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. 2021 Jan 5;325(1):59–68. doi: 10.1001/jama.2020.23567

Figure. Study Flow of Patients Hospitalized With COPD With Acutely Worsening Respiratory Symptoms and Prevalence of Pulmonary Embolism .

Figure.

aMinor protocol violation. bThree patients with pulmonary embolism (PE) were not taking long-term anticoagulation before inclusion. cSpiral computed tomographic pulmonary angiography (CTPA) inconclusive (compression US, negative) for 1 patient; V̇/Q̇, high probability; CTPA, positive for PE. dTwo had a PE history but not receiving long-term anticoagulation before inclusion. eCTPA inconclusive for 4 patients: compression US negative; V̇/Q̇ not performed; CTPA, positive for PE. fMajor protocol violation. gThree patients, atrial fibrillation; 2, cancer, and 9, isolated PE not validated. hVenous thromboembolism (VTE) assessment at admission for all 3 patients.