Oxygen delivering device presentation find
- 2. Goal of oxygen therapy is to achieve adequate tissue oxygenation Inadequate oxygenation can lead to localised vasodilation, pulmonary vasoconstriction, metabolic acidosis, tissue necrosis, & brain injury
- 3. Indications ● In documented or suspected hypoxemia ● With PaO2 <60mmHg & SpO2<94% in room air ● Pulse oximetry is used to detect hypoxemia ● If not available - look for clinical signs
- 4. Clinical signs suggestive Of hypoxemia ● Central Cyanosis ● Nasal flaring ● Grunting ● Inability to drink or feed due to resp distress ● Depressed mental state and sensorium - drowsy and lethargic ● Severe lower chest wall restrictions ● Resp rate ≥ 70/ min ● Head nodding ( synchronized with respiration) ● Other signs like seizures, coma, acute neurological problems,
- 5. Modes of administration of oxygen Variable performance device Or low flow system ● Provide only a fraction of patient’s inspiratory flow need or tidal volume rest is met by dilution with room air ● Oxygen flow rate - <10L/min Fixed performance device Or high flow system ● Provide all the inspiratory flow requirements & tidal volume ● Can deliver either high or low FiO2 ● Oxygen flow rate- >15L/min
- 6. ● Rate of oxygen flow is less than patients inspiratory flow ● Results in mixing of O2 with room air ● Deliver variable FiO2 (23-50%) Suitable for Patients requiring low to moderate FiO2(30-60%) Having stable breathing pattern ● Delivers FiO2 - 100% ● delivers constant FiO2 ● Used in emergency settings Does not affected by patients Inspiratory pattern Suitable for patients requiring consistent FiO2 >70% Having varying breathing pattern
- 8. Variable performance device ● Nasal prongs/ cannula Ends in 2 short tapered tubes , lie within the nostrils Humidification not required Avg FiO2 provided with 1 L/ min is 24% With every increase of 1 L/min of O2 upto 4L/min FiO2 rises by 4% Oxygen flow rate - for neonates 0.5-1L/min , infants 1-2 L/ min, older children-1-4L/min High flow cause irritation and dryness of nasopharynx
- 10. SIMPLE OXYGEN MASK ● Provide 35-60% FiO2 ● At oxygen flow of 6-10L/ min ● With each L increase in oxygen FiO2 increase approximately by 10% ● Flow <5 L/min cause CO2 retention
- 12. Partial rebreathing MASK ● Provide 35-70% FiO2 at oxygen flow rate of 6-15L/ min ● Have extra reservoir and side ports ● Oxygen flow should be maintained such tht only ⅓ rd of reservoir get empty during inspiration. ● During expiration, first 1/3rd of exhaled air enters the reservoir
- 14. Non rebreathing mask ● Provide FiO2 up to 80-100% at OFR of 8-15 L/ min ● It has one way valve between the mask & reservoir, also over the exhalation port ● During inspiration port valve close & reservoir valve open ● During expiration, port valves open and reservoir valve close
- 16. Nosopharyngeal catheters ● Passed to pharynx just below the level of uvula ● Better oxygenation with a lower oxygen flow than nasal canula ● Because FiO2 in trachea is relatevly high with positive End Expiratory pressure(PEEP) production
- 18. Fixed performance device Oxygen hoods, incubators and tents noninvasive methods Minimal risk of airway obstruction by mucus or of gastric distention ● Humidification not necessary ● CO2 toxicity can occur if flow of oxygen inadequate ● CO2 retained if hood is used w/o tight seal around infronts neck ● Flow rate of 2-3 L / kg/min necessary to avoid rebreathing of CO2 with the hood
- 19. ● All these require high OFR to achieve adequate concentration of Oxygen and avoid CO2 accumulation ● Oxygen hood interfere with feeding ● Expensive
- 21. Oxygen tent
- 22. Face tent
- 23. Venturi mask ● It combines O2 with room air to give high flow oxygen at fixed and constant FiO2 ● Color coded jets are attached to the mask to deliver required amount of oxygen ● It can deliver FiO2 ranging from 24-50% ● Recommend flow rate is 12-15 L/ min
- 25. Thank you