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A pilot study comparing routine mild sedation with midazolam versus no routine sedation during spinal anaesthesia placement for elective lower-limb orthopaedic surgery

Routine versus selective intravenous midazolam during spinal anaesthesia needling for elective lower-limb orthopaedic surgery: a single-centre pilot randomised trial (MIND-SPIN Pilot)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN17544940
Enrollment
60
Registered
2026-05-28
Start date
2026-04-07
Completion date
Unknown
Last updated
2026-06-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Procedural sedation in patients undergoing elective lower limb surgery under spinal anaesthesia Surgery

Interventions

Participants were randomised in a 1:1 ratio, stratified by age younger than 70 years versus 70 years or older, using random permuted blocks of variable size prepared in advance by an investigator not

Sponsors

Cappagh National Orthopaedic Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: 1. Adults aged 18 years or older 2. Scheduled for elective lower-limb orthopaedic surgery under spinal anaesthesia as the primary anaesthetic technique 3. American Society of Anesthesiologists (ASA) physical status I–III 4. Able to provide written informed consent 5. Able to complete study questionnaires in the validated study language

Exclusion criteria

Exclusion criteria: 1. Cases with planned general anaesthesia in combination with spinal anaesthesia from the outset 2. Known contraindication or documented hypersensitivity to benzodiazepines 3. Known history of severe paradoxical reaction to benzodiazepines 4. Severe cognitive, linguistic, or sensory communication barriers preventing valid questionnaire completion 5. Clinical situations where the attending anaesthetist determines that sedation is mandatory for patient safety prior to randomisation 6. Participation in another interventional clinical trial that may affect the outcomes of this study. Exclusion criteria are intentionally limited to preserve the pragmatic nature of the trial and to ensure that the pilot population is representative of the population that will be enrolled in the definitive trial.

Countries

Ireland

Contacts

Public ContactAlyssa Kaplan
alyssa.kaplan@nohc.ie+353 (01) 814 0400

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 11, 2026