15th September 2020

A 30-year-old male presents with exertional breathlessness

A 30-year-old male presents with exertional breathlessness. He is usually fit and well but is now struggling with his job as a construction worker. On examination, there is significant parasternal heave. You suspect a diagnosis of pulmonary arterial hypertension.

Which of the following is the gold standard diagnostic investigation?

Select the SINGLE most appropriate option from the list below. Select ONE option only.