Efficacy and Safety of Selective Digestive Decontamination in the ICU With High Rates of Antibiotic-resistant Bacteria

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Single-center prospective interventional parallel study. During the first period of the study patients will receive standard therapy. During the second period the SDD protocol will be implemented in addition to the standard care. The first period will end at the moment of the last admitted patient I...

Single-center prospective interventional parallel study. During the first period of the study patients will receive standard therapy. During the second period the SDD protocol will be implemented in addition to the standard care. The first period will end at the moment of the last admitted patient ICU discharge or death. Study population: general ICU adult patients anticipated to receive prolonged mechanical ventilation (more than 48 hours). Patients who are terminally ill and are anticipated to die in the next 24 hours will be excluded, so are patients with malignancies (except for patients with primary central nervous system tumors who received radical treatment) and patients admitted from other hospitals who received mechanical ventilation (including non-invasive ventilation) for more than 24 hours. Patients in the interventional arm will receive the following SDD protocol: Oral paste (0,5 g) containing 10 mg of polymyxin B, 10 mg of gentamycin and 150 mg of amphotericine B/500000 U of nistatin q6h In the nasogastric tube (NGT) 10 ml of suspension containing 100 mg of polymyxin B, 80 mg of gentamycin, 350 mg of amphotericine B/8000000 U of nistatin and 500 mg of vancomycin q6h A 3-day course of intravenous cefotaxime 1 g q6h/ceftriaxone 1 qd Statistical considerations and recruitment plant: VAP incidence in the ICU with high rates of antibacterial resistance is 16,7 event per 1000 days of MV. To reveal a 25% decrease of VAP events (power 80%, p < 0,05) the study should recruit 25 patients in each group. However because of the poor prognosis in mechanically ventilated elderly patients especially in the setting of acute respiratory distress syndrome the goal is to recruit in each arm at least 25 patients younger than 65 years.

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