[Seasonal variation in the incidence of acute aortic dissection in Yokohama].
In order to determine any possible influence of climatic variables on the incidence of acute aortic dissection (AAD), we reviewed all patients with a diagnosis of AAD treated at Yokohama City University Urafune Hospital between January 1994 and December 1997 retrospectively. One hundred and eight patients with AAD were admitted into the hospital during the period. Forty-two patients (39%) developed AAD during the winter, when the lowest temperature was below 6 degrees C. Thirty-one patients (29%) developed AAD in May or October, when the lowest temperature was almost 15 degrees C. We suspect that the incidence of AAD was influenced not only by the atmospheric temperature but also by other factors, for example, the change of the atmospheric pressure.
Ohara
T
T
Department of Anaesthesia, Yokohama City University, Urafune Hospital.
Fujimoto
K
K
Okutu
Y
Y
D000208:Acute Disease; D000784:Aortic Dissection / Q000453:epidemiology*; D001014:Aortic Aneurysm / Q000453:epidemiology*; D001274:Atmospheric Pressure; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D012621:Seasons