In emergency tracheostomy the following structures are damaged except?
Isthmus, thyroid ima aery and inferior thyroid veins are midline structures and thus can be injured during tracheostomy, more so during emergency tracheostomy. Inferior thyroid aery, a branch of the thyrocervical trunk of the subclan aery lies laterally away from midline, thus can escape injury. In emergency tracheostomy following structures can be damaged: - Isthmus - Inferior thyroid veins - Thyroid ima aery - Left brachio-cephalic vein, jugular venous arch - Pleura (especially infants) - Thymus - Esophagus (the trachea is small, mobile, and soft in infants damage the esophagus)
Isthmus of the thyroid
Inferior thyroid aery
Thyroid ima
Inferior thyroid vein