13-Lead ECG
Ah yes, the good ole baker's dozen-lead ECG. Sometimes when 12 leads aren't enough[1] but you don't quite need an echo, then just add lucky lead number 13. Where do you put that one: V7?
See More
1-Lead ECG 2-Lead ECG 3-Lead ECG 4-Lead ECG 5-Lead ECG 230-Lead ECG
References