1. Ventilation
Answer
Inspiration and Expiration through the lungs
-Determined by ... Compliance (stretchability of the lungs), Airway Resistance (ob- struction to
airflow), accessory muscles (Intercostal spaces, diaphragm, etc), and force of exhalation
2. What stimulates inspiration?
Answer
Increased CO2 in the arterial blood (PaCO2)
-Adequate hemoglobin to carry O2
-Adequate Cardiac output to transport blood to body tissues
9. Anemia
Answer
A condition in which the blood is deficient in red blood cells, in hemoglo- bin, or in total volume
(alters perfusion)
10. Oxygen Transport is affected by...
Answer
-Amount of O2 entering lungs (ventilation)
-Pulmonary circuit
-Adequacy of diffusion (gas exchange)
-Amount of hemoglobin to carry O2
-Cardiac output to transport blood to body tissues
-Peripheral circulation
11. Hypoxia
Answer
Inadequate O2 available to cells (problem with ventilation, diffusion, or perfusion)
*Acute v. Chronic*
12. Acute hypoxia signs and symptoms
Answer
•Dyspnea (trouble breathing)
13. Chronic Hypoxia signs and symptoms
Answer
•Effects of long-term oxygen deprivation seen in ALL body systems
• Clubbing of fingers and toes
• Weakness (chronic lack of O2)
• Muscle pain (lack of O2 in muscles)
• Decreased urinary output
• Constipation
• Anorexia
• Headache
• Chest pain
• Altered thought processes
14. A patient who has difficulty breathing, increased respiratory and pulse rates, and pale skin
with some cyanosis may be suffering from which of the following?
A) hyperventilation
B) hypoxia
C) perfusion
D) atelectasis
Answer
(B) Hypoxia
15. Factors affecting Oxygenation
Answer
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