SafeLM Versus LMA Classic for Airway Management During Fibroadenoma Excision

October 2, 2026 updated by: Hanoi Medical University

Comparison of Airway Control Effectiveness of the SafeLM Video Laryngeal Mask and the LMA Classic in Patients Undergoing General Anesthesia for Fibroadenoma Excision

This randomized controlled trial compares the airway management performance of the SafeLM video laryngeal mask with the LMA Classic in adult patients undergoing elective fibroadenoma excision under general anesthesia. Participants will be randomly assigned to airway management with either the SafeLM or the LMA Classic. The primary outcome is oropharyngeal leak pressure. Secondary outcomes include insertion performance, ventilation parameters, hemodynamic responses, and airway-related adverse events.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The SafeLM is a video-assisted laryngeal mask that allows visualization during placement, whereas the LMA Classic is a conventional supraglottic airway device. This study is designed to compare the clinical performance of these two devices under standardized conditions.

Adult patients scheduled for elective fibroadenoma excision under general anesthesia will be screened for eligibility. Only patients for whom both devices are considered clinically appropriate will be enrolled, thereby avoiding randomization when patient characteristics indicate a preference for a particular airway management technique. Eligible participants will be randomly assigned to airway management with either the SafeLM or the LMA Classic.

After standardized induction of general anesthesia, the assigned laryngeal mask will be inserted according to the study protocol. The primary outcome is oropharyngeal leak pressure after successful placement. Device insertion characteristics, ventilation parameters, hemodynamic responses, and airway-related adverse events will also be evaluated.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
132

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Female patients aged 18 years or older.
  • Scheduled for elective excision of benign breast fibroadenoma under general anesthesia.
  • Planned airway management with a laryngeal mask airway.
  • American Society of Anesthesiologists (ASA) physical status I-II.
  • Both the SafeLM and LMA Classic are considered clinically appropriate for airway management.
  • Provision of written informed consent.

Exclusion Criteria:

  • Increased risk of pulmonary aspiration, including inadequate preoperative fasting, full stomach, or gastrointestinal obstruction.
  • Known or suspected difficult airway or other airway characteristics for which random allocation between the two study devices is considered clinically inappropriate.
  • Upper airway pathology or anatomical abnormality that may interfere with laryngeal mask placement.
  • Clinical or surgical indication requiring tracheal intubation rather than a laryngeal mask airway.
  • Contraindication or known allergy to medications used in the standardized anesthesia protocol.
  • Inability to provide informed consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: SafeLM Video Laryngeal Mask

Participants randomized to this arm will receive airway management with the SafeLM video laryngeal mask during general anesthesia for elective fibroadenoma excision. The device will be inserted according to the standardized study protocol.
Device: SafeLM Video Laryngeal Mask

The SafeLM is a video-assisted supraglottic airway device that allows visualization of the laryngeal structures during insertion and positioning. It will be used for airway management during general anesthesia according to the standardized study protocol.
Active Comparator: LMA Classic

Participants randomized to this arm will receive airway management with the LMA Classic during general anesthesia for elective fibroadenoma excision. The device will be inserted according to the standardized study protocol.
Device: LMA Classic

The LMA Classic is a conventional supraglottic airway device without video guidance. It will be used for airway management during general anesthesia according to the standardized study protocol.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Oropharyngeal Leak Pressure (OLP)
Time Frame: Immediately after successful laryngeal mask placement, before the start of surgery

Oropharyngeal leak pressure will be measured after successful placement of the assigned laryngeal mask and establishment of effective ventilation. OLP will be recorded in cmH2O as the airway pressure at which an audible oropharyngeal leak is detected during a standardized leak test.
Immediately after successful laryngeal mask placement, before the start of surgery

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
First-attempt insertion success
Time Frame: During initial laryngeal mask insertion

Proportion of participants in whom effective ventilation is achieved after the first insertion attempt of the assigned laryngeal mask.
During initial laryngeal mask insertion
Overall insertion success
Time Frame: During laryngeal mask insertion, up to 3 attempts

Proportion of participants in whom effective ventilation is achieved with the assigned laryngeal mask within the maximum number of insertion attempts permitted by the study protocol.
During laryngeal mask insertion, up to 3 attempts
Laryngeal mask insertion time
Time Frame: During laryngeal mask insertion

Time in seconds from introduction of the assigned laryngeal mask into the mouth until establishment of effective ventilation.
During laryngeal mask insertion
Number of insertion attempts
Time Frame: During laryngeal mask insertion

Number of attempts required to achieve successful placement and effective ventilation with the assigned laryngeal mask.
During laryngeal mask insertion
Need for additional airway maneuvers
Time Frame: During laryngeal mask insertion

Proportion of participants requiring additional maneuvers to achieve satisfactory placement and ventilation.
During laryngeal mask insertion
Peak inspiratory pressure
Time Frame: At 5 and 30 minutes after successful laryngeal mask placement

Peak inspiratory airway pressure measured in cmH2O during mechanical ventilation.
At 5 and 30 minutes after successful laryngeal mask placement
End-tidal carbon dioxide
Time Frame: At 5 and 30 minutes after successful laryngeal mask placement

End-tidal carbon dioxide (EtCO2) measured during mechanical ventilation.
At 5 and 30 minutes after successful laryngeal mask placement
Heart Rate
Time Frame: At baseline, immediately after successful laryngeal mask placement, and at 5 and 30 minutes after placement

Heart rate will be recorded in beats per minute (bpm).
At baseline, immediately after successful laryngeal mask placement, and at 5 and 30 minutes after placement
Blood staining on the laryngeal mask
Time Frame: Immediately after device removal

Presence of visible blood staining on the laryngeal mask after removal.
Immediately after device removal
Postoperative sore throat
Time Frame: At 1 and 24 hours after surgery

Presence of patient-reported sore throat following general anesthesia.
At 1 and 24 hours after surgery
Postoperative hoarseness
Time Frame: At 1 and 24 hours after surgery

Presence of patient-reported hoarseness following general anesthesia.
At 1 and 24 hours after surgery
Airway-related adverse events
Time Frame: From laryngeal mask insertion through postoperative observation, assessed up to 24 hours after surgery

Occurrence of airway-related adverse events, including laryngospasm and clinically evident regurgitation.
From laryngeal mask insertion through postoperative observation, assessed up to 24 hours after surgery
Arterial Pressure
Time Frame: At baseline, immediately after successful laryngeal mask placement, and at 5 and 30 minutes after placement

Arterial pressure will be recorded in mmHg.
At baseline, immediately after successful laryngeal mask placement, and at 5 and 30 minutes after placement

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Hanoi Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 16, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 16, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 23, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 7, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 2, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2026

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HMU-SAFELM-CLASSIC-2026-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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