The bar and plate-like tissue of spongy bone are called ________

In which of the following conditions would a ventilation scan be normal but a perfusion scan reveal areas of absent blood flow?

A. lung cancer B. pulmonary embolism C. pneumonia D. emphysema

After applying the AED to an adult patient in cardiac arrest, you analyze her cardiac rhythm and receive a shock advised message. Emergency medical responders, who arrived at the scene before you, tell you that bystander CPR was not in progress upon their arrival. You should:

A) perform CPR for 2 minutes and then defibrillate. B) detach the AED and prepare for immediate transport. C) deliver the shock as indicated followed immediately by CPR. D) notify medical control and request permission to cease resuscitation.