Abstract 4117690: Cardiac Rupture as a Life-Threatening Outcome of Takotsubo Syndrome: A Systematic Review.

Background: Takotsubo syndrome is a reversible cause of heart failure; however, a low percentage of patients can develop serious complications, including cardiac rupture. Aims: Analyze case reports or case series of cardiac rupture in patients with Takotsubo syndrome, detailing patient characteristics to uncover risk factors and prognosis for this severe complication. Methods: We conducted a systematic search of MEDLINE and Embase databases to identify case reports or case series of patients with Takotsubo syndrome complicated by cardiac rupture, from inception to October 2023. Results: We identified 39 reported cases, including 44 subjects (40 females; 4 males) with a median age of 75 (IQR 71-82) years, of White/Caucasian (61%) or East Asian/Japanese (39%) ethnicity. An emotional trigger was present in 15 (34%) subjects and common admission symptoms were chest pain (35 [80%]) and dyspnea (14 [32%]). ST-segment elevation was present in 39 (93%) of 42 cases, with the anterior myocardial segments (37 [88%]) being the most compromised, followed by lateral (26 [62%]) and inferior (14 [33%]) segments. The mean left ventricular ejection fraction was 40±13% and an apical ballooning pattern was observed in all (100%) ventriculographies. The median time to cardiac rupture was 48 (5-120) hours since admission, with the left ventricular free wall (25 [57%]) being the most frequent site of perforation. Surgery treatment was attempted in 16 (36%) cases, and 28 (64%) patients did not survive (Figure). Conclusions: Cardiac rupture as a complication of Takotsubo syndrome is a rare clinical condition associated with high mortality. Elderly females, especially from White/Caucasian or East Asian/Japanese descent, presenting with ST-segment elevation in the anterior or lateral leads, and an apical ballooning pattern, are disproportionally affected. Additional studies with prospective collection of patient-level data are needed to better identify those at increased risk for cardiac rupture associated with Takotsubo syndrome and to address ways to improve mortality rates in this population.