RES 110 Test O2 Therapy Exam UPDATED
ACTUAL QUESTIONS AND CORRECT
ANSWERS
What are the 3 goals of oxygen therapy? - CORRECT ANSWER Treat hypoxemia, ↓
work of breathing, ↓ myocardial work.
What is the definition of hypoxemia? - CORRECT ANSWER Low oxygen in arterial
blood
What are clinical signs of hypoxemia? - CORRECT ANSWER Tachypnea, Dyspnea,
cyanosis, headache, mental changes, slight hyperventilation
What effects does hypoxemia have on the circulatory system? - CORRECT
ANSWER Peripheral vasodilation, pulmonary vasoconstriction, tachycardia.
What is cerebral hypoxia and what are symptoms? - CORRECT ANSWER Lack of O₂
to the brain → confusion, lethargy, agitation, disorientation.
What is tissue hypoxia? - CORRECT ANSWER Inadequate oxygen at the tissue level.
What is hypoxemic hypoxia? Give causes. - CORRECT ANSWER Low O₂ in the
blood → high altitude, diffusion defects.
What is histotoxic hypoxia? Causes? - CORRECT ANSWER Tissues unable to use
oxygen → cyanide poisoning, alcohol poisoning.
What is stagnant hypoxia? Causes? - CORRECT ANSWER Poor circulation → shock,
heart failure.
What is anemic hypoxia? Causes? - CORRECT ANSWER Low oxygen-carrying
capacity → anemia, blood loss, ↓ hemoglobin, CO poisoning.
Name hazards of O₂ therapy. - CORRECT ANSWER Fire, absorption atelectasis, O₂
toxicity, ROP/RLF, respiratory depression.
What are symptoms of oxygen toxicity? - CORRECT ANSWER Nausea, vomiting,
substernal pain, chest tightness, hypoxemia, tachypnea, ↓ lung compliance.
Fio₂ should be kept below what to avoid toxicity? - CORRECT ANSWER < 60%.
ACTUAL QUESTIONS AND CORRECT
ANSWERS
What are the 3 goals of oxygen therapy? - CORRECT ANSWER Treat hypoxemia, ↓
work of breathing, ↓ myocardial work.
What is the definition of hypoxemia? - CORRECT ANSWER Low oxygen in arterial
blood
What are clinical signs of hypoxemia? - CORRECT ANSWER Tachypnea, Dyspnea,
cyanosis, headache, mental changes, slight hyperventilation
What effects does hypoxemia have on the circulatory system? - CORRECT
ANSWER Peripheral vasodilation, pulmonary vasoconstriction, tachycardia.
What is cerebral hypoxia and what are symptoms? - CORRECT ANSWER Lack of O₂
to the brain → confusion, lethargy, agitation, disorientation.
What is tissue hypoxia? - CORRECT ANSWER Inadequate oxygen at the tissue level.
What is hypoxemic hypoxia? Give causes. - CORRECT ANSWER Low O₂ in the
blood → high altitude, diffusion defects.
What is histotoxic hypoxia? Causes? - CORRECT ANSWER Tissues unable to use
oxygen → cyanide poisoning, alcohol poisoning.
What is stagnant hypoxia? Causes? - CORRECT ANSWER Poor circulation → shock,
heart failure.
What is anemic hypoxia? Causes? - CORRECT ANSWER Low oxygen-carrying
capacity → anemia, blood loss, ↓ hemoglobin, CO poisoning.
Name hazards of O₂ therapy. - CORRECT ANSWER Fire, absorption atelectasis, O₂
toxicity, ROP/RLF, respiratory depression.
What are symptoms of oxygen toxicity? - CORRECT ANSWER Nausea, vomiting,
substernal pain, chest tightness, hypoxemia, tachypnea, ↓ lung compliance.
Fio₂ should be kept below what to avoid toxicity? - CORRECT ANSWER < 60%.
