Bedside Dynamic Digital Radiography Does Not Independently Predict Post-Extubation Respiratory Decline in Small ICU Cohort

In 56 ICU patients, DDR-derived post-extubation lung-area excursion was not independently associated with respiratory deterioration after adjusting for age. Exploratory XGBoost/SHAP flagged it as a contributor, but results are hypothesis-generating only.

• Retrospective exploratory analysis of a prospectively collected single-center cohort (n=56); DDR performed immediately before and within 24 h after extubation; outcome was any increase in oxygen supplementation before ICU discharge.
• Logistic regression found no significant association between post-extubation lung-area excursion and respiratory deterioration after age adjustment (exact OR/CI not reported in source); age and pre-extubation respiratory rate differed significantly between groups.
• Key limitations: very small sample (n=56), single center, no external validation — authors explicitly caution against clinical use pending larger prospective trials.

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