A Pharmacokinetic-pharmacodynamic Dose Comparison Study of 8 mg/kg of Inhaled or Parenteral Gentamicin in 12 Mechanically Ventilated Critically Ill Patients Treated for Ventilator-associated Pneumonia (GENTAERO)

A Pharmacokinetic-pharmacodynamic Dose Comparison Study of 8 mg/kg of Inhaled or Parenteral Gentamicin in 12 Mechanically Ventilated Critically Ill Patients Treated for Ventilator-associated Pneumonia

Ventilator associated pneumonia (VAP) remains in the intensive care unit the infection associated with the highest morbidity and mortality. Respiratory infection with resistant organism are increasing in prevalence. Because of lack of alternatives, amino glycoside, old antibiotics family, can be used for several infection. Aerosolized Amikacin or Tobramycin are used in mechanically ventilated patients for respiratory infections. Gentamicin,which is effective against numerous multi drug resistant Gram-negative organism and Gram-positive like Staphylococcus aureus, could be a great option for nebulisation. The investigators assume that nebulisation of gentamicin allows to obtain a higher lung concentration while assuring a systematic toxicity much lesser than a parenteral administration.

Inclusion Criteria: to be in critical care unit to be mechanically ventilated to have a ventilator-associated pneumonia requiring a treatment by gentamicin to be affiliated to a national insurance scheme to have given an informed consent (patient or close person) Exclusion Criteria: to be obese (BMI > 40 kg/m²) to have been treated by gentamicin for 7 days to be allergic to aminoglycoside to have a severe respiratory failure (PaO2 / FiO2 < 150) to have a renal failure (Cl creat < 60 ml/min/1.73m²) to be under reinforced protection measure