NT-proBNP/cardiac troponin T ratio >7.5 on the second day of admission can differentiate Takotsubo from acute coronary syndrome with good accuracy

Takotsubo syndrome (TTS) is not usually diagnosed until patients with suspected acute coronary syndrome (ACS) and echocardiographically detected apical aneurysm are found to have "normal" coronary angiography (CA). Our aim was to explore whether cardiac biomarkers can contribute to the early diagnosis of TTS.