In HELLP syndrome, which laboratory findings define the condition?

In HELLP syndrome, which laboratory findings define the condition?

• A. Hemolysis (elevated LDH, schistocytes), elevated liver enzymes (AST/ALT), and low platelets.
• B. Hyperglycemia with normal liver enzymes.
• C. Low LDH with high platelets.
• D. Isolated elevation in bilirubin.

Answer: (A)

The main concept here is the diagnostic triad of HELLP syndrome: Hemolysis, Elevated Liver enzymes, and Low Platelets. In HELLP, red blood cells are destroyed (hemolysis) as they pass through damaged small blood vessels, leading to elevated LDH and often schistocytes on a blood smear. The liver is injured as part of the condition, so liver enzymes such as AST and ALT rise. Platelets are consumed, causing thrombocytopenia. The best choice captures all three elements: evidence of hemolysis (elevated LDH and red cell destruction), elevated liver enzymes (AST/ALT), and a low platelet count. This combination defines HELLP and distinguishes it from other patterns of labs. Why the others don’t fit: hyperglycemia with normal liver enzymes doesn’t show the hemolysis and thrombocytopenia central to HELLP; a picture of low LDH with high platelets contradicts hemolysis and reduced platelets; and an isolated bilirubin rise doesn’t reflect the full triad of hemolysis, liver injury, and thrombocytopenia that defines HELLP.

The main concept here is the diagnostic triad of HELLP syndrome: Hemolysis, Elevated Liver enzymes, and Low Platelets. In HELLP, red blood cells are destroyed (hemolysis) as they pass through damaged small blood vessels, leading to elevated LDH and often schistocytes on a blood smear. The liver is injured as part of the condition, so liver enzymes such as AST and ALT rise. Platelets are consumed, causing thrombocytopenia.

The best choice captures all three elements: evidence of hemolysis (elevated LDH and red cell destruction), elevated liver enzymes (AST/ALT), and a low platelet count. This combination defines HELLP and distinguishes it from other patterns of labs.

Why the others don’t fit: hyperglycemia with normal liver enzymes doesn’t show the hemolysis and thrombocytopenia central to HELLP; a picture of low LDH with high platelets contradicts hemolysis and reduced platelets; and an isolated bilirubin rise doesn’t reflect the full triad of hemolysis, liver injury, and thrombocytopenia that defines HELLP.