INTRODUCTION: TakoTsubo Cardiomyopathy (TCM), transient apical ballooning o broken heart syndrome is a transient cardiac syndrome most commonly presented after severe emotional or physical stress, producing acute myocardial dysfunction, without significant coronary stenosis. Its pathogenesis is unknown, with multiple proposed theories and a higher incidence in postmenopausal women. CASE REPORT: 41-year-old female with no relevant medical history. While resting at home, she presented a severe episode of retrosternal pain, irradiated to both arms and associated with adrenergic symptoms, without related emotional or stressful factors. Twenty minutes after onset, she was brought to a primary care facility in Neltume, Los Rios Region, where electrocardiogram (EKG) showed ST-segment elevation on inferior and anterior leads. She was then transferred to the referral center, where after five hours of the beginning of symptoms, follow-up EKG showed spontaneous reperfusion criteria, correlated with spontaneous resolution of symptoms during transferring. Coronary angiography showed no significant stenosis and ventriculography confirmed apical ballooning compatible with TCM. The patient was referred to the Naval Hospital of Talcahuano, where she improved clinically, being discharged seven days later with standard treatment for acute coronary syndrome. DISCUSSION: As part of the differential diagnosis of acute coronary syndrome, early suspicion and access to cardiac catheterization provides the basis for confirming the diagnosis. Treatment is mainly conservative, with imaging follow-up for possible complications until recovery of the ventricular function. [ABSTRACT FROM AUTHOR]