AUTHOR=Lopez-Pais Javier , Izquierdo Coronel Bárbara , Raposeiras-Roubín Sergio , Álvarez Rodriguez Leyre , Vedia Oscar , Almendro-Delia Manuel , Sionis Alessandro , Martin-Garcia Agustin C. , Uribarri Aitor , Blanco Emilia , Martín de Miguel Irene , Abu-Assi Emad , Galán Gil David , Sestayo Fernández Manuela , Espinosa Pascual Maria Jesús , Agra-Bermejo Rosa María , López Otero Diego , García Acuña Jose María , Alonso Martín Joaquín Jesús , Gonzalez-Juanatey Jose Ramón , Perez de Juan Romero Miguel Ángel , Núñez-Gil Iván J. TITLE=Differences Between Takotsubo and the Working Diagnosis of Myocardial Infarction With Nonobstructive Coronary Arteries JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=9 YEAR=2022 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2022.742010 DOI=10.3389/fcvm.2022.742010 ISSN=2297-055X ABSTRACT=Aim

Whether Takotsubo syndrome (TTS) should be classified within myocardial infarction with non-obstructive coronary arteries (MINOCAs) is still controversial. The aim of this work was to evaluate the main differences between TTS and non-TTS MINOCAs.

Methods and Results

A cohort study based on two prospective registries: TTS from the RETAKO registry (N:1,015) and patients with non-TTS MINOCAs from contemporary records of acute myocardial infarction from five 5 national centers (N:1,080). Definitions and management recommended by the ESC were used. Survival analysis was based on the Cox regression analysis; propensity score matching (PS) was created to adjust prognostic variables. Takotsubo syndrome were more often women (85.9 vs. 51.9%; p < 0.001) and older (69.4 ± 12.5 vs. 64.5 ± 14.1 years; p < 0.001). Atrial fibrillation (AF) was more frequent in non-TTS MINOCAs (10.4 vs. 14.4%; p = 0.007). Psychiatric disorders were more prevalent in TTS (15.5 vs. 10.2%, p < 0.001). In-hospital mortality and complications were higher in TTS: 3.4 vs. 1.8%, (p = 0.015), and 25.8 vs. 11.5%, (p < 0.001). Global mortality before PS matching was 16.1% in non-TTS MINOCAs and 8.1% in TTS. Median follow-up was 32.4 months; after PS matching, TTS had fewer major adverse cardiovascular events (MACEs): hazard ratio (HR) 0.59; 95% CI 0.42–0.83. There were no differences in global mortality (HR 0.87; CI: 0.64–1.19), but TTS had lower cardiovascular mortality (HR 0.58; CI: 0.35–0.98).

Conclusion

Compared to the rest of MINOCAs, TTS presents a different patient profile and a more aggressive acute phase. However, its long-term cardiovascular prognosis is better. These results support that TTS should be considered a separate entity with unique characteristics and prognosis.