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Sleep Apnea, ObstructiveNCT01315158

Propofol vs Propofol + Benzo/Opiates in High Risk Group

A study testing Propofol Alone and Propofol+Benzo/Opioids in people with Sleep Apnea, Obstructive and Obesity, run by Washington University School of Medicine at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This will be a randomized controlled trial that compares the rates of sedation related complications in high risk patients (ASA greater or equal to 3, BMI greater or equal to 30, those at risk for OSA) undergoing advanced endoscopy procedures with propofol alone compared to propofol in combination with benzodiazepines… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Sleep Apnea, Obstructive, Obesity
What is being tested?
Propofol Alone and Propofol+Benzo/Opioids
Could I receive a placebo?
No, everyone receives an active treatment
How many people
36 participants
Where
1 siteUnited States
Study dates
Jan 2011to Jul 2014
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Ability to provide informed consent
  • Age greater than or equal to 18 years
  • Presence of at least 1 of the following criteria:
  • ASA class 3 or higher
  • BMI of 30 or greater
  • At risk for OSA (score of 3 or greater on the STOP-BANG screening tool)

Who cannot join

  • drug allergy to Propofol, Benzodiazepines, or Opioids
  • patients who received Benzodiazepines or Opioids within 24 hours of the procedure

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Washington University School of Medicine

    St Louis, Missouri, 63110

Other trials in United States

About this study

Official title: Incidence of Sedation Related Complications With Propofol Alone Versus Propofol With Benzodiazepines and Opiates in a High Risk Group Undergoing Advanced Endoscopic Procedures: A Randomized Controlled Trial

This will be a randomized controlled trial that compares the rates of sedation related complications in high risk patients (ASA greater or equal to 3, BMI greater or equal to 30, those at risk for OSA) undergoing advanced endoscopy procedures with propofol alone compared to propofol in combination with benzodiazepines and opioids.

Read the detailed description

The use of propofol (2,6-di-isopropofol) for sedation during endoscopic procedures has increased in recent years primarily because of its favorable pharmacokinetic profile compared with traditional endoscopic sedation with benzodiazepines and opioids. Propofol has a rapid onset of action (30-45 sec) and short duration of effect (4-8 min). There also are data to support the safe use of propofol for advanced endoscopic procedures such as endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS).

There is limited information on the incidence of sedation related complications during advanced endoscopy. Prior studies were limited by controlled patient populations at low risk of developing sedation related cardiopulmonary complications. In a recent study, we defined the frequency of sedation related adverse events including the rate of airway modifications (AMs) with propofol use during advanced endoscopy. From a total of 799 patients, AMs were required in 14.4% of patients, hypoxemia in 12.8%, hypotension in 0.5% and premature termination in 0.6% of the patients. In addition, body mass index (BMI), male sex and American Society of Anesthesiologists (ASA) class of 3 or higher were independent predictors of AMs. Similarly, Wehrmann and Riphaus identified ASA class of 3 or higher, total propofol dose, history of alcohol use and having an emergency endoscopy as independent factors for sedation related complications in patients undergoing advanced procedures.

Given the alarming rates of obesity in the United States, it is believed that the prevalence of obstructive sleep apnea (OSA) may be 10% or higher and in obese adults these numbers could be as high as 25%. Using a previously validated screening tool for OSA [STOP-BANG (SB)], we reported a prevalence rate of patients at risk for OSA of 43.3% in patients undergoing advanced endoscopy procedures. Patients at risk for OSA with a positive SB score (score ≥ 3 of 8) had a higher rate of AMs (20% vs. 6.1%, adjusted relative risk 1.7) and frequency of hypoxemia (12% vs. 5.2%, adjusted relative risk 1.63) compared to those at low risk for OSA. Thus, based on the available data, it appears that ASA class 3 or higher, high BMI, and patients at risk for OSA are factors that place patients undergoing advanced endoscopy procedures at high risk for sedation related complications including airway modifications.

The optimal method for achieving deep sedation in this high risk group of patients is unclear. Propofol may accentuate airway collapse as patients become unresponsive to verbal stimulation (deep sedation). Recent studies suggest that propofol with midazolam and/or opioids may be synergistic in action and therefore the combined application of these drugs may permit smaller doses of each to be used and potentially lead to a reduction in risk of complications and in the dose of propofol needed while retaining the individual advantages of each compound. There is limited data evaluating the synergistic effect of propofol with midazolam and opioids in patients undergoing advanced endoscopy procedures. Ong and colleagues in a randomized controlled trial compared patient sedation and tolerance during ERCP using propofol alone or midazolam, ketamine and pentazocine (sedato-analgesic cocktail) for induction along with propofol for maintenance. Patient tolerance as assessed by visual analog scales by endoscopist and anesthetist were higher in the combination group. Paspatis et al reported higher dosage of intravenous propofol required in patients being sedated with propofol alone compared with that required in patients receiving oral dose of midazolam with propofol for ERCP procedures. In addition, the patients' anxiety levels before the procedure were lower in the combination group. The mean percentage decline in the oxygen saturation during the procedure was significantly greater in propofol alone group. However, these studies excluded patients deemed to be at a high risk for sedation related complications. Patients with ASA class 3 or higher were excluded, the mean BMI was less than 25, and included only patients at average risk for complications associated with sedation.

The significance of synergistic sedation in patients undergoing advanced endoscopy procedures in the high risk patients is unclear. The overall risk of sedation related complications is thought to be higher compared to standard endoscopy due to longer procedure times and the need for relatively deeper levels of sedation.

Being tested
Propofol Alone, Propofol+Benzo/Opioids
Keywords
Obstructive Sleep Apnea, Body Mass Index
Medical subject headings
Sleep Apnea, Obstructive, Obesity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Propofol AloneDrug

    Also called Propofol, Diprivan, 2,6-di-isopropofol

    Recommended Propofol doses before considering crossover:

    • Induction: 2-2.5 mg/kg
    • Maintenance: 0.1-0.2 mg/kg/min
  • Propofol+Benzo/OpioidsDrug

    Also called Benzodiazepine, Midazolam, Versed, Opioid

    1. Recommended Versed:
    2. Prior to intubation
    • patient is < 50 kg = 1 mg Versed
    • patient is 50-75 kg = 1.5 mg Versed
    • patient is > 75 kg = 2 mg Versed
    1. Recommended Fentanyl
    2. Prior to intubation = 0.5 ug/kg
    3. Total procedural dose = 1 ug/kg
Study groups in NCT01315158
Study groupRoleWhat they receive
Propofol+Benzo/OpioidsActive comparatorIf the patient is randomized into this arm the recommended Versed and Fentanyl doses are standardized: 1. Recommended Versed: a. Prior to intubation * patient is < 50 kg = 1 mg Versed * patient is 50-75 kg = 1.5 mg Versed * patient is > 75 kg = 2 mg Versed 2. Recommended Fentanyl 1. Prior to intubation = 0.5 ug/kg 2. Total procedural dose = 1 ug/kg
Receives: Drug: Propofol+Benzo/Opioids
Propofol AloneActive comparatorThe patients randomized into the sedation with propofol alone are able to cross over if they are unable to be successfully sedated under propofol alone. The the recommended doses before considering crossover are standardized: * Induction Dose: 2-2.5 mg/kg * Maintenance Dose: 0.1-0.2 mg/kg/min
Receives: Drug: Propofol Alone

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants Who Experience Airway Maneuvers

    In high risk patients (meeting at least of 1 of 3 criteria: ASA ≥ 3, BMI ≥ 30, those at risk for OSA) undergoing advanced endoscopy procedures, compare the number of participants who experience airway maneuvers (AMs) when sedated with propofol alone versus propofol in combination with benzodiazepines and opioids.

    Measured: One day (during procedure)

Secondary outcomes (8)
  1. Number of Participants Who Experience Other Sedation Related Complications

    Compare the number of participants who experience other sedation related complications such as hypotension, hypoxemia and need for termination of the procedure between the two groups

    Measured: One day (during procedure)

  2. Compare Propofol Doses Between the Two Groups

    The dose of propofol used between the two groups will be compared

    Measured: One day (during procedure)

  3. Predictors of Sedation Related Complications as Measured by the Number of Participants Who Experience Hypoxemia (Defined as a Pulse Oximetry <90% for Any Duration)

    Measured: One year

  4. Predictors of Sedation Related Complications as Measured by Hypopnea/Apnea (Defined as Fewer Than 6 Breaths/Minute Based on Capnography)

    Measured: One year

  5. Predictors of Sedation Related Complications as Measured by the Incidences of Hypotension (Defined as Systolic Blood Pressure of Less Than 90mmHg or a Decrease of More Than 25% From Baseline)

    Measured: One year

  6. Predictors of Sedation Related Complications as Measured by Early Procedure Termination for an Alternative Sedation Related Complication

    Measured: One year

  7. Patient Tolerance as Assessed by Endoscopists

    The frequency of symptoms of nausea and vomiting in the two groups of patients will be recorded. Patient tolerance of the procedure will be assessed independently by the endoscopist using a 100-mm visual analog scale (VAS, 0=unmanageable, 100=excellent). The patient will also score the level of tolerance using the same VAS at a routine follow-up phone call made 24-48 hours after the procedure.

    Measured: 24-48 hours

  8. Number of Participants Who Experience Symptoms of Nausea and Vomiting Will be Compared Between the Two Groups

    The number of participants who experience symptoms of nausea and vomiting in the two groups of patients will be recorded. This will be recorded during the follow-up phone call made 24-48 hours after the procedure.

    Measured: 24-48 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Mar 2011 (estimated)
  2. Study startJan 2011
  3. Primary completionJul 2014
  4. Study completionJul 2014

Why it stopped: \- The research team is not able to obtain the necessary support to continue the study.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
36 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01315158
Sponsor's protocol ID
10-1133
Status last verified
Sep 2016
First submitted
11 Mar 2011
Last updated
28 Oct 2016
Data monitoring committee
Yes

Publications

  • Rex DK, Deenadayalu VP, Eid E, Imperiale TF, Walker JA, Sandhu K, Clarke AC, Hillman LC, Horiuchi A, Cohen LB, Heuss LT, Peter S, Beglinger C, Sinnott JA, Welton T, Rofail M, Subei I, Sleven R, Jordan P, Goff J, Gerstenberger PD, Munnings H, Tagle M, Sipe BW, Wehrmann T, Di Palma JA, Occhipinti KE, Barbi E, Riphaus A, Amann ST, Tohda G, McClellan T, Thueson C, Morse J, Meah N. Endoscopist-directed administration of propofol: a worldwide safety experience. Gastroenterology. 2009 Oct;137(4):1229-37; quiz 1518-9. doi: 10.1053/j.gastro.2009.06.042. Epub 2009 Jun 21.

    PubMed 19549528
  • Standards of Practice Committee of the American Society for Gastrointestinal Endoscopy; Lichtenstein DR, Jagannath S, Baron TH, Anderson MA, Banerjee S, Dominitz JA, Fanelli RD, Gan SI, Harrison ME, Ikenberry SO, Shen B, Stewart L, Khan K, Vargo JJ. Sedation and anesthesia in GI endoscopy. Gastrointest Endosc. 2008 Nov;68(5):815-26. doi: 10.1016/j.gie.2008.09.029. No abstract available.

    PubMed 18984096
  • Tohda G, Higashi S, Wakahara S, Morikawa M, Sakumoto H, Kane T. Propofol sedation during endoscopic procedures: safe and effective administration by registered nurses supervised by endoscopists. Endoscopy. 2006 Apr;38(4):360-7. doi: 10.1055/s-2005-921192.

    PubMed 16680635
  • Rex DK, Heuss LT, Walker JA, Qi R. Trained registered nurses/endoscopy teams can administer propofol safely for endoscopy. Gastroenterology. 2005 Nov;129(5):1384-91. doi: 10.1053/j.gastro.2005.08.014.

    PubMed 16285939
  • Riphaus A, Stergiou N, Wehrmann T. Sedation with propofol for routine ERCP in high-risk octogenarians: a randomized, controlled study. Am J Gastroenterol. 2005 Sep;100(9):1957-63. doi: 10.1111/j.1572-0241.2005.41672.x.

    PubMed 16128939
  • Wehrmann T, Riphaus A. Sedation with propofol for interventional endoscopic procedures: a risk factor analysis. Scand J Gastroenterol. 2008 Mar;43(3):368-74. doi: 10.1080/00365520701679181.

    PubMed 18938664
  • Yusoff IF, Raymond G, Sahai AV. Endoscopist administered propofol for upper-GI EUS is safe and effective: a prospective study in 500 patients. Gastrointest Endosc. 2004 Sep;60(3):356-60. doi: 10.1016/s0016-5107(04)01711-0.

    PubMed 15332023
  • Vargo JJ, Zuccaro G Jr, Dumot JA, Shermock KM, Morrow JB, Conwell DL, Trolli PA, Maurer WG. Gastroenterologist-administered propofol versus meperidine and midazolam for advanced upper endoscopy: a prospective, randomized trial. Gastroenterology. 2002 Jul;123(1):8-16. doi: 10.1053/gast.2002.34232.

    PubMed 12105827
  • Paspatis GA, Manolaraki MM, Vardas E, Theodoropoulou A, Chlouverakis G. Deep sedation for endoscopic retrograde cholangiopancreatography: intravenous propofol alone versus intravenous propofol with oral midazolam premedication. Endoscopy. 2008 Apr;40(4):308-13. doi: 10.1055/s-2007-995346. Epub 2007 Dec 5.

    PubMed 18058653
  • Cote GA, Hovis RM, Ansstas MA, Waldbaum L, Azar RR, Early DS, Edmundowicz SA, Mullady DK, Jonnalagadda SS. Incidence of sedation-related complications with propofol use during advanced endoscopic procedures. Clin Gastroenterol Hepatol. 2010 Feb;8(2):137-42. doi: 10.1016/j.cgh.2009.07.008. Epub 2009 Jul 14.

    PubMed 19607937
  • Tishler PV, Larkin EK, Schluchter MD, Redline S. Incidence of sleep-disordered breathing in an urban adult population: the relative importance of risk factors in the development of sleep-disordered breathing. JAMA. 2003 May 7;289(17):2230-7. doi: 10.1001/jama.289.17.2230.

    PubMed 12734134
  • Young T, Peppard PE, Gottlieb DJ. Epidemiology of obstructive sleep apnea: a population health perspective. Am J Respir Crit Care Med. 2002 May 1;165(9):1217-39. doi: 10.1164/rccm.2109080.

    PubMed 11991871
  • Hiestand DM, Britz P, Goldman M, Phillips B. Prevalence of symptoms and risk of sleep apnea in the US population: Results from the national sleep foundation sleep in America 2005 poll. Chest. 2006 Sep;130(3):780-6. doi: 10.1378/chest.130.3.780.

    PubMed 16963675
  • Cote GA, Hovis CE, Hovis RM, Waldbaum L, Early DS, Edmundowicz SA, Azar RR, Mullady DK, Jonnalagadda SS. A screening instrument for sleep apnea predicts airway maneuvers in patients undergoing advanced endoscopic procedures. Clin Gastroenterol Hepatol. 2010 Aug;8(8):660-665.e1. doi: 10.1016/j.cgh.2010.05.015. Epub 2010 May 23.

    PubMed 20580942
  • Cohen LB, Dubovsky AN, Aisenberg J, Miller KM. Propofol for endoscopic sedation: A protocol for safe and effective administration by the gastroenterologist. Gastrointest Endosc. 2003 Nov;58(5):725-32. doi: 10.1016/s0016-5107(03)02010-8.

    PubMed 14595310

Questions about this trial

What is this clinical trial studying?

A study testing Propofol Alone and Propofol+Benzo/Opioids in people with Sleep Apnea, Obstructive and Obesity, run by Washington University School of Medicine at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 28 Oct 2016. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 28 Oct 2016). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants Who Experience Airway Maneuvers (time frame: One day (during procedure)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01315158, which also lists 24 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Oct 2016; AzTrials last refreshed its copy on 6 Nov 2026.

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