A 67-year-old man had a physical examination prior to beginning volunteer work at the hospital. A routine chest x-ray demonstrated left ventricular hypertrophy. His blood pressure was 180/110. He is 45 lb overweight. His diet is high in sodium and fat. He has a strong family history of hypertension. The client is placed on antihypertensive medication; a low-sodium, low-fat diet; and an exercise regimen. On his next visit, compliance would best be determined by:
A blood pressure reading of 130/70 with a 5-lb weight loss
No side effects from antihypertensive medication and an accurate pill count
No evidence of increased left ventricular hypertrophy on chest x-ray
Serum blood levels of the antihypertensive medication within therapeutic range
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