A<unk> <unk>  leaves more anatomical dead space in the trachea than with tracheal intubation. This can decrease the oxygenation of the lungs and the removal of carbon dioxide. It also slightly increases<unk>  resistance. More serious complications include vomiting while the<unk>  is in place (potentially leading to aspiration of stomach contents). Although the<unk>  is specifically designed to be easy to place, it is possible for the ventilation it provides to be inadequate. This may be due to variations in neck anatomy, abnormal neck position, dislodgement of the cuff, the<unk>  not being long enough to reach the larynx (or more rarely too long), or folding of the<unk>  in the pharynx. For these reasons, radiology can be used to ensure that the<unk>  is in the correct position.
Laryngeal mask airway
Venturi mask
N95 respirator
Elastomeric respirator
Electrolarynx
Nasal cannula
Chondrolaryngoplasty
Nasal irrigation