Since SIMV breaths are delivered at a frequency independent of the patient's spontaneous frequency, breath stacking may occur.

Before the 1970s, how did a physician's practice grow?

What will be an ideal response?

A patient is suffering from an asthma attack and the respiratory therapist initiates oxygen therapy. At what level should the therapist try to maintain the PaCO2?

A) above 55 mmHg B) below 55 mmHg C) below 40 mmHg D) at exactly 55 mmHg