The nurse monitors the patient with erysipelas for which symptoms that may indicate complications related to the condition? Select all that apply.

The 20-year-old healthy soccer player is brought to the emergency department after collapsing at the end of a summer soccer game. The patient is lethargic and confused about the event. Upon assessment, the nurse notes flushed, dry skin that is warm to the touch. The oral mucosa is dry, as well. Vitals are as follows: temperature 40.7°C, heart rate 122 bpm, respiratory rate 20, and blood pressure 116/64 mmHg. Which lab studies does the nurse obtain? Select all that apply.  

The patient is scheduled for bariatric surgery in one month. During the preoperative physical, the nurse notes the patient takes St. John's wort. The nurse instructs the patient to stop taking St. John's wort 5 days prior to the surgery for which reason?