What is a
suction catheter?
A suction catheter is a flexible, long tube attached on one end to
the breathing tube (endotracheal or tracheostomy tube). The other
end of the suction catheter is connected to a collection container
(suction canister) and a device that generates suction.
When is a suction catheter used?
Critically ill or injured patients who require a breathing (endotracheal)
tube or tracheostomy tube need occasional suctioning to remove
secretions from the airway. The respiratory therapist, nurse, or ICU
technician suctions a patient by inserting a small flexible tube
called a suction catheter into the breathing tube. The purpose of
suctioning is to keep the airways clear of secretions and hopefully
prevent plugging of the airways.
Does it hurt to use the suction catheter?
Most patients say yes. It creates an urge to cough and can cause a
burning sensation in the lungs. Fortunately, the discomfort only
lasts a short time.
How often is the suction catheter used?
The frequency of suctioning is determined by the amount of
secretions that the patient produces. The breathing tube is
suctioned whenever fluid builds up in the lungs.
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Suction catheter (bottom tube) attached to
endotracheal tube and suction device (not visible).
The suction catheter is enclosed in a sterile
plastic sheath.
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Suction Catheter 
