Takotsubo Syndrome in Older Men　- Clinical Characteristics Differ by Sex and Age

Takotsubo syndrome (TTS) in male patients is under-studied, particularly in the older population. From 226 patients with TTS, 44 older male patients (prevalence rate: 19.5%, age: median 77 years) were compared with 182 older female patients (prevalence rate: 80.5%, age: median 80 years). Emotional triggers of TTS were less frequent (2% vs. 19%; P=0.007), whereas physical triggers were more frequent (75% vs. 58%; P=0.040) in older men than in women. Among physical triggers, serious respiratory infection was more common in older men than in women. As initial clues to the diagnosis, ECG T-wave inversion was more frequent (48% vs. 29%; P=0.018) and chest pain and/or dyspnea were less common (23% vs. 38%; P=0.050) in older men than in women. In total, 14 patients (6%) had cardiogenic shock and 41 (18%) had severe heart failure as complications, although there were no significant differences in the frequency of these complications between older men and women. Although cardiac death occurred in 3 female patients (1%) and noncardiac death in 3 male and 5 female patients (4%), there were no significant differences in death rate between older men and women. Emotional triggers of TTS were extremely infrequent whereas physical triggers were common in older men. Although severe heart failure was common, there were no significant differences in the frequency of complications and in-hospital deaths between older men and women.