Question: Liezl presents to the emergency room (ER) complaining of breathlessness. The ER doctor runs a series of test (results are available below). Based on this information, what is your diagnosis for LiezlLiezl suffers from cystic fibrosis, which obstructs her airways and prevents oxygen from reaching her alveoli. Liezl is iron-deficient, which prevents the synthesis of hemoglobin and decreases oxygen delivery to her muscles. Liezl lives at high altitude, which lowers her arterial PO2 and increases the affinity of hemoglobin to oxygen. Liezl suffers from pneumothorax in one of her lungs, which only allows her to use one lung for ventilation. Liezl has pulmonary fibrosis, which compromises the diffusion barrier in the alveoli.