Pop Quiz! #1

In a drift away from our previous Question of the Week series, over the next few days or maybe weeks, we'll be throwing out some quick-fire questions in a new series called.... Pop Quiz! (but you already knew that because it was in the title).

As always, work out your answer before reading the one provided, and if you disagree, agree or just want to get involved, leave your thoughts in the comments below.

 

1. By what two mechanisms can paroxysmal supraventricular tachycardia cause syncope?

 

 

Did you do the last QotW?

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