During anaerobic metabolism, the precapillary sphincters __________ in response to __________.
A) relax, lactic acid buildup
B) constrict, capillary engorgement
C) relax, systemic vasoconstriction
D) constrict, decreased carbon dioxide
Answer: A) relax, lactic acid buildup
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Which of the following is TRUE regarding intraosseous infusion?
a. This procedure is performed only on pediatric patients. b. You may attempt intraosseous placement even if a peripheral IV line is in place. c. Periodic flushing of the needle is necessary to keep it from becoming occluded. d. Easy access of bone marrow and blood from the site into a syringe indicates incorrect placement of the needle.
Smooth gray colonies were isolated from an infected cat scratch on BAP and CHOC. The organism showed no growth on MAC. Gram stain revealed small gram-negative coccobacilli. You would expect this organism to be
A) oxidase positive and catalase negative. B) oxidase and catalase negative. C) oxidase negative and catalase positive. D) oxidase and catalase positive.
Lead glass in the control booth must contain:
1/16" lead equivalent 1/32" lead equivalent 1/2" lead equivalent 1.5 mm lead equivalent
Which of the following is not a special consideration when administering anesthetic drugs to obese children?
A) Excess adipose tissue in the oral cavity impedes visibility B) Excess adipose tissue in the oral cavity makes it difficult to identify intraoral anatomical landmarks C) Obesity alters the distribution and elimination of anesthetic drugs D) Obesity may require administration of greater volumes of anesthetic for effectiveness