72 y/o woman presented to the ED for swollen and painful leg.
Physical examination shows an erythematous, tender and warm leg.
Probably it is a cellulitis.
In previous post we stressed the US use to increase diagnostic accuracy.
Can WBC or CPR help in the differential diagnoses?
Do they have a role in the decision to admit the patient to the Hospital?
WBC count is not helpful for differential diagnosis, or to determine the route of antibiotics administration, furthermore it has a small weight in the decision to admit a patient to the Hospital.
An elevated CPR is a better indicator to “rule in” but if negative it’s unreliable.
The routine blood investigation in ED takes another beating.
G.Phoenix et al
Diagnosis and management of cellulitis.
BMJ 2012 345: e4955 (published 7 Aug 2012).