1/5/2024 0 Comments Double lumen tube![]() Placement has been found to be easier with the aid of fiber optical equipment such as a bronchoscope. And there is a small simulator to help in the training of Carlens tube rotation maneuvers. Proper placement of DLTs requires considerable clinical experience, various techniques for their insertion having been developed. They incorporate an endotracheal lumen which terminates in the trachea and an endobronchial lumen, the distal tip of which is positioned 1–2 cm into the right or left mainstem bronchus. These tubes are typically coaxial, with two separate channels and two separate openings. ![]() The deflated lung is re-inflated as surgery finishes to check for leakages or other injuries. This may be necessary so as to facilitate the surgeon's view and access to relevant structures within the thoracic cavity. These allow single-lung ventilation while the other lung is collapsed to make Thoracic surgery easier or possible. The most commonly used DLTs today are the Carlens and the Robertshaw tubes. Modifications to the original Carlens tube have been introduced by White, Robertshaw and others. The first double-lumen tube used for bronchospirometry and later for one-lung anaesthesia in humans was introduced by Carlens in 1949. The shorter tube ends in the trachea while the longer one is placed in either the left or right bronchus in order to selectively ventilate the left or right lung respectively. Development and description Ī DLT is made up of two small-lumen endotracheal tubes of unequal length fixed side by side. Relative indications include the collapse of one lung and the selective ventilation of the remaining lung in order to facilitate exposure of the anatomical structures to be operated on in thoracic surgeries, such as the repair of a thoracic aortic aneurysm, pneumonectomy or lobectomy. Absolute indications include separation of the right from the left lung to avoid spillage of blood or pus from an infected or bleeding side to the unaffected side. There are several conditions that may make one-sided lung ventilation necessary.
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