The patient with arteriovenous malformation who takes a monoamine oxidase inhibitor for depression develops an upper respiratory infection. The nurse requests a prescription for which medication?

The patient with a severe peanut allergy was inadvertently exposed to peanuts at work. Dyspnea persists despite the patient using the epinephrine autoinjector and emergency medical services was contacted. Which concentration of epinephrine does the first responder prepare for intramuscular injection?

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?