Alessandri F, et al. - Via a prospective, single blind, observational study on 194 patients aged more than 18 years, the observers intended to evaluate the ability of pre-operative ultrasound assessment of neck anatomy in prediction difficult mask ventilation (DMV) and difficult laryngoscopy in patients undergoing elective surgery requiring tracheal intubation. An increase in the risk for DMV was correlated to the distance from the hyoid bone to skin surface (DSHB). Hence, the contributors confirmed the relationship between ultrasound assessment of the anterior soft tissues of the neck and difficult laryngoscopy and DMV. Extended availability of the evidence through DSHB and other distances were determined for difficult laryngoscopy and also for DMV.