Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Oxygen therapy

51,203 views

Published on

Published in: Health & Medicine, Business
  • Uterine Fibroids Cure, Discover How To Reverse And Rid, All Uterine Fibroids In 2 Months ♣♣♣ https://tinyurl.com/rbqozdv
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • How I Cured My Uterine Fibroids? Reverse And Eliminate Uterine Fibroids, Safe & Natural With Fast Results.. ➤➤ https://tinyurl.com/rbqozdv
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • The Scrambler Unlock Her Legs | 95% Off by Bobby Rio-Rob Judge?  http://ishbv.com/unlockher/pdf
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • How can I improve my memory and concentration? How can I improve my memory for studying?♣♣♣ https://bit.ly/2GEWG9T
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Hi Dr. Reddy, would it be ok for me to use some pictures from your slides for a presentation? Thank You!
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here

Oxygen therapy

  1. 1. OXYGEN THERAPY: PRINCIPLES & PRACTICE Dr.NARASIMHA REDDY PROFFESSOR &H.O.D DEPT.OF ANESTHESIOLOGY
  2. 2. <ul><li>Oxygen is also like a drug. </li></ul><ul><li>It must be used meticulously & deligently. </li></ul><ul><li>If abused it can cause complications. </li></ul>
  3. 3. <ul><li>FEW IMPORTANT QUESTIONS : </li></ul><ul><li>1.What are the indications for O2? </li></ul><ul><li>2.How to administer optimally? </li></ul><ul><li>3.What are the hazards? </li></ul>
  4. 4. <ul><li>Enrichment of inspired gases with O2 . </li></ul><ul><li>The major reason for O2 therapy is hypoxia. </li></ul><ul><li>Hypoxia is defiency of O2 at tissue levels. </li></ul><ul><li>Hypoxemia refers to reduced O2 tension in arterial blood. </li></ul>
  5. 5. TYPES OF HYPOXIA <ul><li>1.HYPOXIC HYPOXIA : </li></ul><ul><li>Dec. in O2 saturation of Hb like alveolar hypoventilation& low FiO2. </li></ul><ul><li>O2 therapy fruitful results. </li></ul>
  6. 6. <ul><li>2.STAGNANT HYPOXIA : </li></ul><ul><li>Due to low cardiac output states & vascular occlusion. </li></ul><ul><li>O2 therapy helps to less extent. </li></ul>
  7. 7. <ul><li>3.ANEMIC HYPOXIA : </li></ul><ul><li>O2 carrying capacity is reduced like anemia,hemodilution,CO poisoning. </li></ul><ul><li>O2 therapy useful to some extent. </li></ul>
  8. 8. <ul><li>4.HISTOTOXIC HYPOXIA : </li></ul><ul><li>Due to cyanide poisoning. </li></ul><ul><li>Cells cannot utilise O2. </li></ul><ul><li>O2 therapy least likely useful. </li></ul>
  9. 9. INDICATIONS FOR O2 THERAPY <ul><li>1.Hypoxia – when PaO2 comes down to 60mmhg. </li></ul><ul><li>2.Normoxic hypoxia – like low cardiac output states,M.I,anemia,hemodilution,CO poisoning,acute hypermetabolic states. </li></ul><ul><li>3.Trapped gases – like obstruction,pneumo encephalus. </li></ul><ul><li>4.Special situations – like anesthesia. </li></ul>
  10. 10. GUIDELINES FOR O2 THERAPY <ul><li>1.To alleviate hypoxemia. </li></ul><ul><li>2.To alleviate endorgan dysfunction due to hypoxia. </li></ul><ul><li>3.To avoid deleterious effects of O3 therapy. </li></ul>
  11. 11. <ul><li>O2 DELIVERY SYSTEMS : </li></ul><ul><li>1.Low flow or variable performance systems. </li></ul><ul><li>2.High flow fixed performance systems. </li></ul>
  12. 12. <ul><li>LOW FLOW SYSTEMS : </li></ul><ul><li>1.Nasal catheters . </li></ul><ul><li>8-14 G ,passed through into oropharynx. </li></ul><ul><li>Reservoir of O2 builds up in pharynx. </li></ul>
  13. 13. <ul><li>2.Nasal prongs : </li></ul><ul><li>The prongs protrude 1cm into nares. </li></ul><ul><li>Well tolerated. </li></ul><ul><li>Less interference in day to day activities. </li></ul><ul><li>Useless in mouth breathers. </li></ul><ul><li>No reservoir system. </li></ul><ul><li>FiO2 unpredictable. </li></ul>
  14. 14. <ul><li>3.Simple O2 masks : </li></ul><ul><li>Covers the nose & mouth. </li></ul><ul><li>4-6 lits/min. </li></ul><ul><li>0.4 -0.6 FiO2 </li></ul><ul><li>Feeling of suffocation. </li></ul><ul><li>Interference with daily activities. </li></ul><ul><li>FiO2 unpredictable. </li></ul><ul><li>Displacement at nights. </li></ul>
  15. 15. <ul><li>4.Mask with reservoir bags : </li></ul><ul><li>-Polymask with 2 chambers. </li></ul><ul><li>-High FiOP2 with 5-6 lits of O2. </li></ul>
  16. 16. <ul><li>HIGH FLOW SYSTEMS : </li></ul><ul><li>- Total flow is high with or without entrainment. </li></ul><ul><li>VENTURI MASKS : </li></ul><ul><li>Works on Bernoulli principle. </li></ul><ul><li>Can deliver O2 at accurate concs. </li></ul>
  17. 17. <ul><li>O2 hood : </li></ul><ul><li>Used in bed bound infants not intubated. </li></ul><ul><li>Made of plexi glass. </li></ul><ul><li>Humidified O2 3 times M.V. </li></ul>
  18. 18. <ul><li>O2 tent : </li></ul><ul><li>Used in pediatric practise. </li></ul><ul><li>10-12 lits/min. </li></ul><ul><li>Fire accidents. </li></ul>
  19. 19. <ul><li>CYLLINDERS: </li></ul>
  20. 20. <ul><li>HOME O2 CONCENTRATOR </li></ul>
  21. 21. <ul><li>JET VENTILATION : </li></ul><ul><li>High frequency oscillation. </li></ul>
  22. 22. HAZARDS OF O2 THERAPY <ul><li>1.Drying of mucous membrane. </li></ul><ul><li>2.Depression of ventilation in COPD. </li></ul><ul><li>3.Reversal of compensatory hypoxic vasoconstriction. </li></ul><ul><li>4.Atelectasis due to absorption collapse. </li></ul><ul><li>5.O2 toxicity. </li></ul>
  23. 23. OXYGEN TOXICITY <ul><li>1.Pulmonary oxygen toxicity (Lorrain-Smith effect): </li></ul><ul><li>100%O2 given for 12 hours or more. </li></ul><ul><li>80% O2 for more than 24hrs. </li></ul><ul><li>60%O2 more than 36hrs. </li></ul><ul><li>Symptoms : substernal pain,irresistable cough,dyspnoea,V.C dec.,compliance dec.,pulmonary interstitial edema leading to fibrosis. </li></ul>
  24. 24. <ul><li>2.Retrolental fibroplasia : </li></ul><ul><li>Occurs when PaO2 more than 80mmhg for more than 3 hrs in new born. </li></ul><ul><li>Very premature babies are more susceptible. </li></ul><ul><li>O2 saturation must be around 90-92 %. </li></ul>
  25. 25. <ul><li>3.C.N.S O2 toxicity (Paul-Bert effect ): </li></ul><ul><li>O2 is given in hyperbaric chambers. </li></ul>
  26. 26. THANK U.

×