PMC9902953_01
Ventricular arrhythmias. The height and weight of the patient were 170 cm and 55 kg, respectively. (A) Electrocardiography revealed that synchronized cardioversion restored ventricular tachycardia to sinus arrhythmia (arrow). (B) A 12-lead standard electrocardiogram revealed relatively low QRS-complex voltage at all leads, as well as a single PVC with RBBB morphology and a superior axis, indicating that the PVC originated in the left ventricle. (C) Holter demonstrated various morphological singles and triplets of PVC (arrows) that may have originated from different sites.
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F1
The 213 bpm electrocardiographically sustained ventricular tachycardia was quickly terminated by synchronized cardioversion (Figure 1A). The 12-lead standard electrocardiogram revealed a single PVC with right bundle branch block (RBBB) morphology and a superior axis, indicating that the PVC originated in the left ventricle (Figure 1B). Different morphological PVCs have been identified, which may have originated in different regions (Figure 1C).
PMC9902953_02
Transthoracic echocardiography and high-frequency linear ultrasound showed multiple biventricular aneurysms. (A). Transthoracic echocardiography revealed an anterior right ventricular free wall aneurysm (asterisk) in the parasternal long axis view (see Supplementary Video 1), which had previously been identified using high-frequency linear ultrasound (B, C). Transthoracic echocardiography revealed a right ventricular apical free wall aneurysm (asterisk) in the apical four-chamber view that was demonstrated by high-frequency linear ultrasound (D), (see Supplementary Video 2), with a yellow arrow pointing to the apical epicardial coronary artery and a red arrow pointing to the parietal pericardium (E). Transthoracic echocardiography revealed a left ventricular apical aneurysm (asterisk) in the apical four-chamber view, and high-frequency linear ultrasound revealed both ventricular apical aneurysms (F), (asterisk) with an apical left ventricular thickness of 2 mm. High-frequency ultrasound can also reveal ventricular aneurysmal wall thickness, apical coronary artery, epicardial fat, and parietal pericardial thickness (B, D, F). AO, aorta; LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.
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F2
High-frequency linear ultrasound with a higher resolution could better show and measure ventricular aneurysms near transducer regions (Figure 2).