Generally speaking a ____________loss in bone substance must take place before it is detected radiographically.
a. 5–10%
b. 20–30%
c. 50%
d. 75%
c. 50%
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Which of the following structures closes over the trachea to protect it during swallowing?
A) Epiglottis B) Diaphragm C) Pharynx D) Cricoid cartilage
Which of the following alarm systems is needed for postacute care patients who require only in-termittent pressure-limited noninvasive positive pressure ventilation?
a. High-pressure alarm b. Loss of power alarm c. Low-pressure alarm d. Low-exhaled-volume alarm
Thick blood films for malaria diagnosis are best used for which purpose?
a. Initial screening b. Determination of the percent of parasitemia c. Speciation d. Identification of stages
You are asked to perform an ECG on a 7-year-old child. The child is active and appears to be in good health. When you check the ECG tracing, you notice that it shows a wandering atrial pacemaker rhythm. What should you do?
A. Tell the child's parents that she may need medication. B. Follow your facility's usual procedure for ECG reporting. C. Notify the physician immediately so treatment can be started. D. Note the condition on the tracing and notify your supervisor.