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Citation
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Itoh T, Toda N, Yoshizawa M, Osaki T, Maegawa Y, Yoshizawa R, Ishikawa Y, Nishiyama O, Nakajima S, Nakamura M, Morino Y. Circ. J. 2021; ePub(ePub): ePub. |
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Abstract
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BACKGROUND: This study aimed to clarify the incidence of takotsubo syndrome (TTS) after the Great East Japan earthquake (GEJ-E) between inland and coastal areas.
METHODS and Results:Consecutive hospitalized patients with TTS were registered between 2009 and 2016 in Iwate Prefecture. Patients were divided into 2 groups, by whether they lived inland or in the coastal area (both max. seismic intensity, 6(-)). The incidence of TTS was calculated using the standardized incidence ratio (SIR) before and after the earthquake. The long-term prognosis of the 2 groups was compared by Kaplan-Meier analysis. A total of 112 patients with TTS were registered from the acute coronary syndrome records of each hospital (n=4,163); 9 patients with TTS were registered within 2 months of the earthquake. A significant monthly variation was observed in March and April 2011 compared with the other months (P=0.029). At 2 years after the earthquake, the SIR was significantly increased in the coastal area (P<0.01), but decreased after ≥3 years. There were no significant differences in the long-term prognosis between the 2 groups (P=0.20).
CONCLUSIONS: The incidence of TTS was increased in the acute phase after the GEJ-E, particularly in the coastal area. The magnitude of the tsunami damage is presumed to be a factor in the increased incidence of TTS, even though the seismic intensity in both areas was comparable.
Language: en |