IRCT20121010011067N5 IRCT 2021-07-17 Tabriz University of Medical Sciences Evaluation of the quality of ventilation by the mask in three techniques: E-C, Thenar Eminence and X Evaluation of the quality of ventilation by the mask in three techniques: E-C, Thenar Eminence and X 2021-08-06 anticipated 310 Complete https://irct.ir/trial/57420 interventional Randomization: Not randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: In this study, participants will be unaware of the allocation of study groups. N/A Patients need airway. Intervention 1: Group 1: Patients who are ventilated by the E-C technique in which the first and second fingers of the resuscitator in the form of the letter C surround the mask pad and the next three fingers in the form of the letter E, surround the lower jaw (mandible). The RESPIRONICS brand capnogram device and the product of Respironics, Inc. with the specifications of Cosmas Court 2271 and Carlsbad, CA USA 92009 will be used. Intervention 2: Group 2: Patients who are ventilated using the Thenar Eminence technique, in which the tenar muscles and the first finger of the resuscitator surround the mask pad and the next four fingers of the lower jaw. Intervention 3: Group 3: Patients who are ventilated using the X-technique, in which the palm of the resuscitator rests on the front of the pillow and her fingers guide the patient up to the chin. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no more information.