PMC9513142_01
(A) The ECG at admission (speed 25 mm/s, 10 mm/mV) with HR 128 beats/min and QTc interval of 502 ms. (B) The chest radiography shows cardiac enlargement and signs of pulmonary congestion. (C) The echocardiography in the long-axis, M mode shows an increased left ventricular end-diastolic diameter (5.0 cm) and reduced EF (43%). (D) Doppler ultrasound shows moderate mitral regurgitation and severe tricuspid regurgitation.
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F1
Electrocardiogram (ECG) showed sinus tachycardia and prolonged corrected QT interval (QTc) of 502 ms (Figure 1A). The chest X-radiography found enlargement of the heart (Figure 1B). Echocardiography found dilated left ventricular diameter of 50 mm, accompanied by moderate mitral regurgitation, severe tricuspid regurgitation and global hypokinesis of left ventricular wall with LVEF of 43% (Table 1; Figures 1C,D).