Spinal anesthesia success in people with prior lower back surgery

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study compares spinal anesthesia success between adults with and without a history of lumbar spine surgery. It records needle attempts, procedure time, and anesthesia effectiveness during routine care, without altering standard practice. An internal pilot will enroll 25 patients per group to help estimate sample size for the main analysis, with results reported as group-specific success rates and 95% confidence intervals. Data collected will include demographics, prior surgery details, block characteristics, and early hemodynamic changes to explore potential associations with technical performance. Anesthesia decisions are made by treating clinicians not involved in the research team.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Age 18 years or older.
* American Society of Anaesthesiologists (ASA) physical status classification I-III.
* Scheduled to receive clinically indicated spinal anaesthesia for surgery, performed by clinicians other than the researchers collecting study data.
* Provision of written informed consent.

Exclusion Criteria:

* Any clinical contraindication to spinal anaesthesia.
* Refusal to participate or inability to provide written informed consent.
* Severe cognitive impairment preventing study assessments.
* Planned epidural or combined spinal-epidural anaesthesia.
* Inability to reliably record study data.

Where it's running

• Taksim Training and Research Hospital
  Istanbul, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Celal Kaya — Taksim Training and Research Hospital
• Study coordinator: Celal Kaya, MD
• Email: c.kaya47@hotmail.com
• Phone: 905435176760

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.