Flashcards in Airway Management And Ventilation Deck (138)
What is the the anatomical space between the base of the tongue and the epiglottis? It also is an important landmark for endotracheal intubation.
What is the sellick maneuver?
Compressing the cricoid cartilage that occludes the esophagus resulting in reduced gastric distention during ventilation and placement of an endotracheal tube.
What is the total lung capacity in an average adult male?
What is the normal tidal volume in an adult male?
What is the normal tidal volume for pediatric patients?
What is alveolar air?
The amount of gas that reaches the alveoli with each breath.
What is the formula for alveolar air?
Tidal volume➖dead space volume
It is approximately 350mL
What are the two phases of ventilation?
What is the nervous system mechanism that terminates inhalation and prevents lung over-expansion?
What is external (pulmonary) respiration?
Exchange of gases between the lungs and the blood cells in the pulmonary capillaries
What is internal (cellular) respiration?
Exchange of gases between blood cells and tissues
What is a minute volume?
The amount of air moved in and out of the lungs in one minute
(Tidal volume ➖ dead space volume)✖️respiratory rate
The amount of air that can be forced from the lungs in a single forced exhalation is called what?
Functional reserve capacity
What is residual volume?
The air that remains after maximal expiration
What is the residual volume of an average male?
What is inspiratory reserve volume?
The amount of air you can inhale after a normal inhalation
What are the two motor nerves of respiration?
What do the phrenic nerves do?
Innervates the diaphragm
What do the intercostal nerves do?
Innervates the external intercostal muscles (muscles between the ribs)
What is the percentage of oxygen that makes up hemoglobin?
What is the remaining oxygen that is dissolved in plasma called?
Partial pressure of oxygen (PaO2 , PO2)
What is a byproduct of cellular respiration?
What are three conditions that decrease the surface area of the alveoli?
What is intrapulmonary shunting?
If the alveoli are not functional, carbon dioxide and oxygen will not be allowed to diffuse. Therefore the blood will bypass the alveoli and will return to the left side of the heart and in an unoxygenated state
What is Dalton's law?
The total pressure exerted equals the sum of the partial pressures of the components of that gas, or the pressure exerted by a specific atmospheric gas
What is the total pressure of air at sea level?
About 760 mm Hg (760 torr)
What connects the medulla and the respiratory muscles?
The vagus nerve
What three things does the medullary respiratory centers control?
What is the secondary control center of respiration if the medulla fails to initiate respiration?
The apneustic center of the pons