Clinical Trial to Study the Efficacy and Safety of Fluorothiazinone (N.F. Gamaleya NRCEM) in Prophylaxis of Nosocomial Bacterial Infections With Participation of Patients on MV

"Treatment arm patients will receive Fluorothiazinone, tablets 300 mg at a dose:~* 2400 mg/day (4 tablets twice a day) for the first 2 days and;~* 1800 mg/day (3 tablets twice a day) from the third day and further (but no more than 14 days) until the occurrence of ventilator-associated pneumonia caused by gram-negative bacteria, confirmed clinically and microbiologically, OR the completion of the patient's participation in the study for other reasons.~Tablets are taken 2 times a day 12 hours apart 30 minutes after meal, no more than 14 days."

"Placebo arm patients will receive placebo:~* 4 tablets twice a day for the first 2 days and;~* 3 tablets twice a day and further (but no more than 14 days) until the occurrence of ventilator-associated pneumonia caused by gram-negative bacteria, confirmed clinically and microbiologically, OR the completion of the patient's participation in the study for other reasons.~Tablets are taken 2 times a day 12 hours apart 30 minutes after meal, no more than 14 days."