| TTA | Trans-Tracheal Aspiration |
|---|---|
| CTSS | cathepsin S; closed tracheal suction system |
| ETC | electron transport chain; esophageal tracheal combitude; estimated time of conception |
| LTA | leukotriene A; lipoate transacetylase; lipotechoic acid; local tracheal anesthesia; long-term archiv... |
| PTLA | pharyngeal tracheal lumen airway |