RES 110 Test O2 Therapy Exam UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

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%.