An observational study in Anesthesia; Adverse Effect, Spinal and Epidural, sponsored by Consorci Sanitari de Terrassa. Recruiting at 1 site in Spain. Per ClinicalTrials.gov, last updated 2026-07-30.
Sponsored by Consorci Sanitari de Terrassa · Observational
The objective here is to quantify the number of punctures and redirections during routine practice in the anesthesiology department, verify the final angle of incidence and the sac-skin distance by ultrasound, and determine the optimal, maximum, and minimum angles that would have allowed successful punctures. The objective is also to correlate ultrasound and plain X-ray distances, if available. These angles would then be inferred in advance in patients who must undergo spinal anesthesia, assessing whether this prior estimate reduces the number of punctures and redirections.
Protractors and visual guides may be used to guide the exact insertion angle according to the skin-to-dural sac distance or depending on the skin-to-transverse process distance when the midline approach is not feasible.
Consorci Sanitari de Terrassa is the lead sponsor of 41 studies on the registry; 15 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Any patients requiring spinal anaesthesia
Inclusion Criteria: patients submitted to spinal anaesthesia -
Exclusion Criteria: none
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Description of usual needle insertion attempts and redirections.
Other: Measurement of needle insertion angles
Individualization of needle insertion angle depending on the skin to dural sac distance by means of visual guides and adapted protractors
Number of needle insertion attempts
Total number of times that the spinal needle is introduced in the skin
Time frame: From September 2025 to september 2026.
Number of needle redirections
Total number of needle redirections in all insertion attempts in a single patient.
Time frame: From september 2025 to september 2028
Plan to share: No
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Consorci Sanitari de Terrassa