Assignment task:
S.P. is a 68-year-old retired painter who presents for a routine semi-annual follow-up appointment. He is experiencing right leg calf pain. The pain began approximately 2 years ago but has become significantly worse in the past 4 months. The pain is precipitated by exercise and is relieved with rest. Two years ago, S.P. could walk two city blocks before having to stop because of leg pain. Today, he can barely walk across the yard.
S.P. has smoked two to three packs of cigarettes per day (PPD) for the past 45 years. He has a history of coronary artery disease (CAD), hypertension (HTN), peripheral artery disease (PAD), and osteoarthritis. Surgical history includes quadruple coronary artery bypass graft (CABGx4) 3 years ago. He has had no further symptoms of cardiopulmonary disease since that time, even though he has not been compliant with the exercise regimen his cardiologist prescribed, continues to eat anything he wants, and continues to smoke two to three PPD. Other surgical history includes open reduction internal fixation of a right femoral fracture 20 years ago.
S.P.'s primary care provider has seen him and wants you to schedule him for an ankle-brachial index (ABI) test to determine the presence of arterial blood flow obstruction. You confirm the time and date of the procedure and then call S.P. at home. S.P.'s ABI results showed 0.43 right (R) leg and 0.59 left (L) leg. His primary care provider discusses these results with him and decides to wait 2 months to see whether his symptoms improve with medication changes and risk factor modification before deciding about surgical intervention. S.P. receives a prescription for clopidogrel (Plavix) 75 mg daily and is told to discontinue the daily aspirin. In addition, S.P. receives a consultation for physical therapy.
1. What is the ABI and what do these ABI results indicate?
2. What other diagnostic test(s) would be appropriate for S.P.?
3. How will the physical therapy help?
4. You counsel S.P on risk factor modification, what would you address and why?