An anteroposterior x-ray view of the neck is performed on a five-month-old. The respiratory therapist notices an area of "hourglass" shaped swelling in the subglottic region. What additional procedure should be performed to provide a differential diagnosis of croup in this child?

________-tipped swabs are used to clean recessed areas, to apply medications and lubricant, and to obtain specimens from the throat and other orifices

a. Cotton b. Polyester c. Nylon d. Rayon

Which of the following statements regarding polycythemia is most accurate?

A) It decreases the patient's risk of infection. B) It decreases the ability of blood to clot. C) It increases the patient's risk of infection. D) It increases the patient's risk of thrombosis and congestive heart failure.