, Author of Cannabis Pharmacy. 1  There are several problems with chewing/dipping cannabis. First, cannabis, in its raw herbal form, can host a wide variety of microbes including e coli and salmonella, both of which can present a health risk.
Oxygenation and ventilation: Once the position and seal are obtained, bagging can commence. The rate of ventilation for an adult is 10-12 breaths per minute or, approximately 1 bag squeeze every 5-6 seconds.4 The bag should be depressed for a full 1-2 seconds and then released.
During expiration as the chest wall recoils Pip increases (less negative). The air coming into the lung is driven by these pressure gradients. Example with arbitrary numbers. Inspiration: intra-alveolar pressure decreases from 0 to -1 by the action of the diaphragm and external intercostal muscles. Air will flow in until the intra-alveolar pressure returns to 0.