If a procedure was done but laterality is not documented by the physician:

You have a young male patient who tells you he has Duchenne muscular dystrophy. All of the following are common with this disease EXCEPT:

A) The patient will be wheelchair bound by age 12. B) Weakened respiratory muscles can lead to pneumonia. C) It occurs more commonly in females than males. D) Patients usually die from respiratory failure in the early 20s.

Based on the outcomes of the study performed by Ranieri, what should the therapist expect when mechanical dead space is added to the breathing circuit of a patient receiving PAV?

A. decreased VT and increased respiratory rate B. decreased respiratory rate and increased PaCO2 C. no change in either the respiratory rate or VT D. increased likelihood of apneas and periodic breathing