Hearing is expressed in decibels (dB), or units of loudness. Which is the softest sound a normal ear can hear?
a. 0 dB
b. 10 dB
c. 40 to 50 dB
d. 100 dB
ANS: A
By definition, 0 dB is the softest sound the normal ear can hear. Ten dB is the sound of the heartbeat or the rustling of leaves. 40 to 50 dB is in the range of normal conversation. The noise of a train is approximately 100 dB.
You might also like to view...
7.5% of 26l = _____
a. l95.75 b. l.9575 c. l9.575 d. 20
Which technique should the nurse use when infusing fresh frozen plasma?
1. Administer slowly. 2. Give through a filter. 3. Agitate the bag periodically. 4. Give IV push.
When assessing an older adult client with osteoporotic thinning and vertebral collapse, which of the following would the nurse expect to find?
A) Lordosis B) Increased arm swing C) Narrowed gait D) Kyphosis
With regard to medications, herbs, shots, and other substances normally encountered by pregnant women, the maternity nurse should be aware that:
a. Both prescription and over-the-counter (OTC) drugs that otherwise are harmless can be made hazardous by metabolic deficiencies of the fetus. b. The greatest danger of drug-caused developmental deficits in the fetus is seen in the final trimester. c. Killed-virus vaccines (e.g., tetanus) should not be given during pregnancy, but live-virus vaccines (e.g., measles) are permissible. d. No convincing evidence exists that secondhand smoke is potentially dangerous to the fetus.