A 50 year old lady is admitted to the coronary care unit for investigation of resistant hypertension and chest pain. A cardiac arrest call is put out because she drops her blood pressure to 60/30mmHg, upon your arrival she is pale, diaphoretic, tremulous with a pulse of 130 bpm and a BP 300/120mmHg. No medications have been administered to account for the hypertension. A similar episode had occurred the previous day.
a. What diagnosis is likely?
b. List 5 treatment measures for the management of the haemodynamic instability associated with this condition.