Which of the following abnormal breath sounds indicates obstruction of the upper airway?
A. rales
B. stridor
C. crackles
D. rhonchi
Answer: B. stridor
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A) Crawford W. Long B) William Morton C) Alexander Wood D) Wilhelm Roentgen
How many Root Operation groups are in the Comparison of Medical and Surgical Root Operations appendix of the ICD-10PCS manual?
A) nine B) ten C) eleven D) twelve
A(n) ________ area for preparing dangerous chemicals and drugs, such as cytotoxic agents, should be designated
a. public b. open c. restricted d. unobstructed
Many state dental associations initially were opposed to the dental hygiene profession because ________
A) It was composed of women, who were better suited to work at home B) They thought preventing dental disease might end the need for dentists C) It seemed to focus on cosmetics D) They were hoping the new profession would focus on tooth extractions, allowing them more time to restore teeth E) None of the above