In acute pulmonary embolism, the most frequent ECG finding is
S1Q3T3 pattern
P. pulmonale
Sinus tachycardia
Right axis detion
The most frequently cited abnormality in pulmonary embolism is sinus tachycardia.Apa from that,it also shows S1Q3T3 sign-an S wave in lead I,a Q wave in lead III,and an inveed T wave in lead III.This finding is relatively specific. S1Q3T3 pattern in ECG of pulmonary embolism is also termed as Mc Ginn White Sign. Reference:Harrison's medicine-18th edition,page no:2172.
Respiratory system