The temperature to which a mixture of fuel gas and air must be raised to initiate combustion without any external heat source is called:

A pertinent negative would be illustrated by:

A) "nausea without vomiting." B) "hypertension and taking medication." C) "dizziness for three days without notifying the doctor." D) "short of breath with history of lung problems."

Which of the following situations is most likely to activate the occlusion alarm on the Newport Medical Instruments HT50 ventilator?

a. Increased airway resistance c. Water in the proxi-mal sensor line b. Secretions in the patient circuit d. Patient biting the endotracheal tube