A 23-year-old Greenwich University student died following a routine injection which should have seen her discharged from hospital within two hours, an inquest heard. Brooke Richardson, from Rendlesham in Suffolk, died from cardiac arrest after undergoing an Ajmaline heart test at St Thomas' Hospital in London on December 12 2019. The procedure, which pumps the chemical into a patient's vein to help diagnose the heart disorder Brugada syndrome, would normally see a patient return home after two hours. In very rare cases, patients can have an arrhythmia attack that would require doctors to act fast and use a defibrillator to resuscitate a patient and stabilise the heartbeat.