Infections caused by multidrug-resistant pathogens. Nosocomial infections

1. Big picture

This topic is about two connected problems:

1. Nosocomial / healthcare-associated infections: infections acquired during healthcare exposure, typically in hospital, intensive care unit, long-term care, dialysis, surgery, or after invasive devices.
2. Multidrug-resistant organisms (MDROs): pathogens resistant to multiple antibiotic classes, making empirical treatment harder, mortality higher, and infection-control measures essential.

For the exam, the most important sentence is:

In severe nosocomial infection, treat early and broadly according to the suspected site, patient risk factors, previous cultures, and local resistance rates — then de-escalate once cultures and susceptibilities return.

CDC lists common healthcare-associated infections as central line-associated bloodstream infection (CLABSI), catheter-associated urinary tract infection (CAUTI), surgical site infection (SSI), and ventilator-associated pneumonia (VAP). Healthcare-associated infections spread especially through contaminated hands, equipment, devices, and healthcare procedures. ([CDC][1])

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