ModerateRespiratoryPulmonary embolism in postpartum womanuk-plab-1
A 27-year-old woman presents with sudden onset dyspnoea and pleuritic chest pain. She is 4 days post-partum after an emergency caesarean section. Her respiratory rate is 30/min, heart rate 120 bpm, blood pressure 100/70 mmHg and oxygen saturation 90% on air. You suspect pulmonary embolism. What is the most appropriate immediate investigation?