Questions and Answers
Irregular respirations characterized by an increasing rate and depth of breathing followed by periods of apnea are called:
Cheyne-Stokes respirations
Oxygen toxicity is a condition in which:
cellular tissue damage occurs from excessive oxygen levels in the blood
Gas exchange in the lungs is facilitated by:
adequate amounts of surfactant
Which of the following oxygen flowmeters is NOT affected by gravity and can be used in any position when attached to an oxygen cylinder?
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Which of the following structures is NOT found in the upper airway?
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Which of the following is a late sign of hypoxia?
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The diaphragm is innervated by the __________ nerve, which allows it to contract.
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The pressure of gas in a full cylinder of oxygen is approximately _________ pounds/sq in (psi).
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With a good mask-to-face seal and an oxygen flow rate of 15 L/min, the nonrebreathing mask is capable of delivering up to _____% inspired oxygen.
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Which of the following organs or tissues can survive the longest without oxygen?
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An oxygen cylinder should be taken out of service and refilled when the pressure is less than:
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Which of the following factors will cause a reduction in minute volume in an adult?
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At a flow rate of 6 L/min a nasal cannula can deliver an approximate oxygen concentration of up to:
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Hypoxic drive is influenced by:
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Structures of the lower airway include all of the following except:
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Study Notes
Respiratory Definitions
- Cheyne-Stokes respirations involve irregular breathing patterns with alternating periods of increased rate/depth and apnea.
- Oxygen toxicity refers to cellular damage due to excessive oxygen levels in the bloodstream.
- Adequate surfactant levels are crucial for effective gas exchange in the lungs.
Oxygen Flowmeters
- Bourdon-gauge flowmeter is not gravity-dependent and functions in any position when connected to an oxygen cylinder.
Airway Structures
- The bronchus is not part of the upper airway; it is considered part of the lower airway.
- Key components of the upper airway include the oropharynx, pharynx, and larynx.
Signs of Hypoxia
- Cyanosis is a late sign of hypoxia, indicating severe oxygen deprivation.
Respiratory System Anatomy & Physiology
- The diaphragm is controlled by the phrenic nerve, essential for its contraction during breathing.
- A full oxygen cylinder typically contains around 2,000 psi of gas pressure.
Oxygen Delivery Devices
- A properly fitted nonrebreathing mask at 15 L/min can deliver approximately 90% inspired oxygen.
- A nasal cannula at a flow rate of 6 L/min provides an oxygen concentration close to 44%.
Oxygen Requirements and Breathing Mechanics
- Muscle tissue can endure the longest without oxygen compared to other organs such as the liver, kidneys, or heart.
- Oxygen cylinders should be refilled when pressure drops below 500 psi.
- Shallow breathing reduces minute volume in adults, hindering effective gas exchange.
Hypoxic Drive
- The hypoxic drive mechanism in breathing is primarily influenced by low levels of blood oxygen rather than carbon dioxide levels, which typically dictate respiration in healthy individuals.
Structures of the Lower Airway
- The epiglottis is not considered a part of the lower airway; the lower airway consists of bronchioles, alveoli, and trachea.
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Description
Test your knowledge on airway management concepts with these flashcards from EMT Chapter 11. Learn about key terms like Cheyne-Stokes respirations, oxygen toxicity, and the importance of gas exchange in the lungs. This quiz is essential for any aspiring EMT or healthcare professional.
