Lewis lead
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.
Tag P Wave
Fontaine lead
Fontaine bipolar precordial leads (F-ECG) are used to increase the sensitivity of epsilon wave detection, characteristic of arrhythmogenic right ventricular dysplasia (ARVD/C)
PR Interval
Assessment / interpretation of the EKG PR interval. ECG PR interval is the time from the onset of the P wave to the start of the QRS complex.
P wave
Overview of normal P wave features, as well as characteristic abnormalities including atrial enlargement and ectopic atrial rhythms
a troublesome tachycardia
The Case. An 11 year old boy is bought to ED by his mother on a busy weekday evening. Mum reports that he has been ‘a little bit off’ over the past 24 hours, in particular he’s not keeping down…