How many times can sterile needles be used for routine venipuncture?

Which type of respirator system has a continuous supply of air form outside the hazard zone?

a. powered air-purifying respirator b. closed circuit breathing apparatus c. open circuit breathing apparatus d. supplied air respirator

You have been dispatched for a patient whose arm was caught in a grinding machine. Assessment reveals a deformed arm covered with a bloody towel. The patient is alert and anxious, and he has a patent airway. His breathing is adequate. Radial pulse is fast but strong. Which one of the following should you do next?

A) Perform a secondary assessment focusing on his arm. B) Start positive pressure ventilation. C) Begin IV therapy. D) Insert an oropharyngeal airway and administer oxygen.