EcoAnaesthesia Facemask Versus Standard Facemask During Anesthesia Induction

Inclusion Criteria:

   - ASA physical status class 1-2

   - Undergoing elective surgery

   - Aged between 18 and 75 years

Exclusion Criteria:

   - Severe acute or chronic lung disease requiring oxygen-therapy;

   - Hiatus hernia with gastro-esophageal reflux or other esophageal or gastric
   abnormalities that require a rapid sequence induction;

   - Food intake within the last 6 hours or clear fluid intake within 2 hours prior to
   surgery;

   - Ischemic or congenital heart disease;

   - Pregnancy (confirmed by a pregnancy test);

   - Patient is scheduled for regional anesthesia and denies conductance of general
   anesthesia during the surgical procedure;

   - Known difficult intubation in the past.

   - Difficult Mask Ventilation. Patients having any two of the criteria listed below will
   be Categorized as "Difficult Mask Ventilation (DMV)" (5,13,14) and will be excluded
   from enrollment. All others will be classified as "Normal." Age > 55 BMI > 26 kg/m2
   Lack of teeth Presence of beard History of snoring Limited mandibular protrusion