Research Article
Diagnostic Yield of Echocardiography in Syncope Patients with Normal ECG
Table 1
Definitions of abnormal ECG and echo.
| Abnormal ECG | Abnormal echo |
| (i) Arrhythmias (ii) Q waves (iii) Ischemic changes (iv) 2nd- and 3rd-degree AV block (v) Paced rhythm (vi) QTc > 500 ms (vii) Left bundle branch block (viii) Bifascicular block (ix) Brugada pattern (x) Abnormal axis | (i) LVEF < 45% (ii) Moderate-severe valvular abnormalities (stenosis or regurgitation) (iii) Severe ventricular wall hypertrophy (iv) Any septal wall motion abnormality (v) Hypertrophic cardiomyopathy with outflow tract obstruction (vi) Severe pulmonary hypertension (vii) Hemodynamically significant pericardial effusions |
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AV, atrioventricular. LVEF, left ventricular ejection fraction.
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