Effects of adding a combined femoral and sciatic nerve block with levobupivacaine and clonidine to general anaesthesia in femoropopliteal bypass surgery: A randomised, double-blind, controlled trial.

Background: Adding a regional block to general anaesthesia can prevent postoperative pain and improve peripheral circulation.

Objective: To seek improved postoperative analgesia and care due to a long-acting combined femoral and sciatic nerve block in patients undergoing femoropopliteal bypass surgery.

Design: A randomised, double-blind, controlled trial.

Epidural versus continuous preperitoneal analgesia during fast-track open colorectal surgery: a randomized controlled trial.

Background: Effective postoperative analgesia is essential for early rehabilitation after surgery. Continuous wound infiltration (CWI) of local anesthetics has been proposed as an alternative to epidural analgesia (EA) during colorectal surgery. This prospective, double-blind trial compared CWI and EA in patients undergoing elective open colorectal surgery.