Gastric Emptying of High Calorie Liquid Meals

Gastric Emptying Clinical Trial

Official title:

Ultrasound Assessment of Gastric Emptying After a Standardized High Calorie Liquid Meal in Adults: a Prospective Observational Double-blind Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05333237
• Other study ID #: 1700_2021
• Status: Completed
• Phase: N/A
• Start date: March 28, 2022
• Est. completion date: June 1, 2022

Study information

• Verified date: August 2022
• Source: Medical University of Vienna
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Perioperative fasting is an essential patient safety measure to reduce the risk of pulmonary aspiration of gastric contents, a rare but potentially catastrophic complication of anesthetic and airway management. Anesthesiologists' concern about aspiration and the increasing awareness towards the negative impact of prolonged restriction of oral intake have shaped the current fasting guidelines. However, due to the perceived safety of prolonged fasting and practical considerations, adoption of the fasting guidelines is suboptimal.

Gastric ultrasound is a quick, non-invasive method to evaluate gastric contents and aspiration risk. Gastric ultrasound can accurately discriminate between solid particles and fluid content, and mathematical models can reliably predict the volume of the gastric contents from the gastric antral area (GAA).

This project aims to use gastric ultrasound to provide new data that can support management strategies in perioperative patients, that ensure both a low aspiration risk and an adequate nutritional support.

The investigators will test the hypothesis that commercially available liquid meals can be safely used preoperatively. A pilot crossover, study on healthy volunteers will be conducted to determine the gastric emptying time of high-calorie drinks, as compared to clear fluid.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 25
• Est. completion date: June 1, 2022
• Est. primary completion date: May 18, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 75 Years

Eligibility

Inclusion Criteria:

• ASA 1 and 2

Exclusion Criteria:

• Allergy or intolerance to any of the study products or the ingredients

• Previous esophageal, gastric, or duodeno-pancreatic surgery

• Gastric banding or large hiatal hernia

• mmobility

• Contraindication to right lateral positioning

• Gastrointestinal diseases and disturbances

• Participation in another, possibly interfering study

• Diabetes mellitus

• Pregnancy

Related Conditions & MeSH terms

• Gastric Emptying

Intervention

Dietary Supplement:
• Intervention #1: ProvideXtra Drink
Fasted subjects will be offered 200 ml of ProvideXtra and will be asked to ingest it at a comfortable rate. Subsequent gastric ultrasound examinations will be performed half-hourly (up to 6 hours) to determine the volume of the gastric contents. The intervention ends when the stomach appears to be empty again on ultrasound.
• Intervention #2: Fresubin Energy Drink
Fasted subjects will be offered 200 ml of Fresubin Energy Drink and will be asked to ingest it at a comfortable rate. Subsequent gastric ultrasound examinations will be performed half-hourly to determine the volume of the gastric contents. The intervention ends when the stomach appears to be empty again on ultrasound.
• Intervention #3: Generic Glucose Solution
Fasted subjects will be offered the glucose solution and will be asked to ingest it at a comfortable rate. Subsequent gastric ultrasound examinations will be performed half-hourly (up to 6 hours) to determine the volume of the gastric contents. The intervention ends when the stomach appears to be empty again on ultrasound.

Locations

Country	Name	City	State
Austria	Medical University Vienna	Vienna

Sponsors (1)

Lead Sponsor	Collaborator
Medical University of Vienna

Country where clinical trial is conducted

Austria, 

References & Publications (5)

Perlas A, Arzola C, Van de Putte P. Point-of-care gastric ultrasound and aspiration risk assessment: a narrative review. Can J Anaesth. 2018 Apr;65(4):437-448. doi: 10.1007/s12630-017-1031-9. Epub 2017 Dec 11. Review. — View Citation

Perlas A, Mitsakakis N, Liu L, Cino M, Haldipur N, Davis L, Cubillos J, Chan V. Validation of a mathematical model for ultrasound assessment of gastric volume by gastroscopic examination. Anesth Analg. 2013 Feb;116(2):357-63. doi: 10.1213/ANE.0b013e318274fc19. Epub 2013 Jan 9. — View Citation

Smith I, Kranke P, Murat I, Smith A, O'Sullivan G, Søreide E, Spies C, in't Veld B; European Society of Anaesthesiology. Perioperative fasting in adults and children: guidelines from the European Society of Anaesthesiology. Eur J Anaesthesiol. 2011 Aug;28(8):556-69. doi: 10.1097/EJA.0b013e3283495ba1. Review. — View Citation

Tacken MCT, van Leest TAJ, van de Putte P, Keijzer C, Perlas A. Ultrasound assessment of gastric volumes of thick fluids: Validating a prediction model. Eur J Anaesthesiol. 2021 Dec 1;38(12):1223-1229. doi: 10.1097/EJA.0000000000001465. — View Citation

Van de Putte P, Perlas A. Ultrasound assessment of gastric content and volume. Br J Anaesth. 2014 Jul;113(1):12-22. doi: 10.1093/bja/aeu151. Epub 2014 Jun 3. Review. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gastric emptying time	Time since ingestion of any of the study products until an empty stomach can be determined on ultrasound	Repeated ultrasound examinations will be performed every 30 minutes after the ingestion of the study product up to 6 hours after ingestion to determine whether the stomach has completely emptied.
Secondary	Gastric volume at prespecified intervals after ingestions	The volume of the gastric content determined using ultrasound	Ultrasound examinations will be repeated every 30 minutes after the ingestion of the study product up to 6 hours and the gastric antrum area and the gastric antrum cross-sectional area will be measured to estimate the volume of the gastric content.