case : hypertensive with bilateral leg swelling

 old age male with hx of htn and have bilateral leg swelling ?

what to exclude ? whats 3 important points 

hypertensive-nephropathy = send urea/creatinine , electrolyte 

heart failure = echo , b-natriuretic peptide BNP 

drug hx (calcium-channel blocker amlodipine )

the story was he changed his htn drug since 3 weeks ago to exval (amlodipine/valsartan 5/160mg) 

and that was the cause of bilateral leg swelling 

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