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CompletedNCT06060626Updated Jan 28, 2025

Optimization of Sedation Protocol for Endoscopic Procedures Using Impedance Ventilation Monitor.

An interventional study of Sedation using only Propofol. and Sedation using combination of Propofol and Fentanyl. in Sedation Complication and Ventilatory Depression, sponsored by Charles University, Czech Republic. Completed at 1 site in Czechia. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2025-01-28.

Sponsored by Charles University, Czech Republic · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
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Study summary

The aim of the study is to evaluate the effect of opioids administered during sedation on patients' respiratory activity (ventilation) and comfort of the operator and patient during the endoscopic procedure. A common side effect of sedation is the effect on patients' ventilation, resulting from a combination of attenuation of respiratory centre activity and loss of patent airways. Shallow sedation will reduce these risks, but in addition to patient discomfort, it also increases the difficulty or impossibility of the endoscopist to perform the procedure. Choosing the appropriate method of sedation thus fundamentally affects the course of the procedure from the point of view of both the patient and the endoscopist. The aim is to prove that sedation with propofol alone compared to sedation with propofol and fentanyl premedication leads to the need for higher cumulative doses of administered propofol, higher risk of respiratory depression and lower patient and operator comfort. In addition, the non-invasive respiratory volume monitor (ExSpiron 2Xi) will be used for standard patient monitoring during the procedure, which assesses the lung tidal volume and respiratory rate by measuring the electrical impedance of the chest. This measurement captures inadequate ventilation before saturation drops, allowing even slight differences between selected drugs to be compared.

Read the detailed description

The aim of the study is to evaluate the effect of opioids administered during sedation on patients' respiratory activity (ventilation) and comfort of the operator and patient during the endoscopic procedure. A common side effect of sedation is the effect on patients' ventilation, resulting from a combination of attenuation of respiratory centre activity and loss of patent airways. Shallow sedation will reduce these risks, but in addition to patient discomfort, it also increases the difficulty or impossibility of the endoscopist to perform the procedure. Choosing the appropriate method of sedation thus fundamentally affects the course of the procedure from the point of view of both the patient and the endoscopist. The aim is to prove that sedation with propofol alone compared to sedation with propofol and fentanyl premedication leads to the need for higher cumulative doses of administered propofol, higher risk of respiratory depression and lower patient and operator comfort. Standard monitoring during endoscopic procedures using sedation includes continual recording of ECG and respiratory rate (using the same electrodes), measurement of arterial blood oxygen saturation using a pulse oximeter and blood pressure measurement. Extended monitoring of spontaneous ventilation during sedation includes analysis of the concentration of exhaled carbon dioxide or analysis of the arterial blood gases.However, these methods have limitations and often critically reduced respiratory activity is diagnosed too late. Impedance monitoring of ventilation is now being introduced into clinical practice. In addition, the non-invasive respiratory volume monitor (ExSpiron 2Xi) will be used for standard patient monitoring during the procedure, which assesses the lung tidal volume and respiratory rate by measuring the electrical impedance of the chest. This measurement captures inadequate ventilation before saturation drops, allowing even slight differences between selected drugs to be compared.

02

Conditions studied

  • Sedation Complication
  • Ventilatory Depression

Keywords

  • sedation protocol
  • endoscopic procedure
  • ventilation monitoring
  • ventilatory depression
03

In context

Respiratory Insufficiency

1,650 studies on the registry are indexed under Respiratory Insufficiency; 296 are open to participants now.

This study's enrollment of 50 is close to the median of 55 across 1,043 interventional studies indexed under Respiratory Insufficiency.

Browse Respiratory Insufficiency studies →

Lead sponsor

Charles University, Czech Republic is the lead sponsor of 220 studies on the registry; 76 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Scheduled therapeutic or diagnostic colonoscopy with sedation
  • Supine or lateral decubitus position
  • Age 18-65
  • American Society of Anesthesiologists (ASA) physical status classification system 1-2
  • Informed consent signed

Exclusion criteria

Exclusion Criteria:

  • Planned frequent use of electrocoagulation
  • Contact allergy for adhesive pads, excessive thoracic hair or other problem with pads
  • contraindication of using Propofol or Fentanyl
  • Incapability to understand the informed consent
05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Care provider)
Enrollment
50 participants (actual)

Study arms

  • Active comparator
    Propofol

    Patients in whom only propofol will be administered during sedation. Intermittent boluses of propofol titrated to moderate level of sedation.

    Drug: Sedation using only Propofol.

  • Active comparator
    Fentanyl

    Patients in whom combination of propofol and fentanyl will be administered during sedation. Fentanyl 1 ug/kg bolus 3 minutes before induction + Propofol intermittent boluses titrated to moderate level of sedation.

    Drug: Sedation using combination of Propofol and Fentanyl.

Interventions

  • DrugSedation using only Propofol.

    Patients in whom only propofol will be administered during sedation.

    Also known as: Propofol

  • DrugSedation using combination of Propofol and Fentanyl.

    Patients in whom combination of propofol and fentanyl will be administered during sedation.

    Also known as: Fentanyl

06

What researchers measure

Primary outcomes

  1. Incidence of significant decrease in ventilation during propofol sedation.

    Incidence of significant decrease in ventilation during sedation with propofol alone during endoscopic surgery.

    Time frame: during the endoscopic procedure

  2. Incidence of significant decrease in ventilation during propofol and fentanyl sedation.

    Incidence of significant decrease in ventilation during sedation with propofol and fentanyl during endoscopic surgery.

    Time frame: during the endoscopic procedure

Secondary outcomes

  1. Subjective assessment of the comfort of the procedure by the endoscopist.

    Subjective assessment of the comfort of the procedure by the endoscopist using a questionnaire.

    Time frame: immediately after the procedure

  2. Subjective assessment of the comfort of the procedure by the patient.

    Subjective assessment of the comfort of the procedure by the patient using a questionnaire.

    Time frame: immediately after the procedure

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Study locations

1 site
  • Military University Hospital Prague
    Praha, 16209, Czechia
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References and documents

Publications

  • Zhang X, Kassem MA, Zhou Y, Shabsigh M, Wang Q, Xu X. A Brief Review of Non-invasive Monitoring of Respiratory Condition for Extubated Patients with or at Risk for Obstructive Sleep Apnea after Surgery. Front Med (Lausanne). 2017 Mar 8;4:26. doi: 10.3389/fmed.2017.00026. eCollection 2017. PubMed 28337439 ↗
  • Voscopoulos CJ, MacNabb CM, Brayanov J, Qin L, Freeman J, Mullen GJ, Ladd D, George E. The evaluation of a non-invasive respiratory volume monitor in surgical patients undergoing elective surgery with general anesthesia. J Clin Monit Comput. 2015 Apr;29(2):223-30. doi: 10.1007/s10877-014-9596-0. Epub 2014 Jul 19. PubMed 25037938 ↗
  • Bai Y, Xu Z, Chandrashekar M, St Jacques PJ, Liang Y, Jiang Y, Kla K. Comparison of a simplified nasal continuous positive airways pressure device with nasal cannula in obese patients undergoing colonoscopy during deep sedation: A randomised clinical trial. Eur J Anaesthesiol. 2019 Sep;36(9):633-640. doi: 10.1097/EJA.0000000000001052. PubMed 31313720 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 28, 2025, 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
NCT06060626
Lead sponsor
Charles University, Czech Republic
Collaborators
Military University Hospital, Prague
Responsible party
Sponsor
First posted
Sep 29, 2023
Start date
Nov 16, 2023
Primary completion
Jan 22, 2025
Completion
Jan 22, 2025
Last update
Jan 28, 2025

Study contacts

Ilona Trtíková, Mgr., Ph.D.
study chair · CHARLES UNIVERSITY, FIRST FACULTY OF MEDICINE AND MILITARY UNIVERSITY HOSPITAL PRAGUE
David Novotný, M.D.
principal investigator · CHARLES UNIVERSITY, FIRST FACULTY OF MEDICINE AND MILITARY UNIVERSITY HOSPITAL PRAGUE
Tomáš Tyll, M.D., Ph.D.
principal investigator · CHARLES UNIVERSITY, FIRST FACULTY OF MEDICINE AND MILITARY UNIVERSITY HOSPITAL PRAGUE
Michal Soták, M.D., Ph.D.
principal investigator · CHARLES UNIVERSITY, FIRST FACULTY OF MEDICINE AND MILITARY UNIVERSITY HOSPITAL PRAGUE

Oversight

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

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