Which lab value is most likely elevated in a patient with acute cholecystitis and jaundice?

Which lab value is most likely elevated in a patient with acute cholecystitis and jaundice?

• A. Creatinine
• B. Bilirubin
• C. Glucose
• D. Ketones

Answer: (B)

The main concept here is that jaundice in biliary disease comes from elevated bilirubin when bile flow is blocked. In acute cholecystitis, there can be obstruction of the biliary tree (such as from a stone), which prevents bilirubin from entering the intestine. This causes bilirubin to back up into the bloodstream, leading to hyperbilirubinemia and visible jaundice. In obstruction, the conjugated (direct) bilirubin rises, and this is the lab value that explains the jaundice most directly. Creatinine reflects kidney function, which isn’t specifically driven by biliary obstruction. Glucose and ketones are related to metabolic states or diabetes and aren’t the characteristic findings of this scenario.

The main concept here is that jaundice in biliary disease comes from elevated bilirubin when bile flow is blocked. In acute cholecystitis, there can be obstruction of the biliary tree (such as from a stone), which prevents bilirubin from entering the intestine. This causes bilirubin to back up into the bloodstream, leading to hyperbilirubinemia and visible jaundice. In obstruction, the conjugated (direct) bilirubin rises, and this is the lab value that explains the jaundice most directly.

Creatinine reflects kidney function, which isn’t specifically driven by biliary obstruction. Glucose and ketones are related to metabolic states or diabetes and aren’t the characteristic findings of this scenario.