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Diagnosis of pulmonary embolism (based on European Society of Cardiology guidelines and National Institute for Health and Care Excellence CG144).3,5 aCardiac arrest; systolic blood pressure <90 mmHg or drop ≥40 mmHg for 15 minutes not related to new-onset arrhythmia, hypovolaemia or sepsis. CTPA = computed tomography pulmonary angiography; PE = pulmonary embolism; VQ = ventilation perfusion.
