Pilot Study of Anesthesiologists' Preoperative Prediction of Postoperative Intensive Care Unit Admission

A Prospective Observational Pilot Study Evaluating Anesthesiologists' Preoperative Clinical Prediction of Postoperative Intensive Care Unit Admission in Adult Surgical Patients

This prospective observational pilot study will evaluate how accurately anesthesiologists can predict, before a procedure, whether an adult patient will require admission to an intensive care unit (ICU) after surgery or an endoscopic procedure.

Before each procedure, the anesthesiologist will record whether postoperative ICU care is expected and the clinical factors influencing this assessment. No changes will be made to the patient's usual medical care. After the procedure, the researchers will record whether the patient was admitted to the ICU and whether the admission was planned or unplanned. Additional information, including ICU and hospital length of stay, need for organ support, and in-hospital mortality, will also be collected when applicable.

The pilot study will also assess whether the planned data collection process is practical and whether the required study information can be collected completely before conducting the main prospective study.

Inclusion Criteria:

• Age 18 years or older.
• Undergoing an eligible surgical or endoscopic procedure on a predefined study day.
• ASA Physical Status I-II and undergoing a major surgical or endoscopic procedure, or ASA Physical Status III-V and undergoing an eligible surgical or endoscopic procedure.
• Preoperative anesthesiology assessment completed before the procedure.

Exclusion Criteria:

• Age younger than 18 years.
• ASA Physical Status I-II and undergoing a minor or non-major procedure.
• Undergoing cardiac surgery.
• Already admitted to an intensive care unit before the index procedure.
• The planned surgical or endoscopic procedure is not ultimately performed.
• The required preoperative assessment cannot be completed before the procedure.