Admission heart rate and in-hospital course of patients with Takotsubo syndrome
Background: In-hospital course of patients with Takotsubo syndrome (TS) is quite heterogeneous and life-threatening complications are not uncommon in the acute phase. The role of heart rate (HR) as a predictor of prognosis has not been sufficiently investigated in this setting. The study aims to assess the impact of HR at presentation on in-hospital course of patients with TS. Methods: The study population included 221 patients with TS enrolled in a multicentric registry. HR at admission was evaluated on the first electrocardiogram. According to tertile distribution of HR at presentation, 3 groups were identified: Group A (HR ≤ 76 beats per minute (bpm), n = 76), Group B (HR 77–95 bpm, n = 74) and Group C (HR > 95 bpm, n = 71). Acute in-hospital complications were defined as occurrence of severe pump failure and major arrhythmias. Results: 32 (14.4%) patients experienced complicated in-hospital course. HR on admission was significantly higher (108 bpm vs. 85 bpm; p