Fig. 1. Illustration of the position of the face mask. The standard face mask ventilation consists of placing the thumb and index finger on the body of the mask, whereas the other fingers move the mandible toward the upper teeth and extend the head. The continuous line represents the plane between the nose and the mandible. The arrow  represents air leaks. Only one hand is pictured, and the oropharyngeal airway has been removed to see the position of the mask.