Refer to Design Step 1 for introductory information about this design example. Additional information is presented about the design assumptions, methodology, and criteria for the entire bridge, including the steel girder. Figure 3-1 Span Configuration. Figure 3-2 Superstructure Cross Section.
HYPOFLUORESCENCE Hypofluorescence may be caused by 1) blocked fluorescence, which is synonymous with negative fluorescence or transmission decrease, or 2) a vascular filling defect. Blocked fluorescence corresponds to the size, shape, and location of the blocking material seen ophthalmoscopically.
Common causes of hypoxemia include: 1  A blocked airway. 2  Anemia. 3  ARDS (acute respiratory distress syndrome). 4  Certain medications, such as narcotics and anesthetics, which depress breathing. 5  Congenital heart disease â heart defects that are present at birth. 6  COPD (chronic obstructive pulmonary disease). 7  Emphysema. 8  High altitudes.