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CoolStick vs spray: which works better for checking anesthesia before C-Section?

NCT ID NCT06596486

Knowledge-focused Sponsor: Barts & The London NHS Trust Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compared two methods—CoolStick and ethyl chloride spray—for checking how well anesthesia numbs the skin before a planned C-section. 64 pregnant patients were included. The goal was to see which tool works better for measuring numbness to light touch and cold. This was not a test of a new treatment, but a way to improve how doctors assess anesthesia.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

64 people

The number who actually took part.

Started

Apr 2025

Finished

Jan 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

All eligible patients presenting for elective caesarean section will be invited to participate in the study.

Ages

18 years and older

Sex

Female participants only

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Pregnant patients presenting for elective caesarean section under spinal or combined spinal-epidural anaesthesia. Exclusion Criteria: * \< 18 years old * Unwilling or unable to give informed consent * Inability to understand written and/or verbal English * Allergy to stainless steel * Allergy to ethyl chloride spray

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Anesthesia

Contacts and locations

Locations

  • Newham University Hospital

    London, United Kingdom

  • The Royal London Hospital

    London, United Kingdom

  • Whipps Cross University Hospital

    London, United Kingdom

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