Recurrent URTI/LRTI in a child
Appears 2×
Teaching point — how the wording changes the answer
A child with recurrent upper and lower respiratory infections plus failure to thrive points to cystic fibrosis — sweat test. If anaemia dominates, work up microcytic anaemia (ferritin); immunoglobulins if antibody deficiency is suspected.
Q17
Girl with frequent URTIs/LRTIs and microcytic anaemia, investigation.
Key clue
Add weight loss -> CF/marrow
Show answer
Sweat test (or ferritin for the anaemia)
Q90
Child with repeated URTI/LRTI and anaemia, next investigation.
Key clue
Recurrent infections
Show answer
Sweat chloride test (CF)