PCR Technique to Identify Methicillin-sensitive and Methicillin-resistant Staphylococcus Aureus in Nasal and Respiratory Tract Samples

In patients on mechanical ventilation, it is not known whether the identification of S. aureus in LRT samples improves the performance of its nasal detection. To assess the MSSA or MRSA carrier status of patients requiring mechanical ventilation for more than 48 hours after major heart surgery: comparing the performance of the diagnostic technique Xpert® SA Nasal Complete assay in nasal swab and LRT samples.