Context

The mainstay of treatment for patients presenting with non-ST-elevation acute coronary syndrome (NSTE-ACS) is medical therapy, early coronary angiography and revascularisation. A routine invasive strategy has been shown to reduce all-cause death and myocardial infarction  compared with a conservative approach at 5 years.1 Therefore, an early invasive strategy with intent to perform revascularisation is advocated in the 2014 American and European guidelines with a class I recommendation.2 3 While immediate angiography is recommended for extremely high-risk patients (eg, haemodynamic or electrical instability, persistent angina, heart failure or worsening mitral regurgitation), the optimal timing for an invasive approach in patients …