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NCT Number: NCT07488468

Quality Improvement Project to Reduce Preoperative Fasting Times Before Elective Procedures

This single-center quality improvement project evaluates preoperative fasting times before elective procedures requiring anesthesiology care. The project aims to reduce prolonged fasting for clear fluids by implementing a local standard operating procedure (SOP) allowing patients to drink clear liquids until being called to the operating room ("drink until called"), supported by staff education and fasting instruction cards. Fasting times and selected perioperative outcomes will be assessed before and after implementation.

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Key information

About this study

Traditionally, surgical patients are instructed to fast for prolonged periods to reduce the risk of pulmonary aspiration. International guidelines recommend fasting from clear liquids for 2 hours prior to elective procedures, yet real-world fasting often extends to 6-10 hours, which can impair patient well-being and may contribute to complications such as dehydration, hypoglycemia, postoperative nausea and vomiting, and delirium-particularly in older or frail patients. This quality improvement project follows the Plan-Do-Study-Act (PDSA) framework.

Plan: Review evidence and decide to implement "drink until called to the OR." Do: Train anesthesiology staff, adapt local SOPs, provide oral patient instructions, and introduce fasting instruction cards for patients and staff.

Study: Record and analyze fasting times and fluid intake prior to anesthesia induction; assess effectiveness and adjust strategies.

Act: Add further staff education, posters, and short instructional screencasts to reinforce the updated fasting guidance.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

  1. Preoperative fasting time (clear liquids and solids)

    Time frame: At anesthesia induction.

    Time interval between last intake of clear liquids and anesthesia induction. Time interval between last solid meal and anesthesia induction.

  2. PACU length of stay

    Time frame: PACU admission to discharge.

    PACU length of stay

Secondary outcomes

  1. Preoperative fasting time (clear liquids and solids)

    Time frame: At anesthesia induction (pre vs post implementation periods).

    Time interval between last intake of clear liquids and anesthesia induction. Time interval between last solid meal and anesthesia induction.

  2. Patient satisfaction regarding fasting

    Time frame: immediately after the intervention/procedure/surgery up to 1 day postoperatively

    Patient satisfaction regarding fasting (questionnaire)

  3. Perioperative complications

    Time frame: Intraoperative and immediate postoperative period (PACU).

    Perioperative complications (e.g., nausea, vomiting, regurgitation/aspiration)

  4. Postoperative pulmonary and gastrointestinal complications

    Time frame: During the hospital stay up to 30 days

    Pneumonia,Aspiration, nausea and vomiting

  5. Delirium occurrence

    Time frame: During the hospital stay, up to 30 days

    Occurance of postoperative delir

  6. Hospital length of stay and in-hospital mortality

    Time frame: Until hospital discharge / up to 30 days

    Hospital length of stay and in-hospital mortality

  7. Acute kidney injury (AKI)

    Time frame: Within the first 3 postoperative days.

    Acute kidney injury (AKI) (creatinine increase)

  8. ICU/IMC admission

    Time frame: During the hospital stay up to 30 days

    ICU/IMC admission (planned/unplanned) and duration

Study contacts

Contact information is provided by the study sponsor or research team.

Brigitte Clausen

CONTACT

[email protected]

Marit Habicher, Dr.

CONTACT

[email protected]

+4964198544401

Sponsors and collaborators

Lead sponsor

University of Giessen

Other

Registry information

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Mar 23, 2026
Registry last updated
Mar 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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