Spinal Anaesthesia for Knee Arthroscopy: Does Lignocaine Shorten the Effect of Bupivacaine

Spinal Anaesthesia for Knee Arthroscopy: Does Lignocaine Shorten the Effect of Bupivacaine?

The purpose of the study is to investigate if a small amount of lignocaine added to bupivacaine for spinal anesthesia to patients planned for arthroscopic knee surgery, can shorten the duration of the sensoric and the motoric blockade.

Inclusion Criteria:

• The patient want spinal anaesthesia
• No contradictions against spinal anaesthesia
• Healthy people (ASA-score 1 or 2)
• Body mass index < 35 and between 155 and 190 cm

Exclusion Criteria:

• Known allergic reactions to planned drugs
• Neurologic disturbances
• Diabetes