Despite playing a Syrian doctor, Hamza Haq is of Pakistani descent. He was born in Saudi Arabia before moving to Canada.
The doctor totally messes up the pre-cordial thump. He raises his fist way up and slams it down. Wrong. The pre-cordial thump has the fist raised only 8"-12" and then drops quickly but gently. It is just enough to "startle" a heart in v-fib into momentarily stopping and then restarting in a synchronized manner.