Exam 6 - Oxygen Flashcards
Oxygen Therapy
A. The administration of oxygen at a concentration greater than that found in the environmental atmosphere.
B. 21% concentration at sea level
C. The goal of oxygen therapy is to provide adequate transport of oxygen in the blood while decreasing the work of breathing and reducing stress on the myocardium.
Alveoli
The site of gas exchange
unlicensed personal
can not initiate oxygen therapy
Hypoxemia
A decrease in the arterial oxygen in the blood.
Hypoxia
A decrease in oxygen to the tissueshock
turniquet
`````pulse increases
Oxygen transport to the tissue is dependent on ……
- ——Cardiac output
- ——Arterial oxygen content
- ——Concentration of hemoglobin
Indications for oxygen therapy
- –Respiratory problems caused by a decrease in partial pressure of arterial oxygen (PaO2) or Arterial oxygen saturation (SaO2)
- –Respiratory problems caused by conditions that increase O2 demands
Oxygen Toxicity
50% O2 for 48 hours or longer can get toxic
Absorption Atelectasis
- —-Collapsed lung
- —-Look for retained secretions—Look for Pain
- —-Turn, cough and deep breath
Suppression of ventilation
- ——CO2 Narcosis - nonCOPD patient - build up of carbon dioxide
- ——Personality changes
- ——Confusion
- ——Coma
Conbustible
- —O2
- —Vaseline
- —Shock
Oxygen
Is the green port
Medical Air
is the yellow port
Nasal Cannula Flow Rate
1 L/min = 24%
6 L/min = 44%
Regular atmosphere is 21%
Nasal Cannula
- –low flow device
- –most commonly used
- –nasal prongs inserted in each nare
- –can be used with humidity to alleviate discomfort
- –easily dislodged
oxygen toxicity
- –high concentrations of oxygen given longer then 48 hours
- –causes decreased surfactant in lungs (surfactant keeps alveoli open)
- –end up with respiratory distress syndrome
- –client may have non cardiac pulmonary edema
- –c/o chest pain, tingling in extremities, SOB, restless, fatigued.
Prevention of Oxygen Toxicity
- –Administer only the prescribed amount of oxygen
- –Monitor PaO2 levels
- –Report if well over 90 % at all times
- –Monitor ABG’s
- –Monitor for s/s of O2 toxicity
- –Decrease amounts of O2 as soon as client is able to tolerate and is prescribed by Dr.