Answer to Question 1
ANS: A
The structures visible on a chest radiograph are seen only when tissue of one density is next to tissue of another density. For example, the heart is visible as a soft tissue density in the middle of the chest because the lungs, which are primarily air density, normally surround it. If the chest on either side of the heart was filled with water (pulmonary consolidation or pleural effusion), the normal heart shadow would not be visible on the radiograph.
Answer to Question 2
ANS: C
The respiratory therapist needs to be familiar with the common clinical indications for obtaining a chest radiograph (Table 21-1).
When using an interpreter, the nurse should pose questions directly to the patient, not the interpre
A nurse communicates with her non–English-speaking patient through an interpreter
Patient teaching: mouth and pharyngeal assessment
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
Heart covering and layer of the heart.
Mechansim of actions of drugs used to treat heart failure