, 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.
The increased volume of the thoracic cavity causes air to rush into the lungs. Exhalation occurs when the diaphragm and rib muscles relax, reducing the volume of the thoracic cavity. The expansion and contraction of the thoracic cavity occurs between 12 and 20 times each minute in adults.