(non-infarction Q waves)," Cardiovascular Clinics, vol.
Table: Electrocardiographic abnormalities in pulmonary embolism Rhythm Sinus tachycardia Atrial premature complexes Atrial flutter Atrial fibrillation Right ventricular premature complexes Ventricular fibrillation Sinus bradycardia or asystole (rarely) P waves Rightward axis ([greater than or equal to] 75[degrees]) Tall (>2.5 mm) in leads II, III, or aVF QRS complex Right axis deviation or rightward axis shift Clockwise rotation Right ventricular conduction delay Right ventricular hypertrophy Pseudoinfarction
Inferior Anterior Both Left axis deviation (rarely) ST segment Elevation inferiorly and/or anteriorly Depression T wave Inversion inferiorly Inversion anteriorly QT prolongation Modified from references 2 and 7
S waves in lead I and Q waves in lead III with T-wave inversion in III); 5) shift in the transition zone (R5S) to V5 or further leftward; 6) complete or incomplete RBBB; 7) peripheral low voltage (in the limb leads); 8) pseudoinfarction
pattern (prominent Q waves) in leads III and aVF; 9) ST segment elevation 0.1 mV over the right (V2-V3) or the left (V4-V6) precordial leads; 10) ST segment depression [greater than or equal to] 0.05 mV over the right or the left precordial leads; and 11) T-wave inversion over the right or the left precordial leads.
Low-limb lead voltage, a pseudoinfarction
pattern (Q waves) in leads III and AVF, and ST-segment elevation or depression in leads V4 to V6, elevation of troponin were the ECG findings for poor prognosis.