analg. 2009 Apr 1; 108 (4): 1232-42.