A Prospective Comparative Study of Laryngeal Glottic View Using the Vie Scope^® versus Standard Macintosh Laryngoscope in Morbidly Obese Patients.

"Disclosure Professor Tomasz Gaszynski reports personal fees from Adroit Surgical LLC, outside the submitted work. The authors report no other conflicts of interest in this work."

"Adroit Surgical company provided complimentary Vie Scope® devices free of charge."

"The study protocol was approved by the Medical University of Lodz Ethics Committee (Protocol number: RNN/49/21/KB, Chairperson: Professor Jozef Drzewoski, February 9, 2021). The study was registered in ClinicalTrials.gov: NCT05502120. The study complies with the Declaration of Helsinki. The participants were fully informed before providing their consent for participation in this research. Study period was from March 2021 to October 2021. In total, 60 morbidly obese (BMI >40 kg/m−2) patients scheduled for bariatric surgery were included in the study after receiving written consent. Patients with predicted difficult laryngoscopy were excluded from the study: limited mouth opening <3 cm, Mallampati grade >3, neck circumference >50 cm, and thyromental distance <6 cm."