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Medical Gas Therapy

NECC_Medical Gas Therapy - 09

QuestionAnswer
Name three clinical objectives of oxygen therapy: 1) To correct acute hypoxemia, 2) To decrease chronic hypoxemia symptoms, and 3) To decrease cardiopulmonary workload. Egan's, page 868
How does oxygen therapy go about correcting hypoxemia? By raising the alveolar and blood levels of oxygen. Egan's, page 868
Name four patient manifestations of hypoxemia: Tachypnea, tachycardia, cyanosis, and an overall distressed appearance. Egan's, page 868
Which side of the heart is affected by chronic pulmonary hypertension and pulmonary vasoconstriction? The right side of the heart. Egan's, page 868
What is another name for failure of the right side of the heart? Cor pulmonale. Egan's, page 868
Which two primary areas of the body are affected by oxygen toxicity? The lungs and the central nervous system. Egan's, page 870
What two factors determine the harmful effects of oxygen? Exposure time and the partial pressure of oxygen. Egan's, page 870
What type of cells are destroyed by oxygen toxicity? Type I alveolar cells. Egan's, page 870
What type of cells proliferate after type I alveolar cells are destroyed by oxygen toxicity? Type II alveolar cells. Egan's, page 870
Oxygen toxicity is caused by the overproduction of what? Oxygen free-radicals. Egan's, page 871
As a general rule to avoid oxygen toxicity, patient exposure to 100% oxygen should be limited to how many hours? Whenever possible, limit this exposure to less than twenty-four hours. Egan's, page 871
Name five hazards of supplemental oxygen therapy: Oxygen toxicity, depression of ventilation, retinopathy of prematurity, absorption atelectasis, and fire hazard. Egan's, pages 870 through 872
What is the primary reason that some COPD patients hypoventilate when given oxygen? The most likely cause is suppression of hypoxic drive. Egan's, page 871
Supplemental oxygen can cause what eye condition in some premature and low birth weight infants? Retinopathy of prematurity. Egan's, page 871
A significant risk of absorption atelectasis exists at what oxygen concentration? Oxygen concentrations above 50%. Egan's, page 872
What are the three basic design categories (systems) of oxygen delivery devices? Low-flow systems, high-flow systems, and reservoir systems. Egan's, page 872
Name three low-flow oxygen delivery devices: Tha nasal cannula, the nasal catheter, and the transtracheal catheter. Egan's, pages 873 and 876
What is the oxygen concentration delivery range of typical air entrainment masks (expressed an a percentage)? Air entrainment masks can generally deliver oxygen concentrations from 24% to 50%. Egan's, page 884
For each liter per minute, what is the percentage increase in oxygen concentration delivered to a patient who has a normal depth and rate of breathing? There is an appromimate 4% increase in oxygen concentration for each liter per minute of flow. Egan's, page 877
What is the best method for administration of controlled oxygen therapy to infants? The best device is an oxygen hood, or Oxyhood.
Created by: mpmcgravey