PMC7301683_01
Electrocardiogram (ECG) at presentation (17:55 pm). Normal sinus rhythm. Normal ECG. Vent. Rate 80 bpm, PR interval 134 ms, QRS duration 88 ms, QT/QTc 404/465 ms, P-R-T axes 74 88 45.
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Electrocardiogram (ECG) (Figure 1) showed normal sinus rhythm, and chest X-ray was unremarkable for an acute cardiopulmonary process.
ECG after IV administration of epinephrine (18:26 pm). Normal sinus rhythm. Prolonged QT. Abnormal ECG. Vent. Rate 91 bpm, PR interval 122 ms, QRS duration 98 ms, QT/QTc 392/482 ms, P-R-T axes 83 87 50.
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ST-T wave changes (Figure 2). She received one dose of aspirin (324 mg).
ECG after IV administration of epinephrine (08:23 am). Normal sinus rhythm with sinus arrhythmias. Rightward axis. Borderline ECG. Vent. Rate 86 bpm, PR interval 134 ms, QRS duration 88 ms, QT/QTc 362/433 ms, P-R-T axes 75 91 72.
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A third ECG was performed, which demonstrated normal sinus rhythm with sinus arrhythmia, rightward axis, and no ST-T wave changes (Figure 3).
Transthoracic echocardiogram (TTE) video clip demonstrating left ventricle lateral wall abnormality.
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Her cardiac echocardiogram showed a normal left ventricular size measuring 4.9 cm, low-normal left ventricular ejection fraction (50%), elevated right atrial pressure (dilated inferior vena cava, with respiratory size variation less than 50%), and left ventricle lateral wall abnormality (Figure 4;. https://www.youtube.com/watch?v=soLXgVLXppU).