The Lewis lead configuration can help to detect atrial activity and its relationship to ventricular activity. Named after Welsh cardiologist Sir Thomas Lewis (1881-1945) who first described in 1913.
ECG lead positioning. V4R, right sided ECG, Lewis lead, 3-lead, 5-lead, 12-lead ECG and electrode placement on chest and limbs
Misplacement of V1 and V2: Don’t let this mistake mess up your ECG interpretation! Manifesting with P wave, Q wave, T wave changes and Brugada II pattern