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.
Fertile chicken eggs can be stored up to 10 days (before incubating) with little loss in hatchability â as long as you keep them out of the refrigerator. The ideal storage conditions are 55 to 60 degrees Fahrenheit and 70 to 75 percent relative humidity.xperts recommend that you set the temperature of your still-air incubator to 101 to 102 degrees to best avoid the formation of cold spots on the inside. Set forced-air incubators at the desired temperature because the moving air creates a more uniform temperature environment.