Moxifloxacin in the treatment of acute maxillary sinusitis after first-line treatment failure and acute sinusitis with high risk of complications.

This multicentre, prospective study evaluated the efficacy and safety of 7-day oral moxifloxacin (400 mg/day) for treatment of acute maxillary sinusitis after first-line treatment failure (group 1), and acute sinusitis with high risk of complications (group 2). Two hundred and fifty-eight patients with radiologically confirmed acute sinusitis were enrolled by 52 investigators; 216 patients (83.7%) qualified for per protocol efficacy analysis (group 1, n = 175; group 2, n = 41), and 92 for bacteriological analysis. Samples were collected from the middle meatus. The clinical success rate 7-10 days post-treatment was 92.6%. Bacteriological success rates were 95.7% after 3-4 days of treatment, and 97.2% and 95.2%, in group 1 and group 2, respectively, at 7-10 days post-treatment. Drug-related adverse events, including abdominal pain (2.4%), nausea (2.4%) and diarrhoea (1.2%), were reported in 12.2% of patients. Overall, moxifloxacin therapy resulted in rapid bacteriological eradication, with a high rate of clinical success.