Evaluation of Recurrent Takotsubo Syndrome.

Background: After an initial Takotsubo syndrome (TTS) event, there is growing recognition of adverse long-term outcomes, including recurrent TTS events. Recurrent events have been incompletely evaluated.

Objectives: The objective of this study was to characterize recurrent TTS events and evaluate variables associated with recurrence.

Methods: We studied 88 consecutive participants in the Cedars-Sinai Smidt Heart Institute Takotsubo Registry, an observational registry collecting retrospective and prospective data in TTS survivors. Detailed medical records are adjudicated. Standardized psychosocial questionnaires are administered remotely.

Results: Of 88 participants with adjudicated TTS, 15 (17%) experienced at least 1 recurrent TTS event (median 3.30 years to first recurrent event, range 0.13-18.56 years). In 9 of these 15 participants, there were different patterns of wall motion abnormalities observed between events. The recurrence-free survival significantly differed based on the pattern of wall motion abnormalities at the index TTS event. Clinical, electrocardiographic, echocardiographic, and invasive data obtained at the index TTS event were similar between participants who went on to have at least 1 recurrent event and those who did not.

Conclusions: Recurrent TTS episodes occurred in a significant proportion of cases, a median of 3.30 years after the index event. The recurrent episodes often had distinct triggers and different wall motion abnormalities compared to the index event. The wall motion pattern at the index event impacted the recurrence-free survival, though confirmatory studies are needed. TTS participants had a high rate of adverse psychosocial stress characteristics based on detailed questionnaires. (The Cedars-Sinai Smidt Heart Institute Takotsubo Registry & Proteomic Study; NCT03910569).