<prompt> Back examination of polytrauma patient is done by which method:-LogrollBarrel rollChin liftprimary survey  <response>: Back examination of polytrauma patient is known as Logroll Back: Logroll - 5 people are required for examination of back, 3 for body, one for head one for examining back; Per Rectum is done at this timeQ For log roll, ideal number of people required: 5Q Minimum number of people required for log roll: 4Q 