Review Question - QID 106822

A 57-year-old female presents to the emergency department with complaints of nausea, muscle aches, and confusion that presented and worsened over the past several days. On further probing, she also reports a nagging cough with shortness of breath and a 10-lb. weight loss over the last 3 months. She does not have a primary care doctor and denies having regular check ups. She reports smoking 1 pack of cigarettes per day and denies any alcohol consumption. Her medical history is significant for hypertension, a 30 pack year smoking history, and anxiety. Vital signs are as follows: T 37.2 C, HR 86, BP 137/86, RR 14, and SpO2 96%. Physical examination shows normal skin turgor, moist mucus membranes, and no peripheral edema. A CT scan is performed to investigate the patient's cough in Figure A. Lab work is performed in the ED and the findings are below.
Na: 128 mEq/L ...