Question

A nurse is caring for a child with a suspected diagnosis of rheumatic fever (RF). The nurse reviews the laboratory results. Which laboratory study would assist in confirming the diagnosis of RF?

1.Immunoglobulin
2.Red blood cell count
3.White blood cell count
4.Anti-streptolysin O titer

Answer 1

The Anti-streptolysin O titer is the laboratory study that would assist in confirming the diagnosis of rheumatic fever in a child.

Step-by-step explanation:

The laboratory study that would assist in confirming the diagnosis of rheumatic fever in a child would be the Anti-streptolysin O titer.

Rheumatic fever is caused by a cross-reaction between patient antibodies to bacterial surface proteins and similar proteins found in the body. The Anti-streptolysin O (ASO) titer measures the level of antibodies against streptolysin O, a protein produced by the bacteria that causes strep throat. Elevated ASO levels indicate recent or current streptococcal infection, which is a common precursor to rheumatic fever.