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 chest x-ray is clear. The nurse prepares to administer which medication first? 

The nurse is caring for a patient with schizophrenia who has bacterial endocarditis secondary to intravenous drug use. The patient’s antipsychotic medication is changed from risperidone to clozapine. Within days, the patient develops a serious cardiac arrhythmia. The nurse attributes the patient’s arrhythmia to which cause?

A nurse is caring for a patient who is recovering from total hip replacement surgery. The patient has required increasing doses of IV morphine for pain control. The patient is again reporting 10/10 pain despite receiving 10 mg of morphine from the nurse, which is the top of the range ordered by the physician. The nurse monitors which of the following most closely?