Pectus carinatum is characterized by
a. a depression in the lower body of the sternum.
b. excessive concavity of the thoracic vertebrae.
c. a marked protrusion of the sternum.
d. ribs forced upward and inward.
C
Pectus carinatum, or pigeon chest, is a marked protrusion of the sternum. This increases the AP (anteroposterior) diameter of the thorax. Pectus excavatum, or funnel chest, is a depression in the body of the sternum. The AP diameter of the chest decreases and can compress the heart and cause myocardial disturbances. Kyphosis, or humpback, is an excessive concavity of the thoracic vertebrae. In a barrel thorax, the AP diameter is equal to the transverse diameter and the ribs are forced upward and outward.
You might also like to view...
Sometimes, when a premature atrial complex (PAC) occurs very prematurely and close to the T wave of the preceding beat, only a P wave may be seen with no QRS after it (appearing as a pause). This type of PAC is termed a _____ PAC
Fill in the blanks with correct word
85% converted to a proper fraction and reduced to its lowest terms is
A. 
.
B. 
.
C. 
.
D. 
.
When administering PO medications, the nurse must plan how and when to administer the drug. What is not a factor when planning to administer a PO medication?
1. How long should the infusion last? 2. Can the medication be crushed? 3. Should the medication be given on an empty stomach? 4. Can the medication be split?
The most common type of hearing loss, which results from interference of transmission of sound to the middle ear, is called:
a. Conductive. c. Mixed conductive-sensorineural. b. Sensorineural. d. Central auditory imperceptive.