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– The ventricular septum (VS) curvature ratio measured on CTPA strongly predicted 30‑day clinical deterioration in normotensive acute pulmonary embolism (PE) in a large prospective multicentre cohort (n=3,310).
– Patients with VS curvature ratios ≥1.90 or with straight/bowed septa toward the left ventricle had markedly higher odds of deterioration (OR ≈23) compared with those with ratios <1.60.
