Chapter 25: Concepts of Care for Patients Requiring Oxygen Therapy or Tracheostomy Flashcards
Exam 2 (Dr. Lyons) (295 cards)
places in the airway where air flows but the structures are too thick for gas exchange
anatomic dead space
increased partial pressure of arterial carbon dioxide (PaCO2) levels
hypercarbia
low levels of oxygen in the blood
hypoxemia
decreased tissue oxygenation
hypoxia
a machine that removes nitrogen from rooom air, increasing oxygen levels to more than 90%
oxygen concentrator (oxygen extractor)
the trachial stoma (opening) in the neck that results from the tracheotomy
tracheostomy
the surgical incision into the trachea to create an airway to help maintain gas exchange
tracheotomy
the 2 main respiratory problems
airway issue and gas exchange issues
provides instant information about how effectively CO2 is eliminated by the pulmonary system, how effectively it is transported through the vascular system, and how effectively CO2 is produced by cellular metabolism. ;is measured near the end of exhalation
;Also known as end-tidal CO2 monitoring.
capnography
How are oxygen delivery systems classified?
- low-flow
- high-flow
The choice of delivery system depends on several factors, what are they?
- the required oxygen concentration
- the achievable oxygen concentration with a specific delivery system
- the need to maintain and control the oxygen concentration
- patient comfort
- the use of humidity
- patient mobility.
Oxygen delivery systems are categorized based on what?
the rate of oxygen delivery
simple facemasks deliver what percentage of oxygen concentration
40- 60%
partial rebreather masks offer what concentration of oxygen?
60- 75%
nonrebreather masks provide what percentage of oxygen concentration?
> 90%
Numerous respiratory and cardiac issues, whether acute or chronic, have the potential to do what to gas exchange?
impair gas exchange
The use of what can enhance proper gas exchange and tissue perfusion?
oxygen therapy (with or without tracheostomy)
What conditions are often associated with respiratory and cardiac issues?
hypoxemia and hypoxia
What are some factors that may necessitate oxygen therapy?
fever, sepsis, anemia
How does anemia, sepsis and fever affect oxygenation?
either increase the demand for oxygen or decrease the blood’s capacity to carry oxygen
How should oxygen therapy be administered?
at the lowest possible fraction of inspired oxygen (FiO2) that maintains an acceptable blood oxygen level
While oxygen therapy can improve the partial pressure of arterial oxygen (PaO2), it does not do what?
address the underlying cause of the issue
What is the gold standard for assessing the need for and evaluatng the effectiveness of oxygen therapy?
arterial blood gas analysis
What noninvasive monitoring methods are used to detemine oxygen requirements?
pulse oximetry and capnography