Which of the following should be considered when positioning a patient? 1. Patency of the airway is the prime concern when positioning a patient. 2. Pressure injuries are most common after surgical procedures lasting one hour or longer. 3. An anesthetized patient with muscle paralysis is at increased risk for muscle strain. 4. The most common sites of peripheral nerve injury are the divisions of the brachial plexus and the ulnar, radial, perineal, and facial nerves. 1, 2, and 3 only 1, 2, and 4 only 1, 3, and 4 only 2, 3, and 4 only {Ans: 1, 2, and 4 only}Dehiscence is: the separation of the layers of a surgical wound the act of removing diseased tissue the removal of foreign material the presence of bacteria in the blood {Ans: the separation of the layers of a surgical wound}True or False: All of the following are correct tip for holding retractors 1. When holding a retractors only use the amount of force necessary for visualization 2. Focus on holding the retractor even if you are holding it for hours- lack of focus will cause the retractor to move and block visualization. 3. When holding a army-navy type