Endotracheal Tube

Endotracheal Tube refers to an endotracheal catheter, and the following is a detailed introduction about it:

Definition and Purpose

Definition: An endotracheal tube is a tubular medical device used for insertion into the trachea, usually made of materials such as plastic or rubber.

Purpose: It is mainly used to establish and maintain airway patency, ensuring the exchange of oxygen and carbon dioxide. It is widely applied in medical scenarios such as anesthesia, emergency treatment, and intensive care. For example, during general anesthesia surgery, the doctor will insert the endotracheal tube into the patient's trachea, connect it to the anesthesia machine and ventilator to provide anesthetic gases to the patient and perform mechanical ventilation, ensuring the patient's normal breathing during the operation.

Structure and Types

Structure: Generally, it includes parts such as the tube body, the cuff, the connector, and the stylet. The tube body is a hollow pipeline for gas passage; the cuff is located at a specific position of the catheter, and after inflation, it can prevent gas leakage and the entry of secretions into the airway; the connector is used to connect with devices such as the anesthesia machine and the ventilator; the stylet can help the catheter be smoothly inserted into the trachea.

Types: According to different classification criteria, there are various types of endotracheal tubes. According to the insertion site, they can be divided into orotracheal tubes and nasotracheal tubes. Oro-tracheal intubation is relatively easy, and it is suitable for quickly establishing an airway in emergency situations. Nasotracheal tubes are better tolerated by patients and are suitable for those who need endotracheal intubation for a long time. According to their functions, they can be divided into ordinary endotracheal tubes, double-lumen endobronchial tubes, etc. Double-lumen endobronchial tubes can independently ventilate and manage the two lungs, and are often used in surgeries such as lung isolation.

Operation Method

The insertion of an endotracheal tube usually requires the assistance of tools such as a laryngoscope. Taking orotracheal intubation as an example, the doctor will first place the patient in an appropriate position, then use a laryngoscope to expose the glottis, insert the endotracheal tube into the trachea through the glottis. After inserting it to an appropriate depth, inflate the cuff, and finally connect it to devices such as a ventilator or an anesthesia machine. The operation process needs to strictly follow the principles of asepsis and operation specifications to avoid complications such as infection and airway injury.

Precautions

When using an endotracheal tube, it is necessary to closely observe the patient's vital signs, including respiration, heart rate, oxygen saturation, etc., to ensure the correct position of the catheter and good ventilation function.

Pay attention to maintaining the patency of the catheter to prevent blockage of the catheter by sputum, blood, etc.

Regularly monitor the pressure of the cuff to avoid damage to the tracheal mucosa caused by excessive pressure or gas leakage due to too low pressure.

For patients who use an endotracheal tube for a long time, it is also necessary to prevent the occurrence of complications such as infection and tracheal stenosis, and do a good job in oral care, airway humidification, and other work.

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