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Ch 10 Respiration V
Oxygen therapy
| Question | Answer |
|---|---|
| Three major issues to consider in supplemental oxygen | Oxygen is a medication, Oxygen can cause harm (stroke or myocardial infarction), oxygen should be ministered based on overall evaluation of patient |
| In respiratory arrest remember too | Ventilate rather than oxygenate |
| Oxygen Cylinder | a cylinder filled with oxygen under pressure. 2,000-2,200 pounds per square inch |
| D Cylinder (Portable) | 350L |
| E Cylinder (Portable) | 625L |
| M Cylinder (Fixed in ambulance) | 3,000 L |
| G Cylinder | 5,300 L |
| H cylinder | 6,900 L |
| Safe residual for an oxygen cylinder is when pressure gauge reads | 200 psi or above |
| Cylinder Constants | D=0.16, E=0.28, M=1.56 G=2.41, H=3.14, K= 3.14 |
| Safety for Oxygen cylinders | Always use pressure gauges, regulator and tubing, always use nonferrous wretches, always used medical grade oxygen, always have cylinders tested every 5 years, never dop a cylinder, never allow smoking around, never use near open flame, never drag or roll |
| Pressure Regulator | a device connected to an oxygen cylinder to reduce cylinder pressure so it's safe for delivery. Working pressure of 30-70 PSI |
| Cylinder large than E size have | valve assembly with threaded outlet |
| Cylinder E size or smaller pressure regulator is | secured to the cylinder valve assembly by a yoke assembly |
| Flowmeter | a valve that indicates the flow of oxygen in liters per min |
| Two Low pressure flowmeters are | Pressure compensated flowmeter, Constant flow selector valve |
| Pressure Compensated Flowmeter | gravity dependent and must be in an upright position, Ball floats according to the amount of gas passing through the tube. recommended for larger cylinders (M, G,H) |
| Constant Flow Selector Valve | no gauge and allows for the adjustment of flow in liters per min (2, 4, 6, 8.. up to 15 L per min). operates at any angle used with portable tanks |
| High pressure flowmeter | Thumper CPR |
| Humidifiers | a device connected to the flowmeter to add moisture to the dry oxygen coming from an oxygen cylinder |
| Humidifiers are no longer in use because | short transport times and infection |
| Humidifier must be kept | clean, water reservoir can become a breeding ground for algae, bacteria, and dangerous fungal organism. always use fresh water in a clean reservoir for each shift |
| Common Hazards of oxygen equipment are | Oxygen used in emergency care is stored under pressure, Oxygen supports combustion, causing fire to burn more quickly, under pressure oxygen and oil do not mix. They come in contact a severe reaction occurs |
| Common Hazards of oxygen therapy are | Oxygen toxicity or air sac collapse, Infant eye damage, Respiratory depression or respiratory arrest, Exacerbation of underlying conditions |
| Nonrebreather Mask | 12-15 L/min, 80-90% of O2 Delivery system of choice for patients with signs of severe hypoxia and those with short of breath, suffering severe injuries or displaying altered mental status. Bag must be inflated before the mask is used. Exhaust Port |
| Nasal Cannula | 1-6 L/min 24-44% of O2 Signs of hypoxia and those short of breath who need a small amount, cannot tolerate a mask |
| Venturi Mask | Varied depending on device up to 15 L /min, 24-60% of O2 A device used to deliver specific concentration of oxygen |
| Partial Rebreather Mask | 9-10 L/min 40-60% of O2. usually not used in EMS. Used at home to treat COPD. used for some patients to preserve the CO levels in their blood. No one way valve allows patient to rebreathe about one-third of exhaled air |
| Tracheostomy Mask | placed over stoma. 8-10 L/min, vary oxygen percentages |
| CPAP | used to preoxygenate patients |
| Blow By technique | hold or have parent hold oxygen tubing mask 2 inches from patient face so oxygen can pass over |
Created by:
Jwbarnett27