ClinicalTrials.gg
RecruitingNCT06935799Cryo-OneUpdated May 1, 2025

Effectiveness of One-Minute Versus Two-Minute Cryoanalgesia in Nuss Surgery

An interventional study of One minute intercostal nerves cryoanalgesia and Two minutes intercostal nerves cryoanalgesia in Pectus Excavatum and Funnel Chest, sponsored by Children's Memorial Health Institute, Poland. Recruiting at 1 site in Poland. Open to participants aged 12 Years to 18 Years. Per ClinicalTrials.gov, last updated 2025-05-01.

Sponsored by Children's Memorial Health Institute, Poland · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Mar 2026, 8 months ago, but the record still lists the study as recruiting.
  • Started Apr 2025; still recruiting 1 year 6 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
12 Years to 18 Years
Sex
All
01

Study summary

Intercostal nerve cryoanalgesia has become a popular method for managing postoperative pain after Nuss procedure, showing greater effectiveness compared to epidural anesthesia and patient-controlled analgesia. However, the optimal duration of cryoanalgesia remains unknown. Most protocols use a two-minute cryoablation, although histological studies show similar changes with both one-minute and two-minute applications.

This is a pilot, single-center, randomized, double-blind study comparing the effectiveness of one-minute versus two-minute cryoanalgesia in treating pain in patients undergoing correction of pectus excavatum using the Nuss procedure. The aim of the project is to evaluate the validity of the research procedure and determine the sample size for the main study. Preliminary data on postoperative pain intensity, opioid consumption, duration of surgery, length of hospital stay, and complications will be analyzed.

02

Conditions studied

  • Pectus Excavatum
  • Funnel Chest

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Keywords

  • cryoanalgesia
  • pain management
  • pectus excavatum
  • funnel chest
03

In context

Funnel Chest

79 studies on the registry are indexed under Funnel Chest; 10 are open to participants now.

This study's planned enrollment of 40 is close to the median of 40 across 46 interventional studies indexed under Funnel Chest.

Browse Funnel Chest studies →

Lead sponsor

Children's Memorial Health Institute, Poland is the lead sponsor of 14 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Pectus excavatum repair with MIRPE
  • Written consent for corrective surgery with intraoperative cryoanalgesia
  • Written consent to participate in the study
  • Age >12 and \< 18 years

Exclusion criteria

Exclusion Criteria:

  • History of previous thoracic surgeries
  • Reoperation for chest deformity
  • for cryoanalgesia
  • Presence of other conditions that may affect the course of the procedures and the assessment of their effectiveness and safety
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    One minute cryoanalgesia

    Procedure: One minute intercostal nerves cryoanalgesia

  • Active comparator
    Two minutes cryoanalgesia

    Procedure: Two minutes intercostal nerves cryoanalgesia

Interventions

  • ProcedureOne minute intercostal nerves cryoanalgesia

    One-minute cryoanalgesia will be applied bilaterally to each of the intercostal nerves from Th3 to Th7

  • ProcedureTwo minutes intercostal nerves cryoanalgesia

    Two-minutes cryoanalgesia will be applied bilaterally to each of the intercostal nerves from Th3 to Th7

06

What researchers measure

Primary outcomes

  1. Postoperative pain level according to Numerical Rating Scale (NRS)

    Time frame: 1 week

Secondary outcomes

  1. Opioid consumption

    Time frame: 1 week

  2. Duration of the surgery

    Time frame: 1 day

  3. Length of postoperative hospital stay

    Time frame: 1 week

  4. Occurence of early complications

    Time frame: 30 days from the surgery

07

Study locations

1 of 1 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Apr 2025 (actual). Primary completion is estimated for Mar 2026, 11 months after the start.

Of 31 interventional studies with no phase under Funnel Chest, half reached primary completion within 45 months of starting (the median), counting those still running; a quarter within 17 and three quarters within 68. This study's planned 11 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 3, 2025
First posted
Apr 20, 2025
StartActual
Apr 25, 2025
Primary completionEst.
Mar 2026
CompletionEst.
Mar 2026
Last update
May 1, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 1, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06935799
Lead sponsor
Children's Memorial Health Institute, Poland
Responsible party
Mateusz Ciopiński (Principal Investigator, Department of Pediatric Surgery and Organ Transplantation, CMHI, Children's Memorial Health Institute, Poland) — Principal investigator
First posted
Apr 20, 2025
Start date
Apr 25, 2025
Primary completion
Mar 2026 (estimated)
Completion
Mar 2026 (estimated)
Last update
May 1, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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