A 78-year-old patient was transported to the Emergency Department because of general fatigue, peripheral pitting edema of lower limbs and dyspnea increasing for the last month. The patient has a several year history of well-controlled arterial hypertension and rheumatoid arthritis with a sustained moderate disease activity despite the use of non-steroidal anti-inflammatory drugs. Because of the increasing edemas his family doctor gave him furosemide, twice daily, 10 days earlier. The treatment did not alleviate edemas. Which of the following should be first ordered to find the cause of increasing fluid retention?
Dział: Interna
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