Tracheal Tubes PDF

‫مادة االجهزة العملي المرحلة الثالثة ‪1‬‬ ‫مدرس مساعد‬ ‫ميثم صباح صادق الحمامي‬ Tracheal tubes  Tracheal tubes provide a means of securing the patient’s airway. These can be made of either plastic (disposable) or rubber (reusable after cleaning and autoclaving). The pl...

‫مادة االجهزة العملي المرحلة الثالثة ‪1‬‬ ‫مدرس مساعد‬ ‫ميثم صباح صادق الحمامي‬ Tracheal tubes  Tracheal tubes provide a means of securing the patient’s airway. These can be made of either plastic (disposable) or rubber (reusable after cleaning and autoclaving). The plastic disposable tracheal tubes have a radio-opaque line running along their length , which enables their position to be determined on chest X- rays. Features of tracheal tubes: Size 1. The internal diameter is marked on the outside of the tube in millimeters. Narrower tubes increase the resistance to gas flow, therefore the largest possible internal diameter should be used. 2. The length (taken from the tip of the tube) is marked in centimetres on the outside of the tube.  The bevel 1.The bevel is left-facing and oval in shape in most tube designs. A left-facing bevel improves the view of the vocal cords during intubation. 2.Some designs have a side hole just above and opposite the bevel, called a Murphy eye. High pressure /low volume Low pressure /high volume The cuff Tracheal (oral or nasal) tube can be either cuffed or uncuffed. The cuff, when inflated, provides an airtight seal between the tube and the tracheal wall. This airtight seal protects the patient’s airway from aspiration and allows efficient ventilation during IPPV. The cuff is connected to its pilot balloon which has a self-sealing valve for injecting air. The pilot balloon also indicates whether the cuff is inflated or not. 1.The narrowest point in the adult’s airway is the glottis( which is hexagonal). In order to achieve an airtight seal, cuffed tubes are in adults. 2.The narrowest point in a child’s airway is the cricoid cartilage. Since this is essentially circular, a correctly sized uncuffed tube will fit well. Connectors: These connect the tracheal tubes to the breathing system (or catheter mount). These are various designs and modifications. They are made of plastic or metal and should have an adequate internal diameter to reduce the resistance to gas flow. The British Standard connector has a 15mm diameter at the proximal end.