Hoping for some clarification here:

On page 103 of the 3rd edition it states that TOF has “widely split S2, a single S1 and possible a click.”  On the table on page 105 it states that TOF has a “Single S2 because PV component absent.”

So which is it for TOF: a widely split S2 OR a single S2???

Any other tips for this section???

Thanks so much!

Sheila

S2 is made up of A2/P2.

In Tetralogy of Fallot, there actually is a wide split of S2… BUT, the P2 component is usually so soft that it’s EXTREMELY difficult to hear. Since it’s RARELY audible, you’ll only hear a single S2.

I’ll update the book for the next edition. Thanks for asking.

– AG