A cystourethroscopy with ureteroscopy was performed to remove a calculus lodged in the left ureter.

What is the role of postextubation NPPV for patients with COPD exacerbations who are intubated because they were not initially candidates for NPPV? I. earlier extubation to NPPV II. reduced incidence of nosocomial infection III. decreased length of stay in hospital IV. shortened duration of positive-pressure mechanical ventilation

A. I. only B. II, III only C. I, III, IV only D. I, II, III, IV only

When determining productivity of an EMS system, the EMS provider:

A) calculates the ratio of EMS calls to the number of operating ambulances. B) determines the number of paramedics on duty versus the number of EMS calls. C) calculates the number of critical patients per month and how many survived. D) measures how many patient transports per hour each ambulance accomplishes.