Construction and verification of risk prediction model of pulmonary embolism in ICU patients with COPD in acute exacerbation based on age, SAPSII score, braking state, and mechanical ventilation.

This finding is highly significant for clinical decision-making, as early identification of high-risk patients for PE enables healthcare providers to implement proactive preventive and intervention measures, thereby reducing the incidence of PE and improving individual prognosis.

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While ABCD grade ( P = 0.251), complications ( P = 0.120), and Anthonisen grade ( P = 0.157) did not reach statistical significance, they were retained in the model due to: Clinical plausibility: ABCD grade correlates with systemic inflammation, a known thrombosis driver.

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