An EMT is confronted by an armed gunman who is threatening to kill the EMT and his partner. An elevation in the EMT's heart rate and blood pressure occurs in which stage of the body's response to stress?

A pressure-volume ventilator graphic fails to return to the point of origin. Which of the following could be the cause?

A. inadequate PEEP B. leak in the ventilator circuit C. pulmonary distension D. excessive cuff pressure

The medical assistant's duties with regard to laboratory testing include:

A) specimen collection. B) proper patient preparation. C) sending specimens to outside labs for testing. D) All of the above