ClinicalTrials.gg
CompletedNCT05570097Updated Mar 28, 2023

Cryoanalgesia to Prevent Acute and Chronic Pain Following Nuss Procedure

An interventional study of intercostal nerves cryoanalgesia in Funnel Chest and Excavatum, Pectus, sponsored by Pomeranian Medical University Szczecin. Completed at 1 site in Poland. Open to participants aged 10 Years and older. Per ClinicalTrials.gov, last updated 2023-03-28.

Sponsored by Pomeranian Medical University Szczecin · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Non-randomized
Ages
10 Years and older
Sex
All
01

Study summary

This Study study compared standard therapy (multimodal and regional analgesia) versus a novel approach (Cryoanalgesia combined with bilateral erector spine plane block and multimodal analgesia) in subjects undergoing minimal invasive modyfied Nuss procedure (thoracoscopy).

Read the detailed description

Funnel chest deformation is a great challenge for therapeutic teams due to severe pain in the postoperative period as well as chronic pain. The use of many analgesic drugs, including opioids, is associated with adverse side effects, difficulties with rehabilitation, an increased risk of complications, prolonged hospitalisation, and the cost of the procedure. Cryoanalgesia as a part of multimodal analgesia along with the education and prehabilitation of the patient according to the novel original educational - training application 'Back on Feet' as well as the interdisciplinary care in accordance with the enhanced recovery after surgery (ERAS) protocol, which has a real impact on the optimisation of perioperative care.

This Before - After Study is a single institution pilot study designed to compare standard therapy (control group: regional analgesia: intrapleural or bilateral erector spine plane block) versus a novel approach (interventional group: Cryoanalgesia combined with bilateral single shot erector spine plane block) to address the need for better management of acute and long-term pain in the pediatric population diagnosed with funnel-chest and treated using the modyfied Nuss method.

First group received a standard care according to Polish guidelines. The data of control group analysed and the interdisciplinary team work protocol will be introduced to the interventional group. The interventional group was prepared according to prehabilitation with the 'Back on feet' application and perioperative ERAS protocols. The patients of interventional group received intraoperative cryoanalgesia using the Cryo-S Painless device (Metrum - Cryoflex Polska Limited) as an additional procedure to multimodal analgesia. This is the first time that the cryoanalgesia procedure was performed in children in Poland.

The aims of the study were the assessment the effectiveness of cryoanalgesia as a method of acute and long-term pain control, safety of the method and the impact of preoperative preparation according to the 'Back on Feet' program introduced as a part of ERAS protocol.

Specific Aim 1: To determine if, compared with current analgesia, the addition of cryoanalgesia decreases the incidence and severity of post-surgical pain.

Hypothesis 1a (primary): The severity of surgically-related pain was significantly decreased from postoperative day 2 with the addition of cryoanalgesia as compared with patients receiving solely standard-of-care treatment.

Hypothesis 1b: The incidence and severity of chronic pain was significantly decreased 3 months following surgery with the addition of cryoanalgesia as compared with patients receiving solely standard-of-care treatment.

Specific Aim 2: To determine if, compared with current analgesia, the addition of cryoanalgesia improves postoperative functioning.

Hypothesis 2a: Following modyfied Nuss procedure the range of motion and independence was significantly increased in the 2 postoperative day following operation with the addition of cryoanalgesia as compared with patients receiving solely standard-of-care treatment.

The results were compared in terms of demographics, pain levels, side effects of the pain relief medications in the postoperative period, quality and length of rehabilitation, patient satisfaction using the Quality of Life by modyfied Nuss questionnaire, and the total costs of hospitalization.

02

Conditions studied

  • Funnel Chest
  • Excavatum, Pectus

Browse trials for

Keywords

  • nuss procedure
  • ERAS
  • cryolesia
  • cryoanalgesia
03

In context

Funnel Chest

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

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

Browse Funnel Chest studies →

Lead sponsor

Pomeranian Medical University Szczecin is the lead sponsor of 69 studies on the registry; 8 are open to participants now.

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

04

Who can participate

Ages eligible
10 Years and older
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

  • Patients undergoing pectus excavatum repair with modyfied minimal invasive thoracoscopic NUSS technique
  • aged 10 years or above 10
  • signed for cryoanalgesia

Exclusion criteria

Exclusion Criteria:

  • Age of 9 years or below
  • Refuse to receive cryoanalgesia or regional analgesia as primary pain relief
  • Any to cryoanalgesia
  • Difficult follow-up for geographical reasons and/or impossibility by the patient to understand how to perform self-measurements
Terms in these criteria, in plain language(2)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • No intervention
    "the before" group

    Control group as a standard therapy in Poland (regional analgesia: intrapleural or bilateral erector spine plane block added to multimodal analgesia).

  • Experimental
    "the after" group

    During modyfied Nuss thoracoscopy the intraoperative Cryolesia of at least 5 intercostal nerves added to regional analgesia: bilateral erector spine plane block and multimodal therapy.

    Device: intercostal nerves cryoanalgesia

Interventions

  • Deviceintercostal nerves cryoanalgesia

    Intraoperative Cryolesia of at least 5 intercostal nerves added to regional analgesia: bilateral erector spine plane block and multimodal therapy.

06

What researchers measure

Primary outcomes

  1. The worse pain occurence during first 24 hours after operation

    Numeric pain score. Range from 0 to 10.

    Time frame: up to 24 hours after operation

Secondary outcomes

  1. Analgesic consumption post operation

    Total analgesic (including opioids) consumption for previous 24 hours

    Time frame: Postoperative days 0, 1, 2, 3, 4, 5,6, as well as months 1 and 3

  2. Thoracic hypo-aesthesia occurence

    Cold test assessment (Yes/No)

    Time frame: up to 24 hours after operation

  3. Assessment of sleeping quality

    Collect difficulties of sleeping due to pain? (binary answer: yes or no; not based on a scale or instrument)

    Time frame: Postoperative days 1, 2, 3, 4, 5 ,6

  4. Postoperative nausea and vomiting (PONV) occurence

    binary answer: yes or no; not based on a scale or instrument

    Time frame: Postoperative days 1, 2, 3, 4, 5 ,6

  5. Residual wound or chest pain occurence

    The chest or wound chronic pain occurrences

    Time frame: Postoperative months 1, 3

  6. Total narcotic use post-operation

    Total dose and number of days of opioids used during hospitalization

    Time frame: 0-6 postoperative days

  7. Cost Analysis

    total costs of hospitalization

    Time frame: estimated 1 week

  8. Duration of hospitalization

    the length of the time (in days) spent in the hospital

    Time frame: estimated 1 week

07

Study locations

1 site
  • Pomeranian Medical University
    Szczecin, 71-252, Poland
08

References and documents

Publications

  • Graves CE, Moyer J, Zobel MJ, Mora R, Smith D, O'Day M, Padilla BE. Intraoperative intercostal nerve cryoablation During the Nuss procedure reduces length of stay and opioid requirement: A randomized clinical trial. J Pediatr Surg. 2019 Nov;54(11):2250-2256. doi: 10.1016/j.jpedsurg.2019.02.057. Epub 2019 Mar 17. PubMed 30935731 ↗

Individual participant data

Plan to share: Yes — We invite others researchers to collaboration as multicenter study.

Supporting information: Study protocol

Time frame: up to 12 months from the beginning of the study

Access criteria: by contact to Principal Investigator

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 28, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05570097
Lead sponsor
Pomeranian Medical University Szczecin
Responsible party
Sławomir Zacha (Principal Investigator, Pomeranian Medical University Szczecin) — Principal investigator
First posted
Oct 6, 2022
Start date
Sep 28, 2022
Primary completion
Oct 10, 2022
Completion
Dec 10, 2022
Last update
Mar 28, 2023

Study contacts

Jowita Biernawska, MD PhD
study director · Pomeranian Medical Universitet Szczecin

Oversight

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

Not currently enrolling

This study is completed, as verified in Mar 2023. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion