Critically ill patients often require tracheal intubation for mechanical ventilation, and timely weaning is crucial for airway management and reducing complications. However, there is currently a lack of an effective tool to predict weaning time in critically ill patients. This retrospective study established an effective nomogram model for predicting the time of weaning from mechanical ventilation in abdominal trauma patients by considering multiple perspectives. The model has been validated and demonstrated good performance in terms of discrimination, calibration, and clinical utility. Moreover, the model can effectively predict the prognosis of critically ill patients. The findings of this study have important implications for guiding respiratory management in clinically critically ill patients, particularly trauma patients.

Inclusion Criteria:

• (1) with information on survival status and time;
• (2) aged 18-80 years;
• (3) admitted to ICU;
• (4) with abdominal CT performed within 1-week post-trauma;
• (5) use of mechanical ventilation.

Exclusion Criteria:

• (1) low-quality CT images;
• (2) history of mental illness.

Patients with abdominal trauma admitted to the General Surgical Department of Jinling Hospital from January 2010 to April 2023 were screened for eligibility.