Letting patients drink clear fluids until called to the operating room to shorten pre-surgery fasting

Quality Improvement Project to Reduce Preoperative Fasting Times Before Elective Procedures

Observational University of Giessen · NCT07488468

This project will try letting elective procedure patients drink clear liquids until they're called to the operating room to see if fasting times, comfort, and perioperative outcomes improve.

Quick facts

Study typeObservational
Enrollment1000 (estimated)
SexAll
SponsorUniversity of Giessen Academic / other
Locations1 site (Giessen)
Trial IDNCT07488468 on ClinicalTrials.gov

What this trial studies

This single-center quality improvement initiative uses a Plan-Do-Study-Act framework to implement a local standard operating procedure allowing clear liquids until patients are called to the operating room. The team will train anesthesiology staff, provide patient fasting instruction cards, and roll out supporting materials such as posters and short screencasts. Fasting durations and selected perioperative outcomes (e.g., fluid intake, postoperative nausea and vomiting, pulmonary complications, and delirium) will be recorded before and after implementation. Data will be analyzed to guide iterative adjustments to the local protocol.

Who should consider this trial

Good fit: Patients scheduled for elective surgery or interventions requiring anesthesiology care (general anesthesia, regional anesthesia, sedation, or anesthesiology standby) at the site are the intended participants, excluding those already sedated or mechanically ventilated.

Not a fit: Patients who are already sedated, intubated, or mechanically ventilated, those undergoing emergency procedures, or patients with specific medical orders to remain NPO are unlikely to benefit from this initiative.

Why it matters

Potential benefit: If successful, patients may have shorter preoperative fasting with less dehydration and nausea, improved comfort, and potentially fewer postoperative complications such as delirium or pulmonary issues.

How similar studies have performed: International guidelines support a 2-hour clear-liquid fast and prior single-center quality-improvement programs have successfully shortened fasting times and improved patient comfort, so this approach builds on existing practice-change evidence.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All patients elective surgery or intervention requiring with anesthesiology care general anesthesia, regional anesthesia, sedation, or anesthesiology stand-by

Exclusion Criteria:

* Already sedated, intubated, and mechanically ventilated patients

Where this trial is running

Giessen

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Preoperative FastingPerioperative Patient Comfort / Quality of CarePostoperative Nausea and VomitingPostoperative Pulmonary ComplicationsDeliriumPreoperative fastingclear liquidsquality improvement
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.