A 35-year-old is brought to the emergency department  becaus…

A 35-year-old is brought to the emergency department  because of worsening shortness of breath and cough. The client has a history of asthma, which has been further exacerbated since he started to have a runny nose, cough, and fever 2 days ago. The physical examination reveals a sick-looking client whose vitals are temperature 100.2 °F (37.9 °C), blood pressure 135/80 mm Hg, heart rate 130 bpm, and respiratory rate 30 breaths/min. He has difficulty talking. His chest exam reveals intercostal retraction and generalized wheezing. What is the clinical sign that indicates the most significant respiratory emergency?

A patient on 4 L/min of oxygen by nasal cannula has an arter…

A patient on 4 L/min of oxygen by nasal cannula has an arterial blood gas performed. The patient has normal work of breathing, with a respiratory rate of 23 breaths/min. The arterial blood gas indicates a pH of 7.40, PaO2 = 92 mm Hg, and PaCO2 = 42 mm Hg. Which of the following is most appropriate?