In emergency tracheostomy the following structures are damaged except?
High-Yield Explanation
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)