CClinicalTrials.gg
Status unknownNCT04195009Updated Dec 11, 2019

Impact of Suppressing Surgical Stress Reaction on Postoperative Inflammation.

An observational study in Inflammation and Postoperative Pain, sponsored by AZ Sint-Jan AV. Status unknown at 1 site in Belgium. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-12-11.

Sponsored by AZ Sint-Jan AV · Observational

The sponsor has not verified this record recently (last verified Dec 2019), so the status shown — last known as Not yet recruiting — may be out of date.
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
100
Ages
18 Years and older
Sex
All
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Study summary

Patients undergoing surgery under opioid free general anesthesia (OFA) are monitored with antinociceptive devices like NOL or ANI that measures sympathetic activity but are invisible for the attending anesthesiologist . Observational study comparing patients with sufficient suppression of sympathetic reactions with patients having insufficient suppression on hemodynamic stability, post operative sedation, pain and inflammatory markers.

Read the detailed description

all patients get an opioid free anesthesia using dexmedetomidine, lidocaine, ketamine and magnesium. dosing is according to the attending anesthesiologist.

total dose of each drug and duration of anesthesia are recorded. Antinociceptive devices measures how long the patient is during anesthesia having a nociceptive level nociception level index (NOL) or Analgesia Nociception Index (ANI) above normal without showing the data to the attending anesthesiologist.

Relationship is calculated between on one side the hemodynamic stability, postoperative sedation, pain, postoperative CRP and on the other side the time NOL is above 20 or ANI is below 50.

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Conditions studied

  • Inflammation
  • Postoperative Pain

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03

In context

Inflammation

3,439 studies on the registry are indexed under Inflammation; 629 are open to participants now.

This study's planned enrollment of 100 is close to the median of 95 across 895 observational studies indexed under Inflammation.

Browse Inflammation studies →

Lead sponsor

AZ Sint-Jan AV is the lead sponsor of 58 studies on the registry; 14 are open to participants now.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

major surgical procedures without need for regional anesthesia

Inclusion criteria

  • major surgical procedures without need for regional anesthesia

Exclusion criteria

Exclusion Criteria:

  • allergy to one of the anesthetics used
  • major liver, renal cardiac or pulmonary disease reducing normal function
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Study design

Observational model
Other
Time perspective
Prospective
Enrollment
100 participants (estimated)
Patient registry
No

Interventions

  • Proceduremajor surgery under opioid free anesthesia without regional anesthesia

    measuring nociception in every patient but blinded for attending anesthesiologist

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What researchers measure

Primary outcomes

  1. CRP 24 hours postoperative

    measure chronic reactive protein (CRP) biomarker of surgical inflammation

    Time frame: 24 hours postoperative

Secondary outcomes

  1. hemodynamic stability

    dosis of vasoactive drugs needed to support blood pressure before blood pressure rise as requested by surgeons.

    Time frame: intraoperative

  2. postoperative pain using VAS score

    postoperative pain measured by visual analog scale (VAS) score: max pain =10 and worst, no pain = 0

    Time frame: up to 4 hours postoperative during post anesthetic care unit (PACU) stay

  3. postoperative sedation using Ramsay score

    deepest postoperative sedation level measured by the Ramsay score at the PACU full awake or no sedation = 1 deep sleep or anesthesia = 5 and worst

    Time frame: first 4 hours postoperative during PACU stay

  4. postoperative opioids used

    total amount of opioids needed postoperative

    Time frame: first 24 hours postoperative

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Study locations

1 site
  • Azsintjan
    Brugge, 8000, Belgium
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 11, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04195009
Lead sponsor
AZ Sint-Jan AV
Responsible party
Jan Mulier (Principal investigator, AZ Sint-Jan AV) — Principal investigator
First posted
Dec 11, 2019
Start date
Dec 1, 2019 (estimated)
Primary completion
Dec 2020 (estimated)
Completion
Dec 2021 (estimated)
Last update
Dec 11, 2019

Study contacts

Jan Paul Mulier, MD PhD
Contact
jan.mulier@azsintjan.be
+32486729203
Joke Denolf
Contact
joke.denolf@azsintjan.be
003250452193
Jan Paul Mulier, MD PhD
principal investigator · AZ Sint-Jan AV

Oversight

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

Not currently enrolling

This study is status unknown, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

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