Which of the Following Criteria Should Be Met Before Considering

Multiple Choice

Which of the following criteria should be met before considering use of a heat-moisture exchanger (HME) for a patient being placed on ventilatory support?
1) There should be no problem with retained secretions.
2) The patient should not have fever (normothermic) .
3) The patient should be adequately hydrated.
4) The support should be short term (24 to 48 hr) .

A) 1, 2, and 3 only
B) 2 and 4 only
C) 1, 2, 3, and 4
D) 3 and 4 only