Medical Gas Therapy: Oxygen Therapy and Prescription

Who is best prepared to recommend the correct dosage and delivery method for oxygen therapy?

Respiratory therapists (correct)
Physicians
Licensed practitioners
Nurses

What is the primary goal of oxygen therapy?

To correct acute arterial hypoxemia
To reduce cognitive impairment associated with COPD
To relieve symptoms of chronic hypoxemia
To maintain adequate tissue oxygenation while minimizing cardiopulmonary workload (correct)

What is the benefit of long-term oxygen therapy (LTOT) in patients with COPD?

It corrects acute arterial hypoxemia
It reduces cognitive impairment (correct)
It relieves symptoms of chronic hypoxemia
It increases cardiopulmonary workload

What is the result of correcting hypoxemia on PAO2 and PaO2?

Increased PAO2, increased PaO2 (B) Signup and view all the answers

What is the clinical objective of oxygen therapy in correcting hypoxemia?

To correct documented or suspected acute arterial hypoxemia (C) Signup and view all the answers

Who can administer oxygen therapy in emergency situations?

Licensed practitioners (A) Signup and view all the answers

What is the significance of correcting hypoxemia in oxygen therapy?

It is the most tangible and easiest to document objective (D) Signup and view all the answers

What is the role of a physician in oxygen therapy?

To order oxygen therapy as a standing order or clinical protocol (D) Signup and view all the answers

What is the primary effect of intrapulmonary shunt on the oxygenation of blood?

Perfusion of alveoli that are poorly ventilated or poorly oxygenated (C) Signup and view all the answers

What is the difference between hypoxemia and hypoxia?

Hypoxemia is a lack of oxygen in the blood, while hypoxia is a lack of oxygen in the tissues (B) Signup and view all the answers

What is the formula for calculating oxygen delivery (DO2) in the body?

DO2 = cardiac output × CaO2 (A) Signup and view all the answers

What is the consequence of uncorrected hypoxemia?

Tissue ischemia and cell death (D) Signup and view all the answers

What is the result of a right to left shunt?

Deoxygenated blood from the right side of the heart mixes with oxygenated blood in the left side (C) Signup and view all the answers

What is the effect of extrapulmonary shunt on oxygenation of the blood?

Deoxygenated blood from the right ventricle completely bypasses the lung and enters the left atrium (C) Signup and view all the answers

Why is it important for RCPs to understand the difference between hypoxemia and hypoxia?

So they can provide accurate patient education and prevent confusion (C) Signup and view all the answers

What is the units of measurement for Fractional Inspired Oxygen Concentration (FIO2)?

Number from 0 to 1 (D) Signup and view all the answers

What is the partial pressure of O2 dissolved in the arterial plasma?

PaO2 (A) Signup and view all the answers

What is the effect of hypoxia on the mitochondria?

Prevents ATP production aerobically (C) Signup and view all the answers

What is the cause of myocardial ischemia?

Both reduced blood flow and reduced blood oxygen (B) Signup and view all the answers

What is refractory hypoxemia?

Hypoxemia that does not respond to O2 administration (C) Signup and view all the answers

What is the effect of a left to right shunt?

Reduces oxygenated blood flow to the aorta (B) Signup and view all the answers

What is the result of inadequate oxygen at the tissue cell level?

Cell death (D) Signup and view all the answers