In emergency tracheostomy all of the following structures are damaged, EXCEPT?: (A) Isthmus of the thyroid, (B) Inferior thyroid aery, (C) Thyroid ima aery, (D) Inferior thyroid vein
Answer is B. Bleeding can occur immediately after a tracheostomy and in the late postoperative period. Sources of hemorrhage include granulation tissue in the stoma or trachea, and erosion of thyroid vessels or the thyroid itself, the tracheal wall (frequently from suction trauma), or the innominate aery. Inferior thyroid aery, a branch of the thyrocervical trunk of the subclan aery lies laterally away from midline, thus can escape injury.