Shape of the waveform should normally be a rectangle with rounded corners.
Ventilating too slowly will allow extra CO 2 to build up, resulting in higher readings. Ventilating too quickly won’t let enough CO 2 build up in the alveoli, resulting in lower EtCO 2 readings. Children should be ventilated at a rate of 15-30 bpm 25-50 bpm for infants. Rate of ventilation should be 12-20 breaths per minute (bpm) for adults if the patient is breathing on their own and 10-12 bpm if you’re ventilating them. Quantity target EtCO 2 value should be 35-45 mmHg. One of the great things about EtCO 2 is that although ventilation rates vary based on age, normal readings for quantity, shape and trends are the same for men and women of all age groups, making them easy to remember. In this case, normal means what we find in a healthy person with no metabolism, ventilation or perfusion problems. Proper means that you should know the normal readings for quantity, rate, shape and trending of EtCO 2. To evaluate the metabolism, ventilation and perfusion of a patient through EtCO 2 waveform monitoring you need to read the PQRST: proper, quantity, rate, shape and trend. End-tidal carbon dioxide (EtCO 2) waveform monitoring allows you to measure all three simultaneously, making it the most important vital sign you use. Carbon dioxide (CO 2) is a product of metabolism transported via perfusion and expelled through ventilation.
Capnography is a great way to confirm airway device placement and monitor ventilation, but it can do so much more.
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