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Ceftazidime is the only anti-pseudomonal beta-lactam that has been reported to be administered by extended infusion in pediatric cystic fibrosis (CF) patients. A small pediatric pharmacokinetic/pharmacodynamic study has been published regarding the use of intermittent extended infusion doripenem in the treatment of an acute pulmonary exacerbation (APE) in pediatric CF patients; however, clinical use of intermittent extended infusion doripenem in pediatric CF patients has not been previously reported. We present three cases administering intermittent extended infusion doripenem in pediatric CF patients for the treatment of an APE in the case of replacing meropenem due to shortage. The delivery of beta-lactam antibiotics via intermittent extended infusion should be considered in order to optimize the pharmacodynamics of beta-lactams in the treatment of an APE., (© 2013 Wiley Periodicals, Inc.)

Aztreonam, cefepime, and ceftazidime are anti-pseudomonal beta-lactam antibiotics which have been previously reported to be administered by continuous infusion (CI) in pediatric CF patients. We present two cases administering intravenous (IV) meropenem and ticarcillin-clavulanate by CI in pediatric CF patients. The delivery of beta-lactam antibiotics via CI should be considered in order to optimize the pharmacodynamics (PD) of beta-lactams in the treatment of acute pulmonary exacerbations (APE)., (© 2013 Wiley Periodicals, Inc.)

Inquilinus limosus is a alpha-proteobacterium that has been recently isolate in the airways of cystic fibrosis (CF) patients. We report the isolation of a mucoid strain of I. limosus from the sputum of a 20-year-old male patient with CF over 1 year that was associated with the clinical, spirometric, and radiographic decline in a previously healthy patient.