The 20-year-old patient with asthma presents to the emergency department with increased work of breathing and severe wheezing after exposure to household dust and mold. The patient used the albuterol inhaler 6 times in the previous 4 hours with minimal relief. Upon inspection, the nurse notes extensive accessory respiratory muscle use with moderate supraclavicular retractions and nasal flaring. The nurse auscultates expiratory wheezing in all lung fields. The patient is afebrile, normotensive, significantly tachypneic, and mildly tachycardic. The nurse anticipates which findings on a chest x-ray?

The nurse is reviewing the lab results of a patient in the intensive care unit and finds the patient’s lactate to be 5.4 mmol/L. Which additional value is most responsible for this value?

At delivery, the neonate is noted to have diffuse purple lesions over the entire body and is taken to the neonatal intensive care unit for further assessment and management. The nurse notes the toes have turned black; pedal pulses are palpable. The nurse anticipates testing will reveal a deficiency in which substance?