A 32-year old mother was presented with the sudden onset of chest pain, shortness of breath and crushing fatigue. Her previous history revealed that: During her first pregnancy, the patient was diagnosed with Hemolysis Elevated Liver Enzymes Low Platelet count (HELLP) syndrome, First child was born after 36 weeks, The next two pregnancies were induced at 39 and 38 weeks respectively because of her hypertension, At the ER, the patient was given a prescription for heartburn medication. She was already taking beta blockers (for a left over from the recent hypertensive pregnancy), Otherwise fit, over the following months, she had several heart tests but was denied any cardiac anomalies (reports not available),   Which tests would you recommend to help define her condition?

* This case is from Docplexus editorial team for educative purpose only. Source: The Lancet