A 2nd - or 3rd-generation cephalosporin, such as cefotaxime 50 mg / kg IV every 6 hours (for children < 12 years) or 1 to 2 g IV every 6 hours (for adults) for 14 days, is an option when sinusitis is present; imipenem, ceftriaxone, and piperacillin / tazobactam are other options.