AspirationNCT07823413
Airway Bundle With Gastric Ultrasound Guidance for Aspiration Prevention During Emergency Intubation in Assiut University Hospital.
A study testing gastric ultrasound scan in people with Aspiration, run by Assiut University.
Trial summary
Emergency endotracheal intubation is a high-risk procedure performed frequently in critically ill patients, with major complications, including pulmonary aspiration, reported across a substantial proportion of cases (1). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Aspiration
- What is being tested?
- gastric ultrasound scan
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 134 participants
- Where
- No sites listed yet
- Study dates
- Oct 2026to Dec 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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
- aged ≥ 18 years, presenting to the ED with a trauma-related indication and requiring urgent or semi-urgent endotracheal intubation, as determined by the treating emergency physician.
Who cannot join
- ● Allergy to local anesthetics, muscle relaxants, sedatives or dexmedetomidine.
- History suggestive of intestinal obstruction or gastric outlet obstruction.
- Known pregnancy.
- Morbid obesity.
- History of gastric/esophageal surgery.
- Gastroesophageal reflux disease (GERD), or any other pathology affecting the physiology or function of the gastrointestinal tract or the lower esophageal sphincter (LES).
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- Patients in cardiac or respiratory arrest or any patients requiring crash intubation.
- Patients with a gastric or duodenal tube in situ.
- Anticipated difficult airway for reasons unrelated to aspiration risk (e.g., known airway tumor), where bundle elements would be superseded by a dedicated difficult-airway protocol.
- Patients with vertebral and spinal trauma.
- Clinically evident aspiration prior to gastric ultrasound assessment (e.g., witnessed aspiration before ED arrival).
- Anticipated interval between the gastric ultrasound scan and induction exceeding 30 minutes, where a significant change in gastric content cannot be excluded.
- Patients/guardians not consenting to take part in the study.
About this study
Emergency endotracheal intubation is a high-risk procedure performed frequently in critically ill patients, with major complications, including pulmonary aspiration, reported across a substantial proportion of cases (1). Reported aspiration incidence after ED intubation varies widely with definition and case-mix, from as low as 3.5% in early retrospective series (2) up to 22% in trauma-heavy cohorts (3). Aspiration pneumonia specifically has been documented in roughly 8% of contemporary prospective ED intubation cohorts (4), and failure on the first intubation attempt is independently associated with a higher likelihood of aspiration and other adverse events (5).
Aspiration is one of the must-pay-attention-to risk factors in patients undergoing endotracheal intubation due to its linked mortality and morbidity (6). The induction and paralytic agents used in endotracheal intubation weaken the protective airway reflexes and the lower esophageal sphincter tone that can lead to aspiration of the gastric content (6).
Read more
Point-of-care gastric ultrasound (GUS) has been a reliable tool to assess gastric content preoperatively and in the Emergency Department (7). Previous studies mentioned the use of GUS as a qualitative tool (Perlas criteria) and as a quantitative tool using the Cross-Sectional Area of the Antrum (CSA) in the supine and right lateral decubitus (RLD) positions (7,8). CSA can be calculated by a known formula, CSA = (AP × CC) x π/4, where AP is the anteroposterior diameter and CC is the craniocaudal diameter (7). Gastric volume can be calculated with CSA and the age of the patient using the Perlas formula, GV = 27.0 + (14.6 × CSA) - (1.28 × Age) (7). The Perlas formula applies only to non-pregnant adults whose BMI is less than 40 (8). The Perlas grading system and CSA-based volume model have subsequently been validated against gastroscopically-suctioned gastric volumes in adult surgical patients (9), and combining the qualitative grade with the CSA-derived volume has been shown to sharply improve discrimination of a full stomach, with a pre-test probability of 50% rising to roughly 98% following a positive scan (10). GUS has multiple studies assessing its diagnostic accuracy and its association to aspiration (11); nevertheless, it hasn't been studied as a guide to the airway management of patients with the risk of aspiration undergoing endotracheal intubation.
The present trial asks the next question: among ED trauma patients found to have a high risk of aspiration during endotracheal intubation, does a focused, low-resource bundle lower the rate of aspiration, compared with standard unstructured practice?
- Conditions
- Aspiration
- Being tested
- gastric ultrasound scan
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
gastric ultrasound scanProcedure or surgery
A low-frequency curvilinear probe is used. The patient is scanned in the right lateral decubitus position (or supine, if positioning is limited - for example, due to spinal precautions).
| Study group | Role | What they receive |
|---|---|---|
| study group | Active comparator | Gastric ultrasound scan Receives: Procedure: gastric ultrasound scan |
| control group | No intervention | routine (standard) airway management |
What is being measured
The primary outcome is the main question the study is designed to answer.
incidance of peri-intubation aspiration
direct visualization of gastric contents in the oropharynx or airway during laryngoscopy/intubation.
Measured: within 72 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Sep 2026
- Study startOct 2026 (estimated)
- Primary completionSep 2027 (estimated)
- Study completionDec 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AspirationStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 134 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Abdelrahman Mahmoud Shehata, Assiut University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07823413
- Sponsor's protocol ID
- GUS Aspiration Prevention
- Status last verified
- Sep 2026
- First submitted
- 4 Sep 2026
- Last updated
- 16 Sep 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Airway Bundle With Gastric Ultrasound Guidance for Aspiration Prevention During Emergency Intubation in Assiut University Hospital.
- ClinicalTrials.gov ID
- NCT07823413
- Acronym / sponsor ID
- GUS Aspiration Prevention
- Conditions
- Aspiration
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 134 participants (estimated)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Study start
- Oct 2026 (estimated)
- Primary completion
- Sep 2027 (estimated)
- Study completion
- Dec 2027 (estimated)
- First posted
- 16 Sep 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Emergency endotracheal intubation is a high-risk procedure performed frequently in critically ill patients, with major complications, including pulmonary aspiration, reported across a substantial proportion of cases (1). Reported aspiration incidence after ED intubation varies widely with definition and case-mix, from as low as 3.5% in early retrospective series (2) up to 22% in trauma-heavy cohorts (3). Aspiration pneumonia specifically has been documented in roughly 8% of contemporary prospective ED intubation cohorts (4), and failure on the first intubation attempt is independently associated with a higher likelihood of aspiration and other adverse events (5).
Aspiration is one of the must-pay-attention-to risk factors in patients undergoing endotracheal intubation due to its linked mortality and morbidity (6). The induction and paralytic agents used in endotracheal intubation weaken the protective airway reflexes and the lower esophageal sphincter tone that can lead to aspiration of the gastric content (6).
Point-of-care gastric ultrasound (GUS) has been a reliable tool to assess gastric content preoperatively and in the Emergency Department (7). Previous studies mentioned the use of GUS as a qualitative tool (Perlas criteria) and as a quantitative tool using the Cross-Sectional Area of the Antrum (CSA) in the supine and right lateral decubitus (RLD) positions (7,8). CSA can be calculated by a known formula, CSA = (AP × CC) x π/4, where AP is the anteroposterior diameter and CC is the craniocaudal diameter (7). Gastric volume can be calculated with CSA and the age of the patient using the Perlas formula, GV = 27.0 + (14.6 × CSA) - (1.28 × Age) (7). The Perlas formula applies only to non-pregnant adults whose BMI is less than 40 (8). The Perlas grading system and CSA-based volume model have subsequently been validated against gastroscopically-suctioned gastric volumes in adult surgical patients (9), and combining the qualitative grade with the CSA-derived volume has been shown to sharply improve discrimination of a full stomach, with a pre-test probability of 50% rising to roughly 98% following a positive scan (10). GUS has multiple studies assessing its diagnostic accuracy and its association to aspiration (11); nevertheless, it hasn't been studied as a guide to the airway management of patients with the risk of aspiration undergoing endotracheal intubation.
The present trial asks the next question: among ED trauma patients found to have a high risk of aspiration during endotracheal intubation, does a focused, low-resource bundle lower the rate of aspiration, compared with standard unstructured practice?
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| study group | Active comparator | Procedure: gastric ultrasound scanGastric ultrasound scan |
| control group | No intervention | –routine (standard) airway management |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- aged ≥ 18 years, presenting to the ED with a trauma-related indication and requiring urgent or semi-urgent endotracheal intubation, as determined by the treating emergency physician.
Key exclusion criteria (13 listed)
- ● Allergy to local anesthetics, muscle relaxants, sedatives or dexmedetomidine.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| gastric ultrasound scanA low-frequency curvilinear probe is used. The patient is scanned in the right lateral decubitus position (or supine, if positioning is limited - for example, due to spinal precautions). | Procedure or surgery | study group |
Primary outcome
incidance of peri-intubation aspiration
Time frame: within 72 hours
direct visualization of gastric contents in the oropharynx or airway during laryngoscopy/intubation.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 Sep 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing gastric ultrasound scan in people with Aspiration, run by Assiut University.
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 1 inclusion and 13 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: opening soon, as of the sponsor's last update on 16 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
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?
This study is still under way. Results are not available in the source record yet.
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?
incidance of peri-intubation aspiration (time frame: within 72 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 16 Sep 2026.