Comparative Study between Usage of Arterial Blood Gases versus Calculated Pulmonary Contusion Volume in Estimating Prognosis and Potential Complications of Pulmonary Contusion after Blunt Chest Trauma | ||
| The Egyptian Journal of Hospital Medicine | ||
| Volume 101, Issue 1, October 2025, Pages 5298-5307 PDF (585.44 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejhm.2025.461631 | ||
| Abstract | ||
| Background: Pulmonary contusion (PC) is a frequent and potentially fatal complication associated with blunt thoracic trauma. Aim of the work: The goal of this research was to evaluate a comparative analysis of the prognostic value of ABG parameters versus CT-calculated PC volume in predicting complications (pneumonia & ARDS) following blunt chest trauma. Patients and Methods: A prospective comparative study was executed on 50 participants with blunt chest trauma. All participants underwent ABG analysis and chest CT to assess PC volume. Results: As regard ABG in lung contusion cases, PH, PCO2 cannot predict pneumonia but can significantly predict ARDS. Hco3 cannot predict pneumonia nor ARDS. Spo2, PaO2, P/F, Aa DO2, Aa DO2 augmentation, PaO2 deficit, a/A O2 tension ratio can significantly predict pneumonia and ARDS. Both ABG abnormalities and increased contusion volume were associated with higher complication rates. However, CT-based contusion volume demonstrated superior predictive accuracy, particularly for pneumonia and ARDS. Specific cutoff values (>0.19 for pneumonia and >0.429 for ARDS) showed high sensitivity, specificity, and negative predictive value, outperforming individual ABG-derived indices. Conclusions: While both ABG analysis and CT imaging provide important prognostic information, CT-calculated PC volume proved to be a more reliable predictor of complications following blunt chest trauma. | ||
| Keywords | ||
| Arterial Blood Gases; Calculated Pulmonary Contusion Volume; Prognosis; Blunt Chest Trauma | ||
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