The block is done with 2.5 to 5 ml of 1 % lidocaine injected with a needle 27 into the tracheoesophageal sulcus, just under the cricothyroid junction. This is the entry site of the recurrent laryngeal nerve 6.
Se realiza con 2,5 a 5 ml de lidocaína al 1 % aplicados con aguja 27 en el surco traqueoesofágico justo debajo de la unión cricotiroidea; sitio de entrada del nervio laríngeo recurrente 6.