Yоu аre аssisting in the PFT lаb and are perfоrming a spirоmetry test on a patient. After the patient performs the test, you notice their flow-volume loop looks like the image below. The solid black line shows the patient's effort while the blue dash line shows a "normal" flow-volume loop. fixed obstruction pressure volume loop (1).png Based on the image and shape of the flow-volume loop, what do you suspect the patient having?