The Calgary Acute Pulmonary Embolism (CAPE) score and risk groups for normotensive acute pulmonary embolism (PE) who are high-risk simplified Pulmonary Embolism Severity Index

ScorePatients (n=1498)Adverse in-hospital PE outcome#All cause 30-day mortality
Risk factor
 CT RV/LV ratio ≥1.53326 (21.8)
 Central PA clot+1330 (22.0)
 Heart rate ≥100 beats·min−11702 (43.1)
 SBP 90–100 mmHg171 (4.4)
Risk group
 Low-risk0–21168 (78.0)4 (0.3)44 (3.8)
 Intermediate–low risk3–4199 (13.3)9 (4.5)6 (3.0)
 Intermediate–high risk≥5131 (8.7)16 (12.2)10 (7.6)

Data presented as n or n (%). CT RV/LV: computed tomography angiogram right/left ventricle ratio; PA: pulmonary artery; SBP: systolic blood pressure. #: death secondary to PE, haemodynamic decompensation (systolic blood pressure <90 mmHg for >15 min, catecholamine administration for hypotension, endotracheal intubation or cardiopulmonary resuscitation); : measured by dividing the right and left ventricle diameter at the valvular level of the CT angiogram axial cuts; +: defined as thrombus present within the central pulmonary arteries proximal to a lobar artery.