2. History
When UNIVERSE born?
• 13.8 BILLIONS BIG BANG THEORY
NUCLEAR FUSION
Stars as supernova,oxygen atoms are blown in to
Space
4.5 billions ago solar system
2.5 billons oxygen synthesis started in
Earth by photosyntesis
3.
4. The chemist
• Swedish chemist- Carl Wilhelm Scheele 1772
Termed “Fire air”
• English chemist-Joseph prisetly 1772,1774
• French chemist- Antoine Lavoisier 1778
• Dutch chemist- Martinus van Marum 1785
Failed to realise that he had created ozone
Later christian friedich schobein
Succeed in isolating credited with discovery
5. OXYGEN
• 3rd most abudent element
• Gas & nonmetal
• Atmosphere o2 21%, Seawater 89%
• Rocks – as oxides
• Can be existed as diatoms and triatoms(ozone)
• Forms essential biological molecules like
Carbohydrate,proteins,Nucleic acid and fat
9. Preparation
• Medical
• Can be generated by medical air compressor
Oil free,oil less ,less contamination
Medical grading
Criteria
• Industrial
Chemicals
Potassium nitrates,cholrtaes,barium oxides
Peroxides
Mostly for steel industry
10. • Ozone
• 3o2 = 2O3
• Diatoms,triatoms
• Green house gas effect?
16. INTRODUCTION
• Tissue oxygenation
• Assessment of tissue hypoxia
• Indications for oxygen therapy
• Techniques of oxygen administration
- Oxygen delivery devices
17. Physiological Principals
Oxygen Delivery to the tissues depends on
1.) Supply of oxygen during inspiration
2.) Transfer of oxygen from the Alveoli to the
pulmonary capillaries
3.) Transport of oxygen by blood to the tissue
18.
19.
20.
21.
22. • Hypoxia - reduced oxygen for tissue
respiration
• Anoxia- Complete absence of oxygen in the
tissue
• Hypoxemia- Reduced level of oxygen in Blood
