An observational study in Delayed Gastric Emptying, Diabetes Mellitus and Pulmonary Aspiration, sponsored by Kutahya Health Sciences University. Recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-04-08.
Sponsored by Kutahya Health Sciences University · Observational
Delayed gastric emptying increases the risk of pulmonary aspiration during general anesthesia. Diabetes mellitus and poor long-term glycemic control have been associated with impaired gastric motility. Hemoglobin A1c (HbA1c) is a marker of long-term glycemic control; however, its relationship with gastric emptying in surgical patients is not fully understood.
This prospective observational study aims to evaluate the association between HbA1c levels and gastric emptying using preoperative bedside gastric ultrasonography. Adult patients scheduled for elective surgery under general anesthesia will undergo gastric ultrasound examination after standard fasting. Gastric antral cross-sectional area and estimated gastric volume will be assessed and compared according to HbA1c levels.
The findings of this study may help improve preoperative risk stratification for aspiration and support individualized anesthetic management in patients with impaired glycemic control.
This prospective observational study is designed to evaluate the relationship between hemoglobin A1c (HbA1c) levels and gastric emptying in adult surgical patients using bedside gastric ultrasonography.
Adult patients aged 18 to 70 years, scheduled for elective surgery under general anesthesia, will be enrolled. After standard preoperative fasting according to current guidelines, all participants will undergo a preoperative gastric ultrasound examination performed by a trained anesthesiologist. The gastric antrum will be assessed in standardized positions, and the antral cross-sectional area will be measured. Estimated gastric volume will be calculated using validated ultrasound-based formulas.
HbA1c levels will be obtained from preoperative laboratory records, and patients will be analyzed according to their HbA1c values. Gastric ultrasound findings, including antral cross-sectional area and estimated gastric volume, will be compared across different HbA1c levels.
Demographic data, anthropometric measurements including body mass index and waist circumference, fasting duration, and relevant clinical characteristics will also be recorded. The primary objective is to assess the association between HbA1c levels and gastric emptying parameters. Secondary analyses will explore potential factors associated with delayed gastric emptying.
The results of this study may contribute to improved preoperative risk assessment for pulmonary aspiration and support individualized anesthetic management in patients with impaired glycemic control.
307 studies on the registry are indexed under Gastroparesis; 68 are open to participants now.
This study's planned enrollment of 134 is above the median of 100 across 77 observational studies indexed under Gastroparesis.
Browse Gastroparesis studies →Kutahya Health Sciences University is the lead sponsor of 209 studies on the registry; 46 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult patients aged 18 to 70 years scheduled for elective surgery under general anesthesia at a tertiary care hospital.
Adults aged 18 to 70 years. ASA physical status I-III. Scheduled for elective surgery under general anesthesia. Ability to provide written informed consent.
Exclusion Criteria:
Scheduled for emergency surgery. Refusal or inability to provide informed consent. Pregnancy. Age \<18 years or >70 years. History of gastric surgery. Neuromuscular disease. Current use of opioid or anticholinergic medications.
Adult patients scheduled for elective surgery under general anesthesia who undergo preoperative bedside gastric ultrasonography as part of an observational study.
Gastric emptying assessed by gastric ultrasound
Gastric emptying will be assessed preoperatively using bedside gastric ultrasonography by measuring gastric antrum cross-sectional area and estimating gastric volume with validated ultrasound-based methods.
Time frame: The preoperative period,immediately before induction of anesthesia
Plan to share: No
No publications or documents are linked to this record.
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Kutahya Health Sciences University