Ventilator-acquired pneumonia: what to know

A breathing tube can reduce the normal protection provided by coughing and swallowing. Germs from the mouth or stomach can enter the lower airways, where mucus may collect around the tube. Infection can cause inflammation and fluid in the air sacs, making oxygen exchange harder.

Possible clues include a new or changing cough, thicker phlegm, fever, chills, faster breathing or increasing oxygen needs. Sedation, the original illness and the ventilator itself can make symptoms less obvious, so the intensive-care team also watches examination findings, oxygen readings and chest imaging. Pneumonia is not diagnosed from one symptom alone.

The hospital team may collect respiratory samples and blood tests, examine the lungs and review imaging. Antibiotics are selected according to the suspected germs and adjusted when results are available. Ventilator settings, oxygen, fluids, suctioning and positioning are tailored to the person’s breathing and circulation.

Families can help by sharing the person’s medicines, allergies and recent infections with the team. Mouth care, hand hygiene, safe positioning and reducing ventilator support when clinically appropriate are part of prevention and recovery. Do not give food, drink or medicines through the mouth unless the treating team confirms it is safe.

A person on a ventilator is already in hospital, so tell the bedside team immediately about new fever, chills, a change in phlegm, worsening breathing, unusual sleepiness or a drop in oxygen readings. Severe breathlessness, blue or grey lips, confusion, very low blood pressure or rapidly worsening weakness may indicate a life-threatening infection such as sepsis and require emergency treatment.

What findings suggest pneumonia in this patient? Have respiratory samples been taken, and when will results guide antibiotics? How is oxygenation changing? What is being done to protect the airway and reduce further infection?