Cricoid pressure is a manouvere done to occlude the upper esophagus by pressure at the cricoid cartilage, which is a complete ring of cartilage caudal to the most prominent cartilage (the thyroid cartilage), against the c5 vertebral body. The cartilage is fixed with the first and second digits and with the application of directly backward with a force of 30N
more evidence needed! ___
