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

Table 1 Electrocardiographic findings organized by frequency in presentation

Electrocardiogram description	Cases (n)	Incidence (%)
ST segment changes	150	60.00
T wave changes	99	39.60
Prolonged QT	26	10.40
Normal	16	6.40
Q wave	11	4.40
AV block	7	2.80
LBBB	6	2.40
RBBB	6	2.40
AF	5	2.00
VT	3	1.20
VF	3	1.20
Ventricular bigeminy	2	0.80
Other1	1	0.40

¹Other: U wave, Osborn wave, Torsade de Pointes, ventricular atrial retrograde conduction, ventricular pace rhythm, premature ventricular contractions, ventricular ectopic beats, multifocal ventricular contractions, ventricular asystole and escape junctional rhythm. AV block: First, second and third degree atria-ventricular block; LBBB: Left bundle branch block; RBBB: Right bundle branch block; AF: Atrial fibrillation; VT: Ventricular tachycardia; VF: Ventricular fibrillation.