A 68 y/o male who has smoked 3 packs of cigarettes a day for 30 years presents with a history of shortness of breath, coughing and wheezing with difficulty blowing air out. He reports that he used to be able to walk up the stairs of his home without difficulty and now becomes winded halfway up. He also reports tightness in his chest when he exerts himself. Use the resources and text from this LP and an internet/library search to find current and credible information and write a 1-2 page essay preferably in APA format. Describe the likely diagnosis; explain diagnostic tests that may be used and what information is obtained from them;and describe possible treatment options.