Question

if a patient presents with elevated bun and sodium what is the most likely diagnosis?
a) gallstones
b) hepatomegaly
c) renal disease
d) splenomegaly

Explanation:

BUN (blood - urea - nitrogen) is a measure of kidney function. The kidneys are responsible for filtering waste products like urea (from which BUN is derived) and regulating sodium levels. Renal (kidney) disease impairs the kidneys' ability to filter and excrete waste (leading to elevated BUN) and disrupts electrolyte (including sodium) balance. Gallstones (a) affect the gallbladder and biliary system, hepatomegaly (b) is an enlarged liver (liver diseases more commonly affect bilirubin, liver enzymes etc., not directly BUN and sodium in the way described), and splenomegaly (d) is an enlarged spleen (spleen disorders are more related to blood cell counts in many cases, not BUN and sodium regulation).

Answer:

C. Renal disease