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A Journal on Anesthesiology, Resuscitation, Analgesia and Intensive Care
ORIGINAL ARTICLES ANESTHESIOLOGY
Minerva Anestesiologica 2004 September;70(9):625-9
language: English, Italian
Sciatic nerve block with lateral popliteal approach for hallux valgus correction. Comparison between 0.5% bupivacaine and 0.75% ropivacaine
Sinardi D. 1, Marino A. 1, Chillemi S. 1, Siliotti R. 2, Mondello E. 2
1 Anesthesiology and Intensive Care Department Istituto Ortopedico del Mezzogiorno d’Italia “F. Scalabrino”, Messina, Italy
2 Anesthesiological Section Department of Neurosciences Psychiatric and Anesthesiological Sciences University of Messina, Messina, Italy
Aim. In this study the authors compared the clinical profile of 2 local anesthetic drugs in the sciatic nerve block used during hallux valgus correction, a surgical procedure known to be post-operatively extremely painful. Since hallux valgus correction is painful post-operatively, many attempts have been tried to ensure a long-lasting analgesia. Block of the sciatic nerve appears to be the right choice balancing ease to performance, satisfaction of the patient and duration of action.
Methods. The authors investigated the use of 20 ml of 0.5% bupivacaine or 0.75% ropivacaine regarding the speed of onset, quality and length of duration of sciatic nerve block performed with a lateral popliteal approach. Sixty ASA I-III patients (aged 19-73 years) were enrolled in this trial. Written informed consent was asked and obtained. A 20 G 50 mm Teflon coated Crawford needle, delivering 0.5 mA at 2 Hz, was used to locate and block the sciatic nerve in the popliteal fossa with a lateral approach. Results. Patients in the ropivacaine group required about 13 minutes to achieve a complete block and about 16 minutes were needed in the bupivacaine group for the anesthesia to be complete. The length of analgesia was 16 h for the ropivacaine group and 13 h for the bupivacaine group. This kind of approach to block the sciatic nerve appeared to the authors to be very easy to perform, with the patient lying in a natural position. Surgical anesthesia required less than 30 min in both groups to be ready, while the ropivacaine group had a longer length of analgesia compared to the bupivacaine group.
Conclusions. Patient satisfaction was high in both groups.