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A Dual Channel Supraglottic Airway Device (LMA Gastro) for Oxygenation in Patients Undergoing ERCP

A Randomized Study to Compare LMA® Gastro™, a Dual Channel Supraglottic Airway (SGA) Device, to Oxygenation With Standard Nasal Cannula for Endoscopic Retrograde Cholangiopancreatography (ERCP)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04740164
Enrollment
66
Registered
2021-02-05
Start date
2021-02-24
Completion date
2023-05-04
Last updated
2024-11-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bile Duct Carcinoma, Gallbladder Carcinoma, Pancreatic Ductal Adenocarcinoma

Brief summary

This clinical trial compares the effect of LMA Gastro, a dual channel supraglottic airway (SGA) device, to oxygenation with standard nasal cannula for endoscopic retrograde cholangiopancreatography (ERCP). An ERCP is a combination of imaging scans and endoscopy that helps doctors diagnose and treat conditions of the pancreas and bile ducts that requires general anesthesia or procedural sedation. Anesthesiologists often use SGAs or nasal cannulas to help patients breathe while they are asleep during procedures. An SGA consists of an airway tube that connects to a mask, which is inserted through the mouth and placed at the back of the throat to keep the airway open while patients are under anesthesia or sedation. The nasal cannula is a device that fits in a patient's nostrils and delivers oxygen through a small, flexible tube while they are under anesthesia or sedation. The goal of this trial is to compare the effects of the LMA Gastro to nasal cannula when used to deliver oxygen to patients while they are asleep during their ERCP procedure.

Detailed description

PRIMARY OBJECTIVE: I. To compare the incidence of desaturation (oxygen saturation \[SpO2\] \< 90%) between patients undergoing ERCP with LMA Gastro versus (vs) standard nasal cannula. SECONDARY OBJECTIVES: I. To evaluate the incidence of additional airway maneuvers (jaw thrust/chin lift/placement of oral airway or/nasal trumpet/intubation). II. To evaluate the incidence of withdrawal of duodenoscope from the airway to facilitate airway support. III. To evaluate the incidence of adverse events. IV. To evaluate times related to anesthesia and procedure (defined as anesthesia start to anesthesia end and procedure start to procedure end respectively). V. To evaluate time from procedure end to anesthesia end. VI. To describe hemodynamics within the two groups (recorded blood pressures, heart rates, oxygen saturations, and end tidal carbon dioxide \[CO2\]). VII. To evaluate anesthesiologist placing the device (training video viewed, number of practice attempts, years of experience). OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients undergo ERCP with LMA Gastro. ARM II: Patients undergo ERCP with standard nasal cannula.

Interventions

PROCEDUREEndoscopic Retrograde Cholangiopancreatography

Undergo ERCP with LMA Gastro

Sponsors

M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Adult patients (\>= 18 years old) undergoing ERCP

Exclusion criteria

* Patients with propofol allergy * Patients at increased aspiration risk * Patients with abnormal head/neck pathology preventing LMA Gastro placement * Patients with surgical or radiation treatment to the head/neck making LMA Gastro placement difficult * Patient with known difficult airway requiring advanced intubation equipment (with the exception of the video-laryngoscope) in the past * Esophagectomy patients * Patients already intubated upon arrival to endoscopy suite * Patients undergoing endoscopic ultrasound (EUS) * Patients with body mass index (BMI) \>= 35 kg/m\^2 * Patients with hypoxemia (SpO2 \< 94% on room air or on home oxygen) * American Society of Anesthesiology (ASA) Physical Status IV-V

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants That Had Desaturation Episodes of SpO2 <90%The time between Anesthesia Start time and Anesthesia End time, 1.5 hrs in averageThe desaturation (SpO2 \< 90%) between patients undergoing ERCP with LMA® Gastro™ vs standard nasal cannula

Secondary

MeasureTime frameDescription
Incidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway SupportThe time between Anesthesia Start time and Anesthesia End timePatients in which Duodenoscope was withdrawn to facilitate airway support
Incidence of Adverse EventsFrom PACU arrival to PACU discharge, 3 hours in averageNumber of adverse events reported by the participants and/or reported by care providers during Surgery and in PACU, 3 hrs in average
To Evaluate Times Related to Anesthesia and ProcedureFrom anesthesia start to anesthesia end and procedure start to procedure end, up to 165 minutesDefined as anesthesia start to anesthesia end and procedure start to procedure end respectively
To Evaluate Time From Procedure End to Anesthesia EndFrom procedure end and anesthesia end, up to 60 minutesThe time elapsed between procedure end and anesthesia end
Incidence of Additional Airway ManeuversThe time between Anesthesia Start time and Anesthesia End time, 1.5 hrs in averageNumber of Participants that required additional manuevers to secure airway during their surgery
To Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsFrom anesthesia start to anesthesia end, on average 5 hoursBlood pressure and end tidal carbon dioxide \[CO2\] were measured prior treatment administration and at the end of the procedure.
To Describe Oxygen Saturations Within the Two GroupsFrom anesthesia start to anesthesia end, on average 5 hoursOxygen saturations were measured prior treatment administration and at the end of the procedure.
To Evaluate Anesthesiologist Placing the DeviceAt the end of procedure, between 5 - 10 minutesNumber of attempts means how many times the anesthesiologist tried to secure airway.
To Describe Heart Rates Within the Two GroupsFrom anesthesia start to anesthesia end, on average 5 hoursHeart rates were measured prior treatment administration and at the end of the procedure.

Countries

United States

Participant flow

Recruitment details

This study enrolled 66 patients from 02/24/2021 to 06/24/2022. Patients ≥18 years old undergoing elective ERCP with TIVA were eligible for enrollment.

Participants by arm

ArmCount
LMA Gastro
This group of patients received GA during their procedure, using LMA Gastro for intubation.
26
Standard of Care
This group received TIVA during their procedure.
30
Total56

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLack of Efficacy40
Overall StudyPhysician Decision33

Baseline characteristics

CharacteristicStandard of CareTotalLMA Gastro
Age, Continuous62.8667 years59.96 years56.6154 years
ASA Status (grade)
II (better)
1 Participants1 Participants0 Participants
ASA Status (grade)
III (worse)
29 Participants55 Participants26 Participants
Race and Ethnicity Not Collected0 Participants
Region of Enrollment
United States
30 participants56 participants26 participants
Sex: Female, Male
Female
8 Participants23 Participants15 Participants
Sex: Female, Male
Male
22 Participants33 Participants11 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 260 / 30
other
Total, other adverse events
24 / 263 / 30
serious
Total, serious adverse events
0 / 260 / 30

Outcome results

Primary

Number of Participants That Had Desaturation Episodes of SpO2 <90%

The desaturation (SpO2 \< 90%) between patients undergoing ERCP with LMA® Gastro™ vs standard nasal cannula

Time frame: The time between Anesthesia Start time and Anesthesia End time, 1.5 hrs in average

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
LMA GastroNumber of Participants That Had Desaturation Episodes of SpO2 <90%Desaturation <90% - Yes0 Participants
LMA GastroNumber of Participants That Had Desaturation Episodes of SpO2 <90%Desaturation <90% - No26 Participants
Standard of CareNumber of Participants That Had Desaturation Episodes of SpO2 <90%Desaturation <90% - Yes3 Participants
Standard of CareNumber of Participants That Had Desaturation Episodes of SpO2 <90%Desaturation <90% - No27 Participants
Secondary

Incidence of Additional Airway Maneuvers

Number of Participants that required additional manuevers to secure airway during their surgery

Time frame: The time between Anesthesia Start time and Anesthesia End time, 1.5 hrs in average

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
LMA GastroIncidence of Additional Airway ManeuversYes5 Participants
LMA GastroIncidence of Additional Airway ManeuversNo21 Participants
Standard of CareIncidence of Additional Airway ManeuversYes19 Participants
Standard of CareIncidence of Additional Airway ManeuversNo11 Participants
Secondary

Incidence of Adverse Events

Number of adverse events reported by the participants and/or reported by care providers during Surgery and in PACU, 3 hrs in average

Time frame: From PACU arrival to PACU discharge, 3 hours in average

ArmMeasureValue (NUMBER)
LMA GastroIncidence of Adverse Events24 events
Standard of CareIncidence of Adverse Events3 events
Secondary

Incidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway Support

Patients in which Duodenoscope was withdrawn to facilitate airway support

Time frame: The time between Anesthesia Start time and Anesthesia End time

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
LMA GastroIncidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway SupportYes9 Participants
LMA GastroIncidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway SupportNo17 Participants
Standard of CareIncidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway SupportYes10 Participants
Standard of CareIncidence of Withdrawal of Duodenoscope From Airway to Facilitate Airway SupportNo20 Participants
Secondary

To Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two Groups

Blood pressure and end tidal carbon dioxide \[CO2\] were measured prior treatment administration and at the end of the procedure.

Time frame: From anesthesia start to anesthesia end, on average 5 hours

ArmMeasureGroupValue (MEAN)Dispersion
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsSystolic Blood pressure prior to intervention127.2308 mmhgStandard Deviation 19.4757
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsSystolic Blood pressure post intervention122.0769 mmhgStandard Deviation 15.0676
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsDiastolic Blood pressure prior to intervention78.3462 mmhgStandard Deviation 10.7664
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsDiastolic Blood pressure post intervention76.9231 mmhgStandard Deviation 10.0833
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsEnd tidal carbon dioxide [CO2] prior to intervention18.6364 mmhgStandard Deviation 11.4129
LMA GastroTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsEnd tidal carbon dioxide [CO2] post intervention22.0769 mmhgStandard Deviation 9.1693
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsEnd tidal carbon dioxide [CO2] prior to intervention25.2 mmhgStandard Deviation 11.7858
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsSystolic Blood pressure prior to intervention137.5714 mmhgStandard Deviation 28.3097
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsDiastolic Blood pressure post intervention77.7 mmhgStandard Deviation 15.0611
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsSystolic Blood pressure post intervention128.2 mmhgStandard Deviation 23.5231
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsEnd tidal carbon dioxide [CO2] post intervention28.75 mmhgStandard Deviation 10.707
Standard of CareTo Describe Blood Pressure and End Tidal Carbon Dioxide [CO2] Within the Two GroupsDiastolic Blood pressure prior to intervention80.8571 mmhgStandard Deviation 15.1846
Secondary

To Describe Heart Rates Within the Two Groups

Heart rates were measured prior treatment administration and at the end of the procedure.

Time frame: From anesthesia start to anesthesia end, on average 5 hours

ArmMeasureGroupValue (MEAN)Dispersion
LMA GastroTo Describe Heart Rates Within the Two GroupsHeart rate prior to intervention79.8846 bpmStandard Deviation 16.7412
LMA GastroTo Describe Heart Rates Within the Two GroupsHeart rate post intervention77.1154 bpmStandard Deviation 15.8501
Standard of CareTo Describe Heart Rates Within the Two GroupsHeart rate prior to intervention77.3667 bpmStandard Deviation 13.7853
Standard of CareTo Describe Heart Rates Within the Two GroupsHeart rate post intervention66.9667 bpmStandard Deviation 10.3607
Secondary

To Describe Oxygen Saturations Within the Two Groups

Oxygen saturations were measured prior treatment administration and at the end of the procedure.

Time frame: From anesthesia start to anesthesia end, on average 5 hours

ArmMeasureGroupValue (MEAN)Dispersion
LMA GastroTo Describe Oxygen Saturations Within the Two GroupsOxygen saturation prior to intervention98.5769 percentage of saturationStandard Deviation 1.9426
LMA GastroTo Describe Oxygen Saturations Within the Two GroupsOxygen saturation post intervention93.7692 percentage of saturationStandard Deviation 1.6796
Standard of CareTo Describe Oxygen Saturations Within the Two GroupsOxygen saturation prior to intervention99.033 percentage of saturationStandard Deviation 1.1885
Standard of CareTo Describe Oxygen Saturations Within the Two GroupsOxygen saturation post intervention98.5 percentage of saturationStandard Deviation 1.9783
Secondary

To Evaluate Anesthesiologist Placing the Device

Number of attempts means how many times the anesthesiologist tried to secure airway.

Time frame: At the end of procedure, between 5 - 10 minutes

Population: This outcome is evaluating the providers not participants. This outcome is only applicable to the LMA Gastro arm since it is in this arm we are using the study device.

ArmMeasureGroupValue (NUMBER)
LMA GastroTo Evaluate Anesthesiologist Placing the DeviceSuccessful on Attempt 177 percentage of successful attempts
LMA GastroTo Evaluate Anesthesiologist Placing the DeviceSuccessful on Attempt 219 percentage of successful attempts
LMA GastroTo Evaluate Anesthesiologist Placing the DeviceSuccessful on Attempt 34 percentage of successful attempts
Secondary

To Evaluate Time From Procedure End to Anesthesia End

The time elapsed between procedure end and anesthesia end

Time frame: From procedure end and anesthesia end, up to 60 minutes

ArmMeasureValue (MEAN)
LMA GastroTo Evaluate Time From Procedure End to Anesthesia End18.5769 minutes
Standard of CareTo Evaluate Time From Procedure End to Anesthesia End11.2 minutes
Secondary

To Evaluate Times Related to Anesthesia and Procedure

Defined as anesthesia start to anesthesia end and procedure start to procedure end respectively

Time frame: From anesthesia start to anesthesia end and procedure start to procedure end, up to 165 minutes

ArmMeasureGroupValue (MEAN)
LMA GastroTo Evaluate Times Related to Anesthesia and ProcedureTotal Anesthesia Time75.0769 minutes
LMA GastroTo Evaluate Times Related to Anesthesia and ProcedureTotal Procedure Time32.6154 minutes
Standard of CareTo Evaluate Times Related to Anesthesia and ProcedureTotal Anesthesia Time62.8667 minutes
Standard of CareTo Evaluate Times Related to Anesthesia and ProcedureTotal Procedure Time45.5333 minutes

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026