down the TRACHEA into the lungs, usually in the course of administering anaesthetics (see under ANAESTHESIA).
Eustachian catheters are small catheters that are passed along the ?oor of the nose into the Eustachian tube in order to in?ate the ear.
Nasal catheters are tubes passed through the nose into the stomach to feed a patient who cannot swallow – so-called nasal feeding.
Rectal catheters are passed into the RECTUM in order to introduce ?uid into the rectum.
Suprapubic catheters are passed into the bladder through an incision in the lower abdominal wall just above the pubis, either to allow urine to drain away from the bladder, or to wash out an infected bladder.
Ureteric catheters are small catheters that are passed up the ureter into the pelvis of the kidney, usually to determine the state of the kidney, either by obtaining a sample of urine direct from the kidney or to inject a radio-opaque substance preliminary to X-raying the kidney. (See PYELOGRAPHY.)
Urethral catheters are catheters that are passed along the urethra into the bladder, either to draw o? urine or to wash out the bladder.
It is these last three types of catheters that are most extensively used.... endotracheal catheters are used to pass
Insertion of a rubber or plastic tube through the nose or mouth into the TRACHEA. The tube often has a cu? at its lower end which, when in?ated, provides an airtight seal. This allows an anaesthetist to supply oxygen or anaesthetic gases to the lungs with the knowledge of exactly how much the patient is receiving. Endotracheal intubation is necessary to undertake arti?cial ventilation of a patient (see ANAESTHESIA).... endotracheal intubation
A tube that is passed into the trachea through the nose or mouth that enables delivery of oxygen during artificial ventilation or of anaesthetic gases (see anaesthesia) during surgery. An inflatable cuff around the lower end of the endotracheal tube prevents secretions or stomach contents from entering the lungs.... endotracheal tube
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