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Gastric Residual Volume Assessment by Stomach Ultrasound Compared to Aspiration in the Intensive Care Unit

Gastric Residual Volume Assessment by Stomach Ultrasound Compared to Aspiration in the Intensive Care Unit patients

Status
Completed
Phases
Unknown
Study type
Observational
Source
ANZCTR
Registry ID
ACTRN12624000928516
Enrollment
30
Registered
2024-08-01
Start date
2024-08-01
Completion date
2024-10-10
Last updated
2025-09-08

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

Conditions

None listed

Brief summary

In critically ill patients, especially those requiring mechanical ventilation, enteral nutrition is a fundamental aspect of metabolic support. When oral feeding is insufficient to meet nutritional needs, enteral feeding becomes the preferred method of nutritional support. However, more than 50% of ICU patients experience gastric dysmotility, which leads to reduced rates of gastric emptying. This can result in several complications, such as regurgitation and aspiration, increasing the risk of developing pneumonia. Therefore, monitoring gastric emptying is an essential part of ICU management, aimed at reducing these risks and making informed decisions regarding nutritional support. We hypothesize that there will be a close relationship between ultrasound of the stomach and aspiration for the assessment of gastric residual volume in patients admitted to the intensive care unit. In a convenience sample of 30 adult patients admitted to the intensive care unit, we will Sequential assessment of gastric residual volume performed first by ultrasound of the stomach followed by aspiration of the stomach contents with the volume of the aspirated fluid measured. Two ultrasound procedures will be performed by two independent intensive care doctors. Aspiration of the stomach contents will be performed by the patient’s bedside critical care nurse immediately following completion of the 2nd ultrasound.

Interventions

In patients where aspiration of gastric contents will occur regardless of their involvement in this study, sequential assessment of gastric residual volume performed first by repeated ultrasound examinations of the stomach followed by aspiration of the stomach contents with the volume of the aspirated fluid then measured will be performed. The two ultrasound procedures will be performed by two independent intensive care doctors, with each intensive care doctor performing one ultrasound procedure

In patients where aspiration of gastric contents will occur regardless of their involvement in this study, sequential assessment of gastric residual volume performed first by repeated ultrasound examinations of the stomach followed by aspiration of the stomach contents with the volume of the aspirated fluid then measured will be performed. The two ultrasound procedures will be performed by two independent intensive care doctors, with each intensive care doctor performing one ultrasound procedure each. Each ultrasound procedure is anticipated to take 15 minutes. Aspiration of the stomach contents will be performed by the patient’s bedside critical care nurse immediately following completion of the 2nd ultrasound. The total duration of the two ultrasound assessments and then the aspiration of stomach contents is anticipated to be 45-50 minutes. Participant's will be those already in the ICU and deemed necessary to have aspiration of stomach contents within routine care.

Sponsors

Austin Health
Lead SponsorHospital

Eligibility

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

Inclusion criteria

Aged equal to or greater than 18 years Have a nasogastric tube or orogastric tube in place as a part of routine care Admitted to intensive care unit

Exclusion criteria

• Neuromuscular disease Admitted to the intensive care unit following gastric surgery Known past medical history that includes gastric surgery or known gastric motility disorders Presence of upper gastrointestinal tract abnormalities, gastric tumours of hiatal hernia Suspected or confirmed pregnancy

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026