Initial placement and secondary displacement of a new suture‐method catheter for sciatic nerve block in healthy volunteers: a randomised, double‐blind pilot study

• DOI: 10.1111/anae.13933
• Publication Date: 2017-05-25T17:20:41Z
• Authors: T. S. Lyngeraa; C. Rothe; C. Steen‐Hansen; M. H. Madsen; C. B. Christiansen; A. M. Andreasen; L. H. Lundstrøm; K. H. W. Lange
• Keywords: Adult; Male; Catheters; Adolescent; Suture Techniques; Nerve Block; Pilot Projects; Sciatic Nerve; Healthy Volunteers; Catheterization; Young Adult; 03 medical and health sciences; 0302 clinical medicine; Double-Blind Method; Humans; Female; Exercise

Summary We performed a randomised double‐blind pilot study in 16 healthy volunteers to investigate the success rate for placing new suture‐method catheter sciatic nerve block. A was inserted into both legs of and each randomly allocated receive 15 ml lidocaine 2% through one leg saline other leg. Successful placement defined as 20% decrease maximum voluntary isometric contraction dorsiflexion ankle. Secondary outcomes were plantar flexion at ankle, surface electromyography cold sensation. After return motor sensory function, standardised physical exercises; injection same medication repeated followed by assessments. Fifteen (94%; 95% CI 72–99%) initial placements successful. The reduction affected peroneal more often than tibial nerve. Eleven (73%; 54–96%) catheters remained functional with block after exercise, maximal displacement 5 mm. Catheters secondary failure displaced between 6 10 One 1.8 mm that resulted less 20%. repeat test injection, 14 had loss Neither nor functions injected placebo. conclude can be placed high rate, but exercise may cause displacement.