Chapter 16- Carbon Dioxide Retention andd Hypoxic Drive Flashcards
You will encounter patients that have elevated levels of carbon dioxide in their __________
arterial blood
This level can rise for many reasons.
For example:
Exhalation process may be impaired by lung disease.
The body may also produce too much carbon dioxide, either _______ or _______ depending on the disease or abnormality
temporarily or chronically
If, for a period of years, arterial carbon dioxide levels rise to an abnormally high level and remain there, then the respiratory centers _____
in the brain which sense CO2 and control breathing, may work less efficiently
The failure of respiratory centers to respond to a rise in arterial levels of carbon dioxide is due to:
chronic carbon dioxide retention
Normally, the brain senses the levels of carbon dioxide based on
PH in the blood and cerebrospinal fluid
When carbon dioxide levels become elevated, the respiratory centers in the brain will adjust the
rate and depth of ventilation (movement of air in and out of the lungs)
However patients with chronic lung disease have difficulty eliminating carbon dioxide through exhalation
Therefore, they always have _____
high levels of carbon dioxide
The brain (of people with lung disease) gradually accommodates high levels of CO2 and then uses a backup system to control breathing based ______
low levels of oxygen rather than high levels of carbon dioxide
This condition is known as:
Hypoxic Drive
Hypoxic drive is frequently found in end-stage ________
chronic obstructive pulmonary disease (COPD)
Use caution when providing high concentrations of oxygen on a long-term basis to patients with chronic lung disease, but never _______
withold oxygen therapy from a patient who needs it
_______ patients also have greater difficulties with the exchange of carbon dioxide and oxygen
Geriatric
