A 56-year-old man comes into your office as a new patient. Seven years ago, at a work-related health screening, he was diagnosed with hypertension with a blood pressure of 140/90. He saw a physician who prescribed a “medication” and encouraged him to lose some weight, diet, and exercise. Since that time, the patient has not sought medical attention. What is the probable diagnosis? What are other possible diagnoses? At this stage of the case study, what diagnostic studies and basic treatments are most appropriate to order and why?