Initial clinical presentation of Takotsubo cardiomyopathy with-a focus on electrocardiographic changes: A literature review of cases

Table 2 ST segment, T wave change categories organized by incidence

	Cases (n)	Categoryincidence1 (%)	Global inci-dence2 (%)
ST segment changes
ST segment elevation	135	90.00	54.00
ST segment depression	113 (214)	7.30	4.40
ST segment non-specific changes	3	2.00	1.20
ST segment flattened	1	0.70	0.40
T wave changes
T wave inversion	91	91.90	36.40
Hyperacute T wave	4	4.00	1.60
Flattened T wave	2	2.00	0.80
Non-specific T wave changes	2	2.00	0.80

¹Percentage calculated based on total ST segment changes cases (150); percentage calculated based on total cases with T wave changes (99);

²Percentage calculated based on total cases in the study (250); percentage calculated based on total cases in the study (250);

³Total number of cases presenting with ST segment depression alone (without concomitant ST segment elevation);

⁴Total number of cases presenting with ST segment depression.