ClinicalTrials.gg
CompletedNCT06111872Updated Mar 25, 2025

Ketamine-midazolam as a Sedative Agent in Endoscopic Retrograde Cholangiopancreatography.

A Phase 2 interventional study of Ketamine and Midazolam in Cholangitis, Pancreatic Cancer and Choledocholithiasis, sponsored by National University of Malaysia. Completed at 1 site in Malaysia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-03-25.

Sponsored by National University of Malaysia · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
90
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Does Ketamine-Midazolam have a better efficacy and safety profile compared to Midazolam - Pethidine in Endoscopic Retrograde Cholangiopancreatography (ERCP)?

Read the detailed description

Ketamine- Midazolom is more efficacious in producing desired sedative state and have a better safety profile as a sedative agent in ERCP compared to Midazolam- Pethidine. The usage of sedative agent in ERCP depends on surgeon's preferences and availability of the drugs. The most commonly used sedatives in ERCP is Midazolam with pethidine. The use of Midazolam , however, is related to:

  1. 20-45% failure of sedation during ERCP
  2. Cardio-respiratory depression - apnoea: 15.4%, hypotension: 15.7%, bradycardia: 6.8%

Due to the proven efficacy and safety profile of ketamine-midazolam as a sedative agent in procedural sedation, the investigators propose that the use of ketamine-midazolam as a sedative agent in ERCP is more effective and better safety profile when compared to Midazolam- Pethidine. The synergistic effect means to reduce the total dose of midazolam used.

02

Conditions studied

  • Cholangitis
  • Pancreatic Cancer
  • Choledocholithiasis
  • Choledochal Cyst

Keywords

  • Ketamine
  • Midazolam
  • sedation
  • ERCP
03

In context

Cholangitis

82 studies on the registry are indexed under Cholangitis; 17 are open to participants now.

This study's enrollment of 90 is close to the median of 100 across 52 interventional studies indexed under Cholangitis.

Browse Cholangitis studies →

Lead sponsor

National University of Malaysia is the lead sponsor of 124 studies on the registry; 45 are open to participants now.

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

04

Who can participate

Ages eligible
18 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

  • Adults > 18 years old which able to give valid consent
  • Patient planned for ERCP (either emergency or elective)
  • American Society of Anaesthesiologist (ASA) score of I-III

Exclusion criteria

Exclusion Criteria:

  • Known towards Ketamine or Midazolam
  • Increased intracranial pressure, acute stroke (\<3 months), intracranial haemorrhage (\<3 months)
  • Severe hypertension (BP>170/110) and tachycardia (Heart rate >110)
  • Acute myocardial infarction, acute coronary syndrome (\< 6 months)
  • Tachyarrhythmia
  • Pregnancy
  • Intravenous drug user (IVDU) or substance abuse patient
  • History of hallucination
  • Child's Pugh class C
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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Care provider)
Enrollment
90 participants (actual)

Study arms

  • Experimental
    Ketamine - Midazolam arm

    Initial IV Ketamine of 0.5mg/kg with IV Midazolam 0.02mg/kg given over 1 minute. If depth of sedation not adequate, to give another bolus of IV ketamine 0.25mg/kg after 2 minutes with IV Midazolam 0.01mg/kg. If depth of sedation not adequate, to give another bolus of IV Ketamine 0.25mg/kg after 2 minutes and IV Midazolam 0.01mg/kg. Failure of sedation: inadequate sedation for the intention to treat: patient will be arranged for MAC (monitored anaesthesia care) with anaesthesia team

    Drug: Ketamine · Drug: Midazolam

  • Active comparator
    Midazolam - Pethidine arm

    Initial IV Midazolam 0.05mg/kg given over 1 minute with IV Pethidine 0.7mcg/kg. If depth of sedation not If adequate, to give another bolus of IV Midazolam 0.02mg/kg after 2 minutes and IV Pethidine 0.7mcg/kg. If depth of sedation not adequate, to give another bolus of IV Midazolam 0.02mg/kg after 2 minutes. Failure of sedation: inadequate sedation for the intention to treat: patient will be arranged for MAC (monitored anaesthesia care) with anaesthesia team.

    Drug: Midazolam · Drug: Pethidin

Interventions

  • Administration described in arm/ group description

    Also known as: KETAMINE- MIDAZOLAM

  • Administration described in arm/ group description

    Also known as: KETAMINE-MIDAZOLAM

  • Administration described in arm/ group description

    Also known as: MIDAZOLAM-PETHIDIN

06

What researchers measure

Primary outcomes

  1. To compare the depth of sedation

    The depth of sedation is evaluated using ramsay sedation scale where the scale is 1 to 6, where higher score is better

    Time frame: Evaluated at specific timepoints during the procedure whch are: introduction of scope, canulation of bile duct, trawling of stones, removal of stent and removal of scope

Secondary outcomes

  1. To evaluate the efficacy of Ketamine- Midazolam as a sedative agent in ERCP in terms of sedation failure rate.

    Sedation failure rate is defined as inability of the sedation used to adequately sedate a patient for initiation and completion using ramsay sedation scale where the scale is 1-6, where higher score is better.

    Time frame: Evaluated at specific timepoints during the procedure whch are: introduction of scope, canulation of bile duct, during sphincerotomy, removal of stent and removal of scope

  2. To compare pre and post procedure mean arterial pressure (MAP)

    To detect if there are changes in MAP calculated from participants blood pressure readings

    Time frame: Measured at specific time-pointswhich are: pre-sedation, 2 minutes after initiation of sedation and 5 minutes after the procedure is completed

  3. To compare surgeon satisfaction in terms of sedation quality between both arms using a likert scale of 1 to 5 where a higher score is better

    Measured using likert scale

    Time frame: Single point asessment at the end of the procedure

  4. To compare participant satisfaction in terms of procedure experience between both groups using likert scale of 1 to 10 where the higher score is better

    Measured using likert scale

    Time frame: Single point asessment at 2 hours after completion of procedure

  5. To compare the number of participants that developed an adverse event that led to abandonment of procedure

    Adverse event by monitoring patient vital signs including blood pressure, pulse rate, oxygen saturation and procedure will be abandoned if the parameters reach a pre-set cut-off point. Systolic blood pressure \<90mmHg or \>180mmHg, Pulse rate of \<60/min or \>150/min and oxygen saturation \<95% despite supplemental oxygen therapy via nasal canula.

    Time frame: Evaluated at specific timepoints during the procedure which are: introduction of scope, canulation of bile duct, during sphincerotomy, trawling of stones, removal of stent and removal of scope

07

Study locations

1 site
  • Hospital Canselor Tuanku Muhriz UKM
    Cheras, Kuala Lumpur 56000, Malaysia
08

References and documents

Publications

  • Narayanan S, Shannon A, Nandalan S, Jaitly V, Greer S. Alternative sedation for the higher risk endoscopy: a randomized controlled trial of ketamine use in endoscopic retrograde cholangiopancreatography. Scand J Gastroenterol. 2015;50(10):1293-303. doi: 10.3109/00365521.2015.1036113. Epub 2015 Jun 10. PubMed 26061267 ↗
  • Tobias JD, Leder M. Procedural sedation: A review of sedative agents, monitoring, and management of complications. Saudi J Anaesth. 2011 Oct;5(4):395-410. doi: 10.4103/1658-354X.87270. PubMed 22144928 ↗
  • Jung M, Hofmann C, Kiesslich R, Brackertz A. Improved sedation in diagnostic and therapeutic ERCP: propofol is an alternative to midazolam. Endoscopy. 2000 Mar;32(3):233-8. doi: 10.1055/s-2000-96. PubMed 10718389 ↗
  • Tokmak S, Cetin MF, Torun S. Efficacy and safety of endoscopic retrograde cholangiopancreatography in the very elderly by using a combination of intravenous midazolam, ketamine and pethidine. Geriatr Gerontol Int. 2021 Oct;21(10):887-892. doi: 10.1111/ggi.14252. Epub 2021 Aug 23. PubMed 34427037 ↗
  • Goudra B, Nuzat A, Singh PM, Borle A, Carlin A, Gouda G. Association between Type of Sedation and the Adverse Events Associated with Gastrointestinal Endoscopy: An Analysis of 5 Years' Data from a Tertiary Center in the USA. Clin Endosc. 2017 Mar;50(2):161-169. doi: 10.5946/ce.2016.019. Epub 2016 Apr 29. PubMed 27126387 ↗

Individual participant data

Plan to share: No — Currently undecided

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jul 2023 to primary completion in Feb 2024, 7 months.

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

Registered
Oct 12, 2023
First posted
Nov 1, 2023
StartActual
Jul 18, 2023
Primary completionActual
Feb 27, 2024
CompletionActual
Oct 25, 2024
Last update
Mar 25, 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 Mar 25, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06111872
Responsible party
Prof Madya Dr. Azlanudin Azman (Associate Professor, National University of Malaysia) — Principal investigator
First posted
Nov 1, 2023
Start date
Jul 18, 2023
Primary completion
Feb 27, 2024
Completion
Oct 25, 2024
Last update
Mar 25, 2025

Study contacts

Azlanudin Azman
principal investigator · Universiti Kebangsaan Malaysia Medical Centre

Oversight

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

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Studies of the drug tested here: Ketamine

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