Alexei Volkov
The endotracheal tube, also known as the ET tube, is a medical device used to assist with breathing during surgery or in emergency situations. It is a small, flexible plastic tube constructed of polyvinyl chloride (PVC) that is inserted through the mouth or nose and placed in the trachea (windpipe) to deliver oxygen and other gases to the lungs. The tube also helps to protect the lungs from contamination by creating a seal to prevent harmful substances such as gastric fluids or blood from entering. The ET tube is typically attached to a ventilator, which breathes for the patient when they are unable to do so on their own.
| Characteristics | Values |
|---|---|
| Material | Polyvinyl chloride (PVC), silicone rubber, latex rubber, stainless steel, plastic |
| Purpose | To deliver oxygen and other gases to the lungs, protect the lungs from contamination, administer medications, and prevent airway fires |
| Use | During surgery, in emergency situations, or when a person is unable to breathe on their own |
| Insertion | Through the mouth (orotracheal) or nose (nasotracheal), and into the trachea |
| Flexibility | Flexible, but some are reinforced with wire or metal coil to prevent kinking or blocking |
| Length and diameter | Varies depending on age, gender, and body size; typically measured in millimeters (mm) with a range of 2-10.5 mm inner diameter |
| Cuff | Some have an inflatable cuff to seal the trachea and prevent leaks; some have a low-volume, high-pressure cuff, while others have a high-volume, low-pressure cuff |
| Complications | Side effects include vocal hoarseness, sore throat, pneumonia, and collapsed lung |
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What You'll Learn
The endotracheal tube (ETT) is made of plastic
The endotracheal tube (ETT) is a plastic tube that is placed in the trachea (windpipe) through the mouth or nose. It is a critical component in medical procedures, often used during surgery and in emergency situations to assist with breathing. Endotracheal tubes are typically utilised when an individual is unable to breathe independently or requires support due to conditions affecting their respiratory system.
The ETT is constructed from a plastic material called polyvinyl chloride (PVC), which is flexible yet relatively stiff compared to other materials. It is inserted through the vocal cords, past the voice box, and into the trachea to deliver oxygen and other necessary gases to the lungs. The tube also plays a protective role by safeguarding the lungs from contamination by harmful substances such as gastric contents and blood.
The size of the ETT is an important consideration. It is determined by measuring the internal diameter in millimetres (mm), with the standard notation being "give me a 6.0 tube", referring to a tube with an internal diameter of 6.0 mm and an outer diameter of 8.8 mm. The narrower the tube, the greater the resistance to gas flow, so medical providers must select the largest suitable tube for the patient. This is especially critical for patients who are spontaneously breathing, as they will have to exert more effort to breathe through a narrower tube.
The ETT has undergone modifications over time to enhance its functionality and safety. Advances have been made to minimise aspiration, isolate a lung, administer medications, and prevent airway fires. However, ongoing research is still necessary to optimise its use further. For example, there are concerns about the association between the ETT and ventilator-associated pneumonia (VAP).
The placement of the ETT, known as endotracheal intubation, is a common yet critical medical procedure. It involves inserting the tube through the patient's mouth or nose, past the vocal cords, and into the trachea. During the procedure, the patient is unconscious and provided with extra oxygen. Once the ETT is in place, the healthcare provider ensures its proper positioning by listening for breathing sounds and checking for chest movement. An X-ray may also be utilised to confirm the correct placement of the tube.
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ETTs are used to assist with breathing
An endotracheal tube (ETT) is a flexible tube constructed of polyvinyl chloride (PVC) that is placed between the vocal cords through the trachea to assist with breathing. ETTs are used during surgery or to support breathing in people with lung disease, chest trauma, or airway obstruction. They can also be used to deliver oxygen at higher concentrations than found in air, or to administer other gases such as helium, nitric oxide, or anesthetic agents.
The ETT was first reliably used in the early 1900s and has since undergone modifications to minimize aspiration, isolate a lung, administer medications, and prevent airway fires. Despite these advances, more research is needed to optimize its use, as there is a risk of developing ventilator-associated pneumonia (VAP).
The size of the ETT is important for effective breathing assistance. The ETT size refers to its internal diameter in millimeters (mm), with the inner and outer diameters listed. Medical providers should select the largest appropriate tube for the patient, as narrower tubes increase resistance to gas flow. The ETT should be placed securely to prevent dislodgement, and its position can be confirmed through X-rays or capnography.
ETTs are commonly used in emergency departments and intensive care units, often in emergency situations when a person is unable to breathe on their own. Intubation is a life-saving procedure that can be performed in a hospital or outside by emergency medical services. It involves inserting the ETT through the mouth or nose, then into the trachea to keep the airway open and allow air into the lungs.
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ETTs are inserted when a patient is unconscious
An endotracheal tube (ETT) is a plastic tube constructed of polyvinyl chloride (PVC) that is placed between the vocal cords through the trachea to provide oxygen and inhaled gases to the lungs. It also serves to protect the lungs from contamination, such as gastric contents and blood. ETTs are commonly used for airway management in the settings of general anesthesia, critical care, mechanical ventilation, and emergency medicine.
The placement of an ETT is called endotracheal intubation. This procedure is often performed when a person is unconscious and unable to breathe on their own. During the procedure, the patient's head is tilted back, and a laryngoscope is inserted into their mouth or nose, helping guide the ETT through the vocal cords and into the trachea. An oral device may be used to keep the tongue out of the way and facilitate the placement of the tube.
Once the ETT is in the correct position, a small balloon, or cuff, is inflated around the tube to ensure it stays in place and that all air from the tube reaches the lungs. The ideal cuff pressure should be 20 cm H2O or less. The depth of the ETT is then measured at the patient's teeth or lips, providing a baseline to ensure the tube remains in the correct position. An X-ray can also be taken to confirm the placement of the tube.
After intubation, the ETT can be connected to a machine that delivers air or oxygen with pressure, known as mechanical ventilation. This process is crucial for patients who require respiratory support during surgery or due to conditions such as lung disease, chest trauma, or airway obstruction.
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ETTs are attached to a ventilator
An endotracheal tube (ETT) is a plastic tube that is placed in the trachea (windpipe) through the mouth or nose. It can be used to assist with breathing during surgery or to support breathing in people with lung disease, chest trauma, or airway obstruction. When a patient is unable to breathe on their own, an ETT is inserted into their trachea, and then attached to a ventilator. The ventilator then breathes for the patient, providing oxygen and removing carbon dioxide.
The ETT was first reliably used in the early 1900s. In its simplest form, it is a tube constructed of polyvinyl chloride (PVC) that is placed between the vocal cords through the trachea to provide oxygen and inhaled gases to the lungs. It also serves to protect the lungs from contamination, such as gastric contents or blood.
The advancement of the ETT has closely followed advancements in anaesthesia and surgery. Modifications have been made to minimise aspiration, isolate a lung, administer medications, and prevent airway fires. Despite these advances, more research to optimise its use is necessary. For example, ventilator-associated pneumonia (VAP) is a major concern, and the ETT itself is felt to be a primary agent for the development of VAP.
The ETT has a length and diameter. The size of the ETT refers to its internal diameter in millimetres (mm). The ETT will typically list both the inner and outer diameter of the tube. The narrower the tube, the greater the resistance to gas flow. Therefore, medical providers should select the largest tube that is appropriate for the patient.
The ETT is attached to a ventilator using an ETT connector. For adult and pediatric ETTs, it is customary to use the universal 15 mm connector. The ventilator then provides oxygen and breathes for the patient until they are able to breathe on their own.
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ETTs can be removed when a patient can breathe independently
Endotracheal tubes (ETTs) are used to assist with breathing during surgery or to support breathing in people with lung disease, chest trauma, or airway obstruction. They are typically placed when a person is unable to breathe on their own.
An ETT is a flexible tube constructed of polyvinyl chloride (PVC) that is inserted through the mouth or nose and placed in the trachea (windpipe). It provides oxygen and inhaled gases to the lungs and protects them from contamination, such as gastric contents or blood.
The size of the ETT is chosen based on the patient's body size, with smaller sizes used for pediatric and neonatal patients. The ETT size refers to its internal diameter in millimeters (mm). The narrower the tube, the greater the resistance to gas flow, so medical providers should select the largest tube that is appropriate for the patient.
Once a patient is able to breathe independently, the ETT can be removed. However, it is important to note that prolonged use of an ETT can lead to severe complications such as pneumonia and collapsed lungs. If a person is unable to breathe on their own after 14 days, they may need to undergo a tracheostomy, where a tube is inserted directly into the trachea through an incision in the neck.
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Frequently asked questions
An endotracheal tube (ET) is a flexible plastic tube that is placed in the trachea (windpipe) through the mouth or nose. It is used to assist with breathing during surgery or to support breathing in people with lung disease, chest trauma, or airway obstruction.
Most ET tubes are made from polyvinyl chloride (PVC), a type of plastic. However, specialty tubes made from silicone rubber, latex rubber, or stainless steel are also available.
The ET tube is attached to a ventilator, which delivers oxygen and breathes for the patient when they cannot breathe on their own. The tube creates a seal to prevent unwanted substances from entering the lungs.
An ET tube may be necessary for individuals who are unable to breathe adequately on their own due to injuries, serious illnesses, or a heart attack. It is also used during surgery to assist with breathing.
The use of an ET tube can cause side effects such as vocal hoarseness, sore throat, and difficulty speaking. In prolonged use, there may be severe complications like pneumonia and collapsed lungs.
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