What is the normal state of a nerve agent?

Which of the following describes the midline of the body?

A) An imaginary line dividing the body into equal right and left halves B) An imaginary line dividing the body into a front and a back portion C) An imaginary line dividing the body into a top and bottom portion D) The intersection of two imaginary lines crossing at the umbilicus

Which of the following is the current recommendation for adding humidity while using noninva-sive ventilation (NIV)?

a. It is never recommended. b. It is recommended for short-term applica-tion (<1 day). c. It is recommended for long-term applica-tion (>1 day). d. It is always recommended.