RT Journal Article SR Electronic T1 Asymptomatic takotsubo syndrome occurring during Holter monitoring JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e244979 DO 10.1136/bcr-2021-244979 VO 14 IS 11 A1 Yambe, Minoru A1 Nakano, Takao A1 Kumagai, Koji A1 Komaru, Tatsuya YR 2021 UL http://casereports.bmj.com/content/14/11/e244979.abstract AB Asymptomatic takotsubo syndrome was observed during periodic Holter monitoring in a man in his 60s undergoing maintenance dialysis. No emotional or physical stress was noticed. The electrocardiographic changes at onset were determined, and repeated ST elevation and progressive formation of giant negative T waves were recorded.