What do you do when you ask a question and get... deathly silence? You could, of course, asnwer the question yourself, and sometimes it may be the quickest way to keep up your momentum. But answer too many questinos yourself and you're teaching the class that if they sit silent you'll do all the work. A technique I have used is to rephrase the question to make it easier to answer. Simpli-fying is one way (instead of asking for all four vital signs, ask for just one). Or association ("we did this on Monday just after our review"). Or connecting to TV shows they have seen ("what do they do first when an emergency is brought into the ER?"). Or focusing on a clue (" what word do you see inside "electrocardiography").