Objective: Patients with Takotsubo syndrome (TTS) present an acute microvascular dysfunction that leads to an impaired myocardial perfusion and, in more severe forms, an impaired epicardial flow. However, clinical relevance of a delayed coronary flow, the coronary slow flow (CSF), has never been investigated. We studied the prognostic value of CSF occurring in the acute phase of TTS. Methods: This cohort study prospectively evaluated patients with a diagnosis of TTS. CSF was defined as angiographically non-obstructive coronary arteries with thrombolysis in myocardial infarction-2 flow. The incidence of overall mortality and major adverse cardiovascular events (MACEs), defined as the composite of TTS recurrence, cardiac rehospitalisation, cerebrovascular events and mortality, was assessed at follow-up. Results: We enrolled 101 patients (mean age 71.0±11.1 years, 86 (85.1%) female); CSF occurred in 18 (17.8%) patients. At admission, patients with CSF presented more frequently with Killip class III/IV, moderate-to-severe left ventricle systolic dysfunction and right ventricle dysfunction. During the index admission, patients with CSF had a higher rate of intrahospital complications (12 (66.7%) vs 28 (33.7%), p=0.01). At long-term follow-up, patients with CSF had a significantly higher occurrence of overall mortality (9 (50%) vs 19 (22.9%), p=0.011), mainly due to non-cardiac causes (89.3%), and a higher rate of MACE (10 (55.5%) vs 27 (32.5%), p=0.06). At multivariable Cox regression, CSF was independently associated with death from any causes. Conclusions: Patients with TTS presenting with CSF have a worse clinical presentation with a higher rate of intrahospital complications and a poor long-term clinical outcome.
Coronary slow flow is associated with a worse clinical outcome in patients with Takotsubo syndrome / Montone, R. A.; Galiuto, L.; Meucci, M. C.; Del Buono, M. G.; Vergni, F.; Camilli, M.; Sanna, T.; Pedicino, D.; Buffon, A.; D'Amario, D.; Giraldi, L.; Trani, C.; Liuzzo, G.; Rebuzzi, A. G.; Niccoli, G.; Crea, F.. - In: HEART. - ISSN 1355-6037. - 106:12(2019), pp. 923-930. [10.1136/heartjnl-2019-315909]
|Appare nelle tipologie:||1.1 Articolo su rivista|