How do water fluoridation systems prevent excess water fluoridation?
A) A limited amount of fluoride is maintained in day tanks.
B) Proper controls are used to feed fluoride from the hoppers to distilling tanks.
C) Metering pumps
D) All of the above
D
Explanation: D) All of the answers are correct. The CDC maintains a national program for proficiency testing, which compares the water plants' results to reference standards with known fluoride concentrations.
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A 71-year-old female patient is lying in bed and complaining of respiratory distress. She exhibits moderate dyspnea, crackles in both lungs, and edema to the abdomen and lower extremities. Supplemental oxygen is being provided to the patient by Emergency Medical Responders. Her vital signs are: pulse 132, respirations 18, blood pressure 138/86, and SpO2 at 95%. Which one of the following would be
the most benefit to the patient? A) Administer four baby aspirin. B) Elevate both legs to decrease swelling. C) Obtain a medical history. D) Position the patient upright.
The breathing center is located in the?
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