What is reverse differential cyanosis?
Cyanosis of preductal (fingers). Seen in TGA with shunting through PDA
What is differential cyanosis?
Cyanosis of LE/toes, but not fingers. Seen in aortic arch obstruction and PPHN
Quick and dirty for calculating rate on an EKG;
Rate = 300/#big boxes
Typical right and left leads on EKG:
Right= V1, V2
Left=V5,V6