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Limited data exist to guide physicians in the cost-effective treatment of acute exacerbation of chronic bronchitis (AECB). Therefore, the main objective of this study was to determine the antimicrobial efficacy and related costs for patients with AECB. A retrospective review of 60 outpatient medical records with a diagnosis of chronic obstructive pulmonary disease (COPD) and chronic bronchitis episodes from a pulmonary clinic of a teaching institution was undertaken. The participating patients had a total of 224 episodes of AECB requiring antibiotic treatment. Before review, empirical antibiotic choices were divided into first-line (amoxycillin, co-trimoxazole, tetracyclines, erythromycin), second-line (cephradine, cefuroxime, cefaclor, cefprozil) and third-line (co-amoxiclav, azithromycin, ciprofloxacin) agents. Patients receiving first-line agents failed significantly more frequently than third-line agents (19% vs 7%, P < 0.05). Additionally, patients prescribed first-line agents were hospitalized significantly more often for AECB within 2 weeks of outpatient treatment as compared with patients prescribed third-line agents (18.0% vs 5.3% third-line agents; P < 0.02). Time between subsequent AECB episodes requiring treatment was significantly longer for patients receiving third-line agents compared with first-line and second-line agents (P < 0.005). Pharmacy costs were lowest with first-line agents (first-line US$10.30 +/- 8.76; second-line US$24.45 +/- 25.65; third-line US$45.40 +/- 11.11; P < 0.0001), but third-line agents showed a trend towards lower mean total costs of AECB treatment (first-line US$942 +/- 2173; second-line, US$563 +/- 2296; third-line, US$542 +/- 1946). The use of third-line antimicrobials, co-amoxiclav, ciprofloxacin or azithromycin, significantly reduced the failure rate and need for hospitalization, prolonged the time between AECB episodes, and showed a lower total cost for the management of AECB. Prospective studies are needed to confirm these findings.

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Relevant clinical and physiologic data are available to help guide decision making in the management of patients who are at risk for or already have postoperative pulmonary complications. Prophylactic measures should be simple and focused. Inexpensive treatment methods should be tried before resorting to more individual-intensive and expensive measures. Proper treatment of postoperative atelectasis requires adequate patient assessment and knowledge of the therapeutic options. Costs, measured in dollars as well as in patient morbidity and mortality, are substantially greater when physicians fail to recognize and treat reversible disease before elective surgery and when effective postoperative therapy is not provided in accordance with individual needs.

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