
ECG Lead positioning
ECG lead positioning. V4R, right sided ECG, Lewis lead, 3-lead, 5-lead, 12-lead ECG and electrode placement on chest and limbs

ECG lead positioning. V4R, right sided ECG, Lewis lead, 3-lead, 5-lead, 12-lead ECG and electrode placement on chest and limbs

Middle aged patient presenting with central chest pain. Posterior leads V7-9. What does the ECG show?