The patient first experienced chest pain 12 hours ago and was diagnosed with a myocardial infarction. The patient’s myoglobin level is noted to be roughly 5 times the normal level. The nurse makes which prediction about the patient’s myoglobin level in 12 hours from the current level?

The patient is brought to the emergency department complaining of sudden onset crushing substernal chest pain. He is pale, diaphoretic, and can only speak in short sentences. His vital signs are notable for a heart rate of 118 bpm, respiratory rate of 22, and a blood pressure of 94/52 mmHg. Upon assessment, peripheral pulses are palpable but weak; lungs are clear; mild jugular venous distention is noted. The emergency medical services administered aspirin on arrival to the scene. The nurse anticipates performing which intervention first? 

The 33-year-old patient presents to the clinic with signs and symptoms of gastroesophageal reflux disease. The nurse prepares the patient for which test?