This results in an inverted P wave in lead II (normally upright in sinus rhythm) and an upright P wave in aVR (normally inverted in sinus rhythm). Depending on the exact location of the pacemaker ...
The most common ECG finding in the setting of a pulmonary embolism is sinus tachycardia ... A large S wave in lead I, a Q wave in lead III and an inverted T wave in lead III together indicate ...