The purpose of this study is to compare compliance between patients with Acute Bacterial Sinusitis (ABS) treated with Azithromycin SR 2.0 g single dose orally and those treated with Amoxiclav - 1000 mg twice daily 10 days for the empiric treatment of ABS in outpatient clinic practice.

Inclusion Criteria:

• Male or nor pregnant or lactating female outpatients, 18 years of age or older.

• A clinical diagnosis of acute bacterial uncomplicated maxillary sinusitis as demonstrated by presence of the following signs and symptoms for a minimum duration of 7-10 days:

  1. Facial pain, pressure and/or tightness over one or both maxillary sinuses, and/or pain in one or both maxillary areas that worsens with movement or percussion, and
  2. Presence of one or more of the following signs:

  i.purulent nasal discharge ii.purulent drainage in the posterior pharynx iii.purulent discharge from the maxillary sinus orifice

• A sinus X-ray (Water's view) confirming the clinical diagnosis of maxillary sinusitis. At least one of the following must be documented in one or both maxillary sinuses on radiologic examination:

  1. complete or partial opacification
  2. an air/fluid level

Two or more of the following:

1. fever, as defined by temperature: >38ºC
2. leukocytosis [White Blood Cell (WBC) >10,000/mm3 or >15% band forms], ECR;
3. headache,
4. nasal congestion and post nasal drainage.

Exclusion Criteria:

• Known or suspected hypersensitivity or intolerance or contraindications to Azithromycin, Amoxiclav according to LPDs, pregnant or lactating women.

Patients with Acute Maxillary Sinusitis