Suctioning is used to obtain mucus and other fluids (secretions) and cells from the windpipe (trachea) and large airways (bronchi) and is typically used in people who are on mechanical ventilation Mechanical Ventilation Mechanical ventilation is use of a machine to aid the movement of air into and out of the lungs. Some people with respiratory failure need a mechanical ventilator (a machine that helps air get... read more or have problems with nerves or muscles that make coughing less effective for bringing up secretions. Suctioning is used to obtain specimens for microscopic examination or culture when doctors need to identify what organism is causing a lung infection and to help remove secretions from the airways when cough is inadequate.
One end of a long, flexible, clear plastic tube is attached to a suction pump; the other end is passed through a nostril or the mouth and into the trachea. When the tube is in position, suction is applied in intermittent bursts lasting 2 to 5 seconds. With people who have a tube in the neck that leads to the trachea (tracheostomy) or a tube in the nose or mouth that leads to the trachea (endotracheal tube), the suctioning tube can be inserted directly into the tube that leads to the trachea. Sometimes inserting some salt water into the tube that leads to the trachea eases removal of secretions and cells via suctioning.
(See also Medical History and Physical Examination for Lung Disorders Medical History and Physical Examination for Lung Disorders A doctor first asks the person about symptoms. Chest tightness or pain, shortness of breath (dyspnea) either at rest or during exertion, cough, coughing up of sputum or blood (hemoptysis), and... read more and Respiratory System Overview of the Respiratory System To sustain life, the body must produce sufficient energy. Energy is produced by burning molecules in food, which is done by the process of oxidation (whereby food molecules are combined with... read more .)