The patient presents to the clinic complaining of abdominal pain in the left lower quadrant that happens every few days with irregular fecal elimination patterns (constipation alternating with diarrhea). Diverticulosis is suspected. Which test will confirm this diagnosis?

The 56-year-old intubated and sedated patient’s arterial blood gas results are as follows: pH = 7.25, PCO2 = 36, PaO2 = 50, HCO3- = 15, SaO2 = 86%. Other lab values are notable for a hemoglobin of 7.9 mg/dL, albumin of 2.5 g/dL, sodium of 152 mEq/L, potassium of 2.1 mEq/L, chloride of 118 mEq/L. Vital signs are notable for a heart rate of 118 bpm, blood pressure of 86/38 mmHg, temperature of 102°F, and pulse oximetry of 85% on room air. The nurse advocates for which order?

The nurse is performing an electrocardiogram on a patient with rhabdomyolysis. The patient asks the nurse what the rationale is for this test, since he is young and has no cardiac history. Which of the following responses by the nurse is most appropriate?