Oxygen

Question 1

Classification

Answer 1

Gas

Question 2

Mechanism of Action

Answer 2

Enters body via respiratory system, transported to cells by hemoglobin, required for efficient breakdown of glucose into usable energy

Question 3

Pharmacokinetics

• Onset of action
• Peak Effects
• Duration of Effects
• Half-Life

Answer 3

• Onset of action- immediate
• Peak Effects- < 1 min inhaled
• Duration of Effects- < 2 min inhaled
• Half-Life- N/A

Question 4

Indications/Field Use

Answer 4

• Hypoxia
• Difficulty Breathing
• SpO2- <94%

Question 5

Contraindications

Answer 5

• ROSC post cardiac arrest with SPO2 >94%

- Chest pain, acute MI, suspected cellular injury and death with SPO2> 94%

Question 6

Side Effects/Adverse Reactions

Answer 6

Free Radical formation in the presence of injured tissues, causing secondary cell death

Question 7

Dose

Answer 7

Adult:
      2-6L NC, 12-15L NRB, 15L BVM
      CPAP/Vent: varies by O2 demand to meet cmH2O requirement
Pedi:
      2-6L NC, 12-15L NRB, 15L BVM

Question 8

Precautions

Answer 8

Avoid hyperoxia, high concentration to neonates can cause eye damage

Question 9

Drug-drug interaction

Answer 9

None EMS