For example, a communication officer may work with a company's CEO to develop a message of family values. Their external communications may include social media and advertising that shows how the organization is devoted to family values.
Medical Definition of Ventilation. Ventilation: The exchange of air between the lungs and the atmosphere so that oxygen can be exchanged for carbon dioxide in the alveoli (the tiny air sacs in the lungs). Last Editorial Review: 5/13/2016.
Mechanical ventilation may be defined as the use of a mechanical device to provide. ventilator support for patients. There are 2 types of mechanical ventilation: positive and. negative pressure ventilation. Positive pressure ventilation delivers a positive pressure to. inflate the lungs. Expiration is passive.