Gottlieb M, et al. - Researchers examined the influence of endotracheal tube (ETT) twisting during the standard grayscale technique on the accuracy of intubation confirmation by ultrasound. In this study, two different fresh cadavers were used. The cadavers were randomized to either tracheal or esophageal intubation during each trial. They performed 540 assessments with equal numbers of tracheal and esophageal intubations. The accuracy of ultrasound was 97.8% using the static technique and the accuracy was 100% using the ETT twisting technique. These findings suggest that the two groups had no statistically significant difference in the accuracy of ETT location identification. However, a statistically significant improvement in the time to identification and sonographer confidence was noted when the ETT twisting technique was utilized.