Wide mediastinum is caused by aortic rupture or mediastinal hematoma, but poor radiographic technique can lead to a mistaken diagnosis. The plain chest film and the aortogram are essential for the proper diagnosis of widened mediastinum in trauma.
1 Temperature: Chicken eggs should be incubated at a temperature between 99 and 102 degrees Fahrenheit (99.5 is often considered to be ideal). 2  Avoid temperatures outside the 97â103 Â°F (36â39 Â°C). 3  range. 4  If the temperature remains beyond either extreme for several days, hatchability may be severely reduced.
    Just to be safe I would have to say leave it in a room temperature area; away from any windows or heaters that can affect the temperature of the egg; for about 6 o â¦ r 7 hours at the least. If you are in a time span then you could probably go with just 2 or 3 hours instead.