Bridgett Ronan, MD
Lewis J. Wesselius, MD
Department of Pulmonary Medicine
Mayo Clinic Arizona
History of Present Illness
A 53 year old man presented to the emergency department with a 2 week history of progressive dyspnea. He thought it was anxiety due to quitting drinking just before the onset of his symptoms. He also had fatigue and malaise.
PMH, SH, FH
He had no significant past medical history or family history. He did not smoke but drank 2-6 beers/day until 2 weeks prior to presentation.
BP 110/60 mm Hg, P 110 beats/min, R 32 breaths/min, T 37.6° C, SpO2 81%
He is pale and appears mildly dyspneic otherwise his physical exam is unremarkable.
His chest x-ray is shown in figure 1.
Figure 1. Initial PA (Panel A) and lateral (Panel B) chest x-ray.
Which of the following laboratory tests is/are not indicated?
- Arterial blood gases
- Complete blood count
- Spiral thoracic CT angiography
- All of the above