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

  • End date
    Apr 19, 2023
  • participants needed
  • sponsor
    MEDSI Clinical Hospital 1, ICU
Updated on 19 June 2021
assisted ventilation


Secondary infections remain a major cause of mortality in critically ill patients, mainly because of high prevalence of multidrug-resistant microorganisms. Therefore strategies aimed to reduce the incidence of ventilator-associated pneumoniae (VAP) and bloodstream infections are of utmost important. There is robust data on selective digestive decontamination (SDD) efficacy in reduction of secondary infections in intensive care units (ICU) with low rates of antibacterial resistance. However the data received from hospitals with moderate-to-high rates of resistance is equivocal.

This as an interventional parallel open-label study investigating the effect of selective digestive decontamination on the rates of ventilator-associated pneumonia in critically ill patients admitted to the ICU with high prevalence of drug-resistant bacteria. Secondary outcomes include rates of bloodstream infections, mortality, duration of mechanical ventilation, duration of ICU stay, resistance selection and overall antibiotic consumption.


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:

  1. 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
  2. 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
  3. 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.

Condition pneumoniae, ards, pneumonitis, respiratory tract infection, sepsis, systemic infections, Lung Disease, respiratory tract infections, Pneumonia, respiratory infections, sepsis syndrome, Critical Illness, respiratory infection, lung inflammation, Pneumonia (Pediatric), Sepsis and Septicemia, Throat and Tonsil Infections, systemic infection, Septicemia, Bloodstream Infection, respiratory distress syndrome of newborn, Upper respiratory infection, respiratory distress syndrome, acute respiratory distress syndrome, Pulmonary Disease, critically ill, Ventilator associated pneumonia, infections, respiratory
Treatment Oral Paste(0,5 g) containing 10 mg of polymyxin B, 10 mg of gentamycin and 150 mg of amphotericine B or 500 000 U of nistatin q6h, Suspension (10 ml) containing 100 mg of polymyxin B, 80 mg of gentamycin, 350 mg of amphotericine B or 8000000 U of nistation and 500 mg of vancomycin q6h, Intravenous Antibacterial Agent - a 3-day course of systemic cefotaxime 1 g q6h or ceftriaxone 1 g qd
Clinical Study IdentifierNCT04839653
SponsorMEDSI Clinical Hospital 1, ICU
Last Modified on19 June 2021


Yes No Not Sure

Inclusion Criteria

Patients with expected MV for more than 24 hours

Exclusion Criteria

Moribund condition and expected death within 24 hours
Malignancy (excluding primary CNS tumors)
Patients transferred from other hospitals who were mechanically ventilated for more than 24 hours (including NIV)
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