Dental x-ray machines may have controls for manual adjustment of kVp and mA, or these controls may be preset by the manufacturer
Indicate whether the statement is true or false
True. Some machines have variable controls allowing the radiographer to adjust the kVp and mA of incoming electricity. Other units have controls that have been preset by the manufacturer. In the latter case, the control panel will indicate at what levels these factors have been set.
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Which of the following are true regarding a 3AA "H" size oxygen cylinder? I. The cylinder contains 22 cubic feet when full. II. The cylinder contains 244 cubic feet when full. III. The cylinder may be filled to 2,200 psi. IV. The cylinder may be filled to 3,000 psi
A) I and III B) I and IV C) II and III D) II and IV
Oxygen therapy is indicated in the sub-acute or home setting for adults with:
I. PaO2 < 55 mmHg II. SpO2 < 88% III. hypoxemia in association with cor pulmonale IV. pulmonary hypertension A) I B) I and II C) I, II, and III D) I, II, III, and IV