Azithromycin Ruins Everything

For some reason – and by “some reason”, I mean extensive evaluation of immunomodulatory properties – there is an obsession with azithromycin use for more than simply its anti-bacterial indications. It has been hypothesized to diminish inflammation and have antiviral properties, and, of course, functions as a floor wax and dessert topping.

This is a randomized, controlled trial of azithromycin versus placebo in pre-school children with acute wheezing as a primary diagnosis. The primary outcome was time to resolution of respiratory symptoms, and secondary outcomes included any use of short-acting beta-agonists, adverse events, and time to any repeat exacerbation of wheezing.  These authors enrolled 300 before funding ran out, and were able to follow-up 222 with completed symptom diaries. Patients were generally similar between the two groups, and over 80% of each cohort had prior episodes of wheezing, and a similar percentage used or was prescribed a beta-agonist at discharge from the Emergency Department.

The winner: nothing and no one. Azithromycin did not improve any outcomes versus placebo, and should not be used for suspected viral wheezing in the hopes of anti-inflammatory symptom improvement until better evidence of benefit emerges.

“Treatment of preschool children presenting to the emergency department with wheeze with azithromycin: A placebo-controlled randomized trial”
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0182411

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