The ambu: lifesaver in respiratory support
A Vital Ally in Respiratory Emergencies
Introduction to the Ambu
The Ambu, also known as a self-expanding bag, is a crucial tool in respiratory support, especially in emergency situations. The term derives from the acronym Auxiliary Manual Breathing Unit, first introduced in 1956. This device is essential for providing artificial ventilation to patients who are unable to breathe on their own. It consists of a plastic bag that can be connected to various equipment, such as endotracheal tubes or facial masks, to assist the patient’s breathing.
Use and Functioning of the Ambu
To use the Ambu, it is essential to understand its operating mechanism. The device is equipped with one-way valves: during the compression of the bag, air is directed into the patient’s lungs, while the release of the bag allows fresh air to fill it, preventing the return of carbon dioxide-laden air. A crucial aspect to consider is the amount of air delivered; for an adult, the bags have a capacity of 1600 ml, but only about 500-600 ml should be delivered to avoid lung damage in the patient. The Ambu can also be connected to an oxygen source to increase the provided oxygen concentration.
Components and Accessories of the Ambu
The Ambu includes several important components. For example, the oxygen connection tube connects the Ambu to the oxygen cylinder. An antibacterial filter can be added to protect the device from patient secretions. The Mount catheter, or corrugated tube, connects the Ambu to the endotracheal tube, allowing greater mobility during patient transport. The Ambu mask, adjustable to different face sizes, is an essential component to ensure effective ventilation in non-intubated patients.
Important Considerations in Ambu Use
The use of the Ambu requires precision and attention, especially in managing the pressure and volume of delivered air. It is important to ensure that the device is always in good condition and that the personnel using it have received proper training. The presence of the Ambu in emergency kits and healthcare settings is a crucial factor in ensuring a timely and effective response to respiratory crises.
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